SINUMERIK 840D sl. Service - Functions. Manual (2018-2020)

Description of functions

8.4 Tool change box-type, chain, circular magazines

Select/deselect tool offset for Reset

The following machine data can be used to control the behavior for RESET:

• MD20310 TOOL_MANAGEMENT_MASK bit 14

• MD20122 TOOL_RESET_NAME

• MD20110 RESET_MODE_MASK

• MD20130 CUTTING_EDGE_RESET_VALUE

• MD20132 SUMCORR_RESET_VALUE

You can determine whether to:

• deselect the active tool

• keep the active tool selected or

• set a particular tool (according to MD20122 $MC_TOOL_RESET_NAME).

If, in terms of its data, a new tool is selected that is not yet on the master spindle or the master

tool holder (or main spindle, main tool holder), then a tool change is executed for a RESET or the

end of the program. With this type of tool change (in a similar manner to block searches), the PLC

is not capable of influencing the selection of the tool.

Select a tool at start of program

The machine data

• MD20310: TOOL_MANAGEMENT_MASK bit 14

• MD20122: TOOL_RESET_NAME

• MD20112: START_MODE_MASK

• MD20130: CUTTING_EDGE_RESET_VALUE

can be set to define whether:

• the tool on the main spindle or the main tool holder is selected again or remains selected.

• or a particular tool is selected (according to MD20122 $MC_TOOL_RESET_NAME).

If a new tool is selected which in the data is not yet specified as being on the spindle, a tool

change is performed when the program is started. For this type of tool change the PLC cannot

influence the selection of the tool, just as for block search.

Tool rejection by the PLC

With a block search, selection on reset or program start as well as the setting "Select tool in the

interpreter" ($MC_TOOL_Management_Mask bit 23=1), the tool is already selected during

preprocessing and the PLC can no longer reject the tool.

Note

If bit 4 of the machine data MD20310 $MC_TOOL_MANAGEMENT_MASK is set, then the PLC

usually has the possibility to again request preparation for a tool change, yet this time with

different parameters, i.e. to reject the tool.

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Description of functions

8.4 Tool change box-type, chain, circular magazines

Communication between PLC and tool management

The communication between PLC and NC during a tool change is via the VDI interface. Tool

change is triggered by the tool management in the NC. The tool management outputs

commands to the PLC which acknowledges them either positively or negatively depending on

the situation. The PLC also has the capability of independently (asynchronously) transferring

commands to the NC, e.g. communicating the magazine position, transport of a tool, etc.

8.4.8

Predecoding (preprocessing) and block execution (main run)

Sequence

The cutting edge geometry cannot be calculated until the tool management knows the tool that

is actually to be used. Only the identifier is stated in the part program for tool change. Generally,

the tool with the status "active" is then used. But if this is disabled, then one of the other sister

tools, i.e. the replacement tool, is used instead. The precoding delays selection of the new

offsets until it is clear which tool is to be used. Only then can precalculation of the blocks be

restarted.

Tool change must have been completed before the path can be traversed with the tool offset of

the new tool.

The block is split if the preprocessing run detects that a cutting edge of a new tool has been

selected for the first time and tool preparation has been initiated, but not yet completed.

The following synchronization points exist between predecoding and block execution:

Example:

Programmed NC block:

N1 D1 M06 Txx X100 Y100

Sequential blocks:

N1 Txx M06 end of block

N2 D1 X100 Y100

Interpreter detects an offset selection (D number)

It determines that a tool change was previously programmed which has not yet resulted in selection

of a tool.

Interpreter carries out "block splitting".

Output of block N1:

Block 1 receives a request from the execution blocks to output their collective blocks, and also if

programmed, M06, T numbers, ...

Output of block N2:

Block 2 receives the rest, in particular all travel information and any D numbers if programmed.

Tool management stops execution of the block during preprocessing until it is clear which tool is to

be used.

After receiving the tool preparation acknowledgement, execution of block 2 is continued, or first

the new T number is entered in the block and is used to calculate the contour again.

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Description of functions

8.4 Tool change box-type, chain, circular magazines

Tool change at the main spindle or master tool holder

The main run waits in synchronism with tool change block for transport acknowledgement.

1. Main run waits in synchronism with tool change block for end of acknowledgement (if bit 5

or bit 6 of MD20310 $TC_TOOL_MANAGEMENT_MASK is set), or

2. After a tool change in the main run, the NC automatically synchronizes with the end of the

tool change in the block in which a cutting edge of the new tool was selected for the first time.

Note

The transport acknowledgement is an internal acknowledgement of an NC command. It

indicates to the NC that the output command was accepted. When a new command is output

to the PLC, the NC waits for the acknowledgement of the previous command.

Tool already in spindle

If the programmed tool is already in the spindle, by default no task is sent to the PLC. (The

response can be defined by the MD setting.)

Tool change at the secondary spindle or secondary tool holder

1. Main run does not wait. There is no synchronization.

2. Main run waits in synchronism with tool change block for transport acknowledgement.

3. Main run waits in synchronism with tool change block for end of acknowledgement.

Tool change preparation in a main spindle

1. In the main run, the tool management decides which tool is to be used. Until then, the

preprocessor waits at the point in the program at which the offset values of the new tool are

to be considered for the first time.

2. The PLC can also decide which tool is to be used. In this case, the PLC can reject the

recommended tool with a negative acknowledgement. If rejected by the PLC, the NC selects

a new, different tool (only if MD20300 $MC_TOOL_MANAGEMENT_MASK, bit 4 = 1, see also

FC8/FC6-description).

3. Even if the function "GETSELT(...,x)" is programmed, the preprocessor again has to wait until

a decision has been made as to which tool is to be used.

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Description of functions

8.4 Tool change box-type, chain, circular magazines

Prepare to change tool in a secondary spindle

1. The main run does not wait. There is no synchronization

Note

During a synchronization operation where the new offset is used or allowed for by the

preprocessor, "block splitting" must be performed. This ensures that a preprogrammed tool

change T or M06 is actually performed and not collected in run blocks.

Unlike the STOPRE command, the preprocessor does not necessarily wait until all blocks have

been processed, but only waits if tool selection has not taken place by the appropriate time.

The appropriate time is when programming new offsets after tool change or when

programming GETSELT.

8.4.9

Traverse axes while tool is being changed

After the tool change command M06 the axes can continue travel without having to wait for the

tool change acknowledgement and, e.g., execute traversing blocks without tool offset. Travel

only stops in a block with an offset selected (D No.) until the PLC signals that a tool change has

been completed.

Precondition: MD20270 $MC_CUTTING_EDGE_DEFAULT= 0 or = -2

Example: Traversing blocks between tool change and cutting edge selection

N10 T="Drill18"

;Tool change preparation

N15 D0

;Offset deselection

N20 M06

;Tool change

N25 G00 X100 Z200

;Traverse machine axes

N30 Y150 M79

;Traverse machine axes

N35 G01 D1 X10

;Activate the tool offset.

;Check whether the tool has been changed. Preprocessing

stop until tool change preparations have been completed.

;Main run waits until tool change has been acknowledged

from PLC.

The preprocessing stop is maintained until the tool change preparations have been completed.

The main run waits at N35 (D1) until the tool change has been executed and acknowledged.

8.4.10

Special cases "T0", empty spindle, multiple T selection

T0: Empty spindle

DB72.DBX(n+0).3 indicates that T0 has been programmed. If the spindle is to be emptied using

T0, this can be identified by the fact that in DB72, DBW (n+20), DBW(n+22) data for new tool

have the value "0".

Then, values NewToolMag and NewToolLoc of FC8/FC6 must be set to "0".

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Description of functions

8.4 Tool change box-type, chain, circular magazines

This applies to the preparation and to the change procedure.

Spindle is empty

A tool is to be loaded. This status is indicated by the fact that parameters OldToolMag and

OldToolLoc have the value "0".

In this case, FC8/FC6 parameters OldToolMag and NewToolLoc must be set to "0" for tool

preparation and change.

Multiple T selection

It can happen with multiple T selection that the program cannot be aborted by a RESET.

The abort response can be enhanced as follows:

• Cancel the read-in enable to prevent following blocks from being accepted in the main run.

• Then acknowledge with status 3 via FC8/FC6 (the tool command is rejected by the PLC).

8.4.11

Number of replacement tools

Machine data MD17500 MN_MAXNUM_REPLACEMENT_TOOLS can be set to select the

maximum number of replacement tools.

Once the set threshold for the number of replacement tools has been reached it is no longer

possible to:

• Create a new tool with this ID (alarm)

• Assign a tool by renaming an already fully assigned group (alarm).

Alarms

For operation via the HMI, alarm 17192 is output as an indication as soon as the defined limit is

violated.

If programming via a part program an additional interpreter alarm is triggered (e.g. 14020) if

NEWT fails.

For the setting $MN_MAXNUM_REPLACEMENT_TOOLS = 0, the data is not evaluated. This is the

factory setting.

Note

Machine data MD17500 MAXNUM_REPLACEMENT_TOOLS has a maximum input value of "32",

i.e. a tool group then contains a maximum of 32 tools.

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Description of functions

8.4 Tool change box-type, chain, circular magazines

8.4.12

Tool changing errors

If an error is detected by the NC in the programmed tool preparation (e.g. no tool available, no

free position in magazine) program processing is terminated with an alarm.

The operator can assess and rectify various problems without terminating the program.

The following problems can be solved:

• The tool data record is not or not entirely in the NC.

• The part program contains a programming error.

• No more replacement tools of the tool group in question are present or available (only applies

when tool management is active).

• Alarm 22067 or 22069 is output. The tool data record has been loaded into the NC but is not

assigned to a magazine location or the magazine of the tool is not accessible to the tool

search (only applies when tool management is active). The tool must be reloaded "manually"

(e.g. directly onto the spindle).

Note

The case of illegal "D number" can occur either if there is an error in the part program or the

data record for the D number is not in the NC.

Programming example

N10 ...

N100 T="Drill"

;NC detects an error

N110 ...

N200 M06

;to the extent that the tool change is explicitly program-

med in the same program for tool preparation

N210 ...

Note

As a rule M06 is not programmed at the program level of tool preparation but rather in a

subprogram, cycle or macro.

Bit 0 of MD22562 $MC_TOOL_CHANGE_ERROR_MODE is used to set at which block a stop is to

be made.

TOOL_CHANGE_ERROR_MODE, bit 0 = 0:

N10 ...

N100 T="Drill"

;NC detects an error, program stops at this block

N110 ...

N200 M06

N210 ...

TOOL_CHANGE_ERROR_MODE, bit 0 = 1:

N10 ...

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Description of functions

8.4 Tool change box-type, chain, circular magazines

N100 T="Drill"

;NC detects an error

N110 ...

N200 M06

;Program stops at this block

N210 ...

The error is detected during tool preparation, but is delayed by the NC. The program continues

and stops at M06. Tool preparation has been completed at this point in time for a regular

program run. In the event of an error, tool preparation with the correct data can be subsequently

repeated. In this situation, the language command GETSELT would supply the value "-1". With

this information, e.g. in a change cycle, a branch can be made to fault handling.

The programming error (in block 100 in this example) is corrected by adding the offset to the tool

change block:

N200 "T=Drill_1" M06

If a tool change (with M06 programming) is realized by means of a subprogram or cycle

program, then the error can be rectified by inserting an overstore block (in the example).

8.4.13

Monitoring the maximum speed of a tool

If the maximum permissible speed for a tool is exceeded, or the rotary acceleration, e.g. of large

tools, then this represents a danger for man and machine.

The appropriate limit values can be set for each tool via the following system variables:

• Speed limit value: $TC_TP_MAX_VELO[<internal T number>]

• Rotary acceleration limit value: $TC_TP_MAX_ACC[<internal T number>]

This limits the speed and/or the rotary acceleration of the spindle into which the tool is loaded.

The dynamic response limitation is active for the following spindle functions:

• Spindle control mode

• Tapping with G331/G332

• Synchronous following spindle

• Spindle positioning mode

• constant cutting rate (G96, G961, G962)

• constant peripheral grinding speed

• Manual traversing of the spindle in JOG mode

Note

The function is only available when magazine management is active.

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Description of functions

8.4 Tool change box-type, chain, circular magazines

Displaying tool parameters on the user interface

In order that the tool parameters $TC_TP_MAX_VELO (speed limit value) and $TC_TP_MAX_ACC

(rotary acceleration limit value) are displayed on the user interface (read/write), they must be

configured accordingly. A detailed description can be found in:

Further information

• Configuring tool lists (Page 555)

The spindle is the tool holder

If the spindle number is also the number of the tool holder

($MC_TOOL_MANAGEMENT_TOOLHOLDER = 0) (this is typical for milling machines), then the

following applies:

The extension when programming the tool change also refers to the spindle whose dynamics

should be limited.

Example: Extension = 3

T3="Miller_10" M3=6 S3=4000

A tool with the identifier "Miller_10" is loaded onto spindle S3. The speed of spindle S3 is limited

by the tool that is located on it.

Note

If an extension has not been programmed, then the tool change - as well as the programmed

speed - refers to the actual master spindle.

The tool holder is not a spindle

If the tool holder is rigid and the tool holder number is not a spindle

($MC_TOOL_MANAGEMENT_TOOLHOLDER > 0) (this is typical for lathes), then there is no

assignment to a spindle.

However, for driven tools, it is necessary to assign the tool holder to a spindle. This is realized

using the magazine location parameter $TC_MPP_SP[buffermagazine No., location No.]. It is

only possible to change this parameter if there is no tool at this buffer magazine location.

If this assignment is not made, then the dynamics are not monitored and are not limited. As a

consequence, for example, it is not possible to limit the dynamics of the spindle of a lathe with

the fixed turning tool.

Example

Tools on tool holder 2 are driven by spindle 5:

(Buffer magazine no. = 9998, arbitrary location no. therein)

$TC_MPP5[9998,location no.]=2

$TC_MPP_SP[9998,location no.]=5

Programming:

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Description of functions

8.4 Tool change box-type, chain, circular magazines

"T2="Drill_8" M2=6 S5=4000.

A tool with the identifier "Drill_8" is changed to tool holder 2. The speed of spindle S5 is now

limited by the tool in tool holder 2.

Note

If an extension has not been programmed (e.g. T="Drill" S=4000), then the tool change refers to

the actual master tool holder and the programmed speed on the actual master spindle.

Limitation becomes effective on tool change

The dynamic response limitation by the tool on the spindle is only active if the tool is on the

spindle as far as the NC data is concerned. To do this, the PLC acknowledgements are evaluated.

When the tool has been changed on the spindle or the tool holder, the NC/PLC interface signal

"Tool with dynamic response limit active" (DB31, ...DBX85.0) is set.

Note

The NC/PLC interface signal "Tool with dynamic response limit active" (DB31, ...DBX85.0)

indicates that a tool with dynamic response limitation is in the spindle. The assignment state of

the spindles can be checked, especially if all tools have a maximum tool speed, which under

certain circumstances is very high so that there is no effective limiting.

Example: Tool change:

Assumptions:

• The tool with the internal T number = 6 with parameterized dynamic response limitation is

in the spindle (old tool, AWZ).

• The tool with the internal T number = 8 with parameterized dynamic response limitation,

"Miller" tool group is loaded into the spindle (new tool, NWZ).

Step No.

NC program

NC → PLC

PLC → NC

N100 T1="Mill"

---

CMD=2 (tool preparation)

---

NWZ T-No=8: Mag./

mag.loc.1→ Sp1

AWZ T-No=6: Sp1 → Mag./

mag.loc.2

---

CMD=2, status=1

NWZ T-No=8: Mag./mag.loc.1→ Mag./

mag.loc.1

AWZ T-No=6: Sp1 → Sp1

N101 M1=6

---

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8.4 Tool change box-type, chain, circular magazines

Step No.

NC program

NC → PLC

PLC → NC

---

CMD=3 (tool change)

---

NWZ T-No=8: Mag./

mag.loc.1→ Sp1

AWZ T-No=6: Sp1 → Mag./

mag.loc.2

---

CMD=3, status=105

NWZ T-No=8: Mag./mag.loc.1→ Mag./

mag.loc.1

AWZ T-No=6: Sp1 → Mag./mag.loc.2

---

CMD=3, status=105

NWZ T-No=8: Mag./mag.loc.1→ Sp1

AWZ T-No=6: Mag./mag.loc.2 → Mag./

mag.loc.2

---

CMD=3, status=1

NWZ T-No=8: Sp1→ Sp1

AWZ T-No=6: Mag./mag.loc.2 → Mag./

mag.loc.2

CMD: PLC command

NWZ: New tool

AWZ: Old tool

Mag.: Magazine

Loc.: Location

Sp: Spindle

Up to step 6, the limits of the old tool are active.

In step 6, the PLC acknowledges the NC that the old tool was taken from spindle 1; this means

that there are no limits imposed by the tool.

In step 7, the PLC acknowledges the NC that the new tool has been loaded to spindle 1, i.e. the

limits of the new tool are active.

In step 8, the tool change is formally completed; no tool is moved.

Behavior when special events occur

Warm restart or abort of tool movements

The dynamic response limitation of a spindle by a tool depends on the tool, which, from the

perspective of the NC machine data, is in the particular spindle. If required, the data in the NC

should be aligned with the actual assignment of the spindles. This should be observed for a

warm restart or if tool movements are aborted.

Channel interchange

When the channel is interchanged, the spindle keeps the dynamic limits.

Note

The channel into which the spindle is changed, must work with the same TO unit.

Tool management

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8.4 Tool change box-type, chain, circular magazines

Diagnostics

Determining the cause of the limitation

The cause of a limitation can be determined using the following system variables:

• Limitation of the spindle speed by the current tool in the spindle:

$AC_SMAXVELO_INFO[<n>] == 17, where n = spindle number

• Limitation of the spindle rotary acceleration by the current tool in the spindle:

$AC_SMAXVELO_INFO[<n>] == 12, where n = spindle number

Maximum values

The maximum values can be read via the following system variables:

• Speed: $AC_SMAXVELO[<n>]

• Rotary acceleration: $AC_SMAXACCEL_IDX[<n>]

n = spindle number

NC/PLC interface signals

The signal is set irrespective of whether the speed or the acceleration of the spindle is limited by

the current tool:

DB31, ... DBX85.0 == 1 (tool with dynamic response limitation)

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8.4 Tool change box-type, chain, circular magazines

Commissioning

Preconditions

• The "Tool monitoring for maximum speed/acceleration" option must be set.

• The tool is loaded into the spindle after setting the speed/acceleration limitation.

Note

A change of the speed limitation in TC_TP_MAX_VELO[<T number>] is not effective if the tool

is already in the spindle / tool holder.

• One TO unit can be assigned to several channels (MD $MC_TOA_UNIT). The spindle number

must also be unique across these channels and not only in the channels in which it is

configured for axis interchange. This is realized using the magazine location data

- $TC_MPP5[<buffer magazine no>., <location no.>] if the MD

$MC_TOOL_MANAGEMENT_TOOLHOLDER = 0.

- $TC_MPP_SP[<buffer magazine no>., <location no.>] if the MD

$MC_TOOL_MANAGEMENT_TOOLHOLDER > 0.

Note

The application itself must ensure that a spindle interchange in another channel is also

correspondingly taken into account for a tool change.

The PLC can check the synchronization of the tool assignment of the spindles with the data

management of the NC. Tools with a maximum tool speed set the PLC user interface signal

"Tool with dynamic limiting active". This signal can be compared with the assignment sensors

of the spindle.

Parameterization

• Speed limit value: $TC_TP_MAX_VELO[<internal T number>] = <value>, with <value> > 0

• Rotary acceleration limit value: $TC_TP_MAX_ACC[<internal T number>] = <value>, with

<value> > 0

Note

The set values of $TC_TP_MAX_VELO and $TC_TP_MAX_ACC only take effect at the next loading

of the tool into the spindle / tool holder.

Data backup

After importing a data backup with tool data, from the data perspective, tools can be on spindles

or tool holders. The dynamic limit is correspondingly active. It is the task of the PLC user program

to adapt the actual assignment of the spindles to the NC data

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8.4 Tool change box-type, chain, circular magazines

Interface assignment

Signals from the axis/spindle (NC-> PLC):

Syntax

Description

DB31 - DB61.DBX85.0

"Tool with dynamic response limitation active"

=1; when option "Tool monitoring for maximum speed", tool data "TC_TP_MAX_VELO" >0 or

"TC_TP_MAX_ACC">0 are set, and the affected spindle is not in axis mode.

DB31 - DB61.DBX85.1

Reserved for "Tool carrier with dynamic response limitation active"

Program example

Program code

Comment

N10 $TC_TP[10]="Miller"

;T10 = "Miller"

N20 $TC_TP_MAX_VELO[10]=3500

;Speed limitation from T10: 3500 rpm

N100 SETMS(1)

;Spindle 1 = master spindle

N110 M5

;Spindle stop

N120 T="Miller" M6

;Tool with T10 is loaded into spindle 1 ⇒

;DB31,

DBX85.0 = 1

N125 $AC_SMAXVELO[1]=3000

;Spindle speed limitation: 3000 rpm

N130 S5000 M3

;M3: 5000 rpm but limited to 3000 rpm

8.4.14

Tool changes in the NC using synchronized actions

Overview

At tool change and at loading/unloading it is often necessary to supply the NC cycles with the

data for the participating tools.

Usually this is done via the "fast data channel" (dual port RAM) using FC21.

The PLC user program checks the interface in DB71/72/73.

If a new command is pending, the data (new location, old location, T_number,...) are read, pre-

processed and supplied to the cycles via FC21. There they are (usually in synchronized actions)

read as variable $A_DBB[...] and, for example, magazine movements are derived from them.

To reduce the overhead involved and create simpler mechanisms, most of the data of the tool

management interface was mapped onto the NC variables for read access.

This means that all information about the old tool and the new tool can be read directly in the

part program or in synchronized actions; the "detour" via the PLC is no longer needed.

The following variables are used for the mapping process:

$AC_TC_FCT

Function no. (command no. of the NC)

$AC_TC_STATUS

Acknowledgement status from the PLC

$AC_TC_THNO

Tool holder or spindle no. on which the change was executed

$AC_TC_TNO

Internal T no. of the tool to be changed or prepared

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8.4 Tool change box-type, chain, circular magazines

$AC_TC_MFN

Source new tool: Magazine number

$AC_TC_LFN

Source new tool: Location number

$AC_TC_MTN

Target new tool: Magazine number

$AC_TC_LTN

Target new tool: Location number

$AC_TC_MFO

Source old tool: Magazine number

$AC_TC_LFO

Source old tool: Location number

$AC_TC_MTO

Target old tool: Magazine number

$A_TC_LTO

Target old tool: Location number

$AC_TC_CMDT

Trigger variable to output command of the NC (is set for one IPO)

$AC_TC_ACKT

Trigger variable for acknowledgement of the PLC (is set for one IPO)

$AC_TC_CMDC

Counter for the command output

$AC_TC_ACKC

Counter for the acknowledgements

$AC_TC_MMYN

Owner magazine of the new tool

$AC_TC_LMYN

Owner location of the new tool

Supplementary variables for multitool

$AC_TC_TOOLIS

Transported tool of the type:

0 = Single tool

1 = Multitool with distance coding "location"

2 = Multitool with distance coding "distance"

3 = Multitool with distance coding "angle"

$AC_TC_MTDIST

Distance of the MT location with the new tool from the reference point. If the

multitool has "length" as distance coding, the parameter contains the length in

the unit mm or inch as specified by the set dimension system.

$AC_TC_MTNLOC

Number of locations in the MT of the new tool

$AC_TC_MTTN

MT number of the MT location with the new tool

$AC_TC_MTLTN

MT location number with the new tool

Note

The variables are read-only (exception $AC_TC_CMDC and $AC_TC_ACKC). The

acknowledgement mechanism remains unaffected (the PLC still continues to acknowledge all

commands from the NC via FC8/FC6 or FC7).

Method of operation

The variables are written:

1. With each command from the NC (CMD)

2. With each acknowledgement from the PLC (ACK)

3. With Power On all are set to value "-1"

The data is retained until it is overwritten by a new command. This means that with commands

of the same type, it is not possible to tell from the function number ($AC_TC_FCT) whether a new

task is present.

The exceptions are:

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$AC_TC_TNO and $AC_TC_THNO

If, for example, the NC outputs a T preparation, both of these variables are set to "-1" with the

first PLC acknowledgement via FC8/FC6 (e.g. status 105).

Note

Scanning should only take place in synchronized actions. Depending on the application, this can

then trigger the variables $AC_TC_CMDT and/or $AC_TC_ACKT.

Example 1

Positioning a tool chain onto the old location

Assumption:

The tool chain has 36 locations, is defined as rotary and indexing axis, increments are 10 degrees

therefore each graduation corresponds to one magazine location.

Tool_Change_Mode=1, Tool_Change_M-Mode=6

Ids=1 every(($AC_TC_CMDT==1)and(($AC_TC_FCT==2)or($AC_TC_FCT==5))) do

$R10=itor($AC_TC_LTO)

if ((R10>0)and($A_DBB[x]==5)) pos[U1]=cdc(R10)

endif

The trigger is sent to the command output of the NC and with command "2" (T preparation) or

command "5" (T/M06 in one block) the old location is read out and stored in R10

(itor=IntegerToReal - format conversion if the variable is stored in the R-variable in synchronized

actions).

Later in the program, when the enables from the PLC are present (for example as

$A_DBB[x]==5), the magazine axis is traversed to the saved position (old location=$AC_TC_LTO).

A magazine movement could also be started as follows (shown here in simplified form):

Ids=1 every(((($AC_TC_FCT==2)or(AC_TC_FCT==5))and

($AC_TC_STATUS==105))and(($AC_TC_LTO>0))) do pos[U1]=cdc($AC_TC_LTO)

With commands "2" and "5" (T preparation or T/M06), with old location>0 and PLC

acknowledgement status "105" (serves as enable), the magazine axis is traversed.

Old location>0: If the spindle was empty, there is no old tool and the old location is 0. Therefore,

the magazine axis does not need to move.

Example 2

Swiveling a turret

Assumption:

Turret, 6 locations, the turret is defined as an indexing axis, 60 degree increment, corresponds

to one tool location, 1xSpindle, Tool_Change_Mode=0

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Ids=1 every($AC_TC_CMDT==1)and($AC_TC_FCT==4)and($AC_TC_LFN>0) do

$R10=itor($AC_TC_LFN)

if ((R10>0)and($A_DBB[x]==5)) pos[B]=cac(R10)

endif

The NC is triggered with the command output and with command "4" (change with T command)

the new location is read out and saved in R10

(itor= IntegerToReal - format conversion if the variable is stored in the R-variable in synchronized

actions).

Later in the program, when the enables from the PLC are present (for example as

$A_DBB[x]==5), the turret is traversed to the saved position (new location=$AC_TC_LFN).

The logic operation $AC_TC_LFN>0 prevents a movement from taking place if, for example, T0

was programmed.

8.4.15

Replacing functions with subprograms

8.4.15.1

Function replacement

Overview

TCA, T, M, or D functions can be replaced with subprograms.

The function is available irrespective of tool management and is described in full in the "Basic

Functions" Function Manual.

The function is set using the following machine data:

$MN_M_NO_FCT_CYCLE

Enter the M function that is to be replaced, e.g. "6"

$MN_M_NO_FCT_CYCLE_NAME

Name of the cycle that should be executed instead

of the M function, e.g. "L6"

$MN_T_NO_FCT_CYCLE_NAME

Name of the cycle that should be executed instead

of the T function, e.g. "T_Cycle"

$MN_D_NO_FCT_CYCLE_NAME

Name of the cycle that should be executed instead

of the D function, e.g. "Offset"

$MN_TCA_CYCLE_NAME

Name of the cycle that should be executed instead

of the TCA command, e.g. also "T_Cycle"

The mode of operation will now be explained using a T function replacement as an example.

Example

If one of the auxiliary functions to be replaced has been programmed, e.g.

N10 G90 G00 Z-100 S3000 T="Mill_20mm" M65

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then the NC executes a so-called block splitting and "splits" this NC block into 2 blocks

a) G90 G00 Z-100 S3000 M65

b) T="Mill_20mm"

The information "Mill_20mm" is transferred as parameter to the cycle.

If the T call is now again programmed in the replacement cycle, then no additional replacement

is made.

Machine data $MN_T_NO_FCT_CYCLE_MODE is used to set whether the cycle is executed at the

block start or at the block end (or also at the start and end).

The offset handling type is also set: If an offset is programmed (e.g. D3) in the NC block, which

is to be split, then it can be set as to whether the offset selection is taken into account or is

transferred as parameter to the replacement cycle.

Transfer variables of the T replacement cycle

$C_T

T number of the tool (numerical)

$C_T_Prog

Bool variable that shows whether a T word is available in $C_T

$C_TS

Tool identifier (string)

$C_TS_Prog

Bool variable that shows whether an identifier is available in $C_TS

$C_TE

Address extension of the T word

$C_TCA

Bool variable that indicates whether the TCA replacement is active

$C_DUPLO_PROG

Bool variable that indicates if the Duplo number for the TCA replace-

ment has been programmed

$C_DUPLO

For $C_DUPLO_PROG == TRUE, contains the value of the programmed

duplo number

$C_THNO_PROG

Bool variable that indicates if the tool holder / spindle number for the

TCA replacement has been programmed

$C_THNO

For $C_THNO_PROG == TRUE, contains the value of the programmed

tool holder / spindle number

$C_D

Programmed D no.

$C_D_Prog

Bool variable that shows whether an offset number is available in $C_D

$C_DL

Programmed additive/setup offset

$C_DL_Prog

Bool variable that shows whether an offset number is available in $C_DL

$C_MTL_PROG

Bool variable that shows whether a multitool location is available in

$C_MTL (multitool * T=location)

$C_MTL

Programmed multitool position (for T=location)

Example of a T replacement cycle

;T replacement cycle

;

;Machine data to be set

;$MN_T_NO_FCT_CYCLE_NAME="T_cycle"

;$MN_TCA_CYCLE_NAME="T_cycle"

;

PROC T_SUB_PROG DISPLOF SBLOF

;

def string[32] Ident

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def int T_No,Spi_No,T_prep,T_Spi,TH_No

;

;---------------------------------------------------

;--- T command output ---

;---------------------------------------------------

if(($C_T_PROG==1)or($C_TS_PROG==1)or($C_TCA==1))

if $C_T_PROG==1

;T=numeric

if $C_T==0

if $C_T>=1

T[$C_TE]=0

else

endif

else

if $C_TE>=1

if $C_MTL_Prog==true

;multitool T=location

MTL=$C_MTL T[$C_TE]=$C_T

else

T[$C_TE]=$C_T

endif

else

if $C_MTL_Prog==true

MTL=$C_MTL T=$C_T

else

T=$C_T

endif

;

if $C_TS_PROG==1

;T=string

if $C_TCA==1

if $C_DUPLO_PROG==1

if $C_THNO_PROG>=1

TCA($C_TS, $C_DUPLO, $C_THNO)

else

TCA($C_TS, $C_DUPLO)

endif

else

if $C_THNO_PROG>=1

TCA($C_TS, $C_THNO)

else

TCA($C_TS)

endif

else

if $C_TE>=1

T[$C_TE]=$C_TS

else

T=$C_TS

endif

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endif

;

;----------------------------------------------------

;Continuation of the T preparation (machine functions)

;----------------------------------------------------

;

;----------------------------------------------------

;----Tool offset----

;----------------------------------------------------

if (($MN_T_NO_FCT_CYCLE_MODE B_and 'B0')=='B0')

if $C_D_Prog==true

D=$C_D

endif

if $C_DL_Prog==true

DL=$C_DL

endif

;

msg("")

M17

In the cycle, actions can now be easily executed to prepare the tool, scan the gripper, position

the magazine data transfer to the PLC, start auxiliary channels, etc.

Note

The TCI NC command cannot be replaced!

Transfer variables of the D replacement cycle

$C_D

Programmed D no.

$C_D_Prog

Bool variable that shows whether an offset number is available in $C_D

$C_DL

Programmed additive/setup offset

$C_DL_Prog

Bool variable that shows whether an offset number is available in $C_DL

Transfer variables of the M replacement cycle

$C_T

T number of the tool (numerical)

$C_T_Prog

Bool variable that shows whether a T word is available in $C_T

$C_TS

Tool identifier (string)

$C_TS_Prog

Bool variable that shows whether an identifier is available in $C_TS

$C_TE

Address extension of the T word

$C_D

Programmed D no.

$C_D_Prog

Bool variable that shows whether an offset number is available in $C_D

$C_DL

Programmed additive/setup offset

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$C_DL_Prog

Bool variable that shows whether an offset number is available in $C_DL

$C_ME

Address extension of the M word

$C_DL_Prog

Bool variable that shows whether an offset number is available in $C_DL

$C_M_PROG

TRUE if M function was programmed for tool change

$C_M

Value of substituted address M (integer)

There are two different cases:

1. The substitution subprogram for the tool change configured with

$MN_M_NO_FCT_CYCLE_PAR was called. $C_M then contains the value

$MN_M_NO_FCT_CYCLE [$MN_M_NO_FCT_CYCLE_PAR].

2. In the case of a tool change with M code, only one substitution subprogram was configured

for the T and/or D/DL addresses. If the M code for the tool change is programmed together

with one of the addresses to be substituted, the value of $MN_TOOL_CHANGE_M_MODE is

transferred to the replacement program in $C_M.

If parameters are to be transferred to the M replacement cycle, then this must be set using

$MN_M_NO_FCT_CYCLE_PAR = 1

The default setting is "0", i.e. no parameters are transferred.

The parameter transfer refers exclusively to values, which are programmed in this NC block, i.e.

in that block where block splitting is performed.

This application is of interest if Tx M06 is always programmed in an NC block. This means that

the T selection, change as well as offset selection and deselection can be included in just one

single cycle.

Note

Only one function replacement is possible for each NC block.

If, for example, ...T="Mill_20mm" and M06 are programmed in the block, and a replacement

cycle applies to both, then this is rejected with an alarm.

Note

Parameters $C_T_PROG, $C_TS_PROG, $C_D_PROG and $C_DL_PROG act as trigger. If these

parameters have the value "TRUE" - but only then - the T no. D no

is valid.

Note

More detailed information on replacing NC language commands can be found in the "Basic

Functions Function Manual".

8.4.15.2

Replacement of the TCA command

With the TCA command, it is possible to select a tool by specifying the duplo number.

Substitution of the command is possible, a description of this can be found in Section "Function

replacement (Page 407)".

Up until then, it is only possible to substitute using the procedures predefined using the general

replacement function MD10712 $MN_NC_USER_CODE_CONF_NAME_TAB.

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In order to use the same replacement subprogram for the TCA and T replacement, the following

replacement is inserted for the TCA command - analogous to the T function:

With MD15710 $MN_TCA_CYCLE_NAME, the replacement of the TCA command can be

activated by specifying a program name. The parameters of the TCA command are transferred

to the replacement subprogram in the following system variables:

$C_TS

Tool identifier (as in the existing T replacement)

$C_DUPLO

Duplo number

$C_THNO

Tool holder / spindle number

In addition, there are system variables, which can be used to query whether the substitution of

the TCA command is active and which parameters have actually been programmed:

$C_TCA

TRUE: Replacement of the TCA command is active

$C_TS_PROG

TRUE: $C_TS contains the programmed tool identifier

$C_DUPLO_PROG

TRUE: $C_DUPLO contains the programmed duplo number

$C_THNO_PROG

TRUE: $C_THNO contains the programmed tool holder / spindle num-

ber

Behavior regarding other replacements:

In the TCA replacement subprogram, tool programming replacement is not carried out. All other

replacements are carried out. Conversely, no TCA replacement is carried out in a replacement

subprogram for tool programming.

If the TCA command is programmed when the tool management or tool monitoring is not active,

then the part program processing is interrupted with Alarm 6431 "Tool management or tool

monitoring not active" (this is the existing behavior). If TCA replacement is configured, then in

this case, part program processing is also aborted with alarm 6431.

Note regarding MD10712 $MN_NC_USER_CODE_CONF_NAME_TAB:

If the TCA command is renamed, e.g. to "_TCA", by appropriately configuring MD10712, then the

TCA replacement is realized with the interpretation of the "_TCA" command.

Example with a common replacement cycle for T and TCA replacement:

Machine data:

$MN_T_NO_FCT_CYCLE_NAME = "T_SUB_PROG"

$MN_TCA_CYCLE_NAME = "T_SUB_PROG"

Replacement subprogram for T and TCA replacement:

N1000 PROC T_SUB_PROG DISPLOF SBLOF

;common part

;different tool selection:

N2000 IF ($C_TCA == 1)

N2010

;TCA replacement active

N2020

IF ($C_DUPLO_PROG == 1) AND ( $C_THNO_PROG == 1)

N2030

TCA( $C_TS, $C_DUPLO, $C_THNO )

N2040

ELSE

N2050

IF ( $C_DUPLO_PROG == 1) AND

( $C_THNO_PROG == 0)

N2060

TCA( $C_TS, $C_DUPLO)

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N2070

ELSE

N2080

IF ( $C_DUPLO_PROG == 0) AND

( $C_THNO_PROG == 1)

N2090

TCA( $C_TS, ,$C_THNO)

N2100

ELSE

N2110

TCA( $C_TS)

N2120

ENDIF

N2130

ENDIF

N2140

ENDIF

N2150 ELSE

N2160

IF ( $C_T_PROG == 1) OR ( $C_TS_PROG == 1)

N2170

;T replacement active

N2180

IF ( $C_T_PROG == 1)

N2190

T[ $C_TE ] = $C_T

N2200

ELSE

N2210

T[ $C_TE ] = $C_TS

N2220

ENDIF

N2230

ENDIF

N2240 ENDIF

M17

See also

TCA - tool selection/tool change irrespective of tool status (Page 270)

8.4.16

Block search

Block search with calculation

On a block search, selection on reset or start, the tool is selected during preprocessing. In this

case the PLC is not allowed to reject the tool (see bit 4 in MD20310). Otherwise, an alarm is

output. The block search must then be repeated. Use of the active tool can only be prevented

from an external source (HMI, PLC).

In block search with calculation the program is generally put into a state where the selected

block can be executed. With respect to the tool management function, this means that the tool

that should be located in the spindle when the machining block is reached must now be loaded

to it.

If another tool is located in the spindle a "replace" command is initiated. In such a case, the

signals "Prepare change" (DB72.DBX(n+0).2 and "Execute change" (DB72.DBX(n+0).1 are

present at the same time since the auxiliary functions are output together.

Example: $MC_TOOL_CHANGE_MODE=0

Tool "Drill1" is loaded in the spindle. The new search target has T = "Drilling machine 2" as the

momentary tool programming.

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NC initiates the tool change. PLC must not reject.

Note

Tool rejection by PLC: If bit 4 of MD20310 $MC_TOOL_MANAGEMENT_MASK is set, then the PLC

usually has the possibility to again request preparation for a tool change, yet this time with

different parameters, i.e. to reject the tool. This is not possible during block search. In this case,

the machine data setting is ignored.

Note

Because the tool change is frequently performed using cycles, a "replace command" generated

by the block search must be executed in an asynchronous subprogram (ASUP). Modal and static

motion-synchronization action is retained at the beginning of ASUP and is also effective in the

asynchronous subprogram. If the asynchronous subprogram is not continued with Repos, the

modified modal and static motion-synchronous actions in the main run remain operative.

Alternatively, execution of the NC part program can be stopped by halting feed and read-in, and

a fault message "Wrong tool in spindle after the block search" can be generated.

Tool cannot be used

Alarm 22068 is output if the tool to be loaded at the search target cannot be used (it is not

available, disabled, ...), the program must be canceled using a reset.

In order that the block search is not canceled if the tool involved at the search target is not the

tool to be loaded, then an attempt is made to also permit any tool (and therefore also a disabled

or an unloaded tool) - assuming that it only has the "enabled" state and therefore has a defined

geometry. This is realized before the alarm is generated.

If an additional tool change is programmed, the tool that is underway that cannot be used is not

noticed and does not stop the operation. However, if an attempt is made to precisely load this

disabled/unloaded/.. Tool at the end of the block search after the first START, then this is noticed

in the NC and acknowledged with alarm 22067; this then no longer allows the program to be

continued. The PLC can permit a disabled tool to be selected (i.e. by setting the interface signal

"Tool disabled ineffective" in the channel DB). However, in a specific case, this must be realized

during the block search, i.e. before the NC outputs Alarm 22068 or 22067. If, for a block search,

tool programming is initiated in the NC, and there is neither a tool that can be used, nor a

disabled, unloaded or soon to be unloaded tool, then alarm 22068 is output, which then

terminates the block search.

Example of a block search with block splitting effect

N100 T="Tool1" M06 D1

N110 SETMTH(1)

;Tool holder1 becomes master tool holder

N120 T="ToolZ2" M06 D2

;Target block: is not yet interpreted

N1000 IF($P_PROG_EVENT ==5)

;ASUP is started

N1020 SETMTH(2)

;Tool holder 2 becomes master tool holder

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N1040 ENDIF

N1099 REPOSA

N110 SETMTH(1)

;The interrupted main program is continued/started

after the last executable block before the search

target.

;Tool holder 1 becomes master tool holder again.

8.4.17

Block search (SSL) in conjunction with active tool management

The block search has already been described. Here we shall deal with the specific features in

conjunction with active tool management.

The block search establishes the start position of the target block. Auxiliary functions

programmed in the block search are collected and output in action blocks at the end of the block

search.

For now this also applies to the T command and M06. This depends on the setting in machine

data 20128 $MC_COLLECT_TOOL_CHANGE

0 = Neither T preparation nor M06 are output.

1 = T preparation and M06 are collected and output (and must be acknowledged to end the block

search). Default setting.

The following example shows how to proceed with block search.

Configuration: Milling machine, one spindle

Settings:

$MC_Tool_Change_Mode=1, i.e. change with M06

Block search

Tool change should be subsequently executed:

Situation:

T="Face_80mm" is located in the spindle

Block search to N98 (block search with contour calculation)

Target:

In order to continue in the program:

a. Tool "1537" must be loaded

b. Tool "Drill_6mm" must be prepared

N10 T="1231"

;T no. 1

N20 M06

N30 T="Face_80mm"

;T no. 2

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N70 M06

N80 T="1537"

;T no. 3

N90 M06

N95 T="Drill_6mm"

;T no. 4

N98

Settings:

$MC_Tool_Change_Mode=1

$MC_Collect_Tool_Change=0

$MN_Search_Run_Mode bit 1=1

$MC_Collect_Tool_Change=0 means: No output of T and M06 after block search.

Procedure:

• Negative acknowledgement is not required in the PLC.

• The program "Prog_Event.SPF" is started with the last action block.

The change and preparation must be subsequently carried out.

Note

In order to start the Prog_Event after a block search, settings are required in the machine data.

Prog_Event.SPF

…

def int T_Vor, T_Spi, T_active

…

GETEXET(T_active)

The spindle tool is read from NC view (blocks N80 and N90)

_active=3

GETSELT(T_Vor)

T preparation is read from block N95 T_Vor=4

T_Spi=$TC_MAPP6[9998,1]

The actual spindle tool is read T_Spi=2

…

;Load correct tool

if ((T_Spi< >T_active)and(T_active>0))

T=$TC_TP2[T_active]

Preparation of tool "1537"

L6 ;change cycle

Load tool "1537"

Endif

…

if T_prep< >T_active

if T_prep>0

T=$TC_TP2[T_prep]

Preparation of tool "Drill_6mm" from block N95

Endif

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If t_prep==0

Endif

Note

If a change is output by the action blocks (in example block N80 and N90), it is always a

command "5", i.e. "Prepare change" and "Perform change" are pending in DB72 at the same time.

If the correct tool is already placed in the spindle (i.e. in the block search example at block N70

and $MC_COLLECT_TOOL_CHANGE=1 is set), the T preparation is issued (from block N30). The

setting for bit 12=0/1 in the MD $MC_TOOL_MANAGEMENT_MASK machine data is not

evaluated.

Difference between the commands GETEXET and $P_TOOLNO:

GETEXET

Reads the T no. of the spindle tool from the NC perspective.

Independent of the offset selection.

This has been specifically developed for the block search application.

$P_TOOLNO

Reads the T no. of the active tool.

This does not refer to the "active status" of the tool which is set via the T preparation, instead it

refers to the tool whose offset is being calculated. This view of the tools means that a tool doesn't

become an active tool until the offset is selected - which is what is read with $P_TOOLNO. This

means dependency on MD $MC_CUTTING_EDGE_DEFAULT,

Example:

N100 T="Countersink"

;T No. 5

N110 M06

N108 G90 G00 D1 X...

N200 T="Drill"

;T No. 32

N210 M06

N212 G90 G00 D1 X...

Block search to block N200

1. Setting $MC_Cutting_Edge_Default=-2

GETEXET = 5

$P_TOOLNO = 5

2. $MC_Cutting_Edge_Default=1

GETEXET = 5

$P_TOOLNO = 5

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Block search to block N212

1. Setting $MC_Cutting_Edge_Default=-2

GETEXET = 32

$P_TOOLNO = 5

2. $MC_Cutting_Edge_Default=1

GETEXET = 32

$P_TOOLNO = 32

8.4.18

System variables for state before block search

8.4.18.1

Description of the variables

The function is available with TMMO and TMMG.

To round off the "block search" function, the active tool offset must be available in an ASUP before

the block search or test mode when the target block of the block search is reached. In this ASUP,

the OEM can implement the steps necessary to place the tools in the state required in the target

block. The following system variables that describe the state in the reset state before the block

search are available for this functionality:

• $P_MTHNUM_BEFORE_SEARCH

Tool holder to which the offset refers. This is normally

the master tool holder.

• $P_D_BEFORE_SSL

Active offset in the reset state

• $P_DL_BEFORE_SSL

Active total and setup offset in the reset state

These system variables are available in the "without magazine management" and the "with

magazine management" versions.

The selected and loaded tools on the individual tool holders before the block search are available

with the extension of the NC commands GETSELT - Read the selected T number (Page 239) and

GETEXET - Reading of the loaded T number (Page 242).

In the "with magazine management" version, the essential information is already available

through the assignment of the tool holders or spindles in the buffer magazine, because the

magazine location assignment is not changed by the block search. However:

• The master tool holder

• The selected tool offset "D" and

• The selected insert offset "DL"

that were valid before the block search, are not available.

In the "without magazine management" version, there is no information about the state before

the block search. As in this case the NC does not have any data about the location of the tools,

it can only draw conclusions about the tool location from the last instructions before the block

search.

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The state before the block search is the reset state. This means:

• The settings made during the NC reset become the values of the system variables.

• With an NC reset, the master tool holder set during the NC reset determines the active tool

and thus the active offset.

• Therefore the settings from the init block are not included in the system variables at the start

of the block search.

After reaching the block search target, the system variables take on the values of the

corresponding system variables from the NC program, if a new value is set.

Overview of the available system variables for the reconstruction of the selected offset in a

ProgEvent program after a block search:

System variable for the state

before the block search

during and after the block search

Without magazine management

With magazine management

$P_MTHNUM_BEFORE_SEARCH

$P_MTHNUM

GETSELT(tNo,Th,"S")

$P_TOOLP

GETSELT(tNo,Th)

GETEXET(tNo,Th,"S")

$P_TOOLNO

GETEXET(tNo,Th)

$P_D_BEFORE_SEARCH

$P_TOOL

$P_DL_BEFORE_SEARCH

$P_DLNO

tNo: Tool number, Th: Tool holder

8.4.18.2

Example

The following settings are active:

• The tool change is performed with M6.

• Cutting edge default=-2

In the reset state, the following state is reached for the tool offsets:

• Master tool holder = 3

• Active T number on master tool holder = 5

• Active D offset = 2

• Programmed T number on master tool holder from last NC program = 6

This results in:

$P_MTHNUM_BEFORE_SEARCH =3

GETSELT(tNo1, 3) with tNo1=6

GETEXET(tNo2, 3) with tNo2=5

$P_D_BEFORE_SEARCH = 2

$P_DL_BEFORE_SEARCH = 0 (The setup offset is not considered further and behaves in the

same way as the D offset selection.)

Tool management

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Description of functions

8.4 Tool change box-type, chain, circular magazines

Sequence:

• The following NC program is to be processed in the block search up to block N220

• The old D offset is selected again in a ProgEvent ASUP in order to safely remove the tool from

the tool holder taking the old D offset values into account and

• The new tool is activated with the D offset in the target block

No new tool has been loaded on tool holder 3 up to the target block.

N100 SETMTH(2)

N110 T8

N120 M6

N130 D3

N200 T9

N210 SETMTH(1)

N220 X10 G0

The meaning of the abbreviations used in the overview is as follows:

MTh: Value of master tool holder ($P_MTHNUM)

SelT(th): Return value of GETSELT for the tool holder "th"

ExeT(th): Return value of GETEXET for the tool holder "th"

DNo: Value of $P_TOOL

The ending S means the value of the corresponding variable "_BEFORE_SEARCH" or with the

optional third parameter "S".

MTh

MThS

SelT(2)

SelTS(2

ExeT(2)

Ex-

SelT(3)

SelTS(3

ExeT(3)

Ex-

DNo

DNoS

)

eTS(2)

)

eTS(3)

Before N100

After N110 T8

N120 T8

N130 D3

N200 T9

N210 SETMTH

N220 X10 G0

* Means that the value for this example is irrelevant or indeterminate.

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Description of functions

8.4 Tool change box-type, chain, circular magazines

The ProgEvent program has the following rough structure:

N1000 DEF INT TNO1, TNO2

N1010 DEF INT MTH_SAVE, D_NO_SAVE, SELTNO_SAVE, EXETNO_SAVE

N1020 DEF INT SELTNO1_SAVE, EXETNO1_SAVE, TH_OF_D_SAVE

; Save the currently reached state at the end of the block search

N1100 MTH_SAVE = $P_MTHNUM D_NO_SAVE=$P_TOOL TH_OF_D_SAVE =

$P_TH_OF_D

N1110 GETSELT( SELTNO_SAVE, $P_TH_OF_D)

N1120 GETEXET( EXETNO_SAVE, $P_TH_OF_D)

; Collect data on the state before the block search

N1150 GETSELT(TNO1,$P_MTHNUM_BEFORE_SEARCH, "S")

N1160 GETEXET(TNO2,$P_MTHNUM_BEFORE_SEARCH, "S")

N1170 GETSELT(SELTNO1_SAVE,$P_MTHNUM_BEFORE_SEARCH)

N1180 GETEXET(EXETNO1_SAVE,$P_MTHNUM_BEFORE_SEARCH)

; Select old offset again.

N1200 SETMTH($P_MTHNUM_BEFORE_SEARCH)

N1210 T=TNO2

N1220 IF (EXETNO1_SAVE == TNO2)

; Old tool is still on the tool holder

N1230 M6 M=spec; additional information that M6 does not require a

tool change by PLC

N1240 D=$P_D_NO_BEFORE_SEARCH

N1250 X=x_safe Y=y_safe Z=z_safe G0 N1260 ELSE

N1300 ENDIF

; Load desired tool in accordance with target block

N1400 SETMTH(TH_OF_D_SAVE)

N1500 T=EXETNO_SAVE

N1510 M6

N1520 D=D_NO_SAVE

; Restore master tool holder in accordance with target block

N1600 SETMTH(MTH_SAVE)

Tool management

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Description of functions

8.4 Tool change box-type, chain, circular magazines

REPOS

MTh

MThS

SelT(2)

SelTS(2

ExeT(2)

Ex-

SelT(3)

SelTS(3

ExeT(3)

Ex-

DNo

DNoS

)

eTS(2)

)

eTS(3)

Before N1200:

After N1200:

N1210:

N1230:

N1240:

N1400:

N1500:

N1510:

N1520 D=D_NO_SAVE(=3)

N1600 SETMTH(MTH_SAVE)(=1)

* Means that the value for this example is irrelevant or indeterminate.

Note

It is the responsibility of the NC programmer to check whether the specified tool still exists.

8.4.19

Program test

Overview

The "program test" function can be used to traverse a program without axis motion.

All additional data is determined and taken into account. For tool management, this means that

the tools are searched and the appropriate values transferred to the PLC interface when the tool

is called.

The PLC must acknowledge these tasks without moving the magazine or changing a tool. Special

measures are therefore required on the PLC.

The tool management acts in exactly the same way as it would when a program is running. In

the case of tools without fixed location codes and acknowledgement, this can result in the PLC

data indicating different tool locations to the actual mechanical locations in the magazine. This

Tool management

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Description of functions

8.4 Tool change box-type, chain, circular magazines

can be prevented by configuring FC 8 such that a fixed location is simulated for the duration of

the program test rather than the calculated empty location applied as a parameter.

The old location of the tool is stored in the function block which handles program testing and

returned again to this location in the software (data settings). Any existing spindle tool is also

returned to the spindle in the software at the end of the program test or on a reset. This ensures

that the magazine assignments in the software match the mechanical assignments after

program testing.

For testing programs involving manual tools, see Section "Manual tools (adding tools during

machining) (Page 470)".

Example of how to adapt the PLC in test mode

The following program example can be used as a template for adapting the PLC to the program

test mode. Only the first channel and a spindle are supported as tool change locations.

The tool is always changed directly into the spindle. The spindle is used as the change position

(DB72). Access to the NC-PLC interface (DB21, DB72) is symbolic. The standard UDTs (UDT 21,

72) are included for this purpose. These are part of the basic program and must be copied to the

project and subsequently compiled.

The following must be entered in the symbol table:

Symbol

Address

Data type

Comment

Channel 1

DB21

UDT 21

SpChPos

DB72

UDT 72

TC_VAR

DB119

For testing the tool

change

All necessary variables are stored in the instance data block.

If program test mode is deselected, no action occurs. The target positions suggested by tool

management are confirmed by the PLC.

If program test mode is selected, the target positions are defined by the PLC. These correspond

to the source positions of the respective tools. The target position is only confirmed and saved

by tool management on the first tool change. It is thus possible to undo the first tool change after

program test mode is selected.

Two asynchronous transfers are required for this purpose. The first one returns any tool present

in the spindle to the magazine. The second asynchronous transfer is intended to return a tool

which was loaded in the spindle before program test mode back into the spindle.

Program test - extended

A setting can be selected with the machine data $MC_TOOL_MANAGEMENT_MASK, bit 20 such

that the NC cannot issue any tool-changing commands to the PLC in the status "Program test

active". The NC outputs its own acknowledgement so that no further data-related tool motion

exists.

The default setting is that the Tool_change command is not output.

The following applies for the tool used during program test mode:

Tool management

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Description of functions

8.4 Tool change box-type, chain, circular magazines

The tool status "active" can still be set and the tool status "was in use" is set. This does not have

any further detrimental effects since tool monitoring is not normally active in the test mode.

With bit 20, value 1, the generated commands are output to the PLC. Tool / magazine data can

be changed in the NC depending on the type of acknowledgement by the PLC. If the

acknowledgement parameters for the "target magazine" are set to the values of the "source

magazine", then the tool is not moved and the data therefore not altered in the NC.

Exception: The tool status of the tool activated in the test mode can take the status "active".

Note

It may not be derived - to the extent the setting "No tool change commands to PLC" is selected

- that the tool on the spindle or the tool holder during "Program test active" is the active tool.

The block search "SERUPRO" search (cross-channel block search) uses the program test.

8.4.20

Several spindles in one channel or TO unit

When using tool management and more than one spindle please note the following:

2 spindles in one channel

Only one tool offset can be active per channel. Spindle 1 defined as master spindle with

$MC_SPIND_DEF_MASTER_SPIND = 1. Spindle 2 is a secondary spindle.

The master spindle is spindle no. 1 in each case.

2 channels each of which access the same TO memory have been set in the machine data. One

spindle is assigned to each channel. Two spindles are assigned to one magazine in the magazine

configuration.

The master spindle is spindle no. 1 for both channels. To be able to change a tool in spindle No.

2 as well, before the tool change in the 2nd channel, the 2nd spindle must be defined as master

spindle. In the TM system, the spindle number is sent to the PLC. This number is determined from

the extended address of T. If this is not programmed, the NC assigns the master spindle number

of the channel in which the program is running.

Each channel has its own master spindle

2 channels each of which access the same TO memory have been set in the machine data. One

spindle is assigned to each channel.

Two spindles are assigned to one magazine in the magazine configuration.

In each channel the assigned spindle is defined as the master spindle. Tool change is possible

without making any additional definitions in the program.

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Description of functions

8.4 Tool change box-type, chain, circular magazines

8.4.21

Decoupling the tool management from the spindle number

The program must specify the location (spindle number on milling machines) at which the tool

is to be changed before the tool management can insert a tool.

Machine data MD20124 $MC_TOOL_MANAGEMENT_TOOLHOLDER can be set to determine

whether a tool holder number can be assigned to define the location of the tool to be loaded

instead of a spindle number. Thus the appropriate designation (spindle number or tool holder

number) can be used in the event of use.

The following figures show which variable definitions you require for the following variants:

• Working with two spindles in one channel and one TO unit (standard functionality)

• Working with two spindles in one channel (standard functionality)

• Working with two tool holders in two channels (one TO unit)

• Working with two tool holders in one channel

Working with spindle numbers

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Two spindles in two channels and one TO unit

Two channels operating with the data of one TO unit (with one magazine). One spindle is

defined in each channel.

Spindle 1 in channel 1 has been declared the master spindle with MD

SPIND_DEF_MASTER_SPIND=1. Spindle 2 on channel 2 is the master spindle.

Both spindles must be assigned different numbers because the assignment of the spindle to the

second internal magazine (buffer magazine) must be unique.

This assignment is realized by $TC_MPP1 (spindle location) and by $TC_MPP5 (spindle number).

Tool management

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Description of functions

8.4 Tool change box-type, chain, circular magazines

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Figure 8-26

Two spindles in one channel

Two spindles of a single channel are operating with one magazine.

Spindle 1 was defined as master spindle with SPIND_DEF_MASTER_SPIND = 1.

Spindle 2 is not a master spindle (secondary spindle).

Example of a part program (for a channel with two spindles)

(Requirement: CUTTING_EDGE_DEFAULT=1; i.e. D1 is implicitly active with the tool change

M06):

T="Miller" M06

;No address extension programmed -> the master spindle is addressed,

i.e. spindle 1 = value of machine data $MC_SPIND_DEF_MASTER_SPIND.

;The tool change takes place in spindle 1.

;The path is corrected with the offsets of the "Miller" tool.

T2="Drill" M2=6

;Address extension for the secondary spindle has been programmed.

The tool change takes place in the PLC at the tool management interface

for spindle 2.

;The path is still corrected with the offsets of the "Miller" tool

SETMS(2)

;Declares spindle no. 2 as master spindle

T="Miller_2" M06

;No address extension programmed → the master spindle is addressed

(spindle 2).

;The tool change takes place in spindle 2.

;The path is now corrected with the offsets of the "Miller_2" tool

T1="Drill_1" M1=6

;Address extension for the current secondary spindle has been program-

med.

;The tool change takes place in spindle 1.

;The path is still corrected with values from tool T="Miller_2".

Tool management

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Description of functions

8.4 Tool change box-type, chain, circular magazines

SETMS

;Declares the spindle defined by $MC_SPIND_DEF_MASTER_SPIND as

master spindle

T="Miller_3" M06

;No address extension programmed -> the master spindle is addressed

(spindle 1).

;Value of machine data $MC_SPIND_DEF_MASTER_SPIND). Tool change

takes place in spindle 1.

;The path is corrected with the offsets of the "Miller_3" tool.

Further example (starting conditions as above):

N10 SETMS

;Declare spindle no. 1 as master spindle

N20 T2=3

N50 M2=6

;Address extension for the secondary spindle has been programmed. Tool

change takes place on the spindle.

;The path is corrected with the offsets of "Miller_3"

N70 D3

;The path is corrected with the offsets of the active tool (that was activated

before block N10 - here in the example, "Miller_3")

N80 SETMS(2)

;Declare spindle no. 2 as master spindle

M06

N90 D2

;The path is corrected with the offset of tool "T3".

Note

SETMS does not change the active tool. The new master spindle definition cannot be referenced

until the subsequently programmed tool change.

The following applies: Offset selection is active for the last tool loaded onto a master spindle.

Tool management

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Description of functions

8.4 Tool change box-type, chain, circular magazines

Working with tool holder numbers

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Figure 8-27

Two channels each with one tool holder and one TO unit

(The zero position is located at the change position of the tool holder 1).

Two channels operating with the data of one TO unit (with one magazine). Tool change no

longer requires that a spindle number be specified. The address extensions of T and M now refer

to the value of machine data MD20124 $MC_TOOL_MANAGEMENT_TOOLHOLDER.

Instead of "spindle location" the general term "tool holder" (tool machining location) is used

(spindle is standard). If an address extension is not programmed, the address extension is

supplemented by the value of MD20124 TOOL_MANAGEMENT_TOOLHOLDER.

$MC_TOOL_MANAGEMENT_TOOLHOLDER = 0

The previous function remains active (default).

A value greater than zero activates the new function.

$MC_TOOL_MANAGEMENT_TOOLHOLDER > 0

If a tool change is programmed to a buffer location of the type "Tool holder" with $TC_MPP5 =

TOOL_MANAGEMENT_TOOLHOLDER, then the offset data defined for this tool corrects the path.

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Figure 8-28

One channel with two tool holders

Tool management

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Description of functions

8.4 Tool change box-type, chain, circular magazines

(The zero position is located at the change position of the tool holder 1).

Two tool holders in a channel are operating with one magazine. Tool holder 1 has been declared

the master using TOOL_MANAGEMENT_TOOLHOLDER = 1. Tool holder 2 is thus the secondary

tool holder.

Programming example:

The language command SETMTH (tool holder number) is used to declare one or several tool

holders as the master tool holder.

The initial state after power on is defined using machine data

$MC_TOOL_MANAGEMENT_TOOLHOLDER; the behavior at NC start and reset using the

machine data $MC_START_MODE_MASK and $MC_RESET_MODE_MASK.

SETMTH (tool holder number),

T="Miller" M06

;No address extension programmed -> the master tool holder is addressed

(tool holder 1 - value of machine data $MC_TOOL_MANAGEMENT_TOOL-

HOLDER).

;The tool change is performed at buffer location 1.

;The path is corrected with the offsets of the "Miller" tool.

T2="Drill" M2=6

;Address extension for the secondary tool holder has been programmed.

;The tool change is performed at buffer location 2.

;The path is not corrected

SETMTH(2)

;Declares tool holder 2 as the master tool holder

T="Miller_2" M06

;No address extension programmed -> the master tool holder is addressed

(tool holder 2).

;The tool change is performed at buffer location 2.

;The path is corrected with the offsets of the "Miller_3" tool.

T1="Drill_1" M1=6

;Address extension for the secondary tool holder has been programmed.

;The tool change is performed at buffer location 1.

;The path is not corrected!

SETMTH

;Declares the tool holder specified in $MC_TOOL_MANAGEMENT_TOOLHOLD-

ER as the master tool holder

T="Miller_3" M06

;No address extension programmed -> the master tool holder is addressed

(tool holder 1 - value of machine data $MC_TOOL_MANAGEMENT_TOOL-

HOLDER).

;The tool change is performed at buffer location 1.

;The path is corrected with the offsets of the "Miller_3" tool

Tool management

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Description of functions

8.4 Tool change box-type, chain, circular magazines

Note

SETMTH does not change the active tool. The new master tool holder definition cannot be

referenced until the subsequently programmed tool change.

The following applies: Offset selection is active for the last tool changed into the active tool

holder.

8.4.22

Several spindles/toolholders

Overview

Tool management can work in one channel with more than one tool holder. If several channels

of one TO unit are supplied with data, then make sure that the tool holder numbers have

different (= unique) numbers in the magazine configuration ($TC_MPP5 of buffer locations of

the type ($TC_MPP1) "Spindle"). The spindle numbers of the channels must then be unique as

well (if $MC_TOOL_MANAGEMENT_TOOLHOLDER=0).

Example

This example is to show how to differentiate between active tools and programmed tools.

Spindles 1...4 are defined in channel 1; analog to this, spindle locations 1...4 in magazine

configuration 4.

SETMS (2)

T12

;12 is a programmed tool

M06 D3

;12 is an active tool, 3 is an active cutting edge

SETMS (4)

T22

;12 remains an active tool, 22 becomes the programmed tool with

respect to spindle=4

T3=33 M3=6

;T33 is loaded onto the secondary tool holder 3. The tool (T33)

is not active.

SETMS (1)

;Tool holder=1 becomes master spindle, T12 remains active, T22

remains programmed

;D5=active cutting edge; refers to the active tool, i.e. T12

M00

The following situation is given:

Tool holder number

T number

D number

1 master spindle

12 active

5 active

22 programmed

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Description of functions

8.4 Tool change box-type, chain, circular magazines

8.4.23

Several magazines in one channel or one TO unit

Address extension

The NC address T can be programmed with an address extension. The tool management

function interprets the programmed address extension as a spindle number or toolholder

number. The NC address T without programmed address extension then refers to the main

spindle (master spindle).

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Figure 8-29

T="location" and several magazines in the same channel

The diagram shows the procedure for using more than one magazine in a channel (when

programming with T="location" this is usually a turret).

Note

The tool offset is only calculated for the toolholder that is assigned at that point in time to the

master spindle or the master toolholder.

8.4.24

Reset and start mode

Fundamentals

The tool offset selection/deselection can be set in the machine data for program end or reset as

well as for NC Start.

It is also possible to permanently preset the change for a specific tool, e.g. at NC Start.

Tool management

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Description of functions

8.4 Tool change box-type, chain, circular magazines

The settings are made in the following machine data:

• MD20310 $MC_TOOL_MANAGEMENT_MASK

• MD20110 $MC_RESET_MODE_MASK

• MD20112 $MC_START_MODE_MASK

• MD20122 $MC_TOOL_RESET_NAME

• MD20130 $MC_CUTTING_EDGE_RESET_VALUE

The function and interaction of the machine data are displayed in the following diagram.

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Reset and start mode

Tool management

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Description of functions

8.4 Tool change box-type, chain, circular magazines

MD20110 $MC_RESET_MODE_MASK

Bit

Val

Meaning

The offset remains unchanged, i.e. after end of part program and reset, the last programmed

offset remains active (behavior as with bit 0=1 and 6=1).

Reset mode, i.e. evaluation of bits 4 ... 11

Reset behavior (tool offset) with tool management not active. No effect if tool management

active

Reset behavior corresponds to MD $MC_TOOL_RESET_NAME and $MC_CUTTING_EDGE_RE-

SET_VALUE

Current setting for active tool length compensation is retained beyond reset/end of part pro-

gram.

For active tool management, the tool that is located in the master spindle (general: master tool

holder) is selected.

If the tool on the spindle is disabled (but released), this state is ignored, there is no selection

of a sister tool! (Replacement tool with Start_INIT only).

Activation takes place on the master spindle defined in MD $MC_SPIND_DEF_MASTER_SPIND,

or on the master tool holder defined in $TC_TOOL_MANAGEMENT_TOOLHOLDER.

The tool in the last programmed master spindle or master tool holder can also be active. Bit 16

or 17 is used for this purpose.

Reset behavior for spindles

Bit

Val

Meaning

The master spindle is the spindle defined in MD $MC_SPIND_DEF_MASTER_SPIND.

The settings in the machine data below refer to this data:

• $MC_TOOL_MANAGEMENT_MASK

• $MC_RESET_MODE_MASK

• $MC_START_MODE_MASK

• $MC_TOOL_RESET_NAME

• $MC_CUTTING_EDGE_RESET_VALUE

The spindle last programmed with SETMS(x) remains the master spindle after end of program

and reset, regardless of the machine data setting.

This means that if bits 0/6=1, the offset remains active for the tool which is placed in the

spindle.

Power on behavior

The machine data setting is active after power on.

This means the offset for the tool which is placed in the spindles specified in MD

$TC_SPIND_DEF_MASTER_SPIND becomes active; the offset value is that of the smallest avail-

able D no. for this tool.

Tool management

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Description of functions

8.4 Tool change box-type, chain, circular magazines

Reset behavior for tool holder

Bit

Val

Meaning

The master tool holder is the tool holder specified in MD $TC_TOOL_MANAGEMENT_TOOL-

HOLDER.

The settings in the machine data below refer to this data:

• $MC_TOOL_MANAGEMENT_MASK

• $MC_RESET_MODE_MASK

• $MC_START_MODE_MASK

• $MC_TOOL_RESET_NAME

• $MC_CUTTING_EDGE_RESET_VALUE

The tool holder last programmed with SETMTH(x) remains the master tool holder after end of

program and reset, regardless of the machine data setting.

This means that if bit 0=1 and bit 6=1, the offset remains active for the tool which is positioned

in this tool holder.

The machine data setting is active after power on.

This means the offset for the tool which is positioned in the tool holder specified in

$MC_TOOL_MANGEMENT_TOOLHOLDER becomes active; the offset value is that of the small-

est available D no. for this tool

MD22562 $MC_TOOL_CHANGE_ERROR_MODE

Bit

Val

Meaning

Change command for a replacement tool is output.

The status of the disabled spindle tool is ignored. (Exception: un-released tools). The tool

becomes active with the last programmed offset.

Change command for a replacement tool is output.

The spindle tool is set down - "T0" is output.

MD20122 $MC_TOOL_RESET_NAME

Identifier of tool to be loaded

This tool is either loaded when end of program is reached or at reset or Power On if the associated

setting is made in MD $MC_RESET_MODE_MASK, or with NC Start if the respective setting was

made in MD $MC_START_MODE_MASK.

If there are no entries here ($MC_TOOL_RESET_NAME="") this corresponds to "T0".

MD20130 $MC_CUTTING_EDGE_RESET_VALUE

D number of tool which is to be loaded via $MC_TOOL_RESET_NAME.

This means the tool becomes active with the offset set here.

If no entries are made in this machine data, the behavior corresponds to "D0".

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Description of functions

8.4 Tool change box-type, chain, circular magazines

MD20124 $MC_TOOL_MANAGEMENT_TOOLHOLDER

Specifies whether a tool holder number or spindle number is to be specified to define the location

of the tool to be loaded.

MD20090 $MC_SPIND_DEF_MASTER_SPIND

Definition of master spindle in channel. The number of the spindle is set.

MD20310 $MC_TOOL_MANAGEMENT_MASK

Bit 14 is used to activate the reset and start behavior. If bit 14 is not set, the settings in machine

data $MC_RESET_MODE_MASK and $MC_START_MODE_MASK which are specific to tool

management have no meaning.

MD20112 MC_START_MODE_MASK

Bit

Val

Meaning

The last programmed offset remains active.

If the tool on the spindle is disabled, bits 3 and 4 are additionally evaluated in

MD $MC_TOOL_CHANGE_ERROR_MODE.

Start behavior (tool and offset selection) according to MD $MC_TOOL_RESET_NAME and

$MC_CUTTING_EDGE_RESET_VALUE

Start behavior for spindles

Bit

Val

Meaning

The offset that was last selected remains active.

It does not matter whether the offset was selected in the part program or via settings in MD

$MC_RESET_MODE_MASK.

The offset for the tool placed in the master tool holder that was last programmed can also be

active (see $MC_RESET_MODE_MASK)

The tool holder specified in MD $MC_Tool_Management_Toolholder becomes active.

This means an offset selection refers specifically to this tool holder.

Start behavior for tool holder

Bit

Val

Meaning

The offset that was last selected remains active.

It does not matter whether the offset was selected in the part program or via settings in MD

$MC_RESET_MODE_MASK.

The offset for the tool placed in the master spindle that was last programmed can also be active

(see $MC_RESET_MODE_MASK).

The spindle defined in MD20090 $MC_SPIND_DEF_MASTER_SPIND becomes active.

This means an offset selection refers specifically to this spindle.

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Description of functions

8.4 Tool change box-type, chain, circular magazines

Note

A power on always triggers a reset ⇒ The settings in MD20110 $MC_RESET_MODE_MASK are

active after a power on.

Example 1:

In this example, the tool on the spindle is to remain active after end of program (M02/M30) and

reset.

The following applies:

• $MC_TOOL_CHANGE_MODE = 1

• $MC_CUTTING_EDGE_DEFAULT = -2

The following settings need to be made:

$MC_TOOL_MANAGEMENT_MASK

Bit 14=1

for reset and start behavior to be active

$MC_RESET_MODE_MASK

Bit 0=1,

for the tool offset to remain active

Bit 6=1

$MC_START_MODE_MASK

Bit 6=0

for the tool offset to remain active

NC program: %MPFxxx1

N110 T="MILLER_10"

N115 M06

;Tool "MILLER_10" is loaded

N120 G90 G00 D2 X...

;Offset D2 becomes active

…

N850 M30

;Offset D2 remains active

At the next program start tool "MILLER_10" is active with offset D2.

NC program: %MPFxxx2

N10 G90 G00 Z100

;This block is executed with offset D2

Example 2:

The spindle tool is to be removed at the end of program and reset ("automatic T0").

The following applies:

• $MC_TOOL_CHANGE_MODE = 1

• $MC_CUTTING_EDGE_DEFAULT = -2

• One spindle

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Description of functions

8.4 Tool change box-type, chain, circular magazines

The following settings need to be made:

$MC_TOOL_MANAGEMENT_MASK.bit 14 = 1 Reset and start behavior is activated

$MC_RESET_MODE_MASK.bit 0 = 1 and bit 6 = Reset behavior:

• TOOL_RESET_NAME

• CUTTING_EDGE_RESET_VALUE

$MC_TOOL_RESET_NAME=""

Name of the tool that should be loaded at

change with reset. If no name is entered here,

this has the same meaning as T0

$MC_CUTTING_EDGE_RESET_VALUE = 0

The above mentioned tool becomes active

with this offset ("0" ≙ D0)

$MC_START_MODE_MASK.bit 6=0

The tool offset remains active. In the example:

Example 3:

In this example, a specific tool is to be loaded at NC start, e.g. a probe.

The following applies:

• $MC_TOOL_CHANGE_MODE = 1

• $MC_CUTTING_EDGE_DEFAULT = -2

• One spindle

The following settings need to be made:

$MC_TOOL_MANAGEMENT_MASK Bit 14=1

Reset and start behavior is activated

$MC_START_MODE_MASK Bit 6=1

Start behavior

• TOOL_RESET_NAME

• CUTTING_EDGE_RESET_VALUE

$MC_TOOL_RESET_NAME="Probe_1"

Name of the tool that was loaded with reset/

start.

In the example: "Probe_1"

$MC_CUTTING_EDGE_RESET_VALUE=1

The above mentioned tool becomes active

with this offset, here D1

$MC_RESET_MODE_MASK Bit 6=0

Is not relevant for this example

Example 4:

In this example, the tool on the master spindle that was last programmed is to remain active

following end of program (M30/M02) and reset.

The following applies:

• $MC_TOOL_CHANGE_MODE = 1

• $MC_CUTTING_EDGE_DEFAULT = -2

• Two spindles

• $MC_SPIND_DEF_MASTERSPIND=1

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Description of functions

8.4 Tool change box-type, chain, circular magazines

The following settings need to be made:

$MC_TOOL_MANAGEMENT_MASK.bit 14=1 Reset and start behavior is activated

$MC_RESET_MODE_MASK.bit 0=1 and bit 6=1 Leave the tool offset active

$MC_RESET_MODE_MASK.bit 16=1

The last programmed master spindle remains

active.

$MC_START_MODE_MASK.bit 6=0

The current offset remains active.

NC program

Program code

Comment

N05 SETMS(1)

;Spindle becomes master spindle (is also set via MD)

N10 T="Tool1"

N15 M06

;Change to spindle 1

N80 SETMS(2)

;Spindle 2 becomes master spindle

N85 T="Tool2"

N90 M06

;Change to spindle 2

N95 G90 G00 D2 Z...

N230 M30

;It is active: Tool2 with offset D2 on spindle 2

Note

Using MD20310, bit 12 = 1 and the described settings, for each reset a preparation and change

command is output to the PLC and must be acknowledged by the PLC. The automatic positive

acknowledgement can also be used here.

Note

If a change is triggered by reset mode at POWER ON, the NC is stationary with "No NC ready" until

an end acknowledgment has been received for this change.

8.4.25

Repeating a tool change with the same tool identifier

Overview

The behavior for repeated tool changes with identical tool identifier is set using two bits of MD

20310 $MC_TOOLMANAGEMENT_MASK.

Bit 11 = 1

The tool preparation command is also output, if it was already output for the

tool. This setting is only effective as long as the prepared tool is still not located

on the requesting spindle or tool holder.

Bit 12 = 1

The tool preparation command is also output if the tool is already located in the

spindle / tool holder, however it is only issued just one more time.

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Description of functions

8.4 Tool change box-type, chain, circular magazines

The default setting (bit 11 and bit 12=0) is selected so that the preparation command is not

executed if the tool is already located in the spindle / tool holder - or the same preparation was

programmed a multiple number of times.

Exception: Block search

Here the preparation command is always issued even if the tool is already positioned in the

spindle.

Repeating the T preparation before loading

Bit 11 = 0

Bit 11 = 1

N10 T="Tool1" Tool preparation command is out- Tool preparation command is output to

put to the PLC

the PLC

N20 T="Tool1" No output to the PLC (assuming that Tool preparation command is output to

the state of the tool is unchanged) the PLC

N22 M06

Change command to the PLC

A typical application is providing a new tool (positioning a chain) and checking before the

change using the repeated T call.

New programming for the tool that is still able to be used on the tool holder

Example 1:

Bit 12 = 0

Bit 12 = 1

N10 T="Tool1" Tool preparation command to the PLC Tool preparation command to the PLC

N12 M06

Tool change command to the PLC

N20 T="Tool2" Tool preparation command to the PLC Tool preparation command to the PLC

N30 T="Tool1" No output to the PLC. This preparation

Tool preparation command to the PLC.

replaces the preparation from block

This preparation replaces (as for bit 12

N20; it is identified that a tool, which

= 0) the preceding T preparation from

can be used from group "Tool1", has

N20. The checks on the NC side are

already been loaded.

identical. However, as a result of the

machine data setting, command out-

put is forced.

N32 M06

No change command to the PLC

Tool change command to the PLC be-

cause a tool preparation command

from block N30 was output.

If bit 12 = 0, the preparation command from block N30 is deleted in NCK. In the programming,

it appears as if N10, N12 and N32 were programmed. As the state of the tool "Tool1" on the tool

holder has not changed, M06 is not output to the PLC.

For this example, bit 11 has no significance.

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Description of functions

8.4 Tool change box-type, chain, circular magazines

Example 2:

Bit 12 = 0

Bit 12 = 1

N10 T="Tool1" Tool preparation command to the PLC Tool preparation command to the PLC

N12 M06

Tool change command to the PLC

N20 T="Tool1" No output to the PLC

Tool preparation command to the PLC

N30 T="Tool1" No output to PLC independently of bit

Output to PLC dependent upon bit 11

11 (there is no command which could

(bit 11 is considered within bit 12 = 1).

be output again)

N32 M06

No change command to the PLC

Tool change command to the PLC be-

cause a tool preparation command

from block N20 or N30 was output.

If bit 12 = 0, the preparation command from block N20 is deleted in NCK. In the programming,

it appears as if N10, N12 and N32 were programmed. As the state of the tool "Tool1" on the tool

holder has not changed, M06 is not output to the PLC.

Bit 12 is the higher-level setting and bit 11 only takes effect if something is to be output for bit

12 = 1.

New programming for the tool that can no longer be used on the tool holder

The time monitoring has, for example, set the tool to the "disabled" state.

N10 T = "Tool1" Tool preparation command to PLC

N12 M06

Tool change command to PLC

N20 T = "Tool2"

Tool preparation command to PLC

N30 T = "Tool1"

This tool preparation replaces the tool preparation from N20; tool man-

agement detects that a tool from group "Tool1" is loaded but that the tool

can no longer be used. A replacement tool is searched for in the tool group

and the tool preparation command is output to the PLC.

N32 M06

The tool change command N32 is output to the PLC.

For this example, bit 11 and bit 12 have no significance.

Condition for processing a new tool preparation command in the NC

N10 T = "Tool1"

N20 T = "Tool2" A command is only processed in the main run if the preceding command

from the PLC was acknowledged with "End".

The does not apply if N20 is not output to the PLC. Then the "End" acknowledgement must be

present for a new tool preparation command to be output to the PLC.

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Description of functions

8.4 Tool change box-type, chain, circular magazines

Condition for processing a new tool change command in the NC

N10 T = "Tool1"

N12 M06

If bit 10=0 in $MC_TOOL_MANAGEMENT_MASK:

A command is also processed in the main run if the preceding tool prep-

aration command from the PLC has not yet been acknowledged with

"End".

If bit 10=1 in $MC_TOOL_MANAGEMENT_MASK:

A command is only processed in the main run if the preceding tool prep-

aration command from the PLC has been acknowledged with "End".

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Description of functions

8.5 Relocating tools and positioning the magazine

8.5

Relocating tools and positioning the magazine

8.5.1

Relocating sequence

Basics

When it is relocated, a tool is transported from one magazine location to another. The relocation

takes place according to the following steps with DB71 (Page 125):

• The target address, the magazine, and the location for the tool to be relocated are transferred

via DB71.DBW(n+24) and DBW n+26.

• The origin of the tool is entered in DB71.DBW(n+20) and DBW(n+22).

• The target address is passed to FC8/FC6 as parameters "NewToolMag" and "NewToolLoc" and

status = 1 when relocation has been successfully completed.

• The parameters "OldToolMag" and "OldToolLoc" must be set to zero because the tool

management knows the location of the old tool.

• All relocation tasks are generally handled via the 1st interface of DB71.

The following graphic schematically shows the process of relocating via a loading magazine.

Alternatively, a buffer (spindle or gripper) can also be used:

0DJD]LQ

Figure 8-31

Relocate tool

Tool management

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Description of functions

8.5 Relocating tools and positioning the magazine

The process is started, for example, via the "Relocate" command in SINUMERIK Operate.

Relocate - select tool

Relocate - execute

The following graphic shows an example of the parameterization of a relocation with DB71 and

FC6.

Example of relocating a tool

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Figure 8-32

Relocate - DB71

Tool management

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443

Description of functions

8.5 Relocating tools and positioning the magazine

8.5.2

Relocation by the PLC

Task from PLC

The PLC can also issue a task to tool management to relocate a tool. This is done by notifying a

new location for the tool to the tool management. The FC8/FC6 block (TaskIdent := 4) is called

with the following parameters:

• Old magazine no. (OldToolMag)

• Old location no. (OldToolLoc)

• New magazine no. (NewToolMag)

• New location no. (NewToolLoc)

PLC sample programs

The following sample programs (definition of DB150 (Page 122)) show the acknowledgement

of loading via interface 1. To this end, the network is programmed in an FC150 user block.

Sample program "Load magazine"

NETWORK TITLE = Acknowledgement relocation interface 1

E 86.0; //acknowledgement is done here via the terminal E 86.0

DB71.DBX

0.1; //Interface 1 active

DB71.DBX

4.2; //Loading active

M 150.4;

SPBN

M140;

DB150.DBB

0; //DB71

DB150.DBB

1; //Interface 1

DB71.DBW

28;

DB150.DBW

2; //Target magazine for relocation

DB71.DBW

30;

DB150.DBW

4; //Target location for relocation;

DB71.DBW

24;

DB150.DBW

6; //Source magazine for relocation

DB71.DBW

26;

DB150.DBW

8; //Source location for relocation

DB71.DBW

28;

W#16#270E;

<>I ;

SPB

M142; //Relocation in spindle? No->

DB150.DBW

10; //Status 6

SPA

M141;

M142: L

DB150.DBW

10; //Status 1

M141: L

-1;

DB150.DBW

12;

SET ;

DB150.DBX

16.0; //Start FC6

M140: NOP 0;

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Description of functions

8.5 Relocating tools and positioning the magazine

Example of a transfer with FC6

NETWORK TITLE =Tool management status transfer

CALL FC 6 (//Tool management transfer block

Start

:= DB150.DBX 16.0,//Start

TaskID

:= DB150.DBB 0,

TaskIDNo

:= DB150.DBB 1,

NewToolMag

:= DB150.DBW 2,//Pos new tool

NewToolLoc

:= DB150.DBW 4,

OldToolMag

:= DB150.DBW 6,//Pos old tool

OldToolLoc

:= DB150.DBW 8,

Status

:= DB150.DBW 10,//Status

MultitoolLoc

:= DB150.DBW 12,

Ready

:= DB150.DBX 16.1,

Error

:= DB150.DBW 14);

DB150.DBX

16.1; //Ready prompt

DB150.DBX

16.0; //Reset start

DB150.DBW

14; //Error information

L 0;

<>I ; //Evaluate error

DB150.DBX 16.0; //Reset start

Example 1

The tool in magazine No. 1, location No. 5 is to be relocated to magazine No. 2, location No. 17.

The PLC takes responsibility for ensuring that the location type is correct for the transfer. This

example for calling an FC8 does not take into consideration any checkback signal to tool

management for intermediate positions of tools.

FC8 parameters

Values

Comment

Start

Starts task

TaskIdent

Task from PLC

TaskIdentNo

Channel No. for tool management

NewToolMag

New magazine No.

NewToolLoc

New location No.

OldToolMag

Old magazine No.

OldToolLoc

Old location No.

Status

Operation completed

Example 2

Example: The tool is to be relocated from mag. No. 1, location No. 5 via grippers 3 and 4 to mag.

No. 2, location No. 17.

FC8/FC6 must be called four times in this procedure. Only the important parameters are listed.

All other parameters are as for the example above.

The tool is transported in 4 steps:

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Description of functions

8.5 Relocating tools and positioning the magazine

1. From magazine 1, location 5 to gripper 3 (location no. 4)

FC8 parameters

Values

Comment

Start

Starts task

TaskIdent

Task from PLC

TaskIdentNo

Channel No. for tool management

NewToolMag

9998

New magazine No.

NewToolLoc

New location No.

OldToolMag

Old magazine No.

OldToolLoc

Old location No.

Status

Operation completed

2. Moved from gripper 3 to transfer location 2, location no. 6.

FC8 parameters

Values

Comment

Start

Starts task

TaskIdent

Task from PLC

TaskIdentNo

Channel No. for tool management

NewToolMag

9998

New magazine No.

NewToolLoc

New location No.

OldToolMag

9998

Old magazine No.

OldToolLoc

Old location No.

Status

Operation completed

3. Moved from transfer location 2, location no. 6 in gripper 4, location no. 5.

FC8 parameters

Values

Comment

Start

Starts task

TaskIdent

Task from PLC

TaskIdentNo

Channel No. for tool management

NewToolMag

9998

New magazine No.

NewToolLoc

New location No.

OldToolMag

9998

Old magazine No.

OldToolLoc

Old location No.

Status

Operation completed

4. From gripper 4, location no. 5 to magazine 2, location 17

FC8 parameters

Values

Comment

Start

Starts task

TaskIdent

Task from PLC

TaskIdentNo

Channel No. for tool management

NewToolMag

New magazine No.

NewToolLoc

New location No.

OldToolMag

9998

Old magazine No.

OldToolLoc

Old location No.

Status

Operation completed

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Description of functions

8.5 Relocating tools and positioning the magazine

Note

TaskIdent 5 may be programmed only for a tool transfer (magazine → buffer location).

Otherwise an error message is output, even though the tool is transferred.

The reservation is automatically reset when the tool is transferred from the buffer back into the

magazine.

8.5.3

Positioning the magazine

Overview

When positioning, a traversing task is sent to the PLC by the tool management via DB71

(Page 125).

• Bit 3 is set in DB71.DBB(n+0) "Position to the loading point".

• The magazine No. and the location No. (as target) are transferred in the parameters

DB71.DBW(n+20) and (n+22) during positioning.

The PLC then moves this location to the loading point. The number of the loading point is

entered in DB71.DBW (n+18) or determined by the number of the interface. If the PLC has moved

the magazine location to the loading point, FC8/FC6 is called and the operation is acknowledged

with status 5, position change. For loading point 2, n = 34.

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Figure 8-33

Positioning a magazine location

Example:

Location 5 in magazine 1 (source) must be moved to the loading magazine 2 (target).

Tool management

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Description of functions

8.5 Relocating tools and positioning the magazine

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Figure 8-34

Positioning DB71

Parameters "OldToolMag" and "OldToolLoc" in FC8/FC6 are not required for positioning because

only the PLC requires the information for traversing the magazine. The values for NewToolMag

and NewToolLoc are from DB71(n+24 and n+26). The PLC has to execute the positioning task

and acknowledge it with the FC8/FC6 call.

Initiate positioning via Operate

The selected magazine location is moved to the loading point via the "Positioning" softkey.

Figure 8-35

Positioning a magazine location

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Description of functions

8.5 Relocating tools and positioning the magazine

PLC sample programs (user program FC150)

The following sample programs (description of DB150 (Page 122)) show the acknowledgement

of loading via interface 2. To this end, the network is programmed in an FC150 user block.

Example program "Position magazine"

NETWORK TITLE = Acknowledgement positioning interface 2

U E 86.0; //acknowledgement is done here via the terminal E 86.0

U DB71.DBX 0.1; //Interface 2 active

U DB71.DBX 34.3; //Magazine pos. active

FP M 150.5;

SPBN M150;

L 1;

T DB150.DBB 0; //DB71

L 2;

T DB150.DBB 1; //Interface 2

L DB71.DBW 58;

T DB150.DBW 2; //Target magazine for positioning

L DB71.DBW 60;

T DB150.DBW 4; //Target location for positioning

L 0;

T DB150.DBW 6;

T DB150.DBW 8;

L 1;

T DB150.DBW 10; //Status 5

L -1;

T DB150.DBW 12;

S DB150.DBX 16.0; //Start FC6

M150: NOP 0;

Example of a transfer with FC6

NETWORK TITLE =Tool management status transfer

CALL FC 6 (//Tool management transfer block

Start

:= DB150.DBX 16.0,//Start

TaskID

:= DB150.DBB 0,

TaskIDNo

:= DB150.DBB 1,

NewToolMag

:= DB150.DBW 2,//Pos new tool

NewToolLoc

:= DB150.DBW 4,

OldToolMag

:= DB150.DBW 6,//Pos old tool

OldToolLoc

:= DB150.DBW 8,

Status

:= DB150.DBW 10,//Status

MultitoolLoc

:= DB150.DBW 12,

Ready

:= DB150.DBX 16.1,

Error

:= DB150.DBW 14);

U DB150.DBX 16.1; //Prompt ready

R DB150.DBX 16.0; //Reset start

L DB150.DBW 14; //Error information

L 0;

<>I ; //Evaluate error

R DB150.DBX 16.0; //Reset start

Tool management

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Description of functions

8.6 Several tools at a magazine location (multitool)

8.6

Several tools at a magazine location (multitool)

8.6.1

Brief description

Overview

With the TMMG function (magazine management) and when the "Multitools" function (MT) is

also activated, so-called multitools with a number of tools can be loaded into a magazine and

unloaded from a magazine like a tool.

A multitool is a mini turret with a number of tools that is loaded to a magazine and unloaded

from a magazine as one tool in the turning technology. The T selection in the part program also

detects and checks the tools of a multitool when searching for a tool.

Note

This function is supported in SINUMERIK Operate only.

Note

The following functions are not implemented in the current version:

• Manual tool (a multitool cannot be a manual tool)

• Magazine location adapter (a multitool can be located on an adapter, but adapters are not

permitted on multitool locations)

The T selection in the part program also detects and checks the tools of a multitool when

searching for a tool.

A multitool has a definable number of MT locations, where tools can be located. The geometrical

arrangement of the MT locations can either be defined using the MT location number, an angle

or via a distance.

The commands to select a tool and to change a tool sent to the PLC have additional information

regarding the distance reference point or the machining position:

• MT location number of the tool in the multitool, or

• Angle, or

• Distance of the tool within the multitool

This type of distance coding can be defined for each MT. The PLC then initiates the corresponding

machine handling, e.g. moving a positioning axis.

The acknowledgement block FC6 is provided in the PLC basic program. The block corresponds to

FC8. It only has one additional parameter "MultitoolPosition". The FC6 includes the complete

FC8 functionality, so that the FC6 can completely replace the FC8. Analogous to DB71, DB72 and

DB73, data blocks DB1071, DB1072 and DB1073 are available as user interface. If, for example,

a multitool is changed, then the complete information of the "carrier tool" is contained in DB72,

and all the information about the individual tool in DB1072.

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Description of functions

8.6 Several tools at a magazine location (multitool)

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Figure 8-36

Location number

The figure shows the distance coding of the locations in the multitool, i.e. the MT location

number of the particular MT location itself. This distance coding is especially suitable for

machines that operate with similar multitool geometries, e.g. only mini turrets.

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Figure 8-37

Angle and length

Typical geometries can be seen in this figure. Angle α and the lengths are output on the PLC. This

means, for example, that multitools can be used on a machine and handled by the PLC, which

have different geometries (MT locations are not symmetrically arranged: Although multitools

are inherently symmetrical, different multitools have different distances between the MT

locations).

Tool management

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Description of functions

8.6 Several tools at a magazine location (multitool)

The distance reference point or the machining position is defined machine-specifically. The

assignment of the MT location numbers to the multitool locations must correspond to the

machine construction.

A multitool can contain tools from different tool groups, i.e. the names can be different.

Nothing changes when programming a tool change in the part program. Formally, the

commands are identical to existing commands; i.e. the tool change is programmed using T and/

or M06.

For the function T = turret location number, it is also necessary to define which tool of the turret

magazine is meant when the location contains more than one tool.

Note

Presently, SINUMERIK Operate supports the distance coding "angle" and "location number".

①

Magazine: $TC_MAP...

②

Magazine location: $TC_MAPP...

③

Multitool: $TC_MTP...

④

Magazine location adapter

⑤

Multitool location: $TC_MTPP...

⑥

Tool: $TC_TP.../$TC_DP...

Figure 8-38

Multitool shown in the magazine

The following machine data and NC commands are available for the "multitool" function:

Machine data

• $MN_MM_TOOL_MANAGEMENT_MASK, bit 10

Activation of the MT function

• $MN_MM_NUM_MULTITOOL

Number of defined MT (limit values: 0-1500; max. 600 per channel)

• $MN_MAX_TOOLS_PER_MULTITOOL

Max. number of tool locations per MT (limit values: 2-64)

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Description of functions

8.6 Several tools at a magazine location (multitool)

NC commands / system parameters

• $TC_MTP, $TC_MTPP

Data definition for MT and MT location

• $TC_MTPC, $TC_MTPPC

MT OEM data for tool management

• $TC_MTPCS, $TC_MTPPCS

MT OEM data for Siemens

• NEWMT, DELMT

Creating, deleting

• POSMT

Positioning MT on tool holder MT location number

• $P_TMNOIS

What type does the number refer to: Magazine, tool or MT

• $P_MTOOLN, $P_MTOOLMT

Number of multitools, MT number of the i-th MT

• $P_MTOOLNT, $P_MTOOLT

Number of tools in the multitool, T number of the i-th tool

• $A_TOOLMTN, $A_TOOLMTLN

Location of the tool in the multitool, MT number / MT location number

• Synchronized action access in the tool management PLC command

$AC_TC_MTTN, $AC_TC_MTLTN, $AC_TC_MTNLOC, $AC_TC_TOOLIS, $AC_TC_MTDIST

NC commands

• RESETMON

Can reset the tool monitoring data of the tools in an MT to their setpoints

• GETT

Determines T no., MT no. for the name

• DELMLOWNER

Deletes the magazine owner location of the tool or MT

• MVTOOL

Moves tool or MT

• GETFREELOC

Searches for an empty location in the magazine for tool or MT, searches for an empty location

in the MT for tool

8.6.2

Programming

MT numbers

The multitool numbers originate from the same number space as the T numbers and the

magazine numbers.

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Description of functions

8.6 Several tools at a magazine location (multitool)

Numbers 1-32000 are permitted for the T and magazine numbers. This allows multitools to be

handled just like simple tools (T number at the magazine location, T number as parameter in the

OPI PI service to load and unload tools, etc.). In addition, in some instances MT numbers can be

handled just like magazine numbers.

Users can explicitly enter T or MT numbers in the NC programming, if they want to create a tool

or multitool by programming $TC_TPx or $TC_MTPx. Explicitly programmed MT numbers must

not collide with already defined T numbers or magazine numbers. The programming is then

aborted with an alarm. However, if users create a new tool with the language command NEWT

- or for multitools with NEWMT - then the NC automatically allocates the T or MT numbers.

When automatically allocating an MT number, it is ensured that this is neither an already

defined tool nor an already defined magazine.

NC language commands or system parameters, which have a tool T number or magazine

number as parameter or index, and which are called using an MT number, generate an alarm if

the associated functionality for multitool is not explicitly defined.

The same number can be used for a tool and a magazine.

Example 1:

The magazine numbers 1, 2, 3, -, 5, -, -, - and the T numbers 1, -, 3, -, 5, 6, -, -, have already been

defined.

Then -, -, -, 4, -, -, 7, 8 are available for the MT numbers.

Example 2:

The magazine numbers 1, 2, 3, -, 5, -, -, - and the MT numbers -, -, -, 4, -, 6, 7, -, have already been

defined.

Then 1, 2, 3, -, 5, -, -, 8 are available for the T numbers.

MT names

Multitool names come from the same namespace as the tool names and magazine names.

Different multitools must have different names, i.e. a duplo number is not defined.

An MT name must not be the same as a tool name and not the same as a magazine name.

Hoever, a magazine name can be the same as a tool name.

8.6.3

Tool change with a tool from a multitool

Overview

A tool change for a multitool means, on the one hand, the change of the multitool itself and, on

the other hand, the change of the tool on the multitool.

The programming of a tool change for a multitool is done via the commands "T=.." and M06. The

following programming selects an appropriate tool from the tool group "Mill_150" and loads it:

T= "Miller_150"

M06

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Description of functions

8.6 Several tools at a magazine location (multitool)

If, corresponding to the tool search strategy, the tool found is located in a multitool, then this

does not play a role regarding activating the offset. The multitool is only involved when the data

for the tool change command is being compiled. The NC determines the distance value (->MT

location number or $TC_MTPPL/$TC_MTPPA) and adds this to the PLC command. For the tool

change itself, the multitool (with its individual tools) is moved from the magazine to the tool

holder. Using the data "Multitool location distance" that the NC sends with the tool change data

to the PLC, the PLC program must appropriately initiate the machine so that the active tool within

the multitool can machine the workpiece.

The state of tools within the multitool in question, which are not involved in an MT motion

operation, tool selection, tool change, does not change.

If programmed

T="name" M06 D1

and the name is that of a multitool, then Alarm 6404 "Tool change not possible" is generated.

Tool change from a multitool to a tool holder - PLC request

Example 1:

A multitool with four locations is in magazine 1, location 10, and has the TNo = 23. Angle

distance coding has been selected for the multitool; i. e. $TC_MTP_KD[23] = 3

The setting is $MC_TOOL_CHANGE_MODE=1, i.e. tool changed with M06.

The data of the defined and loaded multitool looks like this:

$TC_MTPN[23]=4

Number of locations

$TC_MTP2[23]="Multitool_ Identifiers

$TC_MTP3[23]=2

Number of half locations (right), i.e. the multitool is over-

sized

$TC_MTP4[23]=2

Number of half locations (left)

$TC_MTP5[23]=2

Number of half locations (top)

$TC_MTP6[23]=2

Number of half locations (bottom)

$TC_MTP7[23]=1

Location type

$TC_MTP8[23]=130

Tool status (enabled, was in use)

$TC_MTP_POS[23]=2

MT position (is not evaluated, if the tool is located in the

magazine)

$TC_MTP_KD[23]=3

Distance coding (3 = angle)

$TC_MTP_PROTA[23]=""

Data for protection zone

$TC_MTPP2[23,1]=0

Location_1 - location type

$TC_MTPP4[23,1]=0

Location_1 - location state (occupied)

$TC_MTPP6[23,1]=1

Location_1 - equipped with T-No.1 ("Tool1")

$TC_MTPP7[23,1]=0

Location_1 - adapter No.

$TC_MTPPA[23,1]=0

Distance-angular value

$TC_MTPP2[23,2]=0

Location_2 ...

$TC_MTPP4[23,2]=0

$TC_MTPP6[23,2]=2

equipped with T-No.2 ("Tool2")

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Description of functions

8.6 Several tools at a magazine location (multitool)

$TC_MTPP7[23,2]=0

$TC_MTPPA[23,2]=90

$TC_MTPP2[23,3]=0

Location_3 ...

$TC_MTPP4[23,3]=0

$TC_MTPP6[23,3]=3

equipped with T-No.3 ("Tool3")

$TC_MTPP7[23,3]=0

$TC_MTPPA[23,3]=180

$TC_MTPP2[23,4]=0

Location_4

$TC_MTPP4[23,4]=0

$TC_MTPP6[23,4]=4

equipped with T-No.4 ("Tool4")

$TC_MTPP7[23,4]=0

$TC_MTPPA[23,4]=270

The following is programmed:

T="Tool3";

• Change tool or multitool from location 1/10 to the tool holder 9998/1

• Tool number 23 of the multitool is output.

• The T-number 3 of the selected tool in the multitool.

Tool is contained in Multitool; distance specification has the unit angle

The tool with the tool number = 3 in the multitool no. = 23 is put into the machining position on

location 3.

The PLC user interface looks like this:

DB72

DBB0

00000001

Interface 1 active

DBB(n+4)

00000100

Prepare change

DBB(n+5)

10000000

Data available in the extended range (DB

1072)

DBW(n+20)

Source new tool (magazine)

DBW(n+22)

Source new tool (location)

DBW(n+24)

Target old tool (magazine)

DBW(n+26)

Target old tool (location)

DBW(n+28)

New tool: Location type

DBW(n+30)

New tool: Size left

DBW(n+36)

New tool: Size bottom

DBW(n+38)

162

New tool: Status

(enabled, was in use, being changed)

DBW(n+40)

New tool: T number

The "Carrier tool" in which the preselected tool is loaded is transported. That it now involves a

multitool is indicated by setting DB72.DBB(n+1), bit7 "extended data available (DB1072)".

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Description of functions

8.6 Several tools at a magazine location (multitool)

The data of the specifically preselected tool ("Tool3") is now in DB1072.

DB1072

DBW(n+0)

Distance coding (angle)

DBW(n+2)

Number of locations in the multitool

DBD(n+4)

180

Location distance (3rd location, corre-

sponds to 180 degrees)

DBW(n+8)

New tool: Multitool number

DBW(n+10)

New tool: Location number in the multi-

tool → it is mandatory that the PLC ac-

knowledges this position

DBW(n+12)

Old tool: Multitool number

DBW(n+14)

Old tool: Location number in the multitool

DBW(n+16)

New tool: Location type

DBW(n+18)

New tool: Size left

DBW(n+24)

New tool: Size bottom

DBW(n+26)

New tool: Status

DBW(n+28)

New tool: T number

DBW(n+30)

New tool: Tool holder or spindle number

DBW(n+32)

New tool: Original magazine (is identical

with DB72.DBW(n+44))

DBW(n+34)

New tool: Original location (is identical

with DB72.DBW(n+46))

The FC6 can be parameterized as follows.

Assumption: the prepared tool or multitool is not moved and remains in the magazine.

FC6 parameters

Values

Comment

Start

Starts task

TaskIdent

DB72 interface

TaskIdentNo

No. of active interface

NewToolMag

Source for new tool: Magazine DB72.DBW(n+20) -

NewToolLoc

Source for new tool: Location DB72.DBW(n+22)

OldToolMag

Target for old tool: Magazine = "0" there is no old tool

OldToolLoc

Target for old tool: Location= "0" there is no old tool

Status

Exit operation

MultitoolLoc

Multitool position - DB1072.DBW(n+10) The position, in this case (tool remains

in the magazine), has no significance. It can be acknowledged with the position

from DBW(n+10), but also with "0" or "-1".

This also applies to intermediate acknowledgements. The NC only evaluates the

multitool position with the final acknowledgement of the change.

Ready

Feedback from FC6

Error

Feedback from FC6

M06 ;

The signal DB72.DBB(n+0)Bit1 "Perform change" is set.

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Description of functions

8.6 Several tools at a magazine location (multitool)

The FC6 can be parameterized as follows.

Assumption: The prepared tool or multitool was already transported and here, in the example,

only the final acknowledgement is programmed.

FC 6 parameters

Values

Comment

Start

Starts task

TaskIdent

DB72 interface

TaskIdentNo

No. of active interface

NewToolMag

9998

Target for new tool: Magazine = buffer

NewToolLoc

Target for new tool: Location = spindle

OldToolMag

Target for old tool: Magazine = "0" there is no old tool

OldToolLoc

Target for old tool: Location= "0" there is no old tool

Status

Exit operation

MultitoolLoc

Multitool position - DB1072.DBW(n+10) must now be forcibly acknowledged

with the correct position from DBW(n+10).

Ready

Feedback from FC6

Error

Feedback from FC6

D2 ; activate the offset of the tool with tool number = 3.

A new tool that is located in the same multitool is programmed:

T="Tool1" ;

The tool/multitool is already on the tool holder.

For the user interface this means:

• No transport task for the "carrier tool".

DB72

DBB0

00000001

Interface 1 active

DBB(n+4)

00000100

Prepare change

DBB(n+5)

10000000

Data in the extended range (DB1072)

DBW(n+20)

9998

Source new tool (magazine)

DBW(n+22)

Source new tool (location)

DBW(n+24)

Target old tool (magazine)

DBW(n+26)

Target old tool (location)

DBW(n+28)

New tool: Location type

DBW(n+30)

New tool: Size left

DBW(n+36)

New tool: Size bottom

DBW(n+38)

162

New tool: Status (enabled, was in use, be-

ing changed)

DBW(n+40)

New tool: T number

• The relevant data for the new tool is located in DB1072.

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8.6 Several tools at a magazine location (multitool)

DB1072

DBW(n+0)

Distance coding (angle)

DBW(n+2)

Number of locations in the multitool

DBD(n+4)

Location distance (1st location, corre-

sponds to 0 degrees)

DBW(n+8)

New tool: Multitool number

DBW(n+10)

New tool: Location number in the multi-

tool → it is mandatory that the PLC ac-

knowledges this position

DBW(n+12)

Old tool: Multitool number

DBW(n+14)

Old tool: Location number in the multitool

DBW(n+16)

New tool: Location type

DBW(n+18)

New tool: Size left

DBW(n+24)

New tool: Size bottom

DBW(n+26)

New tool: Status

DBW(n+28)

New tool: T number

DBW(n+30)

New tool: Tool holder or spindle number

DBW(n+32)

New tool: Original magazine (is identical

with DB72.DBW(n+44))

DBW(n+34)

New tool: Original location (is identical

with DB72.DBW(n+46))

M06 ; generates the PLC command = 3.

The FC6 can be parameterized as follows.

FC6 parameters

Values

Comment

Start

Starts task

TaskIdent

DB72 interface

TaskIdentNo

No. of active interface

NewToolMag

9998

Target for new tool: Magazine = buffer

NewToolLoc

Target for new tool: Location = spindle

OldToolMag

Target for old tool: Magazine = "0" there is no old tool

OldToolLoc

Target for old tool: Location= "0" there is no old tool

Status

Operation completed

MultitoolLoc

Multitool position - DB1072.DBW(n+10) must now be forcibly acknowledged

with the correct position from DBW(n+10)

Ready

Feedback from FC6

Error

Feedback from FC6

D1 ; activate the offset of the tool with T-No. = 17

SINUMERIK 840D sl. Service - Functions. Manual (2018-2020) - page 87