Content      ..     15      16      17      18     ..

FANUC Series 0i-MC. OPERATOR’S MANUAL - page 17

3. MANUAL OPERATION

OPERATION

B-64124EN/01

The tool is returned to the reference position as follows :

3.1

The tool is moved in the direction specified in parameter ZMI (bit 5 of No.

MANUAL

1006) for each axis with the reference position return switch on the

REFERENCE

machine operator’s panel. The tool moves to the deceleration point at the

rapid traverse rate, then moves to the reference position at the FL speed.

POSITION RETURN

The rapid traverse rate and FL speed are specified in parameters (No.

1420,1421, and 1425).

Fourstep rapid traverse override is effective during rapid traverse.

When the tool has returned to the reference position, the reference

position return completion LED goes on. The tool generally moves along

only a single axis, but can move along three axes simultane ously when

specified so in parameter JAX(bit 0 of No.1002).

Reference

position

ÇÇ

ÇÇ

Deceleration

ÇÇ

point

ÇÇ

ÇÇ

ÇÇ

Rapid traverse motion

Decelerated

motion

Rapid traverse rate

FL speed

(rapid traverse override is

effective)

Procedure for Manual Reference Position Return

Procedure

1

Press the reference position return switch, one of the mode selection

MODE

swithces.

EDIT

MEMORY

REMOTE

MDI

2

To decerease the feedrate, press a rapid traverse override switch.

HANDLE

JOG

ZERO

TEACH

RETURN

When the tool has returned to the reference position, the reference

position return completion LED goes on.

RAPID TRAVERSE

OVERRIDE (%)

3

Press the feed axis and direction selection switch corresponding to the

F0

25

50

100

axis and direction for reference position return. Continue pressing the

switch until the tool returns to the reference position. The tool can be

AXIS DIRECTION

moved along three axes simultaneously when specified so in an

appropriate parameter setting. The tool moves to the deceleration

+C

+Z

+Y

point at the rapid traverse rate, then moves to the reference position at

the FL speed set in a parameter.

-X

RAPID

+X

4

Perform the same operations for other axes, if necessary.

–Y

-Z

-C

The above is an example. Refer to the appropriate manual provided by

the machine tool builder for the actual operations.

ZERO POSITION

MIRRROR IMAGE

X Y Z C

X Y Z

PROGRAM

M02/

MANU

SPINDLE

ATC

STOP

M30

ABS

ORI

TAP

READY

NC? MC?

464

3. MANUAL OPERATION

OPERATION

B-64124EN/01

3.2

In the jog mode, pressing a feed axis and direction selection switch on the

JOG FEED

machine operator’s panel continuously moves the tool along the selected

axis in the selected direction.

The jog feedrate is specified in a parameter (No.1423)

The jog feedrate can be adjusted with the jog feedrate override dial.

MODE

Pressing the rapid traverse switch moves the tool at the rapid traverse

EDIT

MEMORY

REMOTE

MDI

feedrate (No. 1424) regardless of the postiotion of the jog feedrate

override dial. This function is called the manual rapid traverse.

HANDLE

TEACH

JOGÂÂ

RETURN

Manual operation is allowed for one axis at a time. 3 axes can be

ÂÂ

selected at a time by parameter JAX (No.1002#0).

Z

ÇÇ

ÇÇ

ÇÇ

Y

While a switch is pressed, the

tool moves in the direction

X

specified by the switch.

Procedure for JOG feed

AXIS DIRECTION

Procedure

1

Press the jog switch, one of the mode selection switches.

+C

+Z

+Y

2

Press the feed axis and direction selection switch corresponding to the

axis and direction the tool is to be moved. While the switch is pressed,

–X

RAPID

+X

the tool moves at the feedrate specified in a parameter (No. 1423).

The tool stops when the switch is released.

-Y

-Z

-C

3

The jog feedrate can be adjusted with the jog feedrate override dial.

4

Pressing the rapid traverse switch while pressing a feed axis and

direction selection switch moves the tool at the rapid traverse rate

while the rapid traverse switch is pressed. Rapid traverse override by

the rapid traverse override switches is effective during rapid traverse.

0

2000

The above is an example. Refer to the appropriate manual provided

by the machine tool builder for the actual operations.

JOG FEED RATE OVERRIDE

RAPID TRAVERSE

OVERRIDE (%)

F0

25

50

100

466

3. MANUAL OPERATION

OPERATION

B-64124EN/01

In the incremental (INC) mode, pressing a feed axis and direction

3.3

selection switch on the machine operator’s panel moves the tool one step

INCREMENTAL FEED

along the selected axis in the selected direction. The minimum distance

the tool is moved is the least input increment. Each step can be 10, 100,

or 1000 times the least input increment.

This mode is effective when a manual pulse generator is not connected.

Z

Each time a switch is

Tool

pressed, the tool moves

one step in the direction

specified by the switch.

Y

X

Procedure for Incremental Feed

1

Press the INC switch, one of the mode selection switches.

2

Select the distance to be moved for each step with the

X10

X100

magnification dial.

3

Press the feed axis and direction selection switch corresponding to

the axis and direction the tool is to be moved. Each time a switch

X1

X1000

is pressed, the tool moves one step. The feedrate is the same as the

jog feedrate.

4

Pressing the rapid traverse switch while pressing a feed axis and

AXIS DIRECTION

direction selection switch moves the tool at the rapid traverse rate.

Rapid traverse override by the rapid traverse override switch is

+C

+Z

+Y

effective during rapid traverse.

–X

RAPID

+X

The above is an example. Refer to the appropriate manual provided

-Y

-Z

-C

by the machine tool builder for the actual operations.

468

B-64124EN/01

OPERATION

3. MANUAL OPERATION

3.4

In the handle mode, the tool can be minutely moved by rotating the

manual pulse generator on the machine operator’s panel. Select the axis

MANUAL HANDLE

along which the tool is to be moved with the handle feed axis selection

FEED

switches.

The minimum distance the tool is moved when the manual pulse

generator is rotated by one graduation is equal to the least input increment.

Or the distance the tool is moved when the manual pulse generator is

rotated by one graduation can be magnified by 1 times, 10 times, or by

one of the two magnifications (total four magnifications) specified by

parameters (No. 7113 and 7114).

In addition to using parameters No. 7113 and No. 7114 to set arbitrary

magnifications common to all axes, the user can use parameters No.

12350 and No. 12351 to set arbitrary magnifications independently for

individual axes.

When parameter No. 12350 has no value, parameter No. 7113 is used;

when parameter No. 12351 has no value, parameter No. 7114 is used.

These parameters are also valid for manual handle interruption.

Z

Y

X

ÇÇ

ÇÇ

ÇÇ

Manual pulse generator

Procedure for Manual Handle Feed

1

Press the HANDLE switch, one of the mode selection switches.

MODE

2

Select the axis along which the tool is to be moved by pressing a

EDIT

MEMORY

REMOTE

MDI

handle feed axis selection switch.

HANDLE

JOG

ZERO

TEACH

RETURN

3

Select the magnification for the distance the tool is to be moved by

pressing a handle feed magnification switch. The distance the tool is

moved when the manual pulse generator is rotated by one graduation

is: Least input increment multiplied by magnification.

4

Move the tool along the selected axis by rotating the handle. Rotating

the handle 360 degrees moves the tool the distance equivalent to 100

graduations.

The above is an example. Refer to the appropriate manual provided

by the machine tool builder for the actual operations.

Manual pulse generator

469

B-64124EN/01

OPERATION

3. MANUAL OPERATION

Restrictions

D Number of MPGs

Up to three manual pulse generators can be connected, one for each axis.

The three manual pulse generators can be simultaneously operated.

WARNING

Rotating the handle quickly with a large magnification such

as x100 moves the tool too fast. The feedrate is clamped

at the rapid traverse feedrate.

NOTE

Rotate the manual pulse generator at a rate of five rotations

per second or lower. If the manual pulse generator is

rotated at a rate higher than five rotations per second, the

tool may not stop immediately after the handle is no longer

rotated or the distance the tool moves may not match the

graduations on the manual pulse generator.

471

3. MANUAL OPERATION

OPERATION

B-64124EN/01

3.5

Whether the distance the tool is moved by manual operation is added to

the coordinates can be selected by turning the manual absolute switch on

MANUAL ABSOLUTE

or off on the machine operator’s panel. When the switch is turned on, the

ON AND OFF

distance the tool is moved by manual operation is added to the

coordinates. When the switch is turned off, the distance the tool is moved

by manual operation is not added to the coordinates.

Y axis

P2

Manual operation

P1

X axis

O

The coordinates values change by the amount of manual operation.

Fig. 3.5 (a) Coordinates with the switch ON

Y2

Y1

P2

O2

P1

X2

X1

O1

The coordinates do not change.

Fig. 3.5 (b) Coordinates with the switch OFF

472

B-64124EN/01

OPERATION

3. MANUAL OPERATION

Explanation

The following describes the relation between manual operation and

coordinates when the manual absolute switch is turned on or off, using a

program example.

G01G90

X100.0Y100.0F010

;

X200.0Y150.0

;

X300.0Y200.0

;

The subsequent figures use the following notation:

Movement of the tool when the switch is on

Movement of the tool when the switch is off

The coordinates after manual operation include the distance the tool is

moved by the manual operation. When the switch is off, therefore, subtract

the distance the tool is moved by the manual operation.

D Manual operation after

Coordinates when block

has been executed after manual operation

the end of block

(X-axis +20.0, Y-axis +100.0) at the end of movement of block

Y

(220.0 , 250.0)

(120.0 , 200.0)

Manual

(200.0 , 150.0)

Switch ON

operation

Switch OFF

(100.0 , 100.0)

X

D Manual operation after a

Coordinates when the feed hold button is pressed while block

is being

feed hold

executed, manual operation (Y-axis + 75.0) is performed, and the cycle

start button is pressed and released.

Y

(300.0 , 275.0)

(200.0 , 225.0)

(150.0 , 200.0)

Manual

operation

(200.0 , 150.0)

(300.0 , 200.0)

(150.0 , 125.0)

X

Switch ON

Switch OFF

473

3. MANUAL OPERATION

OPERATION

B-64124EN/01

D When reset after a

Coordinates when the feed hold button is pressed while block

is being

manual operation

executed, manual operation (Y-axis +75.0) is performed, the control unit

following a feed hold

is reset with the RESET button, and block

is read again

Y

(300.0 , 275.0)

(200.0,225.0)

(150.0 , 200.0)

Manual

(300.0 , 200.0)

operation

(200.0,150.0)

(100.0 , 100.0)

(150.0 , 125.0)

Switch ON

X

Switch OFF

D When a movement

When there is only one axis in the following command, only the

command in the next

commanded axis returns.

block is only one axis

N1G01X100.0Y100.0F500;

Y

N2X200.0;

(200.0 , 150.0)

N3Y150.0;

Manual

operation

N3

Switch ON

N2

(200.0 , 100.0)

Switch OFF

N1

(100.0 , 100.0)

X

D When the next move

When the following commands are incremental commands, operation is

block is an incremental

the same as when the switch is OFF.

D Manual operation during

cutter compensation

When the switch is OFF

After manual operation is performed with the switch OFF during cutter

compensation, automatic operation is restarted then the tool moves

parallel to the movement that would have been performed if manual

movement had not been performed. The amount of separation equals to

the amount that was performed manually.

Cutter path after

manualoperation

Manual

operation

Cutter path

Programmed path

474

B-64124EN/01

OPERATION

3. MANUAL OPERATION

When the switch is ON during cutter compensation

Operation of the machine upon return to automatic operation after manual

intervention with the switch is ON during execution with an absolute

command program in the cutter compensation mode will be described.

The vector created from the remaining part of the current block and the

beginning of the next block is shifted in parallel. A new vector is created

based on the next block, the block following the next block and the

amount of manual movement. This also applies when manual operation

is performed during cornering.

Manual operation performed in other than cornering

Assume that the feed hold was applied at point P_H while moving from P_A

to P_B of programmed path P_A, P_B, and P_C and that the tool was manually

moved to P_H’. The block end point P_B moves to the point P_B’ by the

amount of manual movement, and vectors V_B1 and V_B2 at P_B also move

to V_B1’ and V_B2’. Vectors V_C1 and V_C2 between the next two blocks P_B

- P_C and P_C - P_D are discarded and new vectors V_C1’ and V_C2’ (V_C2’ =

V_C2 in this example) are produced from the relation between P_B’ - P_C and

P_C - P_D. However, since V_B2’ is not a newly calculated vector, correct

offset is not performed at block P_B’ - P_C. Offset is correctly performed

after P_C.

V_C1’

V_B2

V_C1

V_B1

P_B

P_C

V_C2

V_B2’

P_D

Programmed path

V_B1’

(absolute command)

PA

Cutter path after

P’

B

P

H

manual operation

Cutter path before

manual operation

Manual operation

P_H’

475

3. MANUAL OPERATION

OPERATION

B-64124EN/01

Manual operation during cornering

This is an example when manual operation is performed during cornering.

VA2’, VB1’, and VB2’ are vectors moved in parallel with VA2, VB1 and VB2

by the amount of manual movement. The new vectors are calculated

from V_C1 and V_C2. Then correct cutter compensation is performed for the

blocks following Pc.

V_C1’

V_B2

V_C1

V_B1

P_B

P_C

V_C2

V_B2’

V_B1’

Programmed path

(absolute command)

Cutter path after

PA

manual operation

Cutter path before

manual operation

VA2

VA1

P_H

PA’

Manual operation

VA2’

V

A1’

P_H’

Manual operation after single block stop

Manual operation was performed when execution of a block was

terminated by single block stop.

Vectors V_B1 and V_B2 are shifted by the amount of manual operation.

Sub-sequent processing is the same as case a described above. An MDI

operation can also be interveneted as well as manual operation. The

movement is the same as that by manual operation.

Cutter path after

V_C1’

manual operation

V_B2

V_C1

V_B1

P_B

P_C

V_C2

Manual

operation

V_B2’

Programmed path

V_B1’

P_B’

(absolute command)

P^A Cutter path before

manual operation

476

4. AUTOMATIC OPERATION

OPERATION

B-64124EN/01

Programs are registered in memory in advance. When one of these

4.1

programs is selected and the cycle start switch on the machine operator’s

MEMORY

panel is pressed, automatic operation starts, and the cycle start LED goes

OPERATION

on.

When the feed hold switch on the machine operator’s panel is pressed

during automatic operation, automatic operation is stopped temporarily.

When the cycle start switch is pressed again, automatic operation is

restarted.

When the

RESET

key on the MDI panel is pressed, automatic operation

terminates and the reset state is entered.

The following procedure is given as an example. For actual operation,

refer to the manual supplied by the machine tool builder.

Procedure for Memory Operation

Procedure

1

Press the MEMORY mode selection switch.

2

Select a program from the registered programs. To do this, follow the

steps below.

2-1 Press

PROG

to display the program screen.

2-2 Press address

O

2-3 Enter a program number using the numeric keys.

2-4 Press the [O SRH] soft key.

3

Press the cycle start switch on the machine operator’s panel.

Automatic operation starts, and the cycle start LED goes on. When

automatic operation terminates, the cycle start LED goes off.

4

To stop or cancel memory operation midway through, follow the

steps below.

a. Stopping memory operation

Press the feed hold switch on the machine operator’s panel. The

feed hold LED goes on and the cycle start LED goes off. The

machine responds as follows:

(i) When the machine was moving, feed operation decelerates

and stops.

(ii) When dwell was being performed, dwell is stopped.

(iii) When M, S, or T was being executed, the operation is stopped

after M, S, or T is finished.

When the cycle start switch on the machine operator’s panel is

pressed while the feed hold LED is on, machine operation restarts.

478

B-64124EN/01

OPERATION

4. AUTOMATIC OPERATION

In the MDI mode, a program consisting of up to 10 lines can be created

4.2

in the same format as normal programs and executed from the MDI panel.

MDI OPERATION

MDI operation is used for simple test operations.

The following procedure is given as an example. For actual operation,

refer to the manual supplied by the machine tool builder.

Procedure for MDI Operation

Procedure

1

Press the MDI mode selection switch.

2

Press the

PROG

function key on the MDI panel to select the program

screen. The following screen appears:

PROGRAM ( MDI )

0010

00002

O0000;

G00

G90

G94

G40

G80

G50

G54

G69

G17

G22

G21

G49

G98

G67

G64

G15

B HM

T

D

F

S

>_

MDI

* * * *

* * *

* * *

20 : 40 : 05

PRGRM

MDI

CURRNT

NEXT

(OPRT)

Program number O0000 is entered automatically.

3

Prepare a program to be executed by an operation similar to normal

program editing. M99 specified in the last block can return control to

the beginning of the program after operation ends. Word insertion,

modification, deletion, word search, address search, and program

search are available for programs created in the MDI mode. For

program editing, see III-9.

4

To entirely erase a program created in MDI mode,use one of the

following methods:

a. Enter address

O

, then press the

DELETE

key on the MDI panel.

b. Alternatively, press the

RESET

key. In this case, set bit 7 of

parameter MCL No. 3203 to 1 in advance.

481

4. AUTOMATIC OPERATION

OPERATION

B-64124EN/01

5

To execute a program, set the cursor on the head of the program. (Start

from an intermediate point is possible.) Push Cycle Start button on

the operator’s panel. By this action, the prepared program will start.

When the program end (M02, M30) or ER(%) is executed, the

prepared program will be automatically erased and the operation will

end.

By command of M99, control returns to the head of the prepared

program.

PROGRAM ( MDI )

O0001 N00003

O0000

G00 X100.0 Y200. ;

M03 ;

G01 Z120.0 F500 ;

M93 P9010 ;

G00 Z0.0 ;

%

G00

G90

G94

G40

G80

G50

G54

G69

G17

G22

G21

G49

G98

G67

G64

G15

B HM

T

D

F

S

>_

MDI

* * * *

* * *

* * *

12 : 42 : 39

PRGRM

MDI

CURRNT

NEXT

(OPRT)

6

To stop or terminate MDI operation in midway through, follow the

steps below.

a. Stopping MDI operation

Press the feed hold switch on the machine operator’s panel. The

feed hold LED goes on and the cycle start LED goes off. The

machine responds as follows:

(i) When the machine was moving, feed operation decelerates

and stops.

(ii) When dwell was being performed, dwell is stopped.

(iii) When M, S, or T was being executed, the operation is stopped

after M, S, or T is finished.

When the cycle start switch on the machine operator’s panel is

pressed, machine operation restarts.

b. Terminating MDI operation

Press the

RESET

key on the MDI panel.

Automatic operation is terminated and the reset state is entered.

When a reset is applied during movement, movement decelerates

then stops.

482

B-64124EN/01

OPERATION

4. AUTOMATIC OPERATION

Explanation

The previous explanation of how to execute and stop memory operation

also applies to MDI operation, except that in MDI operation, M30 does

not return control to the beginning of the program (M99 performs this

function).

D Erasing the program

Programs prepared in the MDI mode will be erased in the following cases:

S In MDI operation, if M02, M30 or ER(%) is executed.

(If bit 6 (MER) of parameter No. 3203 is set to 1, however, the

program is erased when execution of the last block of the program

is completed by single-block operation.)

S In MEMORY mode, if memory operation is performed.

S In EDIT mode, if any editing is performed.

S Background editing is performed.

S When the

O

and

DELETE

keys were pressed.

S Upon reset when bit 7 (MCL) of parameter No. 3203 is set to 1

D Restart

After the editing operation during the stop of MDI operation was done,

operation starts from the current cursor position.

D Editing a program during

A program can be edited during MDI operation. The editing of a program,

MDI operation

however, is disabled until the CNC is reset, when bit 5 (MIE) of parameter

No. 3203 is set accordingly.

Limitations

D Program registration

Programs created in MDI mode cannot be registered.

D Number of lines in a

A program can have as many lines as can fit on one page of the screen.

program

A program consisting of up to six lines can be created. When parameter

MDL (No. 3107 #7) is set to 0 to specify a mode that suppresses the

display of continuous-state information, a program of up to 10 lines can

be created.

If the created program exceeds the specified number of lines, % (ER) is

deleted (prevents insertion and modification).

D Subprogram nesting

Calls to subprograms (M98) can be specified in a program created in the

MDI mode. This means that a program registered in memory can be

called and executed during MDI operation. In addition to the main

program executed by automatic operation, up to four levels of

subprogram nesting are allowed.

Main program

Subprogram

Subprogram

O0000;

O1000;

O2000;

M98P 1000;

M98P 2000;

M98P 3000;

M30;

M99;

M99;

One-level nesting

Two-level nesting

Fig. 4.2 Nesting level of subprograms called from the MDI program

483

B-64124EN/01

OPERATION

4. AUTOMATIC OPERATION

4.3

By activating automatic operation during the DNC operation mode

(RMT), it is possible to perform machining (DNC operation) while a

DNC OPERATION

program is being read in via reader/puncher interface, or remote buffer.

It is possible to select files (programs) saved in an external input/output

unit of a floppy format (such as Handy File) and specify (schedule) the

sequence and frequency of execution for automatic operation. (see

III-4.5)

To use the DNC operation function, it is necessary to set the parameters

related to the reader/punch interface, and remote buffer in advance.

DNC OPERATION

Procedure

1

Search for the program (file) to be executed.

2

Press the REMOTE switch on the machine operator’s panel to set

RMT mode, then press the cycle start switch. The selected file is

executed. For details of the use of the REMOTE switch, refer to the

relevant manual supplied by the machine tool builder.

D Program check screen

PROGRAM CHECK

O0001 N00020

O0010 ;

G92 G90 X100 Y200 Z50 ;

G00 X0 Y0 Z0 ;

G01 Z250 F1000

(RELATIVE)

(DIST TO GO) G00

G94

G80

X

100.000

X

0.000

G17

G21

G98

Y

100.000

Y

0.000

G90

G49

G80

Z

0.000 Z

0.000

G22

G49

G67

A

0.000 A

0.000

B

C

0.000 C

0.000 H

M

HD.T

NX.T

D M

F

S

M

ACT.F

SACT

REPEAT

RMT STRT MTN *** ***

21:20:05

[ ABS

]

[ REL

]

[

]

[

]

[

(OPRT) ]

D Program screen

PROGRAM

O0001 N00020

N020 X100.0 Z100.0 (DNC-PROG) ;

N030

X200.0

Z200.0 ;

N040

X300.0

Z300.0 ;

N050

X400.0

Z400.0 ;

N060

X500.0

Z500.0 ;

N070

X600.0

Z600.0 ;

N080

X700.0

Z400.0 ;

N090

X800.0

Z400.0 ;

N100

x900.0

z400.0 ;

N110

x1000.0

z1000.0 ;

N120

x800.0

z800.0 ;

RMT STRT MTN *** ***

21:20:05

[

PRGRM ] [ CHECK ] [

]

[

]

[

(OPRT) ]

485

4. AUTOMATIC OPERATION

OPERATION

B-64124EN/01

During DNC operation, the program currently being executed is

displayed on the program check screen and program screen.

The number of displayed program blocks depends on the program being

executed.

Any comment enclosed between a control-out mark “(” and control-in

mark “)” within a block is also displayed.

Explanations

D During DNC operation, programs stored in memory can be called.

D During DNC operation, macro programs stored in memory can be

called.

Limitations

D Limit on number of

In program display, no more than 256 characters can be displayed.

characters

Accordingly, character display may be truncated in the middle of a block.

D M198 (command for

In DNC operation, M198 cannot be executed. If M198 is executed, P/S

calling a program from

alarm No. 210 is issued.

within an external

input/output unit)

D Custom macro

In DNC operation, custom macros can be specified, but no repeat

instruction and branch instruction can be programmed. If a repeat

instruction or branch instruction is executed, P/S alarm No. 123 is issued.

When reserved words (such as IF, WHILE, COS, and NE) used with

custom macros in DNC operation are displayed during program display,

a blank is inserted between adjacent characters.

Example

[During DNC operation]

#102=SIN[#100] ;

→

#102 = S I N[#100] ;

IF[#100NE0]GOTO5 ;

→

I F[#100NE0] G O T O 5 ;

D M99

When control is returned from a subprogram or macro program to the

calling program during DNC operation, it becomes impossible to use a

return command (M99P****) for which a sequence number is specified.

Alarm

Number

Message

Contents

086

DR SIGNAL OFF

When entering data in the memory by

using Reader / Puncher interface, the

ready signal (DR) of reader / puncher

was turned off.

Power supply of I/O unit is off or cable is

not connected or a P.C.B. is defective.

123

CAN NOT USE MACRO

Macro control command is used during

COMMAND IN DNC

DNC operation.

Modify the program.

210

CAN NOT COMAND

Or M198 is executed in the DNC opera-

M198/M199

tion. Modify the program.

486

B-64124EN/01

OPERATION

4. AUTOMATIC OPERATION

This function specifies Sequence No. of a block to be restarted when a tool

4.4

is broken down or when it is desired to restart machining operation after

PROGRAM

a day off, and restarts the machining operation from that block. It can also

RESTART

be used as a high-speed program check function.

There are two restart methods: the P-type method and Q-type method.

Operation can be restarted anywhere. This restart method is

P TYPE

used when operation is stopped because of a broken tool.

Program start point (machining start point)

ÇÇ

ÇÇ

Return operation

Restart position

Before operation can be restarted, the machine must be moved

Q TYPE

to the programmed start point (machining start point)

ÇÇ

ÇÇ

Return operation

ÇÇ

Program start point

(machining start point)

Restart position

487

4. AUTOMATIC OPERATION

OPERATION

B-64124EN/01

Procedure for Program Restart by Specifying a Sequence Number

Procedure 1

[ P TYPE ]

1

Retract the tool and replace it with a new one. When necessary,

change the offset.

(Go to step 2.)

[ Q TYPE ]

1

When power is turned ON or emergency stop is released, perform all

necessary operations at that time, including the reference position

return.

2

Move the machine manually to the program starting point (machining

start point), and keep the modal data and coordinate system in the

same conditions as at the machining start.

3

If necessary, modify the offset amount.

Procedure 2

[COMMON TO P TYPE /

1

Turn the program restart switch on the machine operator’s panel ON.

Q TYPE]

2

Press

PROG

key to display the desired program.

3

Find the program head.

[Q TYPE]

4

Enter the sequence number of the block to be restarted, then press th

N

fff

fffff

[P TYPE] or [Q TYPE] soft key.

or

[P TYPE]

Frequency

Sequence number

[Q TYPE]

If the same sequence number appears more than once, the location of

N

fffff

or

the target block must be specified. Specify a frequency and a

sequence number.

[P TYPE]

Sequence number

488

B-64124EN/01

OPERATION

4. AUTOMATIC OPERATION

5

The sequence number is searched for, and the program restart screen

appears on the CRT display.

PROGRAM RESTART

O0002 N01000

DESTINATION

M

1

2

X 57. 096

1

2

Y 56. 877

1

2

Z 56. 943

1

2

1

2

1 * * * * * * * *

* * * * * * * ** * * * * * * *

DISTANCE TO GO

1 X 1. 459

T * * * * * * * ** * * * * * * *

2 Y 10. 309

S * * * * *

3 Z 7. 320

S

0 T0000

MEM * * * *

* * *

* * *

10 : 10 : 40

RSTR

DIR

(OPRT)

DESTINATION shows the position at which machining is to restart.

DISTANCE TO GO shows the distance from the current tool position

to the position where machining is to restart. A number to the left of

each axis name indicates the order of axes (determined by parameter

setting) along which the tool moves to the restart position.

The coordinates and amount of travel for restarting the program can

be displayed for up to five axes. If your system supports six or more

axes, pressing the [RSTR] soft key again displays the data for the

sixth and subsequent axes. (The program restart screen displays only

the data for CNC-controlled axes.)

M: Fourteen most recently specified M codes

T: Two most recently specified T codes

S: Most recently specified S code

B: Most recently specified B code

Codes are displayed in the order in which they are specified. All

codes are cleared by a program restart command or cycle start in the

reset state.

6

Turn the program re-start switch OFF. At this time, the figure at the

left side of axis name DISTANCE TO GO blinks.

7

Check the screen for the M, S, T, and B codes to be executed. If they

are found, enter the MDI mode, then execute the M, S, T, and B

functions. After execution, restore the previous mode.

These codes are not displayed on the program restart screen.

8

Check that the distance indicated under DISTANCE TO GO is correct.

Also check whether there is the possibility that the tool might hit a

workpiece or other objects when it moves to the machining restart

position. If such a possibility exists, move the tool manually to a

position from which the tool can move to the machining restart

position without encountering any obstacles.

9

Press the cycle start button. The tool moves to the machining restart

position at the dry run feedrate sequentially along axes in the order

specified by parameter settings (No. 7310). Machining is then

restarted.

489

4. AUTOMATIC OPERATION

OPERATION

B-64124EN/01

Procedure for Program Restart by Specifying a Block Number

Procedure 1

[ P TYPE ]

1

Retract the tool and replace it with a new one. When necessary,

change the offset.

(Go to step 2.)

[ Q TYPE ]

1

When power is turned ON or emergency stop is released, perform all

necessary operations at that time, including the reference position

return.

2

Move the machine manually to the program starting point (machining

start point), and keep the modal data and coordinate system in the

same conditions as at the machining start.

3

If necessary, modify the offset amount.

Procedure 2

[COMMON TO P TYPE /

1

Turn the program restart switch on the machine operator’s panel ON.

Q TYPE]

2

Press

PROG

key to display the desired program.

3

Find the program head. Press function

RESET

key.

[Q TYPE]

4

Enter the number of the block to be restarted then press the [P TYPE]

or [Q TYPE] soft key. The block number cannot exceed eight digits.

B

f f f f f f f f

or

[P TYPE]

5

The block number is searched for, and the program restart screen

appears on the display.

Block number

PROGRAM RESTART

O0002 N01000

DESTINATION

M

1

2

X 57. 096

1

2

Y 56. 877

1

2

Z 56. 943

1

2

1

2

1 * * * * * * * *

DISTANCE TO GO

* * * * * * * ** * * * * * * *

X 1. 459

T * * * * * * * ** * * * * * * *

Y 10. 309

Z 7. 320

S * * * * *

S

0 T0000

MEM * * * *

* * *

* * *

10 : 10 : 40

RSTR

DIR

FL.SDL

(OPRT)

DESTINATION shows the position at which machining is to restart.

DISTANCE TO GO shows the distance from the current tool position

to the position where machining is to restart. A number to the left of

each axis name indicates the order of axes (determined by parameter

setting) along which the tool moves to the restart position.

490

B-64124EN/01

OPERATION

4. AUTOMATIC OPERATION

The coordinates and amount of travel for restarting the program can

be displayed for up to five axes. If your system supports six or more

axes, pressing the [RSTR] soft key again displays the data for the

sixth and subsequent axes. (The program restart screen displays only

the data for CNC-controlled axes.)

M: Fourteen most recently specified M codes

T: Two most recently specified T codes

S: Most recently specified S code

B: Most recently specified B code

Codes are displayed in the order in which they are specified. All

codes are cleared by a program restart command or cycle start in the

reset state.

6

Turn the program re-start switch OFF. At this time, the figure at the

left side of axis name DISTANCE TO GO blinks.

7

Check the screen for the M, S, T, and B codes to be executed. If they

are found, enter the MDI mode, then execute the M, S, T, and B

functions. After execution, restore the previous mode.

These codes are not displayed on the program restart screen.

8

Check that the distance indicated under DISTANCE TO GO is correct.

Also check whether there is the possibility that the tool might hit a

workpiece or other objects when it moves to the machining restart

position. If such a possibility exists, move the tool manually to a

position from which the tool can move to the machining restart

position without encountering any obstacles.

9

Press the cycle start button. The tool moves to the machining restart

position at the dry run feedrate sequentially along axes in the order

specified by parameter settings (No. 7310). Machining is then

restarted.

Explanations

D Block number

When the CNC is stopped, the number of executed blocks is displayed on

the program screen or program restart screen. The operator can specify

the number of the block from which the program is to be restarted, by

referencing the number displayed on the CRT. The displayed number

indicates the number of the block that was executed most recently. For

example, to restart the program from the block at which execution

stopped, specify the displayed number, plus one.

The number of blocks is counted from the start of machining, assuming

one NC line of a CNC program to be one block.

< Example 1 >

CNC Program

Number of blocks

O 0001 ;

1

G90 G92 X0 Y0 Z0 ;

2

G01 X100. F100 ;

3

G03 X01 -50. F50 ;

4

M30 ;

5

491

4. AUTOMATIC OPERATION

OPERATION

B-64124EN/01

< Example 2 >

CNC Program

Number of blocks

O 0001 ;

1

G90 G92 X0 Y0 Z0 ;

2

G90 G00 Z100. ;

3

G81 X100. Y0. Z-120. R-80. F50. ;

4

#1 = #1 + 1 ;

4

#2 = #2 + 1 ;

4

#3 = #3 + 1 ;

4

G00 X0 Z0 ;

5

M30 ;

6

Macro statements are not counted as blocks.

D Storing / clearing the

The block number is held in memory while no power is supplied. The

block number

number can be cleared by cycle start in the reset state.

D Block number when a

The program screen usually displays the number of the block currently

program is halted or

being executed. When the execution of a block is completed, the CNC

stopped

is reset, or the program is executed in single-block stop mode, the

program screen displays the number of the program that was executed

most recently.

When a CNC program is halted or stopped by feed hold, reset, or

single-block stop, the following block numbers are displayed:

Feed hold : Block being executed

Reset : Block executed most recently

Single-block stop : Block executed most recently

For example, when the CNC is reset during the execution of block 10, the

displayed block number changes from 10 to 9.

D MDI intervention

When MDI intervention is performed while the program is stopped by

single-block stop, the CNC commands used for intervention are not

counted as a block.

D Block number exceeding

When the block number displayed on the program screen exceeds eight

eight digits

digits, the block number is reset to 0 and counting continues.

Limitations

D P-type restart

Under any of the following conditions, P-type restart cannot be

performed:

⋅

When automatic operation has not been performed since the power

was turned on

⋅

When automatic operation has not been performed since an

emergency stop was released

⋅

When automatic operation has not been performed since the

coordinate system was changed or shifted (change in an external

offset from the workpiece reference point)

D Restart block

The block to be restarted need not be the block which was interrupted;

operation can restart with any block. When P-type restart is performed,

the restart block must use the same coordinate system as when operation

was interrupted.

492

Content      ..     15      16      17      18     ..