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

Manual traversing

15.6 Manual traversing using a handwheel

15.6

Manual traversing using a handwheel

15.6.1

Function

The electronic handwheels (accessories) can be used to simultaneously traverse selected axes

manually. The weighting of the handwheel graduations is dependent on the increment-size

weighting. Where coordinate offset or rotation is selected, manual travel can even be performed

in the transformed workpiece coordinate system.

Commissioning

For information on the commissioning of electronic handwheels, see Chapter "Start-up:

Handwheels (Page 778)".

Selection

JOG mode must be active. The user must also set the increment INC1, INC10, etc., which applies

to manual traversing using a handwheel. As with incremental travel, the required machine

function must be set at the PLC interface accordingly.

Traversing

When the electronic handwheel is turned, the associated axis is traversed either in the positive

or negative direction depending on the direction of rotation.

Note

If the axis is already being moved using the traversing keys, then manual traversing using the

handwheel is not possible.

Traversing distance

The traversing distance produced by rotating the handwheel is dependent on the following

factors:

• Number of handwheel pulses received at the interface

• Active increment (machine function INC1, INC10, INC100, ... INCvar)

• Pulse evaluation of the handwheel:

MD11320 $MN_HANDWH_IMP_PER_LATCH (handwheel pulses per detent position)

See Chapter "Parameter assignment (Page 719)".

• Distance of an increment:

MD31090 $MA_JOG_INCR_WEIGHT (evaluation of an increment for INC/handwheel)

See Chapter "Parameter assignment (Page 719)".

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15.6 Manual traversing using a handwheel

Handwheel connection

Up to six handwheels can be connected simultaneously. This means that up to six axes can be

traversed by handwheel simultaneously.

Representation of the handwheel number in the NC/PLC interface signals

Depending on the parameter assignment of MD11324, the representation of the handwheel

number in the NC/PLC interface signals is bit-coded (three handwheels can be represented)

or binary-coded (six handwheels can be represented). From the HMI, the handwheel number

is always transferred bit-coded, independent of the setting in MD11324.

See Chapter "Parameter assignment (Page 719)".

Handwheel assignment

The axis that is moved by turning the handwheel can be set via the via the PLC user interface or

via the user interface (HMI). The assignment is linked to the NC/PLC interface through the PLC

user program. In this way, several axes can be assigned to one handwheel simultaneously.

Setting via the PLC user interface

The assignment is made using one of the following interface signals:

• Machine axes:

- DB31, ... DBX4.0 - 2 (activate handwheel)

• Geometry axes:

- DB21, ... DBX12.0 - 2 (geometry axis 1: Activate handwheel)

- DB21, ... DBX16.0 - 2 (geometry axis 2: Activate handwheel)

- DB21, ... DBX20.0 - 2 (geometry axis 3: Activate handwheel)

• Orientation axes:

- DB21, ... DBX320.0 - 2 (orientation axis 1: Activate handwheel)

- DB21, ... DBX324.0 - 2 (orientation axis 2: Activate handwheel)

- DB21, ... DBX328.0 - 2 (orientation axis 3: Activate handwheel)

Setting via the user interface (HMI)

Pressing the "Handwheel" softkey in the JOG-mode basic menu displays the "Handwheel"

window. Here, every handwheel can be assigned an axis and the handwheel can be enabled or

disabled.

Note

The handwheel assignment is not possible via the user interface (HMI) for more than three

connected handwheels and a binary-coded representation of the handwheel number in the NC/

PLC interface signals.

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15.6 Manual traversing using a handwheel

Handwheel selection by HMI

A separate user interface is provided between the HMI and PLC to allow activation of the

handwheel from the user interface. This interface supplied by the basic PLC program for

handwheels 1, 2 and 3 contains the following information:

• Axis number assigned to the handwheel (if, during the handwheel selection, a machine axis

was selected):

DB10 DBX100.0 - 4 (axis number handwheel 1)

DB10 DBX101.0 - 4 (axis number handwheel 2)

DB10 DBX102.0 - 4 (axis number handwheel 3)

• Channel number assigned to the handwheel (if during the handwheel selection a geometry

axis was selected):

DB10 DBX97.0 - 3 (channel number geometry axis handwheel 1)

DB10 DBX98.0 - 3 (channel number geometry axis handwheel 2)

DB10 DBX99.0 - 3 (channel number geometry axis handwheel 3)

• Additional information on the machine or geometry axis:

DB10 DBX100.7 (machine axis handwheel 1)

DB10 DBX101.7 (machine axis handwheel 2)

DB10 DBX102.7 (machine axis handwheel 3)

• The information that the handwheel is enabled or disabled:

DB10 DBX100.6 (handwheel 1 selected)

DB10 DBX101.6 (handwheel 2 selected)

DB10 DBX102.6 (handwheel 3 selected)

Selection of JOG axis via HMI

When a handwheel is used on a touch control unit, such as the HT 10 for example, the user has

the option of selecting machine or geometry axes for manual traversing directly via the operator

interface.

Further information: PLC Function Manual

The basic PLC program is notified via the following interface signal of whether and which

handwheel is selected for use of the HT 10 via the operator interface:

DB10 DBX246.0 - 5 (handwheel active)

Bit

Value

Meaning

= 1

Handwheel 1 active

= 1

Handwheel 2 active

= 1

Handwheel 3 active

= 1

Handwheel 4 active

= 1

Handwheel 5 active

= 1

Handwheel 6 active

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15.6 Manual traversing using a handwheel

Enable

For the specified axis, the basic PLC program sets the associated interface signal either to "0"

(disable) or to "1" (enable):

• Machine axes:

- DB31, ... DBX4.0 - 2 (activate handwheel)

• Geometry axes:

- DB21, ... DBX12.0 - 2 (geometry axis 1: Activate handwheel)

- DB21, ... DBX16.0 - 2 (geometry axis 2: Activate handwheel)

- DB21, ... DBX20.0 - 2 (geometry axis 3: Activate handwheel)

Note

Orientation axes can only be activated via the associated PLC user interface signals:

• DB21, ... DBX320.0 - 2 (orientation axis 1: Activate handwheel)

• DB21, ... DBX324.0 - 2 (orientation axis 2: Activate handwheel)

• DB21, ... DBX328.0 - 2 (orientation axis 3: Activate handwheel)

Travel request

The following NC/PLC interface signal informs the PLC that an axis wants to travel or is travelling:

• Machine axes:

- DB31, ... DBX64.4 (travel request "minus") or

- DB31, ... DBX64.5 (travel request "plus")

• Geometry axis 1:

- DB21, … DBX40.4 (geometry axis 1: Travel request "minus") or

- DB21, … DBX40.5 (geometry axis 1: Travel request "plus")

• Geometry axis 2:

- DB21, … DBX46.4 (geometry axis 2: Travel request "minus") or

- DB21, … DBX46.5 (geometry axis 2: Travel request "plus")

• Geometry axis 3:

- DB21, … DBX52.4 (geometry axis 3: Travel request "minus") or

- DB21, … DBX52.5 (geometry axis 3: Travel request "plus")

• Orientation axis 1:

- DB21, … DBX332.4 (orientation axis 1: Travel request "minus") or

- DB21, … DBX332.5 (orientation axis 1: Travel request "plus")

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15.6 Manual traversing using a handwheel

• Orientation axis 2:

- DB21, … DBX336.4 (orientation axis 2: Travel request "minus") or

- DB21, … DBX336.5 (orientation axis 2: Travel request "plus")

• Orientation axis 3:

- DB21, … DBX340.4 (orientation axis 3: Travel request "minus") or

- DB21, … DBX340.5 (orientation axis 3: Travel request "plus")

Note

A travel request is the sum of all sub-movements, i.e. the component from couplings and

correction values is also taken into account.

For the method of operation of the "Travel request" function, see Section "Travel request

(Page 724)".

Travel command

Depending on the setting in machine data MD17900 $MN_VDI_FUNCTION_MASK (see Section

"Parameter assignment (Page 719)"), the following interface signal is output to the PC already

when a travel request is present or not until the axis moves:

• Machine axes:

- DB31, ... DBX64.6 (travel command "minus") or

- DB31, ... DBX64.7 (travel command "plus")

• Geometry axis 1:

- DB21, … DBX40.6 (geometry axis 1: Travel command "minus") or

- DB21, … DBX40.7 (geometry axis 1: Travel command "plus")

• Geometry axis 2:

- DB21, … DBX46.6 (geometry axis 2: Travel command "minus") or

- DB21, … DBX46.7 (geometry axis 2: Travel command "plus")

• Geometry axis 3:

- DB21, … DBX52.6 (geometry axis 3: Travel command "minus") or

- DB21, … DBX52.7 (geometry axis 3: Travel command "plus")

• Orientation axis 1:

- DB21, … DBX332.6 (orientation axis 1: Travel command "minus") or

- DB21, … DBX332.7 (orientation axis 1: Travel command "plus")

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15.6 Manual traversing using a handwheel

• Orientation axis 2:

- DB21, … DBX336.6 (orientation axis 2: Travel command "minus") or

- DB21, … DBX336.7 (orientation axis 2: Travel command "plus")

• Orientation axis 3:

- DB21, … DBX340.6 (orientation axis 3: Travel command "minus") or

- DB21, … DBX340.7 (orientation axis 3: Travel command "plus")

Note

A travel command set in JOG mode is canceled if the controller enable or pulse enable for the axis

to be traversed is missing. The travel command must therefore be set again after release of the

axis.

Invert handwheel direction of rotation

The handwheel direction of rotation can be inverted, if the direction of movement of the

handwheel does not match the expected direction of motion of the axis. Adaptation may be

necessary in particular wherever a handwheel can be assigned to various axes.

In addition to configuring the particular MD, handwheel direction of rotation inversion can be

activated by setting the IS "Invert the handwheel direction of rotation" belonging to the

particular axis:

• Machine axes:

- DB31, ... DBX7.0 (invert handwheel direction of rotation)

• Geometry axes:

- DB21, ... DBX15.0 (geometry axis 1: Invert handwheel direction of rotation)

- DB21, ... DBX19.0 (geometry axis 2: Invert handwheel direction of rotation)

- DB21, ... DBX23.0 (geometry axis 3: Invert handwheel direction of rotation)

• Orientation axes:

- DB21, … DBX323.0 (orientation axis 1: Invert handwheel direction of rotation)

- DB21, … DBX327.0 (orientation axis 2: Invert handwheel direction of rotation)

- DB21, … DBX331.0 (orientation axis 3: Invert handwheel direction of rotation)

• Contour handwheel:

- DB21, ... DBX31.5 (contour handwheel: Invert handwheel direction of rotation)

Note

The inversion signal should be set in the PLC user program at the same time as the handwheel

selection (IS "Activate handwheel").

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15.6 Manual traversing using a handwheel

The acknowledgement that the handwheel direction of rotation has been inverted by the NC is

realized for each axis using the IS "Handwheel direction of rotation inversion active":

• Machine axes:

- DB31, ... DBX67.0 (handwheel direction of rotation inversion active)

• Geometry axes:

- DB21, ... DBX43.0 (geometry axis 1: Handwheel direction of rotation inversion active)

- DB21, ... DBX49.0 (geometry axis 2: Handwheel direction of rotation inversion active)

- DB21, ... DBX55.0 (geometry axis 3: Handwheel direction of rotation inversion active)

• Orientation axes:

- DB21, ... DBX335.0 (orientation axis 1: Handwheel direction of rotation inversion active)

- DB21, ... DBX339.0 (orientation axis 2: Handwheel direction of rotation inversion active)

- DB21, ... DBX343.0 (orientation axis 3: Handwheel direction of rotation inversion active)

• Contour handwheel:

- DB21, ... DBX39.5 (contour handwheel: Handwheel direction of rotation inversion

active)

Note

It is only permissible to change the inversion signal at standstill. If the change is made while

motion setpoints are being output by the interpolator, then the signal change is rejected and an

alarm is output; further, motion is stopped taking into account the actual acceleration value.

Abort/interruption of the traversing motion

The following NC/PLC interface signals abort the traversing motion. The setpoint/actual-value

difference is deleted.

NC/PLC interface signal

Scope

Effect

DB21, ... DBX7.7 (NC reset)

Geometry axis / machine axis

Abort

DB21, ... DBX12.0 - 2 (geometry axis 1: Activate hand-

Geometry axis

1 → 0

Abort

wheel)

DB21, ... DBX16.0 - 2 (geometry axis 2: Activate hand-

wheel)

DB21, ... DBX20.0 - 2 (geometry axis 3: Activate hand-

wheel)

DB21, ... DBX6.2 (delete distance-to-go)

Geometry axis / machine axis

0 → 1

Abort

DB31, ... DBX2.2 (delete distance-to-go / spindle reset)

Geometry axis / machine axis

0 → 1

Abort

DB31, ... DBX4.2 (activate handwheel)

Machine axis

1 → 0

Abort

DB31, ... DBX1.3 (axis/spindle disable)

Geometry axis / machine axis

0 → 1

Abort

DB31, ... DBX1.5 (position measuring system 1)

Geometry axis / machine axis

0 → 1

Abort

DB31, ... DBX1.6 (position measuring system 2)

Geometry axis / machine axis

0 → 1

Abort

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15.6 Manual traversing using a handwheel

For other NC/PLC interface signals (hold signals), the influence of manually traversing using the

handwheel (cancellation or interruption of traversing motion) can be set (see Chapter

"Parameter assignment (Page 719)").

NC STOP only interrupts the traversing movement. Any setpoint/actual-value difference is

retained. The distance-to-go is then traversed using NC START.

See also

Parameter setting (Page 740)

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15.10 Position travel in JOG

15.10.2

Parameter setting

Consideration of axial frames and tool length compensation

The consideration of axial frames and, if an axis is configured as geometry axis, the tool length

compensation, depends on the setting of bit 1 in the machine data:

MD10735 $MN_JOG_MODE_MASK (settings for the JOG mode)

Bit

Value

Meaning

Axial frames and tool length compensation are not considered.

Axial frames and tool length compensation are considered.

Retraction in the opposite direction

The behavior when retracting from a position in the opposite direction depends on the setting

of bit 2 in the machine data:

MD10735 $MN_JOG_MODE_MASK (settings for the JOG mode)

Bit

Value

Meaning

Retraction in the opposite direction is not possible (default setting).

Retraction in the opposite direction is possible.

Position to be approached

The position to be approached is entered in the setting data:

SD43320 $SA_JOG_POSITION (JOG position)

15.10.3

Supplementary Conditions

Axis is indexing axis

The axis is not traversed and an alarm is output if the axis to be traversed is an indexing axis and

the position to be approached does not match an indexing position.

Frames active

All active frames are ignored. Traversing is performed in the machine coordinate system.

Correction values active

Active correction values (DRF, external zero offset, synchronized action offset $AA_OFF, online

tool offset) are also traversed.

An alarm is issued if an offset movement (DRF, external zero offset, synchronized action offset

$AA_OFF, online tool offset) is made during the approach of a variable position in JOG. The

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15.10 Position travel in JOG

position to be approached in the machine coordinate system is not reached; instead a position

that would have been reached without active offset movement is reached. The NC/PLC interface

signal DB31, ... DBX75.7 is not reported.

Working area limits

Working-area limitations (in BCS and WCS) are considered and the axis motion is stopped on

reaching the limits.

15.10.4

Application example

Objective

A rotary axis (machine axis 4 [AX4]) is to be moved to Position 100 degrees with the "Position

travel in JOG" function.

Parameter assignment

The position to be approached is specified via the user interface as follows:

SD43320 $SA_JOG_POSITION[AX4] = 100

; position to be approached for machine axis 4 =

100

Initial situation

Axis 4 [AX4] is referred and is at Position 0 degree.

Approaching the position

The control is switched to JOG mode and machine axis 4 is selected.

The function "Position travel in JOG" is activated:

DB34 DBX13.3 = 1

The NC confirms the activation as soon as the function is effective:

DB34 DBX75.6 = 1

Approaching the position is started via continuous traversing and the JOG traverse key Plus of

the machine control panel.

The axis traverses until it comes to an automatic standstill at the position 100 degrees.

When the position is reached with "Exact stop fine", the following NC/PLC interface signal is set:

DB34 DB75.7 = 1

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15.11 Circular travel in JOG

15.11

Circular travel in JOG

15.11.1

Function

With the "Circular travel in JOG" function, the machine operator can simultaneously traverse the

two geometry axes of the active plane along an arc using the traverse keys or handwheel.

Applications

This function is used for machine tools that are exclusively operated manually.

Preconditions

• The "Circular travel in JOG" function can be activated only in the JOG mode.

The function cannot be activated if the machine functions JOG-REPOS and JOG-REF are

active.

• The axes that participate in traversing must be homed.

• The active plane must not be inclined.

Procedure

Procedure for circular travel in JOG:

1. Plane selection

2. Selection of JOG mode

3. Specification of circle parameters

4. Activation of the function "Circular travel in JOG"

5. Traversing of the geometry axes with traverse keys or handwheel

Plane selection

The geometry axes of the active plane are selected by programming one of the following G

commands:

G command

1st geometry axis of the plane

2nd geometry axis of the plane

G17

G18

G19

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15.11 Circular travel in JOG

Specification of circle parameters

At least the following data is required for circular travel in JOG:

• Coordinates of the circle center point

• The maximum circle radius for internal machining or minimum circle radius for external

machining

• Machining mode (internal or external machining)

The specifications are made via the user interface in the channel-specific setting data:

SD42690 $SC_JOG_CIRCLE_CENTRE (circle center point)

SD42691 $SC_JOG_CIRCLE_RADIUS (circle radius)

SD42692 $SC_JOG_CIRCLE_MODE (jog circle mode)

For details, see Chapter "Parameter setting (Page 747)".

Activating the function

The PLC sets the interface signal after the "Circular travel in JOG" function has been selected:

DB21, ... DBX30.6 (JOG circular travel)

The NC confirms the activation with the interface signal as soon as the function is effective:

DB21, ... DBX377.6 (JOG circular travel active)

Note

Activation is not possible:

• during an NC reset

• In case of impending emergency stop

• During processing of an ASUP

• If at least one of the participating axes is already being traversed

• If PTP travel is active

• During active Cartesian manual traversing with generic transformation

No alarm message occurs. Delayed activation takes place after closure or after

acknowledgement of the active function.

Sequence

After activating the function, the tool can be traversed by means of a continuous or incremental

JOG motion using traverse keys or a handwheel:

• For a JOG movement request for the 1st geometry axis of the active plane, traversing is done

from the current position via a concentric arc with the same center point as for the defined

arc.

• For a JOG movement request for the 2nd geometry axis of the active plane, traversing is done

perpendicular to the defined arc. As a result, the circle radius changes.

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15.11 Circular travel in JOG

• Only one movement at a time can be carried out in the active plane: either on the arc or

perpendicular to it.

• Regardless of the movements in the active plane, the 3rd geometry axis can be traversed

perpendicular to the active plane.

Note

The radius can only be reduced to zero, i.e. to the center point of the circle. If the radius is then

enlarged again, traversing occurs back in the direction from where the reducing started.

Note

If the current position is the center point of the circle when the function is activated or after a

change to the center point of the circle, then the following applies:

• For a full circle, traversing takes place in the direction of the 2nd geometry axes.

• For a segment of a circle, travel is in the direction of the angle bisector.

Internal or external machining

Depending on the specification in the setting data SD42692 $SC_JOG_CIRCLE_MODE, internal

or external machining takes place:

• Internal machining

- Traversing is only possible within the defined circle.

- The circle radius in SD42691 $SA_CIRCLE_RADIUS is the maximum radius.

• External machining

- Traversing is only possible outside of the defined circle.

- The circle radius in SD42691 $SA_CIRCLE_RADIUS is the minimum radius.

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15.11 Circular travel in JOG

Figure 15-5

Circular travel in JOG: Internal/external machining

Circle segment machining

By specifying a start and end angle, the working area for the 1st and 2nd geometry axis can be

limited to a circle segment:

SD42693 $SC_JOG_CIRCLE_START_ANGLE (circle start angle)

SD42694 $SC_JOG_CIRCLE_END_ANGLE (circle end angle)

Furthermore, the direction from the start to the end angle must be specified to permit the unique

definition of the circle segment:

SD42692 $SC_JOG_CIRCLE_MODE, bit 0

This bit also specifies the traversing direction along the circular path.

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Figure 15-6

Circular travel in JOG: Circle segment machining

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15.11 Circular travel in JOG

Allowance for tool radius

If bit 1 is set in the setting data SD42692 $SC_JOG_CIRCLE_MODE, then the tool radius is

considered when monitoring the operating range limits (define circular arc; for circle segment

machining also the limits that arise due to the start and end angle):

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Figure 15-7

Circular travel in JOG: Circle segment internal machining with tool radius compensation

Note

By taking the tool radius into consideration, the smallest possible radius for the internal

machining in the vicinity of the center point of the circle is also limited.

Axis monitoring

If the current axis positions of the engaged axes are outside of the workspace limits when the

function is activated, then the axes are not traversed and an alarm is output.

Axis positions that are outside of the operating range limits are:

• For internal machining: positions outside of the defined circle

• For external machining: positions within the define circle

• For circle segment machining: Positions outside of the limits that result from the start and

end angles (segment borders)

• For active tool radius compensation: Positions too close to limiting circle

• For active tool radius compensation and internal machining: Positions too close to center of

circle

• For active tool radius compensation and circle segment machining: Positions too close to

segment borders

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15.11 Circular travel in JOG

Changes to the setting data

Changes in the function-relevant setting data SD42690 to SD42694 that are made during an

active JOG motion only take effect after ending the active JOG motion by triggering a new JOG

motion.

Note

To ensure that changes in the setting data take effect more quickly, the machine operator can

proceed as follows:

1. Cancel the current traverse movement with residual distance deletion.

2. Change setting data.

3. Restart the JOG motion.

Abort/deactivation

If during a JOG motion the function "Circular travel in JOG" is deactivated (DB21, ... DBX30.6 =

0), then the JOG motion is canceled and an alarm is output.

Note

To avoid the alarm message, the machine user should proceed as follows:

1. Cancel the current traverse movement with residual distance deletion.

2. Deactivating the function after axis standstill.

15.11.2

Parameter setting

Traversing direction of the second geometry axis

The traversing direction of the second geometry axis can be set via the following machine data:

MD10735 $MN_JOG_MODE_MASK (settings for the JOG mode)

Bit

Value

Meaning

Traversing of the 2nd geometry axis of the active plane to plus increases the radius,

traversing to minus decreases the radius. The traversing movement is independent of

whether internal or external machining is active.

Bit

Value

Meaning

Traversing of the 2nd geometry axis of the active plane to plus always takes place in the

direction of the limiting circle. I.e. the radius is increased for internal machining and

decreased for external machining.

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15.11 Circular travel in JOG

Bit

Value

Meaning

Traversing of the 2nd geometry axis of the active plane to minus always takes place in

the direction of the limiting circle. I.e. the radius is increased for internal machining and

decreased for external machining.

Coordinates of center of circle as radius value

In basic setting, the specified coordinate of an axis is always a diameter value when diameter

programming is active. This can be changed for specifying the center of circle coordinates for

circular traversing in JOG via the following machine data:

MD20360 $MC_TOOL_PARAMETER_DEF_MASK (definition of the tool parameters)

Bit

Value

Meaning

For circular travel in JOG, the center of circle coordinate is a diameter value (basic set-

ting).

For circular travel in JOG, the center of circle coordinate is always a radius value.

Center of circle

The center of the circle to be traversed is set in the setting data:

SD42690 $SC_JOG_CIRCLE_CENTRE (circle center point)

The coordinate data refers to the WCS. It can be a diameter or radius value (depending on the

setting in the MD20360 Bit 13).

Only the center point coordinates of the geometry axes of the active plane are evaluated, not the

coordinates of the geometry axis that is perpendicular to the plane.

Circle radius

The radius of the maximum circle for internal machining or of the minimum circle for external

machining is set in the setting data:

SD42691 $SC_JOG_CIRCLE_RADIUS (circle radius)

The radius that is specified refers to the WCS.

Internal or external machining

The machining mode (internal or external machining) is defined in the setting data:

SD42692 $SC_JOG_CIRCLE_MODE (jog circle mode)

Bit

Value

Meaning

Internal machining takes place.

The circle radius in SD42691 is the maximum possible radius.

External machining takes place.

The circle radius in SD42691 is the minimum possible radius.

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15.11 Circular travel in JOG

Circle segment machining

The start and end angles for defining a circle segment that limits the operating range are set in

the setting data:

SD42693 $SC_JOG_CIRCLE_START_ANGLE (circle start angle)

SD42694 $SC_JOG_CIRCLE_END_ANGLE (circle end angle)

The angle data refers to the abscissa of the active plane.

The direction from the start to the end angle is specified in the setting data:

SD42692 $SC_JOG_CIRCLE_MODE (jog circle mode)

Bit

Value

Meaning

The direction from the start to the end angle is counterclockwise.

The direction from the start to the end angle is clockwise.

Note

If the start and end angle are equal to zero, full circles can be traversed without limitation.

Allowance for tool radius

The consideration of the tool radius can be selected via the following setting data:

SD42692 $SC_JOG_CIRCLE_MODE (jog circle mode)

Bit

Value

Meaning

When monitoring the operating range limits (define circular arc; for circle segment

machining also the limits that result from the start and end angle), the tool radius is not

considered (basic setting).

When monitoring the operating range limits, the tool radius is considered.

15.11.3

Supplementary Conditions

Diameter programming active

During incremental traversing and handwheel traversing of the geometry axes of the active

plane, traversing always takes place in the radius programming, even if diameter programming

is active for one of the two involved geometry axes.

Axis is not a geometry axis

Both axes of the active plane must be defined as geometry axes:

• Either by configuration of MD20050 $MC_AXCONF_GEOAX_ASSIGN_TAB

• or by programming GEOAX in the part program

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15.11 Circular travel in JOG

If the axes of the active plane are not defined as geometry axes, then the axes are not traversed

and an alarm is output.

Axis is hirth axis

If an axis involved in the circular path is a hirth axis, then the axis is not traversed and an alarm

is output.

Protection zones

Protection zones are not monitored.

15.11.4

Application example

Initial situation

• The geometry axes are configured as follows:

MD20050 $MC_AXCONF_GEOAX_ASSIGN_TAB[0] = 1

1st geo. axis = 1st channel axis

MD20050 $MC_AXCONF_GEOAX_ASSIGN_TAB[1] = 2

2nd geo. axis = 2nd channel axis

MD20050 $MC_AXCONF_GEOAX_ASSIGN_TAB[2] = 3

3rd geo. axis = 3rd channel axis

• G17 is active (basic setting):

- X axis = 1st geometry axis of active plane

- Y axis = 2nd geometry axis of active plane

• The selected tool has a radius correction value of 0.02 mm.

• The current axis positions are:

- X axis: 10

- Y axis: 10

• The axes are homed.

Parameter assignment

SD42690 $SC_JOG_CIRCLE_CENTRE[AX1] = 10

Center of circle X axis to position 10 mm

SD42690 $SC_JOG_CIRCLE_CENTRE[AX2] = 20

Center of circle Y axis to position 20 mm

SD42691 $SC_JOG_CIRCLE_RADIUS = 20

Circle radius 20 mm

SD42692 $SC_JOG_CIRCLE_MODE = 2

Traversing with the plus key:

traversing the circle counter-clockwise

Consideration of the tool radius compen-

sation

Internal machining

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15.12 Retraction in the tool direction (JOG retract)

SD42693 $SC_JOG_CIRCLE_START_ANGLE = 0

No start angle active

SD42694 $SC_JOG_CIRCLE_END_ANGLE = 0

No end angle active

Result

Circle inside machining takes place.

With continuous traversing of the X axis using the plus traversing key, a counter-clockwise (G2)

circular movement can be initiated with a radius of 10 mm about the center point of the circle

(10, 20).

With the traversing of the Y axis, the circle radius can be changed between 0.02 and 19.98.

15.12

Retraction in the tool direction (JOG retract)

15.12.1

Overview

Function

The function "Retraction in the tool direction with the machine function JOG retract", called "JOG

retract" in the following, supports the manual tool retraction in the workpiece coordinate system

(WCS) after a program abort through a power off of the control or a channel reset in the

AUTOMATIC or MDI mode.

In particular, the specific features of the following functions are taken into account:

• Tapping with compensating chuck and speed-controlled spindle with encoder (G33)

• Tapping without compensating chuck and position-controlled spindle (G331, G332)

• Machining with tool orientation with swivel cycle CYCLE800 or orientation transformation

Availability

JOG retract can only be selected if one of the following functions was interrupted as a result of

a channel reset or power off:

• Tapping using G33/G331/G332

• Machining using tool type 2xx (drilling tools)

Data to be restored

In order to be able to execute the retraction in the tool direction after a program abort, the

following data which was active in the channel before the program abort, is restored:

• Active tool offset

• Active machining plane

• Active tool carrier

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15.12 Retraction in the tool direction (JOG retract)

• Active transformation data block with transformation parameters

• Data of the thread group with G33 or G331/G332

• Positions of the axes that are involved in the transformation

If this data is completely available after a program abort, it is restored in the channel when the

JOG retract machine function is selected. In this case, the workpiece coordinate system (WCS)

is aligned by the control in such a way that one of the geometry axes is in the direction of the tool

axis. The tool retraction can then be performed manually by traversing this geometry axis.

Note

Data backup

The specified data itself is not backed up, only the references to this data. If the data is changed

prior to the selection of JOG retract, the function is performed on the basis of the changed data.

Restrictions

Programs that can be started by interrupt signals are not executed in JOG retract.

15.12.2

Parameterization

15.12.2.1

Automatic selection of JOG retract after Power On

After the control has run up (Power On), the channels of a BAG are as standard in the

parameterized default mode:

MD10720 $MN_OPERATING_MODE_DEFAULT[<mode group>] = <default mode>

The following NC-specific machine data can be used to set which operating mode is selected

after the control run up, if there is retraction data in a BAG channel.

MD10721 $MN_OPERATING_MODE_EXTENDED[<mode group>] = <value>

Value

Meaning

Selection of the operating mode corresponding to MD10720 $MN_OPERATING_MODE_DE-

FAULT

Selection of JOG mode, if: DB21, ... DBX377.5 == 1 (retraction data available)

15.12.2.2

Enable of the traversing direction

The retraction movement can be limited to the positive direction of travel or enabled for both

travel directions using the following NC-specific machine data:

MD10735 $MN_JOG_MODE_MASK, Bit 8 = <Value>

Value

Meaning

Release: Positive traverse direction

Release: Positive and negative traverse direction

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15.12 Retraction in the tool direction (JOG retract)

15.12.2.3

Measuring system status

The current status of the measuring system is displayed via the following axis-specific machine

data or must be set to the desired behavior for selection:

MD34210 $MA_ENC_REFP_STATE[<Axis>] = <Value>

Value¹⁾

Meaning

Absolute encoder

Encoder is calibrated

Incremental encoder

Automatic referencing: Enabled, but encoder still not referenced

Automatic referencing: Encoder is referenced and in exact stop, automatic referencing takes

effect at next time encoder activation

Restoration of the actual position: The last axis position buffered before switching off is

restored, no automatic referencing

1) Only the values relevant for JOG-Retract are stated

15.12.3

Selection

Function

Requirement

The selection of JOG retract is only possible, if valid retraction data is available for the relevant

channel, the channel is in JOG mode and in the "Reset" state:

• DB21, … DBX377.5 == 1 (retraction data available)

• DB11 DBX(n*20+6).2 == 1 (active mode: JOG, with n=0, 1, 2 ... for mode group 1, 2, ...)

• DB21, … DBX35.7 == 1 (channel state: Reset)

Axes and spindles

All active measuring systems of the machine axes involved in the retraction in the tool direction

must be in the "referenced" or "restored" state when the control is switched on again (Power On).

Further information: For automatic restoration of actual positions after the next start of the

control (Power On), see Chapter "Homing (Page 31)".

Axis interchange

If all the axes and spindles involved in the retraction are not assigned to the channel at the time

of selection, an implicit axis interchange is performed for the missing axes.

Coordinate system

With the selection of JOG retract, the workpiece coordinate system (WCS) is set for the traversing

of the channel axes. Axes involved in the retraction can only be traversed in the WCS. All axes that

are not involved in the retraction can also be traversed in the machine coordinate system (MCS).

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15.12 Retraction in the tool direction (JOG retract)

Selection options

The selection of JOG Retract can be supported through automatic selection of the JOG mode

after Power On. The actual selection of JOG retract is performed through manual selection via

the user interface or via the PLC user program.

Automatic selection of JOG mode

If the automatic selection of JOG Retract is parameterized (see Chapter: "Automatic selection of

JOG retract after Power On (Page 752)") and there is retraction data for a channel after control

run-up (Power On), JOG mode is selected for the mode group.

Selection via the user interface

The selection of JOG retract is performed on the user interface via:

"Machine operating area" > "ETC key (">")" > "Retract"

Note

The softkey "Retract" is only displayed if there is retraction data and an active tool.

Selection by PLC user program

The following actions must be performed to select JOG retract by the PLC user program:

• Channel-specific query whether retraction data is available

DB21, … DBX377.5 == 1 (retraction data available)

• Mode group-specific selection of JOG mode:

DB11, ... DBX(n*20+6).2 == 1 (active mode: JOG, with n=0, 1, 2 ... for mode group 1, 2, ...)

• Channel-specific selection of JOG Retract via the PI service "RETRAC".

Further information: For activation of the PI service "RETRAC" via function block FB 4, see

PLC Function Manual.

• After confirmation of the selection of JOG retract (see below), select the workpiece

coordinate system:

- DB19.DBX0.7 (current coordinate system: 1 ⇒ WCS, 0 ⇒ MCS)

- DB19.DBX20.7 (Requirement: Switch over MCS/WCS)

Selection confirmation

After selecting JOG retract, the NC/PLC interface signal is set:

DB21, ... DBX377.4 = 1 (JOG retract active)

Thread cutting (G33 or G331/G332)

If the program execution was aborted during a thread cutting operation (G33 or G331/G332),

the axis grouping of tool axis and spindle is restored when JOG retract is selected. The controller

parameters and parameter sets for the axes involved are also set in accordance with a

programmed thread cutting in the part program.

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15.12 Retraction in the tool direction (JOG retract)

15.12.4

Tool retraction

General retraction behavior

The tool is retracted by manually traversing the retraction axis (geometry axis) specified when

selecting JOG retract in the workpiece coordinate system (WCS). The retraction movement can

be performed via the traversing keys of the machine control panel (MCP) or via the handwheel.

Retraction is possible within the traversing range limits (working area limitation, software limit

switch, etc.).

The retraction movement can be stopped and started again with NC stop / NC start.

The axes and spindles not involved in the tool retraction can be manually traversed as required.

Switching the coordinates systems is possible (MCS ⇔ WCS).

Traversing direction

The retraction movement is only enabled for the positive traversing direction by default. If

traversing in the negative direction is also to be possible, this must be explicitly enabled:

MD10735 $MN_JOG_MODE_MASK, bit 8 = 1

Retraction behavior dependent on processing type and tool type

The following retraction motion is possible depending on the machining type and the active tool

type:

• Thread cutting (G33) or tapping (G331,G332):

Irrespective of the tool type, traverse movements are only possible in the retraction axis (tool

axis)

• Tool type 2xx (drilling tools): traverse movements are only possible in the retraction axis (tool

axis)

• Tool type 4xx (grinding tools): No retraction motion possible

• Tool type 5xx (turning tools): No retraction motion possible

Retraction movement for thread processing

For thread cutting (G33) or tapping (G331,G332) the retraction movement is performed if

either the retraction axis or the spindle is moved.

Retraction using the handwheel

If one of the axes involved in the retraction movement is traversed by means of traversing key,

the handwheel pulses for other axes involved in the retraction movement are ignored.

If handwheels have been selected for several axes and these are moved, the handwheel pulses

are evaluated in the following order:

1. Retraction axis

2. Spindle

3. Axes/spindles not involved in the retraction movement

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15.12 Retraction in the tool direction (JOG retract)

The pulses of the other handwheels are ignored and only evaluated at standstill of the preceding

handwheels.

Locked functions

During JOG retract, the following functions are blocked or are not performed:

• Spindle start via DB31, ... DBX30

• Traversing of a spindle or axis involved in the retraction via function block FC18

• Switchover of a spindle or an axis involved in the retraction to the PLC-controlled axis

• Changing a spindle or axis involved in the retraction to another channel

• Using a spindle or axis involved in the retraction as main run axis (command axis, oscillating

axis, FC18 / concurrent axis)

15.12.5

Deselection

JOG retract is deselected channel-specifically via:

• Channel reset: DB21, … DBX7.7 = 1 (reset)

• User interface: "Back" ("<<") softkey

The following basic settings are active:

• MD20110 $MC_RESET_MODE_MASK[<channel>]

• MD20150 $MC_GCODE_RESET_VALUES[<channel>]

• MD20151 $MC_GCODE_RESET_MODE[<channel>]

After the deselection, the channel is in the JOG mode, channel state "Reset".

All channel axes can be moved manually again. The retraction data is retained. It is therefore

possible to select JOG retract again.

NC/PLC interface signal

With the deselection of JOG retract, the NC/PLC interface signal is reset:

DB21, ... DBX377.4 = 0 (JOG retract active)

15.12.6

Repeated selection

As long as there is retraction data, JOG retract can always be reselected:

DB21, ... DBX377.5 == 1 (retraction data available)

If selected again, the original retraction data is restored.

Changed axis positions

The channel axes can be traversed in JOG mode while JOG retract is deselected. If JOG retract is

selected again, the retraction movement is executed on the basis of the new axis positions.

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15.12 Retraction in the tool direction (JOG retract)

15.12.7

Continuing machining

AUTOMATIC mode

Before the aborted part program is continued with NC start in AUTOMATIC mode, all machine

axes with active measuring systems in the state "restored" or "not homed" must be homed.

NOTICE

Possible axis position displacement

After the control runs up after a power failure, the axis positions for incremental measuring

systems are synchronized or restored corresponding to the setting in machine data. Once the

tool has been retracted in the JOG retract machine function, axes whose positions have been

restored are homed.

MDI mode and overstore

In the MDI mode and for the overstore function, machining can also be performed, without

homing the axes, with restored positions. To do this, NC start with restored positions must be

enabled explicitly for a specific channel:

MD20700 $MC_REFP_NC_START_LOCK = 2

Block search at interruption point

The processing of the part program can be continued from the interruption point via a block

search at the interruption point. The last block of the main program level before the interruption

is available as interruption point.

A detailed description of the function and for the operation of the block search can be found in:

Further information

• Function Manual Basic Functions

• Operating Manual Turning or Operating Manual Milling

Continue with NC start

With NC start in the AUTOMATIC or MDI mode, the processing of the part program is continued

from the selected position. The following actions are performed with regard to JOG retract:

• The retraction data is deleted.

• The NC/PLC interface signal is reset:

DB21, … DBX377.5 = 0 (retraction data available)

• The current data environment is saved.

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15.12 Retraction in the tool direction (JOG retract)

15.12.8

Continuing machining

AUTOMATIC mode

Before the aborted part program is continued with NC start in AUTOMATIC mode, all machine

axes with active measuring systems in the state "restored" or "not homed" must be homed.

NOTICE

Possible axis position displacement

After the control runs up after a power failure, the axis positions for incremental measuring

systems are synchronized or restored corresponding to the setting in machine data. Once the

tool has been retracted in the JOG retract machine function, axes whose positions have been

restored are homed.

MDI mode and overstore

In the MDI mode and for the overstore function, machining can also be performed, without

homing the axes, with restored positions. To do this, NC start with restored positions must be

enabled explicitly for a specific channel:

MD20700 $MC_REFP_NC_START_LOCK = 2

Continue with NC start

With NC start in the AUTOMATIC or MDI mode, the processing of the part program is continued

from the selected position. The following actions are performed with regard to JOG retract:

• The retraction data is deleted.

• The NC/PLC interface signal is reset:

DB21, … DBX377.5 = 0 (retraction data available)

• The current data environment is saved.

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15.12 Retraction in the tool direction (JOG retract)

15.12.9

State diagram

1PXFS 0O

.PEF "650."5*$ PS .%*

DIBOOFM TUBUVT 3FTFU

#"8 +0(

NPEF DIBOHF "650."5*$ PS .%*

.PEF +0(

.PEF "650."5*$ PS .%*

DIBOOFM TUBUVT 3FTFU

#"8 +0(

BDUJWBUJPO

+0(

DIBOOFM SFTFU

/$ 4UBSU

DIBOOFM SFTFU

SFUSBDU

.PEF +0(

.PEF "650."5*$ PS .%*

+0( SFUSBDU BDUJWF

DIBOOFM TUBUVT BDUJWF

SFUSBDUJPO EBUB BSF SFDPSEFE

Operating mode

OMC Operating mode change

Figure 15-8

State diagram: JOG retract

15.12.10

System data

The following system data is available for JOG retract:

Meaning

System variable $VA_

NC/PLC interface

OPI variable

Retraction data available

DB21, ... DBX377.5

retractState, bit 0

JOG retract active

DB21, ... DBX377.4

retractState, bit 1

Retraction axis

retractState, bits 2 - 3

Position restored, 1st Measuring system

$AA_POSRES

DB31, ... DBX71.4

aaPosRes

Position restored, 2nd Measuring system

$AA_POSRES

DB31, ... DBX71.5

aaPosRes

Additional information

OPI and system variables

• List Manual System Variables

• PLC Function Manual

15.12.11

Supplementary conditions

Incremental measuring systems

The user must ensure that machine axes with incremental measuring systems are clamped with

sufficient speed in the event of a power failure to prevent a change to the last position, known

and saved by the control. Otherwise the assumed position when the control is restarted differs

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15.12 Retraction in the tool direction (JOG retract)

greatly to the actual position of the machine axis. Drive-autonomous retraction must also not

be activated for these axes.

A detailed description of the automatic restoration of actual positions after the next start of the

control (Power On) can be found in:

Additional information

Function Manual Basic Functions

Drive-autonomous retraction

The "Drive-autonomous retraction" function must not be activated for machine axes involved in

the retraction movement.

Axis couplings

Axis couplings are not restored with the selection of JOG retract.

Tapping using G63

JOG retract is not possible for tapping with compensating chuck and speed-controlled spindle

without encoder (G63).

Transformations

If a transformation is selected through JOG retract, the active measuring systems of all machine

axes involved in the transformation must be in the "homed" or "restored" state.

OEM transformations such as parallel kinematics for hexapods, can only be traversed with

homed measuring systems. Traversing with restored axis positions is not possible.

Tool orientation via directly programmed orientation axes

JOG retract cannot generate a retraction movement in the tool direction if the tool orientation

is not performed via NC functions, but through direct programming of the orientation axes.

NCU link

JOG retract is also possible in connection with cross-NCU traversing of axes. The state of axis

containers is not changed through JOG retract. Any adjustments required for a retraction in the

tool direction must be made by the user, e.g. in mode MDA, before the JOG retract movement.

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15.13 Use of handwheels in automatic mode

15.13

Use of handwheels in automatic mode

15.13.1

Handwheel override in automatic mode

15.13.1.1

General functionality

Function

With this function it is possible to traverse axes or to change their velocities directly with the

handwheel in automatic mode (Automatic, MDA).

The handwheel override is activated in the NC part program using the NC language elements FD

(for path axes) and FDA (for positioning axes) and is non-modal.

With positioning axes, it is possible to activate the handwheel override modally using traverse

command POSA. When the programmed target position is reached, the handwheel override

becomes inactive again.

Additional axes can be traversed simultaneously or using interpolation in the same NC block.

The concurrent-positioning-axes function can also be activated by the PLC user program.

Distinction

Depending on the programmed feedrate, a distinction is made between the following for

handwheel override:

• Path definition

Axis feedrate = 0 (FDA = 0)

• Velocity override

Axis feedrate > 0 (FD or FDA > 0)

The table below shows which axis types can be influenced by the "handwheel override in

automatic mode" function.

Axes that can be influenced by the "handwheel override in automatic mode" function

Axis type

Velocity override

Path definition

Positioning axis

FDA[AXi] > 0 ;

FDA[AXi] = 0

acts axially

Concurrent posi-

Parameter "Handwheel override active" = 1 and

Parameter "Handwheel over-

tioning axis

axis feedrate > 0 from FC18

ride active" = 1 and axis fee-

drate = 0 from FC18

Path axis

FD > 0 ;

Not possible

acts on path velocity

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15.13 Use of handwheels in automatic mode

Path definition

With axis feedrate = 0 (e.g. FDA[AXi] = 0), the traversing movement of the positioning axis

towards the programmed target position is controlled entirely by the user rotating the assigned

handwheel.

The direction in which the handwheel is turned determines the traversing direction of the axis.

The programmed target position cannot be exceeded during handwheel override. The axis can

also be moved toward the programmed target position from the opposite direction, whereby the

movement is only restricted by the axial position limitations.

A block change occurs when:

• The axis has reached the programmed target position

• The distance-to-go is deleted by axial interface signal

DB31, ... DBX2.2 (delete distance-to-go).

From this moment on, the path default is deactivated and any further handwheel pulses have no

effect.

After this, incrementally programmed positions refer to the point of interruption and not to the

last programmed position.

Velocity override

With regard to the velocity override, a distinction is made between axis feedrate and path

feedrate.

• Axis-velocity override (FDA[AXi] > 0):

The positioning axis is moved to the target position at the programmed axial feedrate. Using

the assigned handwheel, it is possible to increase the axis velocity or to reduce it to a

minimum of zero depending on the direction of rotation. The resulting axis feedrate is limited

by the maximum velocity. However, the axis cannot be traversed in the opposite direction to

that programmed.

The block change is performed as soon as the axis reaches the programmed target position.

This causes the velocity override to be deactivated automatically and any further handwheel

pulses have no effect.

Similarly, this also applies to concurrent positioning axes, where the target position and the

velocity are defined by the PLC.

• Path-velocity override (FD > 0):

The path axes programmed in the NC block traverse to the target position at the programmed

feedrate. If the velocity override is active, the programmed path velocity is overridden by the

velocity generated with the handwheel of the 1st geometry axis. The block change is

performed as soon as the programmed target position is reached.

The path velocity is increased or reduced to a minimum of zero depending on the direction

of rotation of the handwheel. However, it is not possible to reverse the direction of

movement with handwheel override.

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15.13 Use of handwheels in automatic mode

Application example

The "Handwheel override in automatic mode" function is frequently used on grinding machines.

For example, the user can position the reciprocating grinding wheel on the workpiece using the

handwheel (path default). After scratching, the traversing movement is terminated and the

block change is initiated (by activating DB31, ... DBX2.2 (delete distance-to-go)).

Preconditions

In order to activate "Handwheel override in automatic mode", the following requirements must

have been met:

• A handwheel must be assigned to the axis in question.

• Pulse weighting exists for the assigned handwheel.

Handwheel assignment

The assignment of the connected handwheels to the axes is analogous to the "Manual traversing

using a handwheel (Page 712)" via the user interface or via the PLC user interface with one of

the following interface signals:

• Machine axes:

- DB31, ... DBX4.0 - 2 (activate handwheel)

• Geometry axes:

- DB21, ... DBX12.0 - 2 (geometry axis 1: Activate handwheel)

- DB21, ... DBX16.0 - 2 (geometry axis 2: Activate handwheel)

- DB21, ... DBX20.0 - 2 (geometry axis 3: Activate handwheel)

If handwheel override is programmed for an axis to which no handwheel is assigned, a

distinction is made between the following cases:

• For velocity override:

The axes traverse at the programmed velocity.

A self-acknowledging alarm is output (without response).

• For path definition:

No traversing movement is performed because the velocity is zero.

A self-acknowledging alarm is output (without response).

Note

For the velocity override for path axes, only the handwheel of the 1st geometry axis is

applied to the path velocity.

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15.13 Use of handwheels in automatic mode

Handwheel weighting

The travel path of the axis that is generated by rotating the handwheel by one detent position

is dependent on several factors (see Section "Manual traversing using a handwheel (Page 712)"):

• Selected increment size:

MD11330 $MN_JOG_INCR_SIZE_TAB[5] (increment size for INC/handwheel)

SD41010 $SN_JOG_VAR_INCR_SIZE (size of the variable increment for JOG)

• Weighting of an increment:

MD31090 $MA_JOG_INCR_WEIGHT

• Number of handwheel pulses per detent position:

MD11320 $MN_HANDWH_IMP_PER_LATCH

For example, the axis traverses by 0.001 mm per handwheel detent position if machine function

INC1 and the default setting of the above machine data are selected.

In the case of velocity override, the velocity results from the traverse path covered using the

handwheel within a certain period of time.

Example

Assumptions:

The operator turns the handwheel with 100 pulses/second.

The selected machine function is INC100.

The default setting is made for the above machine data for handwheel weighting.

⇒ Handwheel traverse path per second:

10 mm

⇒ Velocity override:

0.6 m/min

PLC interface signals

As soon as the handwheel override takes effect, the following interface signals to the PLC are set

to signal 1:

• For positioning axes / concurrent positioning axes / command axes / reciprocating axes:

DB31, ... DBX62.1 (handwheel override active)

• For path axes:

DB21, ... DBX33.3 (handwheel override active)

For the path input, depending on the traversing direction, the appropriate interface signals are

output to the PLC:

• Machine axes:

- DB31, ... DBX64.6 / 7 (travel command "minus"/"plus")

• Geometry axes:

- DB21, ... DBX40.6 - 7 (geometry axis 1: Travel command "minus"/"plus")

- DB21, ... DBX46.6 - 7 (geometry axis 2: Travel command "minus"/"plus")

- DB21, ... DBX52.6 - 7 (geometry axis 3: Travel command "minus"/"plus")

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15.13 Use of handwheels in automatic mode

Limitations

The axial limitations (software limit switch, hardware limit switch, working area limitation) are

effective in conjunction with handwheel override. With path default, the axis can be traversed

with the handwheel in the programmed traversing direction only as far as the programmed

target position.

The resulting velocity is limited by the axial machine data:

MD32000 $MA_MAX_AX_VELO(maximum axis velocity)

NC Stop/override = 0

If the feedrate override is set to 0% or an NC Stop is initiated while the handwheel override is

active, the following applies:

• For path definition:

The handwheel pulses arriving in the meantime are summated and stored. If NC Start or the

feedrate override > 0%, the saved handwheel pulses become effective (i.e. are traversed).

However, if the handwheel is first deactivated [via IS DB21, ... DBX12/16/20.0-2 (geometry

axes 1/2/3: Activate handwheel)] then the stored handwheel pulses are deleted.

• For velocity specification:

The handwheel pulses arriving in the meantime are not summated and are not active.

15.13.1.2

Programming and activating handwheel override

General

When the handwheel override is programmed with NC language elements FD (for path axes)

and FDA (for positioning axes), the following points must be observed:

• FDA and FD function non-modally.

Exception for positioning axes: If traverse instruction POSA is programmed, the handwheel

override can also act modally because this positioning axis does not affect the block

transition.

• When the handwheel override is activated with FDA or FD, a target position must be

programmed in the NC block for the positioning axis or for a path axis. When the

programmed target position is reached, the handwheel override becomes inactive again.

• It is not possible to program FDA and FD or FA and F in the same NC block.

• The positioning axis must not be an indexing axis.

Positioning axis

Syntax for handwheel override:

FDA[AXi] = [feedrate value]

Example 1:

Activate velocity override

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15.13 Use of handwheels in automatic mode

N10 POS[U]=10 FDA[U]=100 POSA[V]=20 FDA[V]=150 . . .

POS[U]=10

Target position of positioning axis U

FDA[U]=100

Activate velocity override for positioning axis U; axis velocity of U = 100 mm/

min

POSA[V]=20

Target position of positioning axis V (modally)

FDA[V]=150

Activate velocity override for positioning axis V; axis velocity of V = 150 mm/

min

Example 2:

Activate path default and velocity override in the same NC block

N20 POS[U]=100 FDA[U]= 0 POS[V]=200 FDA[V]=150 . . .

POS[U]=100

Target position of positioning axis U

FDA[U]= 0

Activate path default for positioning axis U;

POS [V]=200

Target position of positioning axis V

FDA[V]=150

Activate velocity override for positioning axis V; axis velocity of V =

150 mm/min

Path axis

Syntax for handwheel override:

FD = [feedrate value]

In order to activate "Handwheel override in automatic mode", the following requirements must

have been met:

• Active movement commands from group 1: G01, G02, G03, CIP

• Exact stop active (G60)

• Linear feedrate in mm/min or inch/min active (G94)

These requirements are checked by the control and an alarm is output if any of them is not met.

Example 3:

Activate velocity override

N10 G01 X10 Y100 Z200 FD=1500 . . .

X10 Y100 Z200

Target position of path axes X, Y and Z

FD=1500

Activate velocity override for path axes; path velocity = 1500 mm/

min

Concurrent positioning axis

The handwheel override for concurrent positioning axes is activated from the PLC via FC18 by

setting the appropriate interface signal:

DB31, ... DBX62.1 (handwheel override active)

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15.13 Use of handwheels in automatic mode

If the velocity parameter (F_Value) is transferred with the value 0, then the activated handwheel

override acts as distance input, i.e. in this case, the feed is not derived from the axial machine

data (see also Section "Positioning axes (Page 271)"):

MD32060 $MA_POS_AX_VELO (initial setting for positioning axis velocity)

Further information

Function Manual PLC

15.13.1.3

Special features of handwheel override in automatic mode

Velocity display

The following values are shown with display of the speed for handwheel override:

• Setpoint velocity

= programmed velocity

• Actual velocity

= resultant velocity including handwheel override

Effect on transverse axes

If the axis is defined as a transverse axis and DIAMON is active, the handwheel pulses are

interpreted and traversed as diameter values while handwheel override is active.

Dry run feedrate

With active dry run

DB21, ... DBX0.6 (activate dry run feedrate) = 1,

the dry run feedrate is always effective

SD42100 $SC_DRY_RUN_FEED.

In this way, the axis is traversed to the programmed target position at dry run feedrate without

any influence from the handwheel despite the active handwheel override with path default

(FDA[AXi] = 0), i.e., the path default is ineffective.

DRF active

When "Handwheel override in automatic mode" is activated, it is important to check whether the

"DRF" function is active (DB21, ... DBX0.3 = 1).

If this were the case, the handwheel pulses would also cause a DRF offset of the axis. DRF must

therefore be deselected first.

Feedrate override

The feedrate override does not affect the velocity of the movements produced by the handwheel

(exception: 0%). It only affects the programmed feedrate.

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15.13 Use of handwheels in automatic mode

With path default and fast handwheel movements, the axis may not be able to follow the

handwheel rotation synchronously (especially in the case of a large handwheel-pulse

weighting), causing the axis to overtravel.

15.13.2

Contour handwheel/path input using handwheel (option)

"Contour handwheel" function

When the function is activated, the path and synchronized axes can be controlled via a

handwheel in AUTOMATIC and MDI modes.

Requirements

It is not permissible that fixed feedrate, dry run feedrate, thread cutting, or tapping are selected.

Availability

The "Contour handwheel" function is available as an option requiring a license.

Input mode (path or velocity input)

Either the distance or the velocity can be entered via the handwheel:

• Path definition

The traversing velocity obtained as a result of the path defined by the handwheel pulses each

IPO clock cycle, is limited by the control system to the maximum permissible velocity. The

handwheel pulses that are not immediately executed are collected, and traversed through at

a later point in time. As a consequence, it is possible that the axes continue to run. No pulses

are lost.

• Velocity specification

Based on the handwheel pulses for each IPO clock cycle, the velocity is specified at which the

axes will be traversed. Traversing motion is immediately stopped as soon as no pulses are

received from the handwheel in an IPO clock cycle. The axes do not continue to run .

The input mode is set with machine data:

MD11346 $MN_HANDWH_TRUE_DISTANCE

Path velocity

The path velocity in mm/min depends on:

• Handwheel pulses in each IPO clock cycle

• Pulse evaluation of the handwheel using machine data:

MD11322 $MN_CONTOURHANDWH_IMP_PER_LATCH

• Active increment (INC1, 10, 100, ...)

• Distance weighting of an increment of the first available geometry axis:

MD31090 $MA_JOG_INCR_WEIGHT

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15.13 Use of handwheels in automatic mode

The path velocity is independent of:

• Programmed feedrate mode (mm/min, mm/rev.)

• Programmed path velocity

• Rapid traverse velocity for G0 blocks

• Override (with the exception of 0% override)

Traversing direction

The traversing direction depends on the direction of rotation of the handwheel:

• Clockwise rotation: Traversing the axes in the programmed direction.

If the block change criterion (IPO end) is reached, the program advances to the next block

(response identical to G60).

• Counterclockwise: Traversing the axes opposite to the programmed direction.

In this case, traversing is only possible up to the start of the actual block. Pulses are not

collected if the handwheel continues to rotate.

Activation of the function

The function can be activated via interface signals or in the NC program:

• Activation via interface signal

DB21, ... DBX30.0 - 2

• Activation via the NC program

Command FD=0 . The contour handwheel is switched on non-modally. This means in the

following block, the programmed velocity F... from the block before the contour

handwheel again applies when the contour handwheel is activated.

Note

An alarm is displayed if no feedrate was programmed in the previous NC blocks.

"Simulated contour handwheel" function

When the "Contour handwheel" function is active, using the "Simulated contour handwheel"

function, the handwheel or the handwheel pulses are simulated.

Activation

The function is activated via interface signal:

DB21, ... DBX30.3 = 1

The feedrate is then no longer specified by the handwheel pulses, but by feedrate F...

programmed in the NC program.

Specifying the direction of rotation

The direction of rotation of the simulated handwheel is specified using the interface signal:

DB21, ... DBX30.4

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15.13 Use of handwheels in automatic mode

Override

When the "Simulated contour handwheel" function is active, the override is effective as for NC

program execution.

Stopping traversing motion

If the "Simulated contour handwheel" function is deselected, or the direction of rotation

switched over, then the actual traversing motion is stopped along a braking ramp.

Boundary conditions

• Velocity limiting

- When the "Contour handwheel" function is activated via interface signal (DB21, ...

DBX30.0 - 2), the path velocity that can be entered via the handwheel is limited to:

Max. path velocity = (programmed path velocity F...) * (MD12030

$MN_OVR_FACTOR_FEEDRATE[ 30 ] + reserve for dynamic operations)

- When the "Contour handwheel" function is activated using command FD=0 in the NC

program, the path velocity that can be entered via the handwheel is limited to the

maximum axis velocities defined in machine data (MD32000 $MA_MAX_AX_VELO).

• Acceleration and velocity limit values

When traversing the axes using the "Contour handwheel" function, the axis-specific limit

values for acceleration, defined in machine data (e.g. MD32300 $MA_MAX_AX_ACCEL), and

velocity (MD32000 $MA_MAX_AX_VELO) are maintained.

• Interruption of traversing movement

If, while traversing using the "Contour handwheel" function, an NC stop is initiated (DB21, ...

DBX7.3 or 4), then the function remains selected. The handwheel pulses received during an

NC stop are not evaluated. Requirement: MD32084 $MA_HANDWH_CHAN_STOP_COND, bit

2 == 1

• DRF

An active DRF function (DB21, ... DBX0.3) additionally has a path override action.

• Channel-specific delete distance-to-go

Channel-specific delete distance-to-go (DB21, ... DBX6.2) causes the motion, initiated by the

contour handwheel, to be canceled. The axes are braked and the program is restarted with

the next NC block.

• Mold making

Executing mold making programs using the contour handwheel does not produce a suitable

surface quality or constant cutting speed.

15.13.3

DRF offset

15.13.3.1

Function

The "DRF offset" function (differential resolver function) can be used to set an additive

incremental work offset in respect of geometry and auxiliary axes in the basic coordinate system

in AUTOMATIC mode via an electronic handwheel.

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15.13 Use of handwheels in automatic mode

The handwheel assignment, i.e. assignment of the handwheel from which the increments for

the DRF offset are derived, to the geometry or auxiliary axes which is to be shifted as a result,

must be performed via the appropriate machine axis. The appropriate machine axis is that

machine axis on which the geometry or auxiliary axis is mapped.

The DRF offset is not displayed in the axis actual-value display.

Effectiveness

The work offset introduced via the DRF offset is always effective in all modes by way of an end

of program/channel reset.

It can, however, be suppressed block-by-block in the part program.

The DRF offset is deleted with execution of a warm restart.

Applications

The DRF offset can be used, for example, in the following application cases:

• Offsetting tool wear within an NC block

Where NC blocks have very long processing times, it becomes necessary to offset tool wear

manually within the NC block (e.g. large surface-milling machines).

• Highly precise offset during grinding

• Simple temperature compensation

Activation

DRF must be active to allow the DRF offset to be modified by means of traversal with the

handwheel in AUTOMATIC mode.

Selection

The "Handwheel offset" function is selected for the channel displayed in the "Machine" basic

display via the user interface, e.g. SINUMERIK Operate:

1. Softkey: Operating area "Machine" > "Program control"

2. "Program control" menu: select checkbox "Handwheel offset (DRF)".

The following signal is set in the HMI/PLC interface to request that the PLC user program activates

the function:

DB21, ... DBX24.3 (handwheel offset requested) == 1

Note

The function may also be directly activated via the PLC user program by setting the

corresponding activation signal in the NC/PLC interface.

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15.13 Use of handwheels in automatic mode

Activation

To request that the NC activates the function, the PLC program must set the following NC/PLC

interface signal:

DB21, ... DBX0.3 (activate handwheel offset) == 1

Feedback signal

The following NC/PLC interface signal is set as feedback signal to the PLC user program that the

function is active in the NC:

DB21, ... DBX33.3 (handwheel offset active) == 1

Influencing and control of the DRF offset

The DRF offset can be modified, deleted or read:

1-$ VTFS QSPHSBN

).* PQFSBUPS

/$ QBSU QSPHSBN IJHI MFWFM

MBOHVBHF

3FBE

%FMFUF

3FBE

"YJT O

%3' P꫻TFU

"YJT

DIBOHF JO JODSFNFOUT

)BOEXIFFM QVMTFT

./@)"/%8)@*.1@1&3@-"5$)

QFS MPDLJOH QPTJUJPO

4FMFDUFE JODSFNFOU

*/$ ܵ

./@+0(@*/$3@4*;&@5"#

"DUJWF NBDIJOF GVODUJPOT JOUFSGBDF TJHOBM

TJ[F

*/$WBS

./@+0(@7"3@*/$3@4*;&

"DUJWBUF %3'

).* JOUFSGBDF TJHOBM

%3' TFMFDUFE

JOUFSGBDF TJHOBM

%3' BDUJWF

"VUPNBUJD BDUJWF NPEF

)BOEXIFFM

Components

Action

Operator

• Traversing with the handwheel

Part program

• Reading via axis-specific system variable $AC_DRF[<axis>]

• Deleting via parts-program command (DRFOF) for all axes in a chan-

nel

• Non-modal suppression via parts-program command (SUPA)

Further information: NC Programming Programming Manual

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15.13 Use of handwheels in automatic mode

Components

Action

PLC user program

• Reading the DRF offset (axis-specific)

Further information: PLC Function Manual

User interface

• Display of the DRF offset (axis-specific)

Note

Display

The axis actual-position display (ACTUAL POSITION) does not change while an axis is being

traversed with the handwheel via DRF. The current DRF offset of the axis can be displayed in the

"DRF" window.

Note

Deleting the DRF offset

If DRF offset is deleted, the axis is not traversed!

Reference point approach

In phase 1 of the machine-axis reference point approach, the DRF offset for the corresponding

geometry or auxiliary axis is deleted.

During the machine-axis reference point approach, a DRF offset for the corresponding geometry

or auxiliary axis cannot be performed simultaneously.

15.13.3.2

Parameterization

Velocity reduction

The velocity generated using the handwheel for DRF can be reduced with respect to the JOG

velocity:

MD32090 $MA_HANDWH_VELO_OVERLAY_FACTOR (ratio of JOG velocity to handwheel

velocity (DRF))

15.13.3.3

Programming: Deselecting overlays axis-specifically (CORROF)

The following axis-specific overlays (overrides) are deleted with the CORROF procedure:

• Additive work offsets (DRF offsets) set via handwheel traversal

• Position offsets programmed via the $AA_OFF system variable

A preprocessing stop is initiated through the deletion of an overlay (override) value and the

position component of the deselected overlaid movement is transferred to the position in the

basic coordinate system. Whereby, no axis is traversed.

The position value that can be read via the $AA_IM system variable (current MCS setpoint of the

axis) does not change in the machine coordinate system.

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15.13 Use of handwheels in automatic mode

The position value that can be read via the $AA_IW system variable (current WCS setpoint of the

axis) changes in the workpiece coordinate system because it now contains the deselected

component of the overlaid movement.

Note

CORROF can be programmed in an NC program.

CORROF must not be programmed in a synchronized action.

Syntax

CORROF(<Axis>,"<String>"[,<Axis>,"<String>"])

Meaning

CORROF:

Procedure for the deselection of the following offsets and overlays of an axis:

• DRF offset

• Position offsets ($AA_OFF)

Effectiveness:

Modal

<Axis>:

Axis identifier (channel, geometry or machine axis identifier)

Data type:

AXIS

<String>:

Character string for the definition of the overlay type

Data type:

BOOL

Value

Meaning

DRF

DRF offset

AA_OFF

Position offset ($AA_OFF)

Examples

Example 1: Axis-specific deselection of a DRF offset (1)

A DRF offset is generated in the X axis by DRF handwheel traversal. No DRF offsets are operative

for any other axes in the channel.

Program code

Comment

N10 CORROF(X,"DRF")

; CORROF has the same effect as DRFOF here.

Example 2: Axis-specific deselection of a DRF offset (2)

A DRF offset is generated in the X and Y axes by DRF handwheel traversal. No DRF offsets are

operative for any other axes in the channel.

Program code

Comment

; Only the DRF offset of the X axis is deselected; the DRF offset of the Y axis is

retained.

; With DRFOF, both offsets would have been deselected.

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15.13 Use of handwheels in automatic mode

Program code

Comment

N10 CORROF(X,"DRF")

Example 3: Axis-specific deselection of a $AA_OFF position offset

Program code

Comment

; A position offset == 10 is interpolated for the X axis.

N10 WHEN TRUE DO $AA_OFF[X]=10 G4 F5

; The position offset of the X axis is deselected: $AA_OFF[X]=0

; The X axis is not traversed.

; The position offset is added to the current position of the X axis.

N80 CORROF(X,"AA_OFF")

Example 4: Axis-specific deselection of a DRF offset and a $AA_OFF position offset (1)

A DRF offset is generated in the X axis by DRF handwheel traversal. No DRF offsets are operative

for any other axes in the channel.

Program code

Comment

; A position offset of 10 is interpolated for the X axis.

N10 WHEN TRUE DO $AA_OFF[X]=10 G4 F5

; Only the DRF offset and the position offset of the X axis are deselected.

; The DRF offset of the Y axis is retained.

N70 CORROF(X,"DRF",X,"AA_OFF")

Example 5: Axis-specific deselection of a DRF offset and a $AA_OFF position offset (2)

A DRF offset is generated in the X and Y axes by DRF handwheel traversal. No DRF offsets are

operative for any other axes in the channel.

Program code

Comment

; A position offset == 10 is interpolated for the X axis.

N10 WHEN TRUE DO $AA_OFF[X]=10 G4 F5

; The DRF offset of the Y axis and the position offset of the X axis are deselected.

; The DRF offset of the X axis is retained.

N70 CORROF(Y,"DRF",X,"AA_OFF")

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15.13 Use of handwheels in automatic mode

Further information

$AA_OFF_VAL

Once the position offset has been deselected by means of $AA_OFF, system variable

$AA_OFF_VAL (integrated distance of axis overlay) for the corresponding axis will equal zero.

$AA_OFF in JOG mode

Also in JOG mode, if $AA_OFF changes, the position offset will be interpolated as an overlaid

movement if this function has been enabled via machine data MD 36750 $MA_AA_OFF_MODE.

$AA_OFF in synchronized action

If a synchronized action which immediately resets $AA_OFF

(DO $AA_OFF[<axis>]=<value>) is active when the position offset is deselected using the

CORROF(<axis>,"AA_OFF"), then $AA_OFF will be deselected and not reset, and alarm

21660 will be displayed. However, if the synchronized action becomes active later, e.g. in the

block after CORROF, $AA_OFF will remain set and a position offset will be interpolated.

Automatic channel axis exchange

If an axis that is active in another channel has been programmed for a CORROF, it will be fetched

into the channel with an axis exchange (requirement: MD30552 $MA_AUTO_GET_TYPE > 0) and

the position offset and/or the DRF offset deselected.

15.13.4

Double use of the handwheel

Alarm 14320

The double use of a handwheel for DRF and velocity or distance overlay, including contour

handwheel, is suppressed and is displayed using the self-clearing alarm 14320 (Handwheel %1

used twice (%2) in channel %3 axis %4), if, different influences can act on an axis as a result of

the handwheel.

This means that an overlaid movement can only be executed when no DRF offset (triggered by

the same handwheel) is active for the axes in the basic coordinate system that are involved in the

movement, i.e., the DRF movement must have been terminated.

If an overlaid movement has been started, no DRF offset can be started for any of the axes

involved that are supplied by the same handwheel. Such a DRF movement is only possible when

the movement with overlay has reached its end point or has been aborted by delete distance-to-

go or RESET.

If the handwheel override and DRF offset are to be active simultaneously, this is possible with

activation of two separate handwheels.

Example: Path override

Assumption:

Channel 1 and geometry axis X correspond to machine axis 3 and geometry axis Y corresponds

to machine axis 5 and handwheel 2 is selected for the first geometry axis.

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15.14 Monitoring functions

If block X10 Y10 FD=0 is processed in the main run, neither machine axis 3 nor machine axis 5

can be traversed with DRF via handwheel 2. If handwheel 2 is assigned to machine axis 3 while

the channel-specific DRF signal is active, then alarm 14320 (Handwheel 2 used twice (8) in

channel 1 axis X) is signaled.

If machine axis 3 or machine axis 5 is traversed with DRF using the 2nd handwheel, then motion

X10 Y10 FD=0 cannot be executed and alarm 14320 (handwheel 2 used twice (3) in channel 1

axis X) or alarm 14320 (handwheel 2 used twice (3) in channel 1 axis Y) is signaled.

Example: Velocity override of positioning axis

Assumption:

Channel 1: Channel axis A corresponds to machine axis 4 and handwheel 1 is assigned to this

axis.

If block POS[A]=100 FDA[A]=0 is processed in the main run, machine axis 4 cannot be

traversed with DRF. This means that if the channel-specific DRF signal is active, alarm 14320

(Handwheel 1 used twice (6) in channel 1 axis A) is signaled.

If machine axis 4 is traversed with DRF, then no POS[A]=100 FDA[A]=0 movement can be

executed while a DRF movement is being performed. Alarm 14320 (Handwheel 1 used twice (1)

in channel 1 axis A) is signaled.

Example: Distance overlay PLC axis (840D sl)

Assumption:

Channel 1: Handwheel 2 is assigned to machine axis 4.

If an axis movement with path override of the 4th machine axis triggered by FC18 is processed

in the main run, machine axis 4 cannot be traversed with DRF. This means that if the channel-

specific DRF signal is active, alarm 14320 (Handwheel 2 used twice (9) in channel 1 axis A) is

signaled.

If machine axis 4 is traversed with DRF, then no axis movement with path override triggered by

FC18 can be executed while a DRF movement is being performed. Alarm 14320 (Handwheel 2

used twice (4) in channel 1 axis A) is signaled.

15.14

Monitoring functions

Limitations

For manual traversing and manual traversing using a handwheel, the following limits apply:

• Working area limitation (the axis must be referenced).

• Software limit switches 1 and 2 (axis must be referenced)

• Hardware limit switches

The control ensures that the traversing movement is aborted as soon as the first valid limitation

has been reached. Velocity control ensures that deceleration is initiated early enough for the axis

to stop exactly at the limit position (e.g. software limit switch). Only when the hardware limit

switch is triggered does the axis stop abruptly with "rapid stop".

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15.15 Start-up: Handwheels

Alarms are triggered when the various limitations are reached (alarms 16016, 16017, 16020,

16021). The control automatically prevents further movement in this direction. The traversing

keys and the handwheel have no effect in this direction.

Note

The software limit switches and working-area limitations are only active if the axis has first been

referenced.

If a work offset (DRF offset) via handwheel is active for axes, the software limit switches for these

axes are monitored during the main run in JOG mode. This means that the jerk limitation has no

effect when the software limit switches are approached. After acceleration in accordance with

MD32300 $MA_MAX_AX_ACCEL (maximum axis acceleration) the velocity is reduced at the

software limit switch.

For further information on working area limitations and hardware and software limit switches,

see:

Further information

Function Manual Monitoring and Compensating; Axis monitoring, protection zones

Retract axis

The axis can be retracted from a limit position by moving it in the opposite direction.

Note

Machine manufacturer

The function for retracting an axis that has approached the limit position depends on the

machine manufacturer. Please refer to the machine manufacturer's documentation!

Maximum velocity and acceleration

The velocity and acceleration used when manually traversing are defined by the startup

engineer for specific axes using machine data. The control limits the values acting on the axes

to the maximum velocity and acceleration specifications.

Further information

Acceleration and jerk (Page 79)

Velocities, setpoint/actual value systems, closed-loop control (Page 135)

15.15

Start-up: Handwheels

15.15.1

General information

In order to operate handwheels of a SINUMERIK control system, they have to be parameterized

via NC machine data.

Axes and spindles

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Manual traversing

15.15 Start-up: Handwheels

If the handwheels are not directly connected to the control, additional measures are required,

e.g. connection via PROFIBUS- or Ethernet-MCP or handwheel module, inserting and

configuring the module with SIMATIC STEP 7, HW-Config.

Note

Currently only six handwheels can be parameterized in a SINUMERIK control system.

Connection options

SINUMERIK 840D sl

For SINUMERIK 840D sl, handwheels can be connected via the following components:

• PROFIBUS (Page 779) module

• Ethernet (Page 782) module

Note

Several handwheels, which are connected via different components, can be connected to one

SINUMERIK 840D sl at the same time.

15.15.2

Connection via PROFIBUS

Parameterization

The parameter assignment of handwheels connected via PROFIBUS modules (e.g. "MCP 483"

machine control panel) is performed with the following NC machine data:

• MD11350 $MN_HANDWHEEL_SEGMENT[<Handwheel_No._in_NCK - 1>] = 5

When connected via PROFIBUSmodule, the hardware segment has always to be entered as

5 (PROFIBUS).

• MD11351 $MN_HANDWHEEL_MODULE[<Handwheel_No._in_NCK - 1>] = <Index + 1>

The reference to the MD11353 $MN_HANDWHEEL_LOGIC_ADDRESS[<Index>]

has to be entered, which contains the logical base address of the handwheel.

• MD11352 $MN_HANDWHEEL_INPUT[<Handwheel_No._in_NCK - 1>] =

<Number_in_handwheel_slot>

A handwheel slot can contain several handwheels. The number of the handwheel within the

handwheel slot has to entered: 1, 2, ...

• MD11353 $MN_HANDWHEEL_LOGIC_ADDRESS[<Index>] = <logical base address>

The logical base address of the handwheel slot, specified in SIMATIC STEP 7, HW Config, has

to be entered.

Axes and spindles

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SINUMERIK 840D sl. Service - Functions. Manual (2018-2020) - page 14