Tolerance Window - Siemens SINUMERIK 840D sl Function Manual

TE6: MCS coupling
14.2 Description of MCS coupling functions
A coupling can be disabled via the CC_Slave axis in axial VDI-Out byte:
DB31, ... DBX24.2 (disable CC_Slave axis coupling)
This does not generate an alarm.
CC_COPOFF()
CC_COPOFF([A1][A2][A3][A4][A5])
As CC_COPON or CC_COPONM() except for the fact that no alarm is generated if A1 to A5
is used to program an axis that is not involved in a coupling.
An existing coupling can also be switched off via the axial VDI-In bit on the CC-Slave axis.
The coupling can be switched ON or OFF only if all axes involved are stationary.
14.2.3

Tolerance window

A monitoring window is specified via axial machine data:
MD63541 $MA_CC_POSITION_TOL (monitoring window)
The absolute difference between the actual values of CC_Slave axis and CC_Master axis
must never be greater than this value. Alarm 70010 is output if the tolerance window is
violated.
The monitoring function is not active:
• if the machine data is set to 0,
• if the coupling is switched off,
• if axis/spindle inhibit is set for one of the axes,
• if an axis is in follow-up mode,
• for the 1:-1 coupling.
If the offset stored at the instant of coupling activation changes when 1:1 coupling is active,
the change is indicated by NC => PLC VDI-SS:
DB31, ... DBX97.3 (offset after start-up)
Note
The offset might change:
• if the SW limit monitor was active for one axis during the main run,
• if one axis has been switched to follow-up mode,
• if collision protection was active for one axis.
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Function Manual, 09/2011, 6FC5397-2BP40-2BA0
Special Functions