Siemens SINUMERIK 840Di Function Manual page 345

Programming
The programming of the axis is carried out in square brackets.
The following are permissible:
• Geometry axis identifiers
• Channel axis identifiers
• Machine axis identifiers
Example:
N10 FOCON[X]
N20 X100 Y200 FXST[X]=15
N30 FXST[X]=75 X20
N40 FOCOF[X]
Block-related limit (FOC)
The parts program command FOC activates the torque limit for a block.
An activation from a synchronized action takes effect up to the end of the current parts
program block.
Priority FXS/FOC
An activation of FXS with FOC active has priority, i.e. FXS is executed.
A deselection of FXS will cancel the clamping.
A modal torque/force limitation remains active.
After PowerOn, the machine data:
MD37010 FIXED_STOP_TORQUE_DEF. is effective in an activation.
This torque can be modified at any time by programming FXST.
Synchronized actions
The language commands FOC, FOCON, FOCOF can also be programmed in synchronized
actions as the commands for "Travel to fixed stop."
Determine FOC status
The activation status can be read at any time via the status variable $AA_FOC.
If FXS is also activated, the status is not changed.
0:
1:
2:
Travel to Fixed Stop (F1)
Function Manual, 08/2005 Edition, 6FC5397-0BP10-0BA0
FOC not active
FOC modal active
FOC block-related active
; Modal activation of the torque limit
; X travels with reduced torque (15%)
; Changing the torque to 75%
; X travels with this reduced torque
; Disable torque limit
Detailed Description
2.1 General functionality
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