Siemens SINUMERIK 840D sl Function Manual page 365

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 activation takes effect with the machine data:
MD37010 $MA_FIXED_STOP_TORQUE_DEF.
This torque can be modified at any time by programmingFXST.
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:
Determine torque limit status
The system variables $VA_TORQUE_AT_LIMIT can be used at any time to read in systems
with digital drives (FDD, MSD, HLA) whether the currently active torque corresponds to the
given torque limit.
0:
1:
Basic logic functions: Travel to fixed stop (F1)
Function Manual, 11/2006, 6FC5397-0BP10-2BA0
FOC not active
FOC modal active
FOC block-related active
Effective torque less than torque limit value
Effective torque has reached the torque limit value
Detailed Description
2.1 General functionality
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