Siemens SINUMERIK 840D sl Programming Manual page 364

Fundamentals
2.14 Supplementary commands
Example:
Program code
X250 Y100 F100 FXS[X1]=1 FXST[X1]=12.3 FXSW[X1]=2
...
Deactivate travel to fixed stop: FXS[<axis>] = 0
Deselection of the function triggers a preprocessing stop.
The block with FXS[<axis>]=0 may and should contain traversing movements.
NOTICE
Risk of collision
The traversing movement to the retraction position must move away from the fixed stop,
otherwise damage to the stop or to the machine may result.
The block change takes place when the retraction position has been reached. If no retraction
position is specified, the block change takes place immediately after the torque limit has been
deactivated.
Example:
Program code
X200 Y400 G01 G94 F2000 FXS[X1]=0
...
364
Comment
; Axis X1 travels with feedrate
F100 (specification optional)
to target position X=250 mm.
The clamping torque is 12.3% of
the maximum drive torque, moni-
toring is performed in a 2 mm
wide window.
Comment
; Axis X1 is retracted from the fixed
stop to position X = 200 mm. All other
parameters are optional.
Programming Manual, 12/2019, 6FC5398-2EP40-0BA0
NC programming