Siemens SINUMERIK 840D sl Function Manual page 364

Detailed Description
2.1 General functionality
Modal activation (FOCON/FOCOF)
The activation of the function after POWER_ON and RESET is determined by the machine
data:
MD37080 $MA_FOC_ACTIVATION_MODE
Table 2-1
Bit 0
Bit 1
FOCON: Activation of the modally effective torque/force limitation
FOCOF: Disable torque/force limitation
The modal activation acts beyond the program end.
If already programmed, it is effective with FXST set torque/force.
FXST can be programmed irrespectively of FOCON; it comes into effect, however, only after
the function has been activated.
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.
28
Controlling the initial setting of the modal limitation of torque/force
After
Power On
RESET
Value
0
1
0
1
; 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
Basic logic functions: Travel to fixed stop (F1)
Function Manual, 11/2006, 6FC5397-0BP10-2BA0
Effect
FOCOF
FOCON
FOCOF
FOCON