Siemens SINUMERIK 840D sl Function Manual page 312

F1: Travel to fixed stop
6.2 Detailed description
Parameterization
Machine data
● MD37010 $MA_FIXED_STOP_TORQUE_DEF (default for fixed stop clamping torque)
The value specified in the machine data is effective after activating the function, as long as
no explicit value is programmed using FXST.
● MD36042 $MA_FOC_STANDSTILL_DELAY_TIME (delay time standstill monitoring for
active torque/force limiting)
Permanent activation (FOCON/FOCOF)
Permanent activation of the "Force Control" function after POWER ON or RESET can be set
using the machine data:
MD37080 $MA_FOC_ACTIVATION_MODE, bit 0 and bit 1 (basic setting of the modal force/
torque limiting)
Bit
0
1
If a limiting torque or force is programmed using FXST = <value> before activation, then
this is effective from activation onwards.
If a limiting torque or force was not programmed using FXST = <value> before activation,
then the value specified in the machine data is effective as standard.
MD37010 $MA_FIXED_STOP_TORQUE_DEF (default for fixed stop clamping torque)
Block-related activation (FOC)
The function for the actual block is activated using the FOC command.
Activating the function using a synchronized action takes effect up to the end of the current
part program block.
Priority of FXS before FOC
Activating the "Travel to fixed stop" function FXS has a higher priority than the "Force Control"
function. If "Travel to fixed stop" is active at the same time as "Force Control", then the first is
executed.
Deselecting the "Travel to fixed stop" function FXS cancels the clamping. A "Force Control"
function that is at same time permanently active, remains active.
System variable
Status of the "Force Control" function
The status of the "Force Control" function can be read using system variable $AA_FOC.
312
Value Meaning
0 The "Force Control" function is not active after POWER ON.
1 The "Force Control" function is active after POWER ON.
0 The "Force Control" function is not active after RESET.
1 The "Force Control" function is active after RESET.
Function Manual, 01/2015, 6FC5397-0BP40-5BA2
Basic Functions