Siemens SINUMERIK 840Di Function Manual page 325

Detailed Description
2.1 General functionality
2.1
2.1.1 Functional sequence, programming, parameterization
Programming
Travel to fixed stop is selected or deselected with the following commands:
FXS[Machine axis identifier]=1 (selected)
FXS[Machine axis identifier]=0 (deselected)
The commands are modal.
The clamp torque is set with the command:
FXST[Machine axis identifier] = <torque>.
It is entered in % of the static torque for feed spindle drives:
(MD1118 MOTOR_STANDSTILL_CURRENT)
or in % of motor torque for main spindle drives:
(MD1103 MOTOR_NOMINAL_POWER).
The command is used for setting the width of the fixed stop monitoring window.
FXSW[machine axis identifier] = <monitoring window>
The unit is dependent on the default setting: mm, inch or degrees.
Channel axis identifier
Instead of the machine axis identifiers, it is also possible to use channel axis identifiers if the
channel axis identifiers are assigned exactly to one machine axis.
Restrictions:
Channel identifiers may not be used (option disabled) for machine axes which have an active
transformation or frame.
In cases where the machine axis is acting as a coupled axis (e.g. slave axis), the system
disables programming of channel axis identifiers and alarm 14092 "Wrong axis type" is
displayed.
Travel to Fixed Stop (F1)
Function Manual, 08/2005 Edition, 6FC5397-0BP10-0BA0
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