Siemens SINUMERIK 840D sl Function Manual page 112

A3: Axis Monitoring, Protection Zones
3.2 Axis monitoring functions
Activation of working area limits
The working area limits of a working area limitation group are activated in the part program
with the command:
WALCSn (activation of the working area limits of group n, where n = 1, 2, ... )
Deactivation of working area limits
The working area limits of a working area limitation group are deactivated in the part program
with the command:
WALCS0 (deactivation of the working area limits active in the channel)
Change working area limits
The working area limits can be changed at any time via the system variables mentioned above.
Changes take effect with the next activation of the working area limitation group (WALCSn).
Data storage
The system variables of the working area limits are stored retentively in the static memory of
the NC.
Note
For the storage of the limiting values for the linear axes, the default setting is considered for
the system of units (MD10240 $MN_SCALING_SYSTEM_IS_METRIC).
Data backup
The system variables of the working area limits can be backed up in separate files:
Backup file
_N_CHx_WAL
_N_COMPLETE_WAL
Note
The system variables of the working area limits are part of the "_N_INITIAL_INI" file.
Behavior in JOG mode
Initial situation:
● In JOG mode, several geometry axes traverse simultaneously (e.g. using several
handwheels)
● A rotating frame is active between the basic coordinate system (BCS) and the reference
coordinate system of the working area limitation (WCS or SZS)
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For the backup of:
Values of the system variables for the channel x.
Values of the system variables for all channels.
Function Manual, 01/2015, 6FC5397-0BP40-5BA2
Basic Functions