Siemens SINUMERIK 840D sl Function Manual page 107

Data storage and security
Data storage
The values of the system variables for the definition of the "working area limitations in
WKS/ENS" are stored in the static NC memory.
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 values of the system variables can be saved in specific backup files:
Backup file
_N_CHx_WAL
_N_COMPLETE_WAL
Note
The values of the system variables for the definition of the "working area limitations in
WKS/ENS" are also component of the file "_N_INITIAL_INI".
Limitations/secondary conditions
Rotating frame active
If a rotating frame is active, all geometry axes must have been referenced for the activation
of the "working area limitation in WKS/ENS".
Effects
JOG mode
If in the JOG-mode several geometry axes are traversed simultaneously (e.g., using several
handwheels) and a rotating frame is active between the base coordinate system and the
reference coordinate system of the working area limitation (WKS or ENS), then a response
of the monitoring leads to the fact that the movements of the involved geometry axes are
continued in a straight line and stopped at the working area limits.
Basic logic functions: Axis monitoring, protection zones (A3)
Function Manual, 11/2006, 6FC5397-0BP10-2BA0
For the backup of:
Values of the system variables for the channel x.
Values of the system variables for all channels.
Detailed description
2.1 Axis monitoring
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