Siemens SINUMERIK 840Di Function Manual page 103

Maximum number of protection areas
The maximum definable number of machine- and channel-related protection zones is set via:
MD18190 $MM_NUM_PROTECT_AREA_NCK
(Number of files for machine-related protection zones)
MD28200 $MM_NUM_PROTECT_AREA_CHAN
(Number of files for channel-specific protection zones)
Absolute and relative protection zones
The coordinates of a protection zone must always be programmed as absolute values with
respect to the reference point of the protection zone. When the protection zone is activated
via the part program it is possible to apply a relative offset to the reference point of the
protection zone.
Examples
Below are a few examples of protection zones
• Toolrelated protection zone
• Workpiece-related protection zone
• 3-dimensional protection zone
• Relative protection zone
Fig. 2-10
Axis Monitoring, Protection Zones (A3)
Function Manual, 08/2005 Edition, 6FC5397-0BP10-0BA0
Example of application on turning machine
Detailed Description
2.4 Protection zones
2-31