Types Of Protection Zone - Siemens SINUMERIK 840D sl Function Manual

A3: Axis Monitoring, Protection Zones
3.3 Protection zones
Orientation
The orientation of the protection zones is determined by the plane definition (abscissa/
ordinate), in which the contour is described, and the axis perpendicular to the contour (vertical
axis).
The orientation of the protection zones must be the same for the tool and workpiecerelated
protection zones.
3.3.2

Types of protection zone

Machine-defined and channel-defined protection zones
● Machine-defined protection zone
Data for machine-related protection zones are defined once in the control. These protection
zones can be activated by all channels.
● Channel-defined protection zones
Data for channel-related protection zones are defined in a channel. These protection zones
can be activated only by this channel.
Example: Doubleslide turning machine
● The toolrelated protection zones are assigned to channel 1 or 2.
● The workpiecerelated protection zones are assigned to the machine.
● The coordinate system must be identical for both channels.
Maximum number of protection areas
The maximum definable number of machine- and channel-related protection zones is set via:
MD18190 $MN_MM_NUM_PROTECT_AREA_NCK (Number of files for machine-related
protection zones)
MD28200 $MC_MM_NUM_PROTECT_AREA_CHAN (Number of files for channel-specific
protection zones)
Coordinates
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.
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Function Manual, 01/2015, 6FC5397-0BP40-5BA2
Basic Functions