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07.97 12 Functional Descriptions
12.32.12 Collision alarms
12.32.12 Collision alarms
When two protection zones collide, the axis-specific alarm ”Protection zone collision
plus/minus” is output for all the motion axes of the protection zones specifying the direction.
After that, traversal of the motion axes in the direction of the collision is disabled until the axis-
specific collision alarms have been acknowledged (retract from protection zones).
To retract in the opposite direction it is possible to traverse with the velocity resulting from the
set velocity and the minimum reduction factor.
The collision of protection zones is displayed for each protection zone in the PLC interface
DB48.
Axis
-specific alarms
Protection zone collision plus: Alarm 1368*
Protection zone collision minus: Alarm 1372*
PLC interface
Protection zone collision: DB48, DW5 and DW7, bit 0 - bit 15
12.32.13 Deselection of collision of monitoring of a protection zone
Via PLC interface DB48 it is possible to deactivate monitoring of a protection zone. For safety
reasons, the interface signal is LOW active.
PLC interface
Collision monitoring OFF: DB48, DW4 and DW6, bits 0 - bit 15 in each case.
© Siemens AG 1992 All Rights Reserved 6FC5197- AA50
12–323
SINUMERIK 840C (IA)
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