Protection Zone Violation And Temporary Enabling Of Individual Protection Zones - Siemens SINUMERIK 840D sl Function Manual

A3: Axis Monitoring, Protection Zones
3.3 Protection zones
NC RESET and end of program
The activation status of a protection zone is retained even after an NC RESET and end of
program.
Memory requirements
The memory required for protection zones is parameterized via the following machine data:
● Persistent memory
– MD18190 $MN_MM_NUM_PROTECT_AREA_NCK (number of available machine-
– MD28200 $MC_MM_NUM_PROTECT_AREA_CHAN (number of available channel-
● Dynamic memory
– MD28210 $MC_MM_NUM_PROTECT_AREA_ACTIVE (maximum number of
– MD28212 $MC_MM_NUM_PROTECT_AREA_CONTUR (maximum number of
See also
Definition via part program instruction (Page 135)
Definition as per system variable (Page 138)
3.3.6

Protection zone violation and temporary enabling of individual protection zones

Temporary enabling of protection zones
If a protection zone violation occurs when starting or during a traversing motion, under certain
circumstances, the protection zone can be enabled, i.e. for temporary traversing. In
AUTOMATIC and MDA mode as well as in JOG mode, the temporary enabling of protection
zones is performed via operator actions.
A temporary enable is only possible for workpiece-related protection zones.
Tool-related protection zones must either be deactivated in the part program or via the NC/
PLC interface in the "Preactivated" state.
Terminating the temporary enabling
Temporary enabling of a protection zone is terminated after the following events:
● NC RESET
● AUTOMATIC or MDA mode: The end of the block is outside the protection zone
● JOG mode: The end of the traversing motion is outside the protection zone
● The protection zone is activated
144
defined protection zones)
defined protection zones)
protection zones that can be activated simultaneously in the channel)
definable contour elements per protection zone)
Function Manual, 01/2015, 6FC5397-0BP40-5BA2
Basic Functions