Z1: NC/PLC interface signals
19.6 Mode group, channel, program operation, reset response
Basic Functions
Function Manual, 09/2011, 6FC5397-0BP40-2BA0
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Signal state 0 or
edge change
1 → 0
No effect.
Special cases,
errors, ......
The main program level cannot be aborted with this IS, only with IS "Reset".
DB21, ...
DBX7.0 NC START disable
Edge evaluation: no Signal(s) updated: Cyclic
Signal state 1 or
edge change
0 → 1
The NC START disable prevents a part program from being started with NC START signal DB21, ...
DBX7.1 (NC START) == 1.
Signal state 0 or
edge change
1 → 0
NC START disable is not active.
Special cases,
errors, ......
The start of a part program selected in the channel by part program command START in another
channel (program coordination) is not prevented by the interface signal:
DB21, ... DBX7.0 (NC start disable) == 1.
Corresponding to ... DB21, ... DBX7.1 (NC START)
DB21, ...
DBX7.1 NC START
Edge evaluation: yes Signal(s) updated: Cyclic
Signal state 1 or
edge change
0 → 1
AUTOMATIC mode: The selected NC program is started or continued, or the auxiliary functions that
were saved during the program interruption are output.
If data are transferred from the PLC to the NC during program status "Program interrupted," then
these data are immediately cleared at NC start.
Operating mode MDA:
The entered block information or part program blocks are released for execution.
Signal state 0 or
edge change
1 → 0
No effect.
Corresponding to ... DB21, ... DBX7.0 (NC start disable)
DB21, ...
DBX7.2 NC STOP at block limit
Edge evaluation: no Signal(s) updated: Cyclic
Signal state 1 or
edge change
0 → 1
The current NC program is stopped after the current part program block has been completely
processed. Otherwise, as for DB21, ... DBX7.3 (NC stop).
DB21, ...
DBX6.4 Program level abort
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