Siemens SINUMERIK 840D sl Function Manual page 1612

Z1: NC/PLC interface signals
19.6 Mode group, channel, program operation, reset response (K1)
DB21, ...
DBX7.2 NC Stop at block limit
Edge evaluation: No
Signal state 1 The current NC program is stopped after the current part program block has been completely pro‐
cessed. Otherwise, as for DB21, ... DBX7.3 (NC Stop).
Signal state 0 No effect.
Corresponding to ... DB21, ... DBX7.3 (NC Stop)
DB21, ... DBX7.4 (NC Stop axes plus spindles)
DB21, ... DBX35.2 (program status stopped)
DB21, ... DBX35.6 (channel status interrupted)
DB21, ...
DBX7.3 NC Stop
Edge evaluation: no
Signal state 1 AUTOMATIC or MDI mode:
Processing of the part program active in the channel is stopped.
The axes (not spindles) are brought to a standstill within the assigned acceleration parameters.
● Program status: Stopped
● Channel status: Interrupted
JOG mode:
In JOG mode, incompletely traversed incremental paths (INC...) are retracted at the next NC Start.
Note
The signal must be present for at least one PLC cycle (OB1).
Signal state 0 No effect.
Signal irrelevant
● Program status: Aborted
for ...
● Channel status: Reset
Special cases, ● If data is transferred to the NCK after NC Stop (e.g. tool offset), the data is cleared at the next NC
errors, ......
Corresponding to ... DB21, ... DBX7.2 (NC Stop at block limit)
DB21, ... DBX7.4 (NC Stop axes plus spindles)
DB21, ... DBX35.2 (program status stopped)
DB21, ... DBX35.6 (channel status interrupted)
DB21, ...
DBX7.4 NC Stop axes plus spindles
Edge evaluation: no
See DB21, ... DBX7.3 (NC Stop).
In addition, the spindles of the channel are stopped.
1612
Signal(s) updated: Cyclically
Signal(s) updated: Cyclically
Start.
Signal(s) updated: Cyclically
Function Manual, 01/2015, 6FC5397-0BP40-5BA2
Basic Functions