Siemens SINUMERIK 840D sl Function Manual page 1630

Z1: NC/PLC interface signals
19.8 Emergency stop (N2)
DB10
DBX56.1 Emergency stop
Signal state 0 or The NC is not in the emergency stop state.
edge change
The emergency stop state is (still) active but can be reset using the interface signals:
1 → 0
DB10 DBX56.2 (acknowledge emergency stop)
and
DB11 DBX0.7 (mode group reset)
Corresponding to ... DB10 DBX56.2 (acknowledge emergency stop)
DB10 DBX106.1 (emergency stop active)
DB10
DBX56.2 Acknowledge emergency stop
Edge evaluation: No
Signal state 1 or The emergency stop state is only reset if the interface signal:
edge change DB10 DBX56.2 (acknowledge emergency stop)
0 → 1 is set followed by the interface signal:
DB11, ... DBX0.7 (mode group reset).
It must be noted that IS "Acknowledge emergency stop" and IS "Reset" must be set (together) for a
long enough period so that the interface signal:
DB10 DBX106.1 (emergency stop active)
was reset.
Resetting the emergency stop state has the following effects:
● The controller enable is switched in.
● Follow-up mode is canceled for all axes and position control mode resumed.
● DB31, ... DBX61.5 set (position controller active).
● DB11, ... DBX6.3 set (mode group ready).
● DB10 DBX106.1 reset (emergency stop active).
● Alarm 3000 is cleared.
● Part program processing is aborted for all channels.
1630
Signal(s) updated: Cyclically
Function Manual, 01/2015, 6FC5397-0BP40-5BA2
Basic Functions