Siemens SINUMERIK 840D sl Function Manual page 953
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2.4
Emergency stop acknowledgement
EN 418 standard
The emergency stop control element may only be reset as a result of manual manipulation of
the emergency stop control element. Resetting of the emergency stop control element alone
must not trigger a restart command.
A machine restart must be impossible until all of the actuated emergency stop control
elements have been deliberately reset by hand.
Emergency stop acknowledgement
1. Interface signal:
2. Interface signal:
Figure 2-1
(1)
(2)
(3)
Basic logic functions: Emergency Stop (N2)
Function Manual, 11/2006, 6FC5397-0BP10-2BA0
DB10, DBX56.2 = 1 (Acknowledge emergency stop)
DB11, ... DBX0.7 = 1 (mode group reset)
Note
The two interface signals DB10, DBX56.2 (Acknowledge emergency stop) and DB21, ...
DBX7.7 (Reset) must both remain set at least until the interface signal is reset:
DB10, DBX106.1 (Emergency stop active).
The emergency stop state cannot be reset, only using the interface signal:
DB21, ... DBX7.7 (Reset).
Resetting the emergency stop state
DB10, DBX56.2 (acknowledge emergency stop) is inoperative
DB21, ... DBX7.7 (Reset) is inoperative
DB10, DBX56.2 and DB21, ... DBX7.7 reset DB10, DBX106.1(Emergency stop active)
Detailed description
2.4 Emergency stop acknowledgement
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