Beckhoff TwinSAFE logic FB

Function blocks
52 Function blocks for TwinSAFE logic components
If the EDM signal of the ESTOP function block is not evaluated, the time when the change from FALSE to
TRUE may occur at the Restart input is not monitored. This may also be the case before the emergency
stop event. In this case the FB output is enabled when the Restart input changes from TRUE to FALSE.
NOTE
EDM signal
If the EDM input of the ESTOP function block does not prevent the device from being switched on again in
the event of a fault, the user must take further measures to prevent this. (see also TwinSAFE Application
Guide, e.g. chapter 2.3).
RESTART
Estop-In
EStopOut
FB State
State 1
State 3
State 6
State 1