Siemens SIMATIC ET 200iSP Operating Instructions Manual page 253

Figure 12-4
Note
You can use the "Deactivate shutdown signal" parameter in HW Config only for DO modules
with a "*" after the order number 6ES7....
Actuator disconnection with 11 V supply from the Watchdog module
The Watchdog module can supply 2 mA current consumption each for up to 16 digital output
modules via one intrinsically safe contact K1 (e.g. Category 2G relay for installation in the Zone
1 potentially explosive area).
You do this by connecting the terminals of the intrinsically safe contact to the Pi terminal on
the Watchdog module and terminals 4/8 (+) of the digital output module.
ET 200iSP
Operating Instructions, 11/2017, A5E00247483-07
Actuator disconnection via intrinsically safe shutdown signal for SHUT DOWN "L" output
modules
Digital electronic modules
12.2 Digital electronics module 4 DO
253