Siemens SIMATIC ET 200iSP Operating Instructions Manual page 331

Properties
Functional check of the ET 200iSP The written value is transferred to the input data according
to the assigned function (see parameters of the Watchdog module). Wiring is not required for
this purpose.
Note
You must integrate the functional check of the Watchdog module in your user program and
evaluate it there.
● Provision of an intrinsically safe 11 V power supply for the shutdown signal of the digital
output modules. See Digital electronics module 4 DO (Page 243)
Note
The intrinsically safe supply for the shutdown signal may only be used within the ET 200iSP
station in which the Watchdog module is located.
The maximum line length for the shutdown signal is 20 m.
● Identification data I&M
Pin assignment
Pin assignment for inserted Watchdog module
Table 14-1 Pin assignment of Watchdog electronic module
Pin assignment and view
ET 200iSP
Operating Instructions, 11/2017, A5E00247483-07
Other modules
14.2 Watchdog module
Remarks
Connections:
Pi: Terminals 1, 3, 5, 7, 9, 11, 13, 15
Mi: Terminals 2, 6, 8, 10, 12, 14, 16
Pi: Intrinsically safe power supply (11 V)
Mi: Chassis ground
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