6.3.9 Initiate a forced checking procedure (test stop)
Basic procedure
Functions and switch-off signal paths must be regularly tested using the forced checking
procedure (test stop). The forced checking procedure should be performed each time that the
control system runs up and must, however, be performed at least once a year.
The forced checking procedure is not performed in the safety program but in the standard PLC
program. This means that you insert the affected program code in your PLC user program in
order to trigger the forced check procedure during run-up of the controller.
6.3.10 Programming the wiring test
Basic procedure
You must program a wiring test in order that your F-I/O devices can be correctly addressed. For
the wiring test, use a tag QBAD of the F-I/O DB of the corresponding F-I/O. You can perform
a wiring test jointly for all F-I/O modules of an F-runtime group.
Therefore, configure the F-I/O in such a way that the modules themselves perform the test.
Further information
Further information may be found in the SIMATIC Safety manual.
Commissioning and configuring
6.3 Generating a safety program
Safety Integrated (with SINAMICS S120)
Commissioning Manual, 02/2020, A5E46305916B AB 241
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