Testing The Safety Program; Safety Program Disable If Change To Failsafe Outputs - Siemens SIMATIC S7 F Manual

Programming
5.4.10

Testing the Safety Program

After compilation and downloading, you can test the program. You can test Safety
Programs by switching to test mode in CFC using the Test > Test Mode menu
command. In test mode you are connected to the automation system (CPU) online.
Rules for Testing
Safety Note – Safety Program disable if change to failsafe outputs
!
You can observe the Safety Programs in CFC test mode and change non-
interconnected inputs of fail-safe blocks. Online changes to fail-safe outputs and
automatically assigned I/Os are not permitted and result in a Safety Program
disable.
Safety Note – ES changes can change signature
!
When you use the ES, changes to non-safety-related parameters can result in a
change to the overall signature of the offline Safety Program. This means that the
Safety Program might have to be accepted again after the test. To ensure that the
overall signature of the Safety Program remains unchanged, you must undo any
parameter changes by reassigning the original values to the parameters.
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Fail-Safe Systems
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