Testing A Safety Program Offline With S7-Plcsim - Siemens SIMATIC S7 F Manual

Programming
5.4.11

Testing a Safety Program Offline with S7-PLCSim

It is not always possible to test Safety Programs in a real system. The PLCSim
software package is intended to help you test Safety Programs by simulating a
CPU on the PC/programming device.
5.4.11.1 Using PLCSim V5.0 (and below)
Prerequisite: Copying the Project
It is not possible to carry out the offline test with the original project. The project
must be copied, and the simulation can only be carried out using this copied
project.
The changes can then be transferred to the original project and with the safety
mode deactivated, transferred to the CPU using "Download Changes".
To make sure that all the changes made in the test project have been made
correctly in the original project as well, you can use the chart comparison function
in the F add-on package to compare the original project with the simulation project
(in SIMATIC Manager via Options - Edit Safety Program, see Comparing Safety
Programs). Depending on the editing sequence, it may be that differences are
displayed in parameters that are automatically assigned (e.g. F_PLK/SIG_I etc.).
These differences can be ignored.
If PLCSim is used with the original project, it is no longer possible to
download in RUN.
Starting Simulation
Proceed as follows:
1. Select the program folder (e.g. S7 Program) in SIMATIC Manager.
2. Choose the Options > Edit Safety Program menu command.
Fail-Safe Systems
A5E00085588-03
5-57