After creating a safety program and system configuration, you must carry out a complete function test in accordance with your automation task. For changes made to a safety program which has already undergone a complete function test, only the changes need to be tested, if a proper impact analysis was done before.

Safety application program, safety I/O configuration, etc. have to be verified and saved for project data report and archive. The system acceptance test shall follow safety function test. After you finish configuring the hardware and assigning parameters for the safety CPU and safety I/O modules, you can perform an acceptance test. During the system acceptance test, all relevant application-specific standards must be adhered.