S7 F Systems supports configuration by means of functions for

• Comparison of safety-oriented F programs
• Recognition of changes in the F program using the checksum
• Separation of safety-related and standard functions

Access to the F functions can be password-protected.

The F-block library integrated in S7 F Systems contains predefined function blocks for generation of safety-related applications with the CFC or the SIMATIC Safety Matrix based on it. The certified F blocks are extremely robust and intercept programming errors such as division by zero or out-of-range values. They avoid the need for diverse programming tasks for detecting and reacting to errors.