SIMATIC S7 F Systems supports configuration using functions for:

• Comparison of safety-related 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 SIMATIC 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.

Notes:

• Depending on the software requirements of the SIMATIC PCS 7 version, SIMATIC S7 F Systems can be operated under the following operating systems:
  • On the engineering station under Windows 7 SP1 64-bit (Professional, Enterprise, Ultimate) or Windows Server 2008 R2 SP1 Standard 64-bit
  • On the operator station (S7 F Systems HMI) under Windows 7 SP1 32-bit (Enterprise, Ultimate), Windows 7 SP1 64-bit (Professional, Enterprise, Ultimate), Windows 10 Enterprise 2015 LTSB 64-bit, Windows Server 2008 R2 SP1 Standard 64-bit or Windows Server 2012 R2 Standard 64-bit
• The SIMATIC S7 F Systems RT license for processing safety-related user programs is already integrated in the "AS bundles" of the safety-related automation systems. The article number for ordering further licenses can be found in the section "Automation systems" under "Modular AS 410 systems", "Safety-related automation systems" and under "Complementary S7‑400 systems".