The distributed safety library

These blocks have been validated by the TUV (Technischer Uberwachungs-Verein) and are listed in the annex of the certification report furnished by the manufacturer. 

Communication between the standard user program and the safety program 

The exchange of data between standard and safety programs in the F-CPU is possible by means of bit memory or by accessing the process inpnt and ontpnt image. 

Fignre 10.31 shows the different types of data transfer from the safety program to the standard user program (and vice versa). The different types of transfer can be summarized as follows  

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