Siemens SIMATIC S7-1200 - 1 Introducing the powerful and flexible S7-1200; 1.1 Introducing the S7-1200 PLC

3 Methods for Safety Programming
Safety Programming Guideline
Entry ID: 109750255, V1.0, 10/2017
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 Siemens AG 2017 All rights reserved
Figure 3-1: Example of a program structure
Note
The structure shown here is an example. Depending on the size and complexity
of the safety program, you can also choose a different structure. In smaller
applications, it would, for example, also be possible to implement the logic and
actuator control in a shared function block.