Programming
Fail-Safe Systems
5-4 A5E00085588-03
5.2 Creating Safety Programs
5.2.1 Creating a Safety Program - Basic Procedure
Prerequisites
• The project structure must be created in SIMATIC Manager. The Safety
Program must be assigned to an F-capable CPU (e.g. a CPU 417- 4H).
• A chart folder must be created for CFC under the S7 program.
• The hardware components of the project and, in particular, the CPU and the F-
signal modules must be configured and assigned parameters.
Basic Procedure
The following basic procedure applies when creating a Safety Program:
Insert F-function blocks
Parameterize and interconnect F-function blocks
Insert CFC charts
Compile Safety Program
Load Safety Program
Test Safety Program
Change Safety
Program
On-site acceptance of the Safety Program
e.g. by an expert
OK?
No
Yes
Insert run-time groups (applies to CFC V5.2)
Define program structure
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