Standardizing Actuator Control - Siemens SIMATIC S7-1200 Safety Programming Manualline

3 Methods for Safety Programming
3.5.2

Standardizing actuator control

Recommendation
Create a separate function block for each actuator type (e.g., contactors, valves,
drives, etc.) that combines actuator control and the necessary auxiliary functions.
Use this actuator block for other actuators of the same type.
Create F-data types for complex actuators.
Auxiliary functions for a safe actuator include, for example:

Feedback circuit monitoring

Error acknowledgment

Edge evaluation

Time functions

Functional switching

Provision of diagnostic information
Figure 3-7: Standardizing actuator control
Safety Programming Guideline
Entry ID: 109750255, V1.0, 10/2017
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