Siemens Simatic S7-1500 - Automatic Reintegration

3 Methods for Safety Programming
Safety Programming Guideline
Entry ID: 109750255, V1.0, 10/2017
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3.11.2 Automatic reintegration
Depending on whether the respective module supports the "RIOforFA" standard
(see Chapter 5), you can implement automatic reintegration in different ways.
WARNING
Automatic reintegration can lead to dangerous situations
If automatic reintegration is permissible for a certain process depends on the risk
assessment.
NOTE
Automatic reintegration concerns F periphery/channel faults (e.g., discrepancy
faults, short-circuits). Communication faults require manual reintegration (see
chapter 3.11.3).
Modules that support "RIOforFA"
For modules that support "RIOforFA", you can parameterize automatic
reintegration either for the entire module or for single channels.
Figure 3-18: Parameterizing automatic reintegration
Modules that do not support "RIOforFA"
For modules that do not support "RIOforFA", program automatic reintegration in the
safety program. To do this, set the "ACK_REQ" tag of the respective F-I/O data
block to "false":
Figure 3-19: Programming automatic reintegration