Siemens SIMATIC S7-1200 Safety Programming Manualline - Page 36

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Siemens SIMATIC S7-1200 Safety Programming Manualline

3 Methods for Safety Programming

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.

Automatic reintegration can lead to dangerous situations

If automatic reintegration is permissible for a certain process depends on the risk

assessment.

WARNING

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

Safety Programming Guideline

Entry ID: 109750255,

V1.0,

10/2017