Reintegration Following Elimination Of Errors; Automatic Reintegration On Channel Error - Siemens SIMATIC PCS 7 Operating Manual

7.7.3

Reintegration following elimination of errors

Reintegration means:
● Valid process values start to be output again at the output channels of the fail-safe output
modules.
● The F-channel drivers associated with the fail-safe input modules resume the forwarding
of valid process values to the safety program.
● Once a channel error has been eliminated, a channel on a fail-safe module can be
reintegrated automatically or following user acknowledgment. You can use the ACK_NEC
input of an F-channel driver to specify whether or not user acknowledgment is required:
– Value 0: Automatic reintegration without user acknowledgment
– Value 1: Prompt for user acknowledgment for reintegration following error elimination
If passivation was triggered by setting PASS_ON = 1, user acknowledgment will not be required for reintegration.
Note
The ACK_NEC input can only be set to 0 if the process permits automatic reintegration from
a safety-related point of view.
7.7.4

Automatic reintegration on channel error

If the ACK_NEC input is not set and once a channel error has been corrected, the affected
channel is reintegrated automatically (depassivated) as follows:
● With input modules - immediately
● With output modules - within a matter of minutes (due to required test signal injections,
after 2 successful test cycles).
Note
User acknowledgment is always required for reintegration following module errors
(ACK_REQ output set), even if ACK_NEC has not been set. An interconnection of the
ACK_REI input with an automatically generated signal is not permitted.
Compendium Part B - Process Safety (V8.2)
Operating Manual, 07/2016, A5E35031794-AB
7.7 Passivation and reintegration of input/output channels
Configuring the safety program
109