Group Passivation - Siemens SIMATIC PCS 7 Operating Manual

Configuring the safety program
7.7 Passivation and reintegration of input/output channels
7.7.2

Group passivation

If, during passivation of an F-I/O or a channel of an F-I/O, you wish to activate passivation of
other F-I/Os, you can use the PASS_OUT output/PASS_ON input to perform group
passivation of related F-I/Os.
Group passivation via PASS_OUT/PASS_ON can, for example, be used to force
simultaneous reintegration of all F-I/Os after the F-system has been started up.
To enable group passivation, you must link all PASS_OUT outputs of the F-channel drivers
in this group with F_OR4 F-blocks, and interconnect the OUT output result of F_OR4 with all
PASS_ON inputs of the F-channel drivers in this group.
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Compendium Part B - Process Safety (V8.2)
Operating Manual, 07/2016, A5E35031794-AB