Rockwell Automation AADvance Controller Safety Manual - Manual (Page 52)

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3-18 Document: 553630
ICSTT-RM446K-EN-P Issue: 10 _C
Safety Manual (AADvance Controller)
Configuring SNCP Safety Network
The SNCP protocol can be configured in the AADvance controller to provide
a safety network; refer to the AADvance Configuration Guide (Doc No.
553633) for detailed configuration procedures.
For SNCP bindings to be used in a Simplex Network configuration, SIL
3 can be achieved but the following conditions must be met:
 For de-energize to trip configurations, associated SIF outputs shall be
configured to shutdown on loss of communications.
 For energize to trip configurations link failures shall be repaired within the
MTTR.
Note: Additional measures must be considered for ensuring that the process
remains within its safe operating parameters during the repair time; these
additional measures must be defined in the Operating and Maintenance
procedures written for maintaining the SIF for the specific Plant or Process.