Using a Quantum 984 HSBY System

Hot Standby Status Register for Configuration Extension

Status Register for Configuration extension

Note: Bits 1 and 2 are used only in conjunction with a configuration extension.

This PLC in OFFLINE mode = 0 1

This PLC running in primary mode = 1 0

This PLC running in standby mode = 1 1

The other PLC in OFFLINE mode = 0 1

The other PLC running in primary mode = 1 0

The other PLC running in standby mode = 1 1

PLCs have matching logic = 0

PLCs do not have matching logic = 1

This PLC’s switch sat to A = 0

This PLC’s switch sat to B = 1

The CHS interface is healthy = 0

An interface error has been detected = 1

Hot standby capability has not been activated = 0

Hot standby is active = 1

840 USE 106 00 January 2003

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Schneider Electric 840 USE 106 0 manual Hot Standby Status Register for Configuration Extension