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Why doesn't IO Scanner seem to work with my Unity Hot Standby PLC in a 'Stand-alone' configuration?

This is quite possibly due to the fact that the 'Stand-alone' PLC is in RUN OFFLINE mode. For all aspects of PLC to function properly, make sure that the PLC is in RUN PRIMARY mode. In order to attain Run Standby, at minimum a CPS, CPU and CRP are required.

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