PM866 change over to stand by system due to some fault.
2 Days ago My PM866 Processor(Redundant) unit was change over to Standby Unit. After power recycle it was normal. But Why it was happen? Checked manual. As per manual '' Check controller log". Actually I am new in ABB PLC. Where I can find "Controller Log"?
Kindly find the attach file. I am using this Software.
Some area showing Red Triangle and Some area are Yellow. Is it ok? Or need rectification?