plc 5/40

[Guest kelvin]

We are using PLC 5/40 with hotbackup system by BEM/BCM module,presently we are facing one problem in standby PLC channel 1A & 2A LED assigned for DH+ are slowly flashing as we switchover PLC problem shifts t o anothe PLC ,.what could be reason.

[Guest omega]

The flashing LED means that the PLC is not communicating on those channels. Are you HOT back-up or WARM back-up.

[Guest kelvin]

We are using hot back up system.LED flashing problem is apperaing in secondary processor in primary it is ok ,as we changover the processor problem also shifts to another processor which is now secondary.