Hai all,

I am having MP277 hmi which is communicating to PLC, It is running ok, but sometimes it went offline, if i power reset then it comes again online work for 3 to 4 hours or sometime with in 10 mins again goes offline, then again if i do power reset it start communicating. Please help me on this issue.

Hello Wizard,

Thanks for your input.

I will do the changes and let u know.

I have one question, if PLC time and HMI time different more than 20 min communication will get lost.

I found there is a time difference in PLC and HMI.

Thanks

VMK