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-   -   Issue with micrlogix 1400 (http://www.plctalk.net/qanda/showthread.php?t=113586)

rejoe.koshy January 3rd, 2018 02:59 AM

Issue with micrlogix 1400
 
Hey guys,
I am facing a weird issue with a micrologix 1400 series PLC installed in my facility.The IP address of the controller is set to default abruptly & as a result its communication with HMIs collapses.The PLC which is otherwise healthy runs for few weeks before IP settings are wiped out & I have to reenter the address for it to work..

What could be the issue? Could this be a hardware fault?

tarik1978 January 3rd, 2018 03:12 AM

It could be that DHCP or BOOT UP are still enabled see bellow thread:
http://www.plctalk.net/qanda/showthread.php?t=94483

rejoe.koshy January 3rd, 2018 04:03 AM

Quote:

Originally Posted by tarik1978 (Post 763812)
It could be that DHCP or BOOT UP are still enabled see bellow thread:
http://www.plctalk.net/qanda/showthread.php?t=94483

I have set the IP using the keypad , so I guess BOOTP might not be the cause.Futhermore, BOOTP issues surface with power recycling , but this problem occurs abruptly.

Saffa January 3rd, 2018 11:59 AM

can you post a screenshot of your Ethernet channel configuration please?


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