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How to see ERR codes on a Modicon M221
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Posted: 2025-06-1907:49 AM
How to see ERR codes on a Modicon M221
I am getting an ERR Code on my M221 and when I unplug the CAT5 then plug it back in the ERR goes away. the ERR comes when we loss then regain control power. I can not seem to figure out how to pull up the ERR codes.
I am not sure how to look up the ERR Codes, not sure how to read the System Words,