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Old December 6th, 2017, 03:22 PM   #1
United States

snakes79 is offline
Join Date: Nov 2015
Location: Illinois
Posts: 7
Intermittent fault AB -- L24ER-BB1B

Hello friends. I have a PLC in the field that intermittently faults out. Its a compact logix L24ER-BB1B. The status "OK" light blinks red, according to the customer. He toggled the switch from program mode to remote, to reset the fault, and the machine resumed operation. According to the customer, this has happened 2 or 3 times in a month.


Does toggling the switch erase the controller fault list in the properties window?

Has anybody ever dealt with something like this?

If there was a negative number in a counter or timer, (which I don't think happened) Toggling the reset wouldn't fix the problem, and it would fault out again instantly?


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