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Old December 7th, 2017, 12:12 PM   #6
Ken Roach
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Location: Seattle, WA
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The ControlLogix/CompactLogix OS considers overflow and divide by zero to be minor faults, which will not stop the user program.

An out-of-bounds array index will definitely fault the controller, and that's the sort of thing that's very typically reset during an initialization routine.

I agree that OP needs to go online and look at the fault logs. I admit I don't remember if they are cleared by a keyswitch cycle or power cycle.
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