ControlLogix Major Faults and Fault Codes
Reference table of ControlLogix major fault codes with their causes and recovery steps, covering power, I/O, arithmetic, and program faults.
Fault Codes
SLC 500 PLC Major Error Codes
SLC 500 error codes as they appear in S:6 and S:54, with the fault description, the likely cause and what clears each one on the processor.
DeviceNet Scanner Error Codes
DeviceNet scanner error codes with their causes and the fix for each. Find the code in the table, then work the action it points at on the scanner.
Connect a button to the OperShelve tag
How the OperShelve tag lets an operator button shelve a PLC alarm, why ProgUnshelve takes precedence, and which controllers set a minor fault.
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