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Occasionally either barcode reader communication will stop.
A faulted module will may have a slightly different flash sequence.
Connection:
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Corrective Action
Do not do this while operating. Opening circuit breaker 20QF4 will also remove power from the ETAP which connects to the safety IO rack in the cabinet. This will stop operation.
Cycle power to the modules: Open then close circuit breaker 20QF4
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