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Dear Micrologix Guy, Thank you for your timely response; we'll keep this tip in mind for future reference. ------------------------------ Nugroho ------------------------------

I have a defect that appears on Micrologix 1500 PLCs on a regular basis. This problem is described as Expansion I/O Hardware error, which might cause the controller to be unable to interface with an expansion I/O Module. This issue caused the sequence to stop. Any thoughts on could be share? Thanks ...