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I am working with a GP2501 panel that appears to have it's programming intact. What I need to be able to do is identify the I/O addresses it is writing to and reading from. Is there a way to do this that doesn't require software and cable to connect to the panel? We are having to reverse engineer a program and this would be very helpful. One other thing there is an ethernet card in the rack. There are no external connections from the card and I was wondering if it was needed by the GP?

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