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Why is the I/O LED on CompactLogix Controller L32-E flashing Green? This PLC setup currently has the Controller, the 24V DC power supply and 5 Digital I/O cards tied up together on a DIN Rail with proper grounding as suggested.
I tried to look up for what the flashing green LED could mean and documentation says that one or more I/O is not responding? .. I have powered up this PLC without actual I/O wires connected to the Digital I/O Cards. At powerup, now it has the I/O LED flashing green. I wonder if it has to do anything with actual I/O wires not being hooked up these I/O cards or if there's something wrong with one or more backplane connections at the I/O cards or if its an I/O card gone bad? What could be the most likely reason? How can I trouble-shoot this problem?
Please advise.
I tried to look up for what the flashing green LED could mean and documentation says that one or more I/O is not responding? .. I have powered up this PLC without actual I/O wires connected to the Digital I/O Cards. At powerup, now it has the I/O LED flashing green. I wonder if it has to do anything with actual I/O wires not being hooked up these I/O cards or if there's something wrong with one or more backplane connections at the I/O cards or if its an I/O card gone bad? What could be the most likely reason? How can I trouble-shoot this problem?
Please advise.