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FPΣ 13.2 Troubleshooting Check of input condition 4: Input indicator LEDs are ON Procedure Monitor the input condition using a programming tool. – If the input monitored is OFF, there is probably an abnormality with the input unit. Please contact your dealer. – If the input monitored is ON, check the leakage current at the input devices (e.g. two-wire type sensor) and check the program again, referring to the following: Check for the duplicated use of outputs and for outputs using the high–level instruction. Check the program flow when a control instruction such as MC or JP is used. 13-9
