Summary of Mitsubishi PLC Indicator Light Meanings: How to Diagnose PLC Failures Using Indicator Lights
1. Meaning of Mitsubishi PLC Indicator Lights ① Input Indicator Light The row of indicator lights marked with “IN” are the input signal indicator lights, as shown in Figure 3-1-3 “⑤”. Each indicator light corresponds to one input signal of the PLC. When there is a signal at the corresponding input terminal, the indicator light … Read more