What should be done when a PLC encounters a fault
Preliminary fault localization (rapidly pinpointing the fault scope) 1.Observe the status of the PLC indicator lights: focus on checking the power light (POWER), running light (RUN), and fault light (ERROR/Fault). If the power light is not on, prioritize troubleshooting the power supply line (voltage, loose wiring); if the running light is off/flashing, it is highly […]
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