Mitsubishi Electric · MELSEC iQ-R I/O Module
An error was detected on the external power supply connected to the I/O module. This could stem from issues with connected devices, wiring, incorrect voltage levels, or an improper power-on sequence relative to the module's own power supply.
Click steps to track your progress.
Review and adjust all connected devices, wiring, and the voltage level provided by the external power supply.
Ensure the external power supply is powered on simultaneously with the module's own power supply to maintain proper sequencing.