Mitsubishi Electric · MELSEC System Q/L Series
The sequence program storing program memory within the CPU module is faulty. This diagnostic occurs during power ON, after a reset, or upon execution of an END instruction, indicating an issue with program integrity.
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Implement noise reduction measures for the control system environment.
Reset the CPU module and attempt to RUN it again.
If the same error is displayed again after resetting, diagnose for a CPU module hardware fault.