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1040
CPU Unit Down Error (Built-in I/O)
Mitsubishi Electric · MELSEC System Q/L Series
¿Qué significa 1040 ?
The CPU module, specifically its built-in I/O, has experienced a runaway condition or failure. This can be caused by electrical noise interference or a fundamental hardware fault within the CPU module. The condition indicates that the CPU is not operating correctly.
Causas comunes
- Runaway or failure of CPU module (built-in I/O).
- Malfunctioning due to noise or other external reasons.
- Hardware fault within the CPU module.
Pasos de reparación & Lista de verificación
Haga clic en los pasos para seguir su progreso.
- 1
Implement noise reduction measures for the control system environment.
- 2
Reset the CPU module and attempt to RUN it again.
- 3
If the same error is displayed again after resetting, diagnose for a CPU module hardware fault.
Datos técnicos verificados. Última actualización: March 2026
Fallas relacionadas
Fuente: Mitsubishi Electric MELSEC System Q/L Series