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1005
CPU Down Error
Mitsubishi Electric · MELSEC System Q/L Series
¿Qué significa 1005 ?
The CPU module has experienced a runaway condition or failure, potentially due to electrical noise or a hardware fault. For Qn(H), QnPH, and QnPRH models, this error can also occur if a boot operation was performed without formatting the program memory.
Causas comunes
- Runaway or failure of CPU module.
- Malfunctioning due to noise or other external reasons.
- Hardware fault within the CPU module.
- Boot operation was performed in the transfer destination without formatting program memory (Qn(H), QnPH, QnPRH models).
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.
- 4
Before performing boot operation by the parameter, select 'Clear program memory' to clear the program memory.
Datos técnicos verificados. Última actualización: March 2026
Fallas relacionadas
Fuente: Mitsubishi Electric MELSEC System Q/L Series