CPU Down Error

What does 1005 mean?

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.

• 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).

Click steps to track your progress.

1. 1

   Implement noise reduction measures for the control system environment.

2. 2

   Reset the CPU module and attempt to RUN it again.

3. 3

   If the same error is displayed again after resetting, diagnose for a CPU module hardware fault.

4. 4

   Before performing boot operation by the parameter, select 'Clear program memory' to clear the program memory.