MULTI CPU DOWN
Mitsubishi Electric · Q-series Programmable Controller
What does 7000 mean?
This error code signifies a stop error originating from QCPU No. 1 in a multiple CPU system. When this occurs, other QCPUs/motion CPUs (No. 2 to 4) also experience a 'MULTI CPU DOWN' error, leading to the complete halt of the entire multiple CPU system. This fault indicates that the primary CPU has encountered a critical issue, preventing further execution across all involved CPUs.
Common Causes
- A stop error has occurred at QCPU No. 1, which functions as the host CPU in the multiple CPU system.
Repair Steps & Checklist
Click steps to track your progress.
- 1
Utilize the PLC diagnostics tool within GX Works2 to confirm the precise error cause for QCPU No. 1.
- 2
Address and remove the identified error cause on QCPU No. 1.
- 3
Reset QCPU No. 1 or cycle the power of the programmable controller; this action simultaneously resets and restores all QCPUs within the entire multiple CPU system.