ERR
Built-in Memory Clear Error
Mitsubishi Electric · MELSEC iQ-R Motion Controller
What does ERR mean?
This error indicates that a problem was detected during the built-in memory clear process on the Motion CPU module. This suggests an issue with the module's memory hardware or the clear operation itself, preventing successful memory initialization.
Common Causes
- Hardware error detected during built-in memory clear operation
- Failure to successfully clear the built-in memory
Repair Steps & Checklist
Click steps to track your progress.
- 1
Exchange the Motion CPU module.
Verified technical data. Last updated: March 2026
Related Faults
Source: Mitsubishi Electric MELSEC iQ-R Motion Controller