0x009B
PLC Setup Error
Omron · CJ-series CJ2 CPU Unit
What does 0x009B mean?
There is a setting error in the PLC Setup parameters, indicated by A402.10. This signifies that one or more configuration values are invalid, preventing the CPU Unit from operating according to its intended setup.
Common Causes
- One or more settings in the PLC Setup are configured to an invalid value.
Repair Steps & Checklist
Click steps to track your progress.
- 1
Identify the indicated setting with the error in the PLC Setup.
- 2
Change the invalid setting to a valid value using a programming device.
Verified technical data. Last updated: March 2026
Related Faults
Source: Omron CJ-series CJ2 CPU Unit