0x4101 to 0x42FF
FAL(006) Error
Omron · CJ-series CJ2 CPU Unit
What does 0x4101 to 0x42FF mean?
The Function Advance Logic (FAL) instruction number 006 has been executed in the program. This indicates a user-defined error condition has been met. The specific FAL number (001 to 511) is stored in Auxiliary Area A400 (leftmost digit 4, rightmost 3 digits 101 to 2FF hex) and flags A360 to A391.
Common Causes
- User-defined error condition detected and triggered by the FAL(006) instruction in the PLC program.
Repair Steps & Checklist
Click steps to track your progress.
- 1
Correct the PLC program logic according to the specific cause indicated by the FAL number stored in Auxiliary Area A400 and flags A360 to A391 (set by the user).
Verified technical data. Last updated: March 2026
Related Faults
Source: Omron CJ-series CJ2 CPU Unit