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. 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).

Browse all codes in this manual (34)
Verified technical data. Last updated: March 2026

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Source: Omron CJ-series CJ2 CPU Unit