A295.15

UM Overflow Error

Omron · CJ-series CJ2 CPU Unit

What does A295.15 mean?

The user program memory (UM) has been exceeded, indicating that the program is too large for the allocated memory space. This prevents the PLC from loading or executing the full program, contributing to a fatal program error (0x80F0).

Common Causes

  • The program size exceeds the last available address in the user program memory (UM).

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Reduce program size if possible to fit within UM limits.

  2. 2

    Transfer the program again to the CPU Unit.

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Verified technical data. Last updated: March 2026

Related Faults

Source: Omron CJ-series CJ2 CPU Unit