0x80F4

Memory Card Transfer Error

Omron · CJ-series CJ2 CPU Unit

What does 0x80F4 mean?

The CPU Unit failed to correctly read the contents of the Memory Card when power was turned ON, indicated by A401.03. This can occur if required files for automatic transfer are missing or if a program including network symbols was transferred to an incompatible CPU version (CJ2H-CPU6 unit version 1.5 or earlier, or CJ2M-CPU1 unit version 2.1 or earlier).

Common Causes

  • Required files for the automatic transfer function are not available on the Memory Card.
  • A user program (OBJ file) that includes network symbols was attempted to be transferred with power ON to CJ2H-CPU6 (unit version 1.5 or earlier) or CJ2M-CPU1 (unit version 2.1 or earlier).

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Verify the Memory Card contains all files required for automatic transfer.

  2. 2

    If applicable to older CJ2H-CPU6 or CJ2M-CPU1 models, transfer a user program (OBJ file) that does not include network symbols.

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Verified technical data. Last updated: March 2026

Related Faults

Source: Omron CJ-series CJ2 CPU Unit