F00C

Requested function not available

Allen-Bradley · Logix 5000

What does F00C mean?

The function requested is not available on the device or in the current operational mode. This could indicate an incorrect command or an unsupported feature.

Common Causes

  • Requested function is not available

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Verify the Logix 5000 controller firmware version against the project's configured firmware to ensure compatibility with all instructions.

  2. 2

    Inspect the program logic in Studio 5000/RSLogix 5000 to pinpoint the specific instruction or function generating the F00C error and review its parameters and application.

  3. 3

    Check the I/O configuration in Studio 5000/RSLogix 5000 to confirm all referenced modules are present, correctly identified, and support the requested functions.

  4. 4

    Verify the controller's current operating mode (e.g., Run, Program) to ensure it permits the execution of the function that is reporting as unavailable.

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Verified technical data. Last updated: March 2026

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