F012

Incorrect command parameters

Allen-Bradley · Logix 5000

What does F012 mean?

The parameters provided with the command are incorrect or invalid for the requested operation. Review the command syntax and parameter values.

Common Causes

  • Incorrect command parameters

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Identify the specific Logix 5000 instruction or command triggering the F012 error within the application program.

  2. 2

    Verify the syntax and data types of all parameters used within the identified command against the Allen-Bradley instruction set reference manual for the Logix 5000 platform.

  3. 3

    Check the current values and ranges of the tags or variables assigned to the parameters of the faulty command in online mode to ensure validity.

  4. 4

    Inspect any preceding logic, data sources, or HMI inputs that generate or modify the parameter values for the command, ensuring they output valid data.

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Verified technical data. Last updated: March 2026

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