F009

Data or file too large / Memory unavailable

Allen-Bradley · Logix 5000

What does F009 mean?

The data or file being processed is too large to handle, or system memory is unavailable to complete the requested operation. This indicates a resource limitation.

Common Causes

  • Data or file is too large
  • Memory unavailable

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Verify controller memory utilization using Studio 5000 Logix Designer 'Controller Properties' to check used versus available memory.

  2. 2

    Inspect program routines and tag database for large arrays, excessive UDTs, or unoptimized data structures that may consume excessive memory.

  3. 3

    Check for excessive communication connections or large data transfers from connected HMI/SCADA systems or other devices that could be consuming communication buffers or system memory.

  4. 4

    Review recent program modifications or online edits for any changes that might have significantly increased the memory footprint of the application.

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Verified technical data. Last updated: March 2026

Related Faults

Allen-Bradley Error F009: Data or file too large / Memory unavailable — Troubleshooting Guide | ErrorLib