14-7

Safety task inoperable

Allen-Bradley · Logix 5000

What does 14-7 mean?

The safety logic is invalid, which can be caused by a logic mismatch between the primary controller and safety partner, a watchdog timeout, or memory corruption. This prevents the safety task from executing correctly and may require re-downloading the program.

Common Causes

  • Safety logic is invalid
  • Mismatch in logic exists between the primary controller and safety partner
  • Watchdog timeout occurred
  • Memory is corrupt

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Clear the fault.

  2. 2

    If a safety task signature exists, safety memory is re-initialized using the safety task signature and the safety task begins executing.

  3. 3

    If a safety task signature does not exist, download the program again to allow the safety task to run.

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Verified technical data. Last updated: March 2026

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