18-3

Physical Axis Fault bit set

Allen-Bradley · Logix 5000

What does 18-3 mean?

The Physical Axis Fault bit is active, indicating a fault on the physical axis. More information about the specific fault can be found in the CIP Axis Fault attributes.

Common Causes

  • The Physical Axis Fault bit is set, indicating a fault on the physical axis

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    See CIP Axis Fault attributes for details about the fault that occurred to determine corrective action.

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Verified technical data. Last updated: March 2026

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