18-4
Manufacturer-specific Physical Axis Fault bit set
Allen-Bradley · Logix 5000
What does 18-4 mean?
The Physical Axis Fault bit is active due to a manufacturer-specific axis fault. Further details about the specific fault are required from manufacturer-specific attributes (CIP Initialization Fault - Mfg attributes).
Common Causes
- A manufacturer-specific axis fault has occurred setting Physical Axis Fault bit
Repair Steps & Checklist
Click steps to track your progress.
- 1
See CIP Initialization Fault - Mfg attributes for details about the fault that occurred to determine corrective action.
Verified technical data. Last updated: March 2026
Related Faults
Source: Logix 5000