F01C
Disk file write protected or inaccessible (offline only)
Allen-Bradley · Logix 5000
What does F01C mean?
The disk file is write-protected or otherwise not accessible, specifically when operating offline. This prevents modifications or updates to the file.
Common Causes
- Disk file is write protected or otherwise not accessible (offline only)
Repair Steps & Checklist
Click steps to track your progress.
- 1
Verify the current user account has full read/write permissions for the project file and its containing directory.
- 2
Inspect the properties of the project file (.ACD) to ensure the 'Read-only' attribute is unchecked.
- 3
Check the available disk space on the local or network drive hosting the project file.
- 4
Verify network connectivity and proper mapping to the shared location if the project file is stored on a network drive.
Verified technical data. Last updated: March 2026
Related Faults
Source: Logix 5000