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F01C

Disk File Write Protected or Not Accessible (Offline Only)

Allen-Bradley · Logix and SLC PLC

¿Qué significa F01C ?

This fault applies specifically to offline operations and indicates that a disk file cannot be written to because it is either write-protected or otherwise inaccessible. This prevents saving changes or creating new files on the disk.

Causas comunes

  • File system attribute set to read-only.
  • Insufficient user permissions to write to the specified disk location.
  • Disk corruption or network drive unavailability (for network files).

Pasos de reparación & Lista de verificación

Haga clic en los pasos para seguir su progreso.

  1. 1

    Verify the logged-in user account has full read/write permissions for the directory containing the PLC project files.

  2. 2

    Check the properties of the PLC project file and its parent folder to ensure the 'Read-only' attribute is not selected.

  3. 3

    Inspect the available free disk space on the drive where the PLC project file is located to ensure sufficient capacity for saving.

  4. 4

    Verify no antivirus or security software is actively blocking write operations to the project file directory.

  5. 5

    Attempt to save the PLC project file to an alternate local disk location or a newly created folder to isolate the directory access issue.

Ver todos los códigos en este manual (39)
Datos técnicos verificados. Última actualización: March 2026

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Fuente: Allen-Bradley Logix and SLC PLC