Illegal Address Format - Symbol Character Limit

What does F005 mean?

This error occurs when a symbolic address or name exceeds the maximum number of characters supported by the device. The processor cannot process the overly long symbol, leading to an addressing failure.

• Symbol name created with more characters than allowed by the controller's specification.
• Attempting to use a symbol name from a different controller type with different limits.

Click steps to track your progress.

1. 1

   Consult the Allen-Bradley Logix/SLC documentation for the specific PLC model to determine the maximum allowed character limit for symbolic addresses and tag names.

2. 2

   Access the PLC program using the appropriate software (e.g., Studio 5000 Logix Designer, RSLogix 500).

3. 3

   Inspect all recently added or modified symbolic addresses and tag names within the program for compliance with the documented character limit.

4. 4

   Identify and Modify any symbolic address or tag name that exceeds the maximum character limit to ensure adherence to the device's specifications.

5. 5

   Re-download the corrected PLC program to the controller and Verify the error F005 is cleared.