Address Reference Exists to Deleted Area

What does F013 mean?

This error occurs when a program or instruction attempts to reference a memory area that has been deleted. This results in an invalid memory access, as the target location no longer exists within the processor's memory map.

• Program logic still referencing a deleted tag or data file.
• Attempting to access memory freed by a previous operation.
• Pointer corruption leading to a reference to an invalid address.

Click steps to track your progress.

1. 1

   Verify the online program in the PLC matches the latest known good offline project file to identify any discrepancies in program logic, tag definitions, or I/O configuration.

2. 2

   Inspect the program logic for instructions that utilize indirect addressing, pointers, or array indexing, paying close attention to any areas that may have been recently modified, deleted, or renamed.

3. 3

   Check the I/O configuration and tag database to ensure all referenced I/O modules and associated tags exist and are correctly defined within the controller's memory map.

4. 4

   Perform a full download of the verified offline project to the PLC to ensure the controller's memory map is completely synchronized with the program, after backing up the current online program.