Illegal User Program

What does 10240000 hex mean?

The user program is not correctly structured or exceeds system limitations. This error is detected during program download, power ON, or Controller reset. If this fault occurs, the user program will stop, and the CPU Unit's operation will also cease, requiring a power cycle or Controller reset for recovery.

• The user program exceeds the permissible limit for the number of nesting levels for functions or function blocks.

Click steps to track your progress.

1. 1

   Locate the section in the user program where the number of nesting levels for functions or function blocks exceeds the limit.

2. 2

   Reduce the number of nesting levels to within the specified limit and re-download the user program.

3. 3

   Use the program check feature in Sysmac Studio to confirm that nesting level limits are not exceeded before downloading.