Stack overflow

What does 6487 mean?

An internal fault indicating that the drive's program stack has overflowed its allocated memory. This is a severe internal software issue that prevents the drive from executing code correctly and cannot be reset by the user. It signifies a critical programming error or memory corruption.

• Recursive function calls in custom application code without proper termination conditions.
• Allocation of excessively large local variables on the stack within a function.
• Deep function call chains within the drive's operating system or user application.
• Corruption of the stack pointer due to memory access violations.
• Insufficient memory allocated for the program stack in the drive's internal configuration.

Click steps to track your progress.

1. 1

   Perform a power cycle of the drive by disconnecting input power for 60 seconds.

2. 2

   If custom application code is loaded, review its structure for deep recursion or large stack allocations.

3. 3

   Attempt to perform a full factory reset of the drive (e.g., P0-10 = 1).

4. 4

   Reinstall the drive's firmware to ensure the operating system is clean.

5. 5

   Reload a previously verified parameter backup that did not cause this fault.

6. 6

   Monitor internal memory usage (e.g., diagnostic parameter P1-52 if available) after boot.