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KUKA Error 11 — PROGRAM STACK OVERFLOW

Error

Displayed as KSS00011 on KRC4 / KRC5 controllers

KUKA 11 (“PROGRAM STACK OVERFLOW”): Occurs during program or command processing. First check: Change the program structure and reset the program.

Updated 2026-09-09 · LogrobotLM reference

Cause

Occurs during program or command processing. The KRL program or the command has too little space to process the task.

Effect

Stop via braking ramp. All active commands inhibited.

Troubleshooting

Change the program structure and reset the program.

Indicative field information — the robot manufacturer's manual and safety procedures always prevail. Never bypass a safety device; apply lockout/tagout (LOTO) before any physical intervention. How this reference is built →