LogrobotLM

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KUKA Error 1424 — PROGRAM STACK OVERFLOW

Error

Displayed as KSS01424 on KRC4 / KRC5 controllers

KUKA 1424 (“PROGRAM STACK OVERFLOW”): The stack depth for subprograms and functions has been exceeded. First check: Modify the program accordingly.

Updated 2026-09-09 · LogrobotLM reference

Cause

The stack depth for subprograms and functions has been exceeded. Also occurs when subprograms call each other in an infinite loop.

Effect

Stop via braking ramp. All active commands are inhibited.

Troubleshooting

Modify the program accordingly. Acknowledge the message.

Related codes

1426VARIABLE STACK OVERFLOW1419<X, Y, Z, A, B, C> TOOL NOT PROGRAMMED1418<X, Y, Z, A, B, C> BASE NOT PROGRAMMED

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 →