LogrobotLM

LogrobotLM — AI fault diagnosis for ABB · KUKA · FANUC robots. It reads your robot backup in your browser (never uploaded) and pinpoints the fault. Try it free →

KUKA Error 1385 — PROTOCOL ERROR

Displayed as KSS01385 on KRC4 / KRC5 controllers

KUKA 1385 (“PROTOCOL ERROR”): Error in the protocol software of the operator device or the output device. First check: Check the protocol software.

Updated 2026-09-09 · LogrobotLM reference

Cause

Error in the protocol software of the operator device or the output device.

Effect

Abort the command.

Troubleshooting

Check the protocol software.

Related codes

1384PARAMETER NOT EVALUATED1382ABORTED1381BACKGROUND TASK BUSY1390CIRCLE ANGLE NOT TAKEN INTO ACCOUNT

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 →