KUKA Error 1398 — OPERATING MODE SWITCH TEST
Displayed as KSS01398 on KRC4 / KRC5 controllers
KUKA 1398 (“OPERATING MODE SWITCH TEST”): During selection or start from another operator device, the selector switch is not in the "RUN" position on the RST. First check: Set the RST selector switch to the "RUN" position.
Updated 2026-09-09 · LogrobotLM reference
Cause
During selection or start from another operator device, the selector switch is not in the "RUN" position on the RST.
Effect
The command is not processed.
Troubleshooting
Set the RST selector switch to the "RUN" position.
Related codes
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 →