KUKA Error 1477 — NO MAIN RUN

Displayed as KSS01477 on KRC4 / KRC5 controllers

KUKA 1477 (“NO MAIN RUN”): Main run display selected, but no main run block has been interpreted yet. First check: Start the program.

Updated 2026-09-09 · LogrobotLM reference

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 →