KUKA Error 1392 — WRITE PROTECTION DUE TO PROCESS STATE
Displayed as KSS01392 on KRC4 / KRC5 controllers
KUKA 1392 (“WRITE PROTECTION DUE TO PROCESS STATE”): Write access to a "$" variable in a prohibited process state (active, not active, RC--Ready). First check: Set the process state as permitted.
Updated 2026-09-09 · LogrobotLM reference
Cause
Write access to a "$" variable in a prohibited process state (active, not active, RC--Ready).
Effect
The command is not processed.
Troubleshooting
Set the process state as permitted.
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 →