KUKA Error 1023 — RECEIVE BUFFER OVERFLOW
Displayed as KSS01023 on KRC4 / KRC5 controllers
KUKA 1023 (“RECEIVE BUFFER OVERFLOW”): The receive buffer is full. First check: Read the telegram with CREAD.
Updated 2026-09-09 · LogrobotLM reference
Cause
The receive buffer is full.
Effect
The controller no longer accepts any telegram.
Troubleshooting
Read the telegram with CREAD. Increase the number of input buffers in the SERIAL.INI file.
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 →