KUKA Error 1506 — WRONG CIRCLE PARAMETER
ErrorDisplayed as KSS01506 on KRC4 / KRC5 controllers
KUKA 1506 (“WRONG CIRCLE PARAMETER”): The distance between the start point and/or the auxiliary point and/or the destination point is too small, or all the points lie on a straight line. First check: Program the auxiliary point or the destination point correctly.
Updated 2026-09-09 · LogrobotLM reference
Cause
The distance between the start point and/or the auxiliary point and/or the destination point is too small, or all the points lie on a straight line. It is impossible to construct a circle.
Effect
Stop via braking ramp. All active commands are inhibited.
Troubleshooting
Program the auxiliary point or the destination point correctly. Acknowledge the message.
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 →