KUKA Error 1561 — SINEC L2 CONNECTION CHANNEL NOT CLOSED
InfoDisplayed as KSS01561 on KRC4 / KRC5 controllers
KUKA 1561 (“SINEC L2 CONNECTION CHANNEL NOT CLOSED”): An attempt was made to close the SINEC L2 bus channel without first closing all SINEC L2 channels. First check: Close all SINEC L2 connection channels.
Updated 2026-09-09 · LogrobotLM reference
Cause
An attempt was made to close the SINEC L2 bus channel without first closing all SINEC L2 channels.
Effect
None.
Troubleshooting
Close all SINEC L2 connection channels.
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 →