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FANUC Alarm HRTL-041 — WARN Protocol wrong type

FANUC HRTL-041 (“WARN Protocol wrong type”): An error occurred in the Ethernet networking software (TCP/IP). First check: Consult your network administrator or call the FANUC Robotics Service Hotline for assistance.

Updated 2026-09-17 · LogrobotLM reference

Description

An error occurred in the Ethernet networking software (TCP/IP).

Remedy

Consult your network administrator or call the FANUC Robotics Service Hotline for assistance.

Related codes

HRTL-039WARN Destination address requiredHRTL-040WARN Message size too longHRTL-042WARN Protocol not availableHRTL-043WARN Protocol not supported

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 →