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FANUC Alarm LNTK-035 — STOP Invalid INTR function pointer

FANUC LNTK-035 (“STOP Invalid INTR function pointer”): An invalid internal function pointer was encountered. First check: Perform a COLD start of the system.

Updated 2026-09-17 · LogrobotLM reference

Description

An invalid internal function pointer was encountered.

Remedy

Perform a COLD start of the system. (Cycle power.) Notify FANUC Robotics if problem persists.

Related codes

LNTK-033STOP Failed to send a packetLNTK-034STOP Failed to make a packetLNTK-036STOP Invalid tracking groupLNTK-037STOP Rotation diff exceeds limit

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 →