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FANUC Alarm LNTK-018 — STOP Invalid teach distance

FANUC LNTK-018 (“STOP Invalid teach distance”): An invalid or uninitialized teach distance value (specified by $LNSCH[i].$TEACH_DIST, where 'i' is the FRAME number used within the DETAIL screen for the specified program) was found. First check: Make sure that this value is properly set prior to either teaching path positions, or issuing programmed robot motion instructions.

Updated 2026-09-17 · LogrobotLM reference

Description

An invalid or uninitialized teach distance value (specified by $LNSCH[i].$TEACH_DIST, where 'i' is the FRAME number used within the DETAIL screen for the specified program) was found.

Remedy

Make sure that this value is properly set prior to either teaching path positions, or issuing programmed robot motion instructions.

Related codes

LNTK-016STOP Invalid input timeLNTK-017STOP Invalid input pointerLNTK-019STOP Invalid scale factorLNTK-020STOP Invalid extreme position

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 →