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FANUC Alarm LNTK-007 — STOP Illegal encoder number

FANUC LNTK-007 (“STOP Illegal encoder number”): An invalid sensor(encoder) number was used within the specified tracking program First check: Check the value of the specified program instruction's LINE[] parameter and the program's associated schedule $LNSCH[i].$TRK_ENC_NUM value to make sure that it is one of the valid values listed under

Updated 2026-09-17 · LogrobotLM reference

Description

An invalid sensor(encoder) number was used within the specified tracking program

Remedy

Check the value of the specified program instruction's LINE[] parameter and the program's associated schedule $LNSCH[i].$TRK_ENC_NUM value to make sure that it is one of the valid values listed under the description for the $ENC_STAT[] system variable.

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 →