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FANUC Alarm FRCE-021 — Sensor index does not exist

FANUC FRCE-021 (“Sensor index does not exist”): The force sensor which is specified by sensor index does not exist. First check: Please specified correct sensor index.

Updated 2026-09-17 · LogrobotLM reference

Description

The force sensor which is specified by sensor index does not exist.

Remedy

Please specified correct sensor index.

Related codes

FRCE-019Tolerance data is 0 or lessFRCE-020Sensor error excess (S:… E:…)FRCE-022Offset value is neededFRCE-023Force sensor error occurred

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 →