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FANUC Alarm RPM-027 — Illegal arc instruction.

FANUC RPM-027 (“Illegal arc instruction.”): Stand alone arc start used First check: Use motion attached arc start instruction

Updated 2026-08-29 · LogrobotLM reference

Description

Stand alone arc start used

Remedy · Remède

Use motion attached arc start instruction

Frequently asked · Questions fréquentes

What does FANUC alarm RPM-027 mean?
FANUC RPM-027 (“Illegal arc instruction.”): Stand alone arc start used
How do you troubleshoot FANUC alarm RPM-027?
Use motion attached arc start instruction

Related codes / Codes liés

RPM-020WARN read record not storedRPM-026Pitch value too small.RPM-028Segment too shortRPM-039Incompatible RPM data:nonCD/CD

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. · Informations indicatives issues du terrain — le manuel du constructeur et ses procédures de sécurité font foi. Ne shuntez jamais un organe de sécurité ; consignez (LOTO) avant toute intervention physique. How this reference is built →