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FANUC Alarm MOTN-291 — Can't convert to joint pos

FANUC MOTN-291 (“Can't convert to joint pos”): In this point, the Cartesian position can not be converted to a joint position. First check: Reteach the position.

Updated 2026-08-29 · LogrobotLM reference

Description

In this point, the Cartesian position can not be converted to a joint position.

Remedy · Remède

Reteach the position.

Frequently asked · Questions fréquentes

What does FANUC alarm MOTN-291 mean?
FANUC MOTN-291 (“Can't convert to joint pos”): In this point, the Cartesian position can not be converted to a joint position.
How do you troubleshoot FANUC alarm MOTN-291?
Reteach the position.

Related codes / Codes liés

MOTN-283LD: Continue motion not allowMOTN-290UTOOL not supported G:%d^2MOTN-292Encoder Limit (G:%d^2, A:%x^3 Hex)MOTN-293Increase ITP time

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 →