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FANUC Alarm MEMO-159Convert failed in %s

FANUC MEMO-159 (“Convert failed in %s”): When loading the specified KAREL program the variable type definition required conversion. First check: See the diagnostic data file, FR:KRLCONV.LS, for more information about the specific variable and program involved.

Updated 2026-08-29 · LogrobotLM reference

Description

When loading the specified KAREL program the variable type definition required conversion. The variable reference could not be converted. Therefore, the program was not loaded as needed.

Remedy · Remède

See the diagnostic data file, FR:KRLCONV.LS, for more information about the specific variable and program involved. Translate this program using a version of the translator that matches the version of the controller. Then try to load the program again.

Frequently asked · Questions fréquentes

What does FANUC alarm MEMO-159 mean?
FANUC MEMO-159 (“Convert failed in %s”): When loading the specified KAREL program the variable type definition required conversion. The variable reference could not be converted. Therefore, the program was not loaded as needed.
How do you troubleshoot FANUC alarm MEMO-159?
See the diagnostic data file, FR:KRLCONV.LS, for more information about the specific variable and program involved. Translate this program using a version of the translator that matches the version of the controller. Then try to load the program again.

Related codes / Codes liés

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 →