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FANUC Alarm COPT-004 — WARN Add PC Var type not supported

FANUC COPT-004 (“WARN Add PC Var type not supported”): The variable requested in the ADD Byname or Send SysVar routines is of a data type that is not supported. First check: Check variable data type.

Updated 2026-08-29 · LogrobotLM reference

Description

The variable requested in the ADD Byname or Send SysVar routines is of a data type that is not supported.

Remedy · Remède

Check variable data type. Only integer, real and string data is supported. Check program and variable name spellings.

Frequently asked · Questions fréquentes

What does FANUC alarm COPT-004 mean?
FANUC COPT-004 (“WARN Add PC Var type not supported”): The variable requested in the ADD Byname or Send SysVar routines is of a data type that is not supported.
How do you troubleshoot FANUC alarm COPT-004?
Check variable data type. Only integer, real and string data is supported. Check program and variable name spellings.

Related codes / Codes liés

COPT-002WARN Add PC Uninit prog or var nameCOPT-003WARN Add PC Variable not foundCOPT-005WARN Add PC illegal index into bufferCOPT-006WARN Add PC buffer overflow - parm %s

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 →