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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 2026-09-17 · LogrobotLM reference

Description

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

Remedy

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

Related codes

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 →