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 →