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FANUC Alarm COPT-020 — WARN Send_PC builtin failed

FANUC COPT-020 (“WARN Send_PC builtin failed”): A system error occurred when trying to send the data buffer to the PC. First check: Check other alarms in alarm log for details.

Updated 2026-08-29 · LogrobotLM reference

Description

A system error occurred when trying to send the data buffer to the PC.

Remedy · Remède

Check other alarms in alarm log for details.

Frequently asked · Questions fréquentes

What does FANUC alarm COPT-020 mean?
FANUC COPT-020 (“WARN Send_PC builtin failed”): A system error occurred when trying to send the data buffer to the PC.
How do you troubleshoot FANUC alarm COPT-020?
Check other alarms in alarm log for details.

Related codes / Codes liés

COPT-010WARN Send_PC Illegal wait flagCOPT-011WARN Send_PC Buffer too big for packetCOPT-021WARN Send_PC event parm %s errorCOPT-022WARN Still waiting for %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 →