LogrobotLM

LogrobotLM — AI fault diagnosis for ABB · KUKA · FANUC robots. It reads your robot backup in your browser (never uploaded) and pinpoints the fault. Try it free →

FANUC Alarm RPC-003 — WARN Unable to send

FANUC RPC-003 (“WARN Unable to send”): The client could not send the data for a remote procedure call. First check: Check the cause code.

Updated 2026-09-17 · LogrobotLM reference

Description

The client could not send the data for a remote procedure call.

Remedy

Check the cause code.

Related codes

RPC-001WARN Can't encode argumentsRPC-002WARN Can't decode resultRPC-004WARN Unable to receiveRPC-005WARN Call timed out

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 →