LogrobotLM

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FANUC Alarm RPC-004 — WARN Unable to receive

FANUC RPC-004 (“WARN Unable to receive”): The client could not receive a reply from a remote procedure call. First check: Check the code.

Updated 2026-09-17 · LogrobotLM reference

Description

The client could not receive a reply from a remote procedure call.

Remedy

Check the code.

Related codes

RPC-002WARN Can't decode resultRPC-003WARN Unable to sendRPC-005WARN Call timed outRPC-006WARN Incompatible versions of RPC

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 →