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 SPOT-088 — PAUSE Serial comm error …-gun 1

Manufacturer wording — PAUSE Serial comm error %s-gun 1
The manual prints placeholders; your controller fills them in with the real group, axis or number.

FANUC SPOT-088 (“PAUSE Serial comm error …-gun 1”): A serial communications error was detected. First check: Ensure that all cables to the serial port are properly connected, and that the weld controller is powered on.

Updated 2026-09-17 · LogrobotLM reference

Description

A serial communications error was detected.

Remedy

Ensure that all cables to the serial port are properly connected, and that the weld controller is powered on. The error code that is appended to this error message is the status of attempted read/write operation.

Related codes

SPOT-086PAUSE BACKUP OPEN timed out-gun 1SPOT-087PAUSE GUN OPEN timed out-gun 1SPOT-089PAUSE Serial polling timeout-gun 1SPOT-092PAUSE GUN OPEN DETECT input is on …-gun 1

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 →