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FANUC Alarm SPOT-086 — PAUSE BACKUP OPEN timed out-gun 1

FANUC SPOT-086 (“PAUSE BACKUP OPEN timed out-gun 1”): The robot timed out waiting for the backup gun to open. First check: Check the Equipment I/O menu, as well as all wiring.

Updated 2026-09-17 · LogrobotLM reference

Description

The robot timed out waiting for the backup gun to open.

Remedy

Check the Equipment I/O menu, as well as all wiring. If the input is going high, try increasing the timeout by setting $spoteqsetup[].$bu_op_to to a bigger number. The default is 2000 ms, or 2 seconds.

Related codes

SPOT-084PAUSE BACKUP CLOSE timed out-gun 1SPOT-085PAUSE GUN CLOSE timed out-gun 1SPOT-087PAUSE GUN OPEN timed out-gun 1SPOT-088PAUSE Serial comm error …-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 →