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FANUC Alarm SPOT-303 — SPOT-303

Manufacturer wording — %s
The manual prints placeholders; your controller fills them in with the real group, axis or number.

FANUC SPOT-303 (“SPOT-303”): This message is posted to identify a spot that executed while weld simulation was active. First check: Set $spotcofig.$sim_warn = FALSE, to simulate welds without the SPOT-303 warning.

Updated 2026-09-17 · LogrobotLM reference

Description

This message is posted to identify a spot that executed while weld simulation was active. The message will look like: SPOT-303: SimWld (Progname,Line#). Note that this message is only posted if $spotcofig.$weld_sim = TRUE, and $spotcofig.$sim_warn = TRUE

Remedy

Set $spotcofig.$sim_warn = FALSE, to simulate welds without the SPOT-303 warning. Set $spotcofig.$sim_enb = FALSE, to disable weld simulation, and the SPOT-303 warning.

Related codes

SPOT-301Weld enabled during spot simSPOT-302Weld sim DisabledSPOT-304Stroke disabled during weld retry …SPOT-306Found duplicate model

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 →