FANUC Alarm SPOT-490 — IWC(DG) timer now in weld …
Manufacturer wording — IWC(DG) timer now in weld %d
The manual prints placeholders; your controller fills them in with the real group, axis or number.
FANUC SPOT-490 (“IWC(DG) timer now in weld …”): An invalid weld controller number was specified. First check: The current number of weld controllers that the system is configured for is displayed in the error message.
Updated 2026-09-17 · LogrobotLM reference
Description
An invalid weld controller number was specified.
Remedy
The current number of weld controllers that the system is configured for is displayed in the error message. Only use the value one up to and including the number posted on the error line. If you need to increase the number of weld controllers, then perform a controlled start, and define the new number of weld controllers when prompted during the SETUP APPLICATION menu.
Related codes
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 →