FANUC Alarm ARC-207 — WARN Arclink ch… no bus power
Manufacturer wording — WARN Arclink ch%d no bus power
The manual prints placeholders; your controller fills them in with the real group, axis or number.
FANUC ARC-207 (“WARN Arclink ch… no bus power”): The Arclink interface on the controller cannot detect any power or other equipment on the network connections. First check: Make sure that all Arclink connections are properly made and that the connected welding equipment is also connected and turned on.
Updated 2026-09-17 · LogrobotLM reference
Description
The Arclink interface on the controller cannot detect any power or other equipment on the network connections. This indicates that there is no Arclink network connected, or that the welding equipment is turned off or has been disconnected.
Remedy
Make sure that all Arclink connections are properly made and that the connected welding equipment is also connected and turned on.
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 →