FANUC Alarm ARC-179 — Power supply com alarm(E:…)
Manufacturer wording — Power supply com alarm(E:%d)
The manual prints placeholders; your controller fills them in with the real group, axis or number.
FANUC ARC-179 (“Power supply com alarm(E:…)”): This alarm occurs when communication between the welding equipment control board and the robot controller stops. First check: 1. If this alarm occurred with ARC-143, please perform the remedy for ARC-143.
Updated 2026-09-17 · LogrobotLM reference
Description
This alarm occurs when communication between the welding equipment control board and the robot controller stops.
Remedy
1. If this alarm occurred with ARC-143, please perform the remedy for ARC-143. 2. If this alarm is still occurred after restarting the system, check the wiring between the controller and welding power supply. If problem is not found, check the power supply control board.
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 →