[Cause]
This alarm is issued when communication between the welding equipment control board and the robot controller stops.
[Countermeasure]
1. If the alarm of ARC-143 occurs at the same time, take the countermeasure described in ARC-143.
2. If the problem cannot be reproduced even after restarting the system, check the wiring between the controller and welding power source. If there is no abnormality, check the welding equipment control board.