[Cause]
This is the message displayed immediately before ARC-051 during the communication connection between the robot controller and the welding power source.
[Countermeasure]
If ARC-051 appears immediately afterward, there is no problem and no countermeasure is required. If this message appears but ARC-051 is not displayed at all, refer to countermeasure 4 for ARC-040 above. If the problem still does not improve, contact the service center.