[Cause]
A communication abnormality occurred such as the welding power source no longer responded.
[Remedy]
Please confirm the following items.
Check the alarm history for other alarms. Depending on the alarm, communication with the welding equipment may be suspended. In that case, resetting the alarm can restore communication. When communication resumes, ARC-177 "Robot(E:1) reset complete" is displayed.
Confirm whether the built-in welding power source is started and whether power is supplied
Whether the communication cable of the built-in welding power source is correctly connected