[Cause]
The position of the movable nozzle during the pressurization action of the servo welding gun exceeds the stroke limit of the welding gun axis. The pressurizing operation has stopped because the operating range of the welding gun axis has been exceeded. The numbers in parentheses indicate the action group number and the axis number within the action group.
[Countermeasure]
Confirm the zero point calibration position of the welding gun axis and the position close to the stroke limit. If these positions are incorrect, update the zero point calibration position so that it becomes the correct position. If these positions are correct, replace the electrode tip with a new one so that the pressure operation can be performed within the operating range.