关键词: VB 脚本；触摸屏；弹窗实现；换帽预警

Abstract: Robot servo welding tongs are important equipment for welding the cab of the body in white in the welding workshop. During welding, the electrode cap on the welding tongs needs to be replaced manually due to wear. However, due to the limitations of the system, the robot does not have the early warning function when executing the automatic request for the cap change procedure. When the operator does not handle it, it will cause the robot to wait in the position of changing the cap, this will affect the production efficiency. This article will focus on the function of using the VB script of the Siemens HMI. Through the written VB program, when the robot is about to execute the cap change program at the end of the next workflow, the touch screen will pop up a prompt screen, which contains the robot station information and the information about the cap change, to remind the operator of the need to prepare tools and auxiliary materials in advance, achieve the function of warning and reminding of servo welding tongs cap change of welding robot.

Key words: VB scrip; HMI; Pop-up notification; Cap change early warning