The icon and connector provide the graphical representation and parameter definitions needed if you want to use a VI as a sub-routine or function in the block diagrams of other VIs. 图标和连接器提供了VI作为其他VI中的子程序或函数时的图形表示和所需的参数定义。
The Paper introduces the application of PLC in Medium-frequency heating bender for large caliber pipe, and design scheme of the main control sub-routine is given. 本文介绍了PLC在大口径中频加热弯管机控制系统中的应用,并给出了控制系统关键子程序的设计方案。