WinCC 实现点击设备弹出设置窗口
本功能实现点击电机图标实现设置电机频率的窗口。
右击电机属性，在事件中编写C代码实现功能。
下面是代码的对应功能。其中的接口模板3.pdl是一个画面窗口，所对应的标题等信息。
在变量中定义两个变量分别用于存储位置信息。B_win_x; B_win_y;feedbin1_motorA_fre_setval; feedbin1_motorA_mst;
选择一个层，拖放一个画面窗口。
在画面窗口属性中将其属性名称改为"Ctrl1"
在画面窗口的几何属性中位置X，位置Y分别关联上面新建的位置信息变量。
根据实际需要新建一个PDL接口画面，并命名为"接口模板3.PDL"
在接口模板3.pdl中关联变量，注：关联的变量只要写后缀的部分就可以了，因为前缀是公共的部分，在C代码中已经实现了。其实本例中只关联了两个变量。
对于数值型数据关联也是一样的，只要写后缀部分就可以了。
在另一个电机设备上在命名变量的时候，在变量中定义两个变量分别feedbin1_motorB_fre_setval; feedbin1_motorB_mst; 它的特点是通过前缀来区分不同的变量。
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