大家好我想请教几个问题,1、我打开程序的硬件配置组态时发现有一些模块是问号“?”这是怎么回事啊?是少GSD文件还是怎么回事呢?如图1 点击此处查看附件 2、当我要打开硬件配置组态时弹出一对话框写着“one or more objects or a type cannot be represented,sever"s7phrxyx.dll"for _S7H_STELLVERTRETER_CT objects could not be loaded.我需要安装什么server啊??? 希望大家帮我看看谢谢了!!!