GSD安裝失敗，STEP7中無法安裝GSD文件的處理方法。故障信息：“An update is presently not possible. In one or more STEP 7 applications at least one GSD file or type file is being referenced.”“目前尚無法更新。在一個或多個STEP 7 應(yīng)用程序中將至少有一個GSD文件或類型文 件正在被引用”