英文版：
http://support.automation.siemens.com/CN/llisapi.dll?aktprim=0&lang=en&referer=%2fCN%2f&func=cslib.csinfo&basisview=4000002&siteid=cseus&wttree=cs&treeLang=zh&groupid=18886882&extranet=standard&viewreg=CN&nodeid0=34612486&objaction=csopen
中文版：

http://support.automation.siemens.com/CN/llisapi.dll?func=cslib.csinfo&nodeID0=4000024&lang=zh&siteid=cseus&aktprim=0&extranet=standard&viewreg=CN&objid=34612486&basisview=4000002&wttree=cs&treeLang=zh