STEP 7 V12 SP1下载地址：
http://support.automation.siemens.com/CN/llisapi.dll?query=TIA+PORTAL+V12&func=cslib.cssearch&content=adsearch%2Fadsearch.aspx&lang=zh&siteid=cseus&objaction=cssearch&searchinprim=0&nodeid0=4000024

WINCC V12 SP1下载地址：
http://support.automation.siemens.com/CN/adsearch/resultset.aspx?region=CN&lang=zh&netmode=internet&ui=MTg4ODY4ODMA&term=TIA+PORTAL+V12&ID=73956248&ehbid=73956248