STEP 7-Micro/WIN V4.0 SP4 正式版本地下载无需安装V4.0
http://www.ad.siemens.com.cn/download/Soft/00001/STEP_7-MicroWIN_V4_SP4.rar

Micro Win 4.0 SP5完整版
http://bbs.e10000.cn/a/a.asp?B=25&ID=398218

STEP 7-Micro/WIN V4.0 的 SP5
http://support.automation.siemens.com/CN/view/zh/24675347

STEP 7-Micro/WIN V4.0 的 SP6
http://support.automation.siemens.com/WW/llisapi.dll/csfetch/27207727/STEP7-MicroWIN_V40_SP6.exe

STEP 7-Micro/WIN Instruction Library （指令库）下载
http://www.ad.siemens.com.cn/download/Soft/00001/Tbox_V32_STEP7.zip