最佳答案
http://www.plclc.com/content.asp?class01=%CF%C2%D4%D8%D6%D0%D0%C4&showtype=4下载链接
提问者对于答案的评价:
谢谢
专家置评
http://w2.siemens.com.cn/download/smart/STEP-7MicroWIN%20V4.0%20SP9%E5%AE%8C%E6%95%B4%E7%89%88.zip
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