发布于 2010-09-10 09:02:14
1楼
楼主先看看书如何
Operating Instructions: MICROMASTER PROFIBUS Optional Board(手册)
下载:
http://support.automation.siemens.com/WW/view/en/6586565
MM440与S7-300通过DP通讯实现读取和修改参数例程
下载:
http://www.ad.siemens.com.cn/download/searchResult.aspx?searchText=A0279
S7-300C 与MM420 PROFIBUS-DP通讯
下载:
http://www.ad.siemens.com.cn/download/searchResult.aspx?searchText=A0095