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冗余417H系统通过Ylink连接S7-300
问题补充：
我的是PCS76.0，项目为冗余的417H系统，想通过Y_LINK和DP通讯方式和S7-300（315-2DP）进行IO通讯。请各位大仙教我，谢谢！
最佳答案
你的是417H是吧 我当时是做的414H的系统，第一可以用300CPU的DP口，MPI/DP和DP都可以使用。既然你用的是YLINK连接315从站做通讯 那肯定是315从站里是有程序的。手册上大部分是讲的很正确的，但是我补充一点，把你的项目中添加300CPU的项目的时候，将项目直接复制到你的项目中，项目中肯定是包括300的硬件组态的。再进行IO的配置，这样通讯才能做的通（前提是300的程序不是你写的）。当时我在现场就是因为没有这一步，把自己搞的焦头烂额。第二建议你把地址配个整数位，以免到时候写程序的时候不好计算。
3.与300通讯，必须要在通讯双方进行组态的。
4.可以通过其它方式进行试验模拟，但最终的通讯双方必须要进行组态。因此还是要在DCS允许的情况下进行。
请重点参考下载中心的文章
《Ylink后连接S7-300从站（集成DP口）的组态方法（更新版）》
提问者对于答案的评价：
谢谢你，很详细。问题已经解决。
专家置评
参考:Ylink后连接S7-300从站（集成DP口）的组态方法（更新版)
http://www.ad.siemens.com.cn/download/searchResult.aspx?searchText=A0144.
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