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 <title><![CDATA[请教S7-300通信]]></title>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-1463956.html]]></link>
 <description><![CDATA[Latest 50 replies of 请教S7-300通信]]></description>
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 <description><![CDATA[这条是RS232吧，厂家用的是2头都是网线插口的,PC/MPI适配器RS232这条我有，插了并不能通信，厂家说现在改了，]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-1463956#1596483.html]]></link>
 <author><![CDATA[surflyh]]></author>
 <category><![CDATA[西门子工控论坛]]></category>
 <pubdate><![CDATA[Fri, 22 Aug 2014 09:41:41 +0000]]></pubdate>
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<item>
 <title><![CDATA[问题回复]]></title>
 <description><![CDATA[[attachment=124997] 适配器上面的那条线可以自制，适配器恐怕不能够自制了。
这条就是交叉线。]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-1463956#1596430.html]]></link>
 <author><![CDATA[wwcwwc]]></author>
 <category><![CDATA[西门子工控论坛]]></category>
 <pubdate><![CDATA[Fri, 22 Aug 2014 06:50:03 +0000]]></pubdate>
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