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 <title><![CDATA[请帮忙用S7-200设计一个程序]]></title>
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 <description><![CDATA[Latest 50 replies of 请帮忙用S7-200设计一个程序]]></description>
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 <description><![CDATA[这个很简单的了，用读PLC的时钟指令和比较。你是要别人帮忙做工程还是学习？]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-94095#955745.html]]></link>
 <author><![CDATA[hbxfluo]]></author>
 <category><![CDATA[西门子工控论坛]]></category>
 <pubdate><![CDATA[Thu, 13 Jan 2011 02:45:35 +0000]]></pubdate>
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