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 <title><![CDATA[西门子PPI通讯协议]]></title>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-15294.html]]></link>
 <description><![CDATA[Latest 50 replies of 西门子PPI通讯协议]]></description>
 <copyright><![CDATA[Copyright(C) 工控人家园]]></copyright>
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 <description><![CDATA[说的太简单了，真的看不明白。能再深入浅出讲一下吧，多谢在光先了。]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-15294#387486.html]]></link>
 <author><![CDATA[ljc2008]]></author>
 <category><![CDATA[西门子工控论坛]]></category>
 <pubdate><![CDATA[Tue, 16 Dec 2008 03:26:58 +0000]]></pubdate>
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<item>
 <title><![CDATA[]]></title>
 <description><![CDATA[楼主说的方法是正确的，但是要完整测试出PPI协议还是比较困难的]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-15294#318612.html]]></link>
 <author><![CDATA[benben_2007]]></author>
 <category><![CDATA[西门子工控论坛]]></category>
 <pubdate><![CDATA[Sat, 27 Sep 2008 06:48:21 +0000]]></pubdate>
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 <title><![CDATA[]]></title>
 <description><![CDATA[简单明了，好]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-15294#318521.html]]></link>
 <author><![CDATA[xxhhll1]]></author>
 <category><![CDATA[西门子工控论坛]]></category>
 <pubdate><![CDATA[Sat, 27 Sep 2008 05:14:46 +0000]]></pubdate>
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<item>
 <title><![CDATA[]]></title>
 <description><![CDATA[这样的解释基本没有任何意义，楼上的还“学习学习”，晕倒中]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-15294#307229.html]]></link>
 <author><![CDATA[以恒]]></author>
 <category><![CDATA[西门子工控论坛]]></category>
 <pubdate><![CDATA[Thu, 11 Sep 2008 02:46:49 +0000]]></pubdate>
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<item>
 <title><![CDATA[]]></title>
 <description><![CDATA[学习学习 刚好最近忙于最PLC联控]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-15294#307053.html]]></link>
 <author><![CDATA[gezhicheng]]></author>
 <category><![CDATA[西门子工控论坛]]></category>
 <pubdate><![CDATA[Wed, 10 Sep 2008 23:22:56 +0000]]></pubdate>
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<item>
 <title><![CDATA[]]></title>
 <description><![CDATA[学习学习]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-15294#307029.html]]></link>
 <author><![CDATA[e2kevin]]></author>
 <category><![CDATA[西门子工控论坛]]></category>
 <pubdate><![CDATA[Wed, 10 Sep 2008 18:41:32 +0000]]></pubdate>
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<item>
 <title><![CDATA[]]></title>
 <description><![CDATA[学习学习]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-15294#285284.html]]></link>
 <author><![CDATA[dianchisun]]></author>
 <category><![CDATA[西门子工控论坛]]></category>
 <pubdate><![CDATA[Wed, 13 Aug 2008 04:54:32 +0000]]></pubdate>
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<item>
 <title><![CDATA[]]></title>
 <description><![CDATA[我是新手，看的不是很明白]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-15294#245759.html]]></link>
 <author><![CDATA[lqiuhua]]></author>
 <category><![CDATA[西门子工控论坛]]></category>
 <pubdate><![CDATA[Wed, 18 Jun 2008 09:56:21 +0000]]></pubdate>
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