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 <title><![CDATA[西门子300使用讨论]]></title>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-1390779.html]]></link>
 <description><![CDATA[Latest 50 replies of 西门子300使用讨论]]></description>
 <copyright><![CDATA[Copyright(C) 工控人家园]]></copyright>
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 <url><![CDATA[images/rss.gif]]></url>
 <title><![CDATA[工控人家园]]></title>
 <link><![CDATA[http://www.ymmfa.com]]></link>
 <description><![CDATA[工控人家园]]></description>
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<item>
 <title><![CDATA[]]></title>
 <description><![CDATA[&nbsp;&nbsp;楼主有推荐的书让我妈看看嘛，或者是发个好的点子资料可以吗，万分感谢]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-1390779#1325704.html]]></link>
 <author><![CDATA[flyaway]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Thu, 16 Aug 2012 08:14:59 +0000]]></pubdate>
</item>
<item>
 <title><![CDATA[]]></title>
 <description><![CDATA[先定义变量VAR_INPUT
 D_IN1:INT;
 D_IN2:INT;
 D_IN3:INT;
 D_IN4:INT;
 D_IN5:INT;
 D_IN6:INT;
 END_VAR&nbsp;&nbsp; 
VAR_TEMP
 D_T1:REAL;
 D_T2:REAL;
 D_T3:REAL;
 D_T4:REAL;
 D_T5:REAL;
 D_T6:REAL;
 INDEX:INT;
END_VAR
VAR_OUTPUT
DATA_OUT:REAL;&nbsp;&nbsp; 
END_VAR
写程序:
BEGIN
IF D_IN1&gt;47 AND D_I ..]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-1390779#1325670.html]]></link>
 <author><![CDATA[jx_einstein]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Thu, 16 Aug 2012 07:18:38 +0000]]></pubdate>
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<item>
 <title><![CDATA[]]></title>
 <description><![CDATA[不了解 [s:26]]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-1390779#1325621.html]]></link>
 <author><![CDATA[凯可可]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Thu, 16 Aug 2012 06:25:59 +0000]]></pubdate>
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