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 <title><![CDATA[S7200测速程序]]></title>
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 <description><![CDATA[Latest 50 replies of S7200测速程序]]></description>
 <copyright><![CDATA[Copyright(C) 工控人家园]]></copyright>
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 <description><![CDATA[最简单的用计数器，数值除时间再经过换算成你要的速度；
计数器跟不上或计量精准度不够换成高速计数器或中断，但思路是一样的。]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-1433973#1471316.html]]></link>
 <author><![CDATA[sjm213]]></author>
 <category><![CDATA[西门子工控论坛]]></category>
 <pubdate><![CDATA[Sat, 03 Aug 2013 13:59:21 +0000]]></pubdate>
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 <description><![CDATA[在单位时间内接收的脉冲信号数，就是你需要的速度。]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-1433973#1471143.html]]></link>
 <author><![CDATA[wwcwwc]]></author>
 <category><![CDATA[西门子工控论坛]]></category>
 <pubdate><![CDATA[Sat, 03 Aug 2013 08:16:19 +0000]]></pubdate>
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