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 <title><![CDATA[问一下]]></title>
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 <description><![CDATA[Latest 50 replies of 问一下]]></description>
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 <description><![CDATA[就是M20由off到on时接通一个扫描周期．]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-72902#1057755.html]]></link>
 <author><![CDATA[王海fa]]></author>
 <category><![CDATA[三菱工控论坛]]></category>
 <pubdate><![CDATA[Tue, 31 May 2011 12:57:15 +0000]]></pubdate>
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 <description><![CDATA[那是因为M20你用的上升沿，所以你在电脑上监控看到的就是M20通一下马上就没信号了，如果要它信号长点可以用常开或者是延时控制]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-72902#844546.html]]></link>
 <author><![CDATA[王春杰]]></author>
 <category><![CDATA[三菱工控论坛]]></category>
 <pubdate><![CDATA[Mon, 09 Aug 2010 07:58:56 +0000]]></pubdate>
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 <description><![CDATA[为什么M20接通瞬间M3就复位？为什么M20接通了马上又断开？]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-72902#844529.html]]></link>
 <author><![CDATA[juavin]]></author>
 <category><![CDATA[三菱工控论坛]]></category>
 <pubdate><![CDATA[Mon, 09 Aug 2010 07:37:20 +0000]]></pubdate>
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 <title><![CDATA[]]></title>
 <description><![CDATA[M98接通时复位M3&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;M20接通瞬间复位M3（M20是上升沿），M20是接通马上有断开（上升沿）。]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-72902#844397.html]]></link>
 <author><![CDATA[汇荣铝业]]></author>
 <category><![CDATA[三菱工控论坛]]></category>
 <pubdate><![CDATA[Mon, 09 Aug 2010 03:01:36 +0000]]></pubdate>
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