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 <title><![CDATA[新手提问,老鸟别笑]]></title>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-69224.html]]></link>
 <description><![CDATA[Latest 50 replies of 新手提问,老鸟别笑]]></description>
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 <description><![CDATA[工控人家园]]></description>
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 <title><![CDATA[]]></title>
 <description><![CDATA[果然是小鸟]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-69224#839459.html]]></link>
 <author><![CDATA[wtx4627]]></author>
 <category><![CDATA[三菱工控论坛]]></category>
 <pubdate><![CDATA[Sat, 31 Jul 2010 08:54:15 +0000]]></pubdate>
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 <title><![CDATA[]]></title>
 <description><![CDATA[[s:32] 最好讲讲应用实例]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-69224#839405.html]]></link>
 <author><![CDATA[51764351]]></author>
 <category><![CDATA[三菱工控论坛]]></category>
 <pubdate><![CDATA[Sat, 31 Jul 2010 06:13:04 +0000]]></pubdate>
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<item>
 <title><![CDATA[]]></title>
 <description><![CDATA[上百度搜视频]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-69224#834256.html]]></link>
 <author><![CDATA[yrm319ld]]></author>
 <category><![CDATA[三菱工控论坛]]></category>
 <pubdate><![CDATA[Fri, 23 Jul 2010 07:25:02 +0000]]></pubdate>
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 <title><![CDATA[]]></title>
 <description><![CDATA[PLC的说明书上就有说明]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-69224#825674.html]]></link>
 <author><![CDATA[amifs]]></author>
 <category><![CDATA[三菱工控论坛]]></category>
 <pubdate><![CDATA[Sat, 10 Jul 2010 12:15:54 +0000]]></pubdate>
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 <title><![CDATA[]]></title>
 <description><![CDATA[楼上均为正解]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-69224#825049.html]]></link>
 <author><![CDATA[blueschar]]></author>
 <category><![CDATA[三菱工控论坛]]></category>
 <pubdate><![CDATA[Fri, 09 Jul 2010 13:00:29 +0000]]></pubdate>
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 <title><![CDATA[]]></title>
 <description><![CDATA[谢谢各位
,已经理解了]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-69224#823746.html]]></link>
 <author><![CDATA[xm372494067]]></author>
 <category><![CDATA[三菱工控论坛]]></category>
 <pubdate><![CDATA[Wed, 07 Jul 2010 14:14:39 +0000]]></pubdate>
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 <title><![CDATA[]]></title>
 <description><![CDATA[以上都回答的很清楚
祝你好运]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-69224#822856.html]]></link>
 <author><![CDATA[yuan3421]]></author>
 <category><![CDATA[三菱工控论坛]]></category>
 <pubdate><![CDATA[Tue, 06 Jul 2010 08:04:41 +0000]]></pubdate>
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 <title><![CDATA[]]></title>
 <description><![CDATA[LDP上升沿有效指令&nbsp;&nbsp;只在上升沿为ON&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;

比如LDM0&nbsp;&nbsp;当M0从0变到1的时候 

这个瞬间触发]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-69224#821982.html]]></link>
 <author><![CDATA[zichen8716]]></author>
 <category><![CDATA[三菱工控论坛]]></category>
 <pubdate><![CDATA[Mon, 05 Jul 2010 02:23:31 +0000]]></pubdate>
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 <title><![CDATA[]]></title>
 <description><![CDATA[&nbsp;&nbsp;&nbsp;&nbsp;比如LDP X0，在梯形图上则表示为┤↑├，不妨称之为“X0的上升沿接点”；当X0由断开到接通时，“X0的上升沿接点”会短暂接通（一个扫描周期）；此后，虽然X0是接通的，但“X0的上升沿接点”是断开的。
&nbsp;&nbsp;&nbsp;&nbsp;微分电路或可比拟。
&nbsp;&nbsp;&nbsp;&nbsp;又如，一直流电压加于 ..]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-69224#821870.html]]></link>
 <author><![CDATA[qlin]]></author>
 <category><![CDATA[三菱工控论坛]]></category>
 <pubdate><![CDATA[Sun, 04 Jul 2010 22:38:00 +0000]]></pubdate>
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 <title><![CDATA[]]></title>
 <description><![CDATA[LDP为上升沿脉冲，接通输出一个扫描周期的脉冲。
LDF为下降沿脉冲，接通在断开时输出一个扫描周期的脉冲。
可以用三菱的仿真软件看看它的具体动作过程就很明白了。]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-69224#821744.html]]></link>
 <author><![CDATA[5921338]]></author>
 <category><![CDATA[三菱工控论坛]]></category>
 <pubdate><![CDATA[Sun, 04 Jul 2010 13:31:28 +0000]]></pubdate>
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 <title><![CDATA[]]></title>
 <description><![CDATA[上升沿脉冲。接通瞬间有效 ldp
下降沿脉冲。断开瞬间有效 ldf]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-69224#821690.html]]></link>
 <author><![CDATA[yerong]]></author>
 <category><![CDATA[三菱工控论坛]]></category>
 <pubdate><![CDATA[Sun, 04 Jul 2010 12:43:24 +0000]]></pubdate>
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 <title><![CDATA[]]></title>
 <description><![CDATA[实践一下，你就明白了。理解不了，继续钻。要有毅力。这问题简单，看一下说明书。]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-69224#821660.html]]></link>
 <author><![CDATA[xtl123925]]></author>
 <category><![CDATA[三菱工控论坛]]></category>
 <pubdate><![CDATA[Sun, 04 Jul 2010 11:56:08 +0000]]></pubdate>
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 <title><![CDATA[]]></title>
 <description><![CDATA[才问几分钟就迫不及待了，学这个没耐心是不行的[s:17]]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-69224#821657.html]]></link>
 <author><![CDATA[lcl1990]]></author>
 <category><![CDATA[三菱工控论坛]]></category>
 <pubdate><![CDATA[Sun, 04 Jul 2010 11:49:32 +0000]]></pubdate>
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 <title><![CDATA[]]></title>
 <description><![CDATA[没有人愿回答 [s:28]]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-69224#821654.html]]></link>
 <author><![CDATA[xm372494067]]></author>
 <category><![CDATA[三菱工控论坛]]></category>
 <pubdate><![CDATA[Sun, 04 Jul 2010 11:47:15 +0000]]></pubdate>
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