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 <title><![CDATA[关于PLSV指令]]></title>
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 <description><![CDATA[Latest 50 replies of 关于PLSV指令]]></description>
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 <description><![CDATA[正反转是相对的，以300的速度向相反方向运行]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-1381991#1292434.html]]></link>
 <author><![CDATA[zhangwanghua]]></author>
 <category><![CDATA[三菱工控论坛]]></category>
 <pubdate><![CDATA[Fri, 22 Jun 2012 08:02:23 +0000]]></pubdate>
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<item>
 <title><![CDATA[]]></title>
 <description><![CDATA[楼上正解]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-1381991#1292028.html]]></link>
 <author><![CDATA[ak_42bl]]></author>
 <category><![CDATA[三菱工控论坛]]></category>
 <pubdate><![CDATA[Thu, 21 Jun 2012 10:07:53 +0000]]></pubdate>
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 <title><![CDATA[]]></title>
 <description><![CDATA[编程手册上说的明明白白。正反方向的指定，根据输出脉冲频率的正负符号决定，而旋转方向信号（就是你上边的Y3）又是对应脉冲输出频率的正负情况决定它的动作，频率为正数时Y3接通，频率为负数时Y3断开。]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-1381991#1291898.html]]></link>
 <author><![CDATA[汇荣铝业]]></author>
 <category><![CDATA[三菱工控论坛]]></category>
 <pubdate><![CDATA[Thu, 21 Jun 2012 07:05:59 +0000]]></pubdate>
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