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 <title><![CDATA[步进电机正反转请高手帮忙？急急急]]></title>
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 <description><![CDATA[Latest 50 replies of 步进电机正反转请高手帮忙？急急急]]></description>
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 <description><![CDATA[2楼说的不错啊，步进电机驱动器控制器有正反输入，也可以通过外接继电器来改变电源的方向来改变方向。]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-143914#1232189.html]]></link>
 <author><![CDATA[aoouang]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Thu, 22 Mar 2012 08:24:10 +0000]]></pubdate>
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 <title><![CDATA[]]></title>
 <description><![CDATA[学习了 [s:21]]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-143914#1231775.html]]></link>
 <author><![CDATA[xiafei]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Wed, 21 Mar 2012 17:39:50 +0000]]></pubdate>
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 <description><![CDATA[步进电机改变方向，必须先停止脉冲。方向信号必须先于脉冲信号。]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-143914#1231755.html]]></link>
 <author><![CDATA[yimeng5132]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Wed, 21 Mar 2012 16:05:01 +0000]]></pubdate>
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 <title><![CDATA[]]></title>
 <description><![CDATA[先停下再加DIR 5V电压和脉冲看看 [s:21]]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-143914#1231604.html]]></link>
 <author><![CDATA[shi2999]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Wed, 21 Mar 2012 12:58:08 +0000]]></pubdate>
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