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 <title><![CDATA[看了让人晕乎的说明书]]></title>
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 <description><![CDATA[Latest 50 replies of 看了让人晕乎的说明书]]></description>
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 <description><![CDATA[谢谢回答]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-49480#666060.html]]></link>
 <author><![CDATA[langman]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Mon, 09 Nov 2009 07:57:10 +0000]]></pubdate>
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 <description><![CDATA[一，用询问讯息字串格式，这个是PLC发指令给变频器的格式
&nbsp;&nbsp;&nbsp;&nbsp; 而回应讯息格式是变频器返回信号给PLC的
二，写频率时用2001H，读频率时用2102H（频率设定值），2103H（频率实时值）]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-49480#663923.html]]></link>
 <author><![CDATA[hxl202319]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Fri, 06 Nov 2009 10:37:54 +0000]]></pubdate>
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