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 <title><![CDATA[加急，菜鸟求助，状态图转换，12号失效。]]></title>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-49860.html]]></link>
 <description><![CDATA[Latest 50 replies of 加急，菜鸟求助，状态图转换，12号失效。]]></description>
 <copyright><![CDATA[Copyright(C) 工控人家园]]></copyright>
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 <title><![CDATA[工控人家园]]></title>
 <link><![CDATA[http://www.ymmfa.com]]></link>
 <description><![CDATA[工控人家园]]></description>
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 <title><![CDATA[]]></title>
 <description><![CDATA[hehe,看懂了，那个 Y1 K3 应该是 T0 K3]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-49860#667521.html]]></link>
 <author><![CDATA[zymzym]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Wed, 11 Nov 2009 09:42:20 +0000]]></pubdate>
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 <title><![CDATA[]]></title>
 <description><![CDATA[谢谢四楼，

不要步进指令啊，还是看不懂。]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-49860#667513.html]]></link>
 <author><![CDATA[zymzym]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Wed, 11 Nov 2009 09:21:43 +0000]]></pubdate>
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<item>
 <title><![CDATA[]]></title>
 <description><![CDATA[请参考 [attachment=31248]]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-49860#667504.html]]></link>
 <author><![CDATA[xinhaichehan]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Wed, 11 Nov 2009 09:13:23 +0000]]></pubdate>
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<item>
 <title><![CDATA[]]></title>
 <description><![CDATA[、实训要求
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;用PLC、变频器设计一个电动机的三速运行的控制系统。其控制要求如下：
按下起动按钮，电动机以30Hz速度运行，5s后转为45Hz速度运行，再过5s转为20Hz速度运行，按停止按钮，电动机即停止。

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;PLC的I/O分配
&n ..]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-49860#667498.html]]></link>
 <author><![CDATA[zymzym]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Wed, 11 Nov 2009 09:04:09 +0000]]></pubdate>
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 <title><![CDATA[]]></title>
 <description><![CDATA[我也觉得不对，是电子教案截图。]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-49860#667494.html]]></link>
 <author><![CDATA[zymzym]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Wed, 11 Nov 2009 09:01:06 +0000]]></pubdate>
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 <title><![CDATA[]]></title>
 <description><![CDATA[&nbsp;&nbsp;看不懂这里 Y1&nbsp;&nbsp;K3&nbsp;&nbsp;是不是搞错啊]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-49860#667491.html]]></link>
 <author><![CDATA[peidegin]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Wed, 11 Nov 2009 08:56:51 +0000]]></pubdate>
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