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 <title><![CDATA[求解释]]></title>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-1540664.html]]></link>
 <description><![CDATA[Latest 50 replies of 求解释]]></description>
 <copyright><![CDATA[Copyright(C) 工控人家园]]></copyright>
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 <description><![CDATA[这是一个SFC图，x1是接停止按钮，X0是接启动按钮，当X0被按下后，跳至S20 Y0线圈动作，5秒后跳至S21，Y1线圈动作，5秒后跳至S22 ， Y2线圈动作，5秒后跳至S23 ， Y3线圈动作，x1按下后全部S20至S30全部RST。]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-1540664#1754654.html]]></link>
 <author><![CDATA[pengdehui]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Wed, 23 Mar 2016 07:30:09 +0000]]></pubdate>
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 <description><![CDATA[下载看看]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-1540664#1754249.html]]></link>
 <author><![CDATA[往事如风]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Tue, 22 Mar 2016 07:52:35 +0000]]></pubdate>
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 <description><![CDATA[x0停止，X1启动，按下X1后，Y1启动后，5秒启动Y2，Y2启动后，5秒启动Y3，这样启动顺序]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-1540664#1754163.html]]></link>
 <author><![CDATA[风华少爷]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Tue, 22 Mar 2016 05:36:47 +0000]]></pubdate>
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