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 <title><![CDATA[这个PLC程序该怎么写？]]></title>
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 <description><![CDATA[Latest 50 replies of 这个PLC程序该怎么写？]]></description>
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 <title><![CDATA[]]></title>
 <description><![CDATA[以上的程序都比较烦
ld&nbsp;&nbsp;x0&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; altp&nbsp;&nbsp;y0
ld x1&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;alto&nbsp;&nbsp; y1
其余的自加了]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-1406539#1359941.html]]></link>
 <author><![CDATA[terence1234]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Wed, 17 Oct 2012 02:36:36 +0000]]></pubdate>
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 <title><![CDATA[]]></title>
 <description><![CDATA[交替指令]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-1406539#1358791.html]]></link>
 <author><![CDATA[ccy5156]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Mon, 15 Oct 2012 03:33:12 +0000]]></pubdate>
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 <title><![CDATA[]]></title>
 <description><![CDATA[UP
可以噶]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-1406539#1358576.html]]></link>
 <author><![CDATA[hacker123]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Sun, 14 Oct 2012 15:36:34 +0000]]></pubdate>
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 <title><![CDATA[]]></title>
 <description><![CDATA[小试一下。计数器选C100，带记忆功能。 [attachment=93888]]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-1406539#1358574.html]]></link>
 <author><![CDATA[xcvcx]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Sun, 14 Oct 2012 15:23:43 +0000]]></pubdate>
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 <title><![CDATA[]]></title>
 <description><![CDATA[比较指令也可以啊]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-1406539#1358157.html]]></link>
 <author><![CDATA[miaotiaozi]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Sat, 13 Oct 2012 15:29:09 +0000]]></pubdate>
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 <title><![CDATA[]]></title>
 <description><![CDATA[怎么停自己加&#160;&#160; 不知道你的详细要求是什么&nbsp;&nbsp; Y0控制向上&nbsp;&nbsp; Y1控制向下&nbsp;&nbsp; 第二次按下复位]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-1406539#1358156.html]]></link>
 <author><![CDATA[工控—魔术师]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Sat, 13 Oct 2012 15:28:50 +0000]]></pubdate>
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 <title><![CDATA[]]></title>
 <description><![CDATA[用交换指令 [s:21]]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-1406539#1358110.html]]></link>
 <author><![CDATA[yzc110]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Sat, 13 Oct 2012 13:25:23 +0000]]></pubdate>
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 <title><![CDATA[]]></title>
 <description><![CDATA[用一个ALT交替指令就行了。]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-1406539#1358102.html]]></link>
 <author><![CDATA[z4131246]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Sat, 13 Oct 2012 13:14:28 +0000]]></pubdate>
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 <title><![CDATA[]]></title>
 <description><![CDATA[看看是不是这个意思]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-1406539#1358083.html]]></link>
 <author><![CDATA[协手闯天下]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Sat, 13 Oct 2012 12:35:13 +0000]]></pubdate>
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 <title><![CDATA[]]></title>
 <description><![CDATA[[quote]引用楼主chouchangke于2012-10-13 20:26发表的 这个PLC程序该怎么写？ :
第一次碰到该行程开关，动作向上；第二次碰到该行程开关，动作向下。这个PLC程序该怎么写？
执行元件，电磁阀。
[/quote]
用计数器c]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-1406539#1358082.html]]></link>
 <author><![CDATA[zmy450365]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Sat, 13 Oct 2012 12:34:16 +0000]]></pubdate>
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