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 <title><![CDATA[PLC是怎样产生脉冲信号的？]]></title>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-1410462.html]]></link>
 <description><![CDATA[Latest 50 replies of PLC是怎样产生脉冲信号的？]]></description>
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 <description><![CDATA[如果CPU本身有高速脉冲输出模块可以直接用。也可以增加定位模块EM253来做。]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-1410462#1376828.html]]></link>
 <author><![CDATA[zdh159265]]></author>
 <category><![CDATA[西门子工控论坛]]></category>
 <pubdate><![CDATA[Tue, 13 Nov 2012 03:15:13 +0000]]></pubdate>
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 <description><![CDATA[西门子S7-200和三荾Fn PLC都有两个高速脉冲输出.]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-1410462#1376177.html]]></link>
 <author><![CDATA[hexdho]]></author>
 <category><![CDATA[西门子工控论坛]]></category>
 <pubdate><![CDATA[Mon, 12 Nov 2012 03:37:20 +0000]]></pubdate>
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 <description><![CDATA[要具体看plc型号定的，有的plc内置高速脉冲输出，有的需要加脉冲模块。]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-1410462#1370004.html]]></link>
 <author><![CDATA[秋后一点水]]></author>
 <category><![CDATA[西门子工控论坛]]></category>
 <pubdate><![CDATA[Thu, 01 Nov 2012 12:12:24 +0000]]></pubdate>
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