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 <title><![CDATA[EM231 的模拟量输入通道上接了一个500RW  ..]]></title>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-1470151.html]]></link>
 <description><![CDATA[Latest 50 replies of EM231 的模拟量输入通道上接了一个500RW  ..]]></description>
 <copyright><![CDATA[Copyright(C) 工控人家园]]></copyright>
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 <lastBuildDate><![CDATA[Tue, 19 May 2026 03:32:17 +0000]]></lastBuildDate>
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 <title><![CDATA[]]></title>
 <description><![CDATA[谢谢&nbsp;&nbsp;楼上的]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-1470151#1613924.html]]></link>
 <author><![CDATA[quzhihua]]></author>
 <category><![CDATA[西门子工控论坛]]></category>
 <pubdate><![CDATA[Mon, 27 Oct 2014 08:09:50 +0000]]></pubdate>
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 <title><![CDATA[]]></title>
 <description><![CDATA[有种情况是模块只能接收0-10V电压,而仪表或传感器只有4-20ma电流输出,

接个电阻的目的是20ma的电流流过500欧姆的电阻,那么电阻二端的电压就 是500*20/1000=10V]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-1470151#1613465.html]]></link>
 <author><![CDATA[tkggtdkjpl]]></author>
 <category><![CDATA[西门子工控论坛]]></category>
 <pubdate><![CDATA[Sat, 25 Oct 2014 13:24:35 +0000]]></pubdate>
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 <title><![CDATA[]]></title>
 <description><![CDATA[有知道的吗？？]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-1470151#1612074.html]]></link>
 <author><![CDATA[quzhihua]]></author>
 <category><![CDATA[西门子工控论坛]]></category>
 <pubdate><![CDATA[Tue, 21 Oct 2014 08:07:02 +0000]]></pubdate>
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