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 <title><![CDATA[PNP的输入模块怎样改成NPN类型]]></title>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-1375406.html]]></link>
 <description><![CDATA[Latest 50 replies of PNP的输入模块怎样改成NPN类型]]></description>
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 <title><![CDATA[]]></title>
 <description><![CDATA[用一个继电器模块转，方便的很]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-1375406#1290265.html]]></link>
 <author><![CDATA[秋后一点水]]></author>
 <category><![CDATA[西门子工控论坛]]></category>
 <pubdate><![CDATA[Mon, 18 Jun 2012 14:08:44 +0000]]></pubdate>
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<item>
 <title><![CDATA[]]></title>
 <description><![CDATA[信号输出那根线和高电位间并联个10K电阻，程序里取反即可，即传感器没有输出时PLC有信号输入，传感器有信号输入时PLC没有信号输入，很平时正好相反]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-1375406#1290190.html]]></link>
 <author><![CDATA[andy_zy]]></author>
 <category><![CDATA[西门子工控论坛]]></category>
 <pubdate><![CDATA[Mon, 18 Jun 2012 12:00:45 +0000]]></pubdate>
</item>
<item>
 <title><![CDATA[]]></title>
 <description><![CDATA[在信好线和高电位间并联个1-2k欧的电阻就行了.]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-1375406#1290152.html]]></link>
 <author><![CDATA[xyd_hsn10]]></author>
 <category><![CDATA[西门子工控论坛]]></category>
 <pubdate><![CDATA[Mon, 18 Jun 2012 11:09:40 +0000]]></pubdate>
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 <description><![CDATA[[quote]引用第4楼tudouputao于2012-05-19 20:58发表的&nbsp;&nbsp;:
在信好线和高电位间并联个4-5k欧的电阻就行了吧~~
[/quote]
加上拉电阻]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-1375406#1290141.html]]></link>
 <author><![CDATA[hbsylsq]]></author>
 <category><![CDATA[西门子工控论坛]]></category>
 <pubdate><![CDATA[Mon, 18 Jun 2012 10:59:03 +0000]]></pubdate>
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<item>
 <title><![CDATA[]]></title>
 <description><![CDATA[在信好线和高电位间并联个4-5k欧的电阻就行了吧~~]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-1375406#1270259.html]]></link>
 <author><![CDATA[tudouputao]]></author>
 <category><![CDATA[西门子工控论坛]]></category>
 <pubdate><![CDATA[Sat, 19 May 2012 12:58:12 +0000]]></pubdate>
</item>
<item>
 <title><![CDATA[]]></title>
 <description><![CDATA[继电器转换]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-1375406#1263748.html]]></link>
 <author><![CDATA[linsf]]></author>
 <category><![CDATA[西门子工控论坛]]></category>
 <pubdate><![CDATA[Thu, 10 May 2012 00:46:28 +0000]]></pubdate>
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 <title><![CDATA[]]></title>
 <description><![CDATA[买几个PNP的传感器也用不了多少钱吧。]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-1375406#1263621.html]]></link>
 <author><![CDATA[qq593276766]]></author>
 <category><![CDATA[西门子工控论坛]]></category>
 <pubdate><![CDATA[Wed, 09 May 2012 14:01:56 +0000]]></pubdate>
</item>
<item>
 <title><![CDATA[]]></title>
 <description><![CDATA[用继电器转啊]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-1375406#1263372.html]]></link>
 <author><![CDATA[励志照亮人生]]></author>
 <category><![CDATA[西门子工控论坛]]></category>
 <pubdate><![CDATA[Wed, 09 May 2012 07:59:34 +0000]]></pubdate>
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