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 <title><![CDATA[关于接近开关的问题]]></title>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-93750.html]]></link>
 <description><![CDATA[Latest 50 replies of 关于接近开关的问题]]></description>
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 <title><![CDATA[工控人家园]]></title>
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 <description><![CDATA[这种开关相当一磁性开关，感应了导通的，正负看你接的是哪一极]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-93750#961632.html]]></link>
 <author><![CDATA[1402370984]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Sat, 22 Jan 2011 05:16:40 +0000]]></pubdate>
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 <title><![CDATA[]]></title>
 <description><![CDATA[顶一下]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-93750#961538.html]]></link>
 <author><![CDATA[xvqinhai]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Sat, 22 Jan 2011 02:13:08 +0000]]></pubdate>
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 <title><![CDATA[]]></title>
 <description><![CDATA[我们这边一般棕色的 接24v&nbsp;&nbsp;&nbsp;&nbsp; 蓝色的接0v]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-93750#961516.html]]></link>
 <author><![CDATA[2004100519]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Sat, 22 Jan 2011 01:46:19 +0000]]></pubdate>
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 <title><![CDATA[]]></title>
 <description><![CDATA[有两根线的接近开关？我怎么没看过，应该不是接近开关吧？]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-93750#958351.html]]></link>
 <author><![CDATA[平凡人生]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Mon, 17 Jan 2011 07:51:28 +0000]]></pubdate>
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 <title><![CDATA[]]></title>
 <description><![CDATA[两线制的不分NPN或PNP，只是接法不同
如果用于NPN的PLC，棕色接PLC信号输入，蓝色接0V
如果用于PNP的PLC，棕色接24V，蓝色接PLC信号输入]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-93750#958338.html]]></link>
 <author><![CDATA[marcelinho]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Mon, 17 Jan 2011 07:41:07 +0000]]></pubdate>
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 <title><![CDATA[]]></title>
 <description><![CDATA[二线的接近开关，一根线接PLC的输入点，另外一根接电源，至于接DC24V+，还是接DC24V-，这个要取决于你的PLC对该段输入点的供的电源正负，漏型还是源型了。比如西门子PLC你的接近开关其中一根线接到I0.0上，另外一根接到DC24V上，那返回的信号为负信号，PLC的输入端1M就该接24V+。当接近开关接到信号I0.0就通。]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-93750#958276.html]]></link>
 <author><![CDATA[hejian96]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Mon, 17 Jan 2011 06:38:06 +0000]]></pubdate>
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 <title><![CDATA[]]></title>
 <description><![CDATA[一楼正解～]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-93750#958255.html]]></link>
 <author><![CDATA[wu32u2]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Mon, 17 Jan 2011 06:11:17 +0000]]></pubdate>
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 <title><![CDATA[]]></title>
 <description><![CDATA[支持7楼观点]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-93750#958244.html]]></link>
 <author><![CDATA[龙芯]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Mon, 17 Jan 2011 05:57:22 +0000]]></pubdate>
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 <title><![CDATA[]]></title>
 <description><![CDATA[[s:21] 楼上正解&nbsp;&nbsp;&nbsp;&nbsp;在补充一下&nbsp;&nbsp; 如果是OMRON&nbsp;&nbsp;的PLC&nbsp;&nbsp; COM口接的是正极&nbsp;&nbsp;&nbsp;&nbsp;就蓝色接负极&nbsp;&nbsp; 红色接PLC]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-93750#958177.html]]></link>
 <author><![CDATA[大脚丫]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Mon, 17 Jan 2011 04:01:30 +0000]]></pubdate>
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 <title><![CDATA[]]></title>
 <description><![CDATA[2线的近接开关没有什么NPN，PNP的，它就是代替行程开关类的了。红线接正极，蓝线在近接开关工作后输出的就是正极，前提是你的PLC的COM点必须是负极的才可以正常工作。]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-93750#958165.html]]></link>
 <author><![CDATA[dongfengname]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Mon, 17 Jan 2011 03:49:34 +0000]]></pubdate>
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 <title><![CDATA[]]></title>
 <description><![CDATA[不对的哦 也要看回路的，
NPN型PLC，信号接棕色&nbsp;&nbsp; 蓝色共起来
PNP型PLC，信号接蓝色&nbsp;&nbsp; 棕色共起来

2线的接近开关现在很多的]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-93750#957990.html]]></link>
 <author><![CDATA[sl0301]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Sun, 16 Jan 2011 15:30:42 +0000]]></pubdate>
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 <title><![CDATA[]]></title>
 <description><![CDATA[[quote]引用第5楼detect于2011-01-09 21:45发表的 : 
两线制接近开关， 
不妨就就把它看成一个有触点的行程开关 
PNP&nbsp;&nbsp;NPN 不管它了 
[/quote] 
接近开关就是梯形图的常开和常闭触电。区别就是接近通还是接近断]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-93750#957963.html]]></link>
 <author><![CDATA[ldq_yang]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Sun, 16 Jan 2011 14:53:10 +0000]]></pubdate>
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 <title><![CDATA[]]></title>
 <description><![CDATA[楼上正解。就是相当于一个干接点]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-93750#955534.html]]></link>
 <author><![CDATA[饭特稀]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Wed, 12 Jan 2011 15:03:25 +0000]]></pubdate>
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 <title><![CDATA[]]></title>
 <description><![CDATA[如果是两线，就把它看成一个行程开关接线就可以了]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-93750#955457.html]]></link>
 <author><![CDATA[xm372494067]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Wed, 12 Jan 2011 13:39:34 +0000]]></pubdate>
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 <title><![CDATA[]]></title>
 <description><![CDATA[两线制的接近开关很少见啊，UP主给个型号我开开眼界？学习学习]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-93750#953431.html]]></link>
 <author><![CDATA[tongguanld]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Mon, 10 Jan 2011 01:31:14 +0000]]></pubdate>
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 <title><![CDATA[]]></title>
 <description><![CDATA[一电源+,一信号,]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-93750#953428.html]]></link>
 <author><![CDATA[liang48222]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Mon, 10 Jan 2011 01:27:33 +0000]]></pubdate>
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 <title><![CDATA[]]></title>
 <description><![CDATA[能量守恒，电流形成回路才做功]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-93750#953418.html]]></link>
 <author><![CDATA[up116]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Mon, 10 Jan 2011 00:57:42 +0000]]></pubdate>
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<item>
 <title><![CDATA[]]></title>
 <description><![CDATA[呵呵，记住所有信号都要回流就行了]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-93750#953417.html]]></link>
 <author><![CDATA[up116]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Mon, 10 Jan 2011 00:56:27 +0000]]></pubdate>
</item>
<item>
 <title><![CDATA[]]></title>
 <description><![CDATA[二线制的接近开关是串联在PLC信号输入单元的光电耦合开关里面的/在安装开关前用万用表测接线端子的两头/在测得直流电压为正24V时/红表笔所接的那头接开关的正极/另一端面接负极/二线制的接近开关分为DC 与DO/就是我们所说的常闭和常开]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-93750#953415.html]]></link>
 <author><![CDATA[广东]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Mon, 10 Jan 2011 00:48:28 +0000]]></pubdate>
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 <title><![CDATA[]]></title>
 <description><![CDATA[1楼正解 [s:21]]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-93750#953389.html]]></link>
 <author><![CDATA[guansky168]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Sun, 09 Jan 2011 23:51:55 +0000]]></pubdate>
</item>
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 <title><![CDATA[]]></title>
 <description><![CDATA[两线制接近开关，
不妨就就把它看成一个有触点的行程开关
PNP&nbsp;&nbsp;NPN 不管它了]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-93750#953240.html]]></link>
 <author><![CDATA[detect]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Sun, 09 Jan 2011 13:45:17 +0000]]></pubdate>
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 <title><![CDATA[]]></title>
 <description><![CDATA[同意一楼的，说的很对]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-93750#953225.html]]></link>
 <author><![CDATA[zhao110]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Sun, 09 Jan 2011 13:32:30 +0000]]></pubdate>
</item>
<item>
 <title><![CDATA[]]></title>
 <description><![CDATA[接近开关上标有的，你没看到？]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-93750#953162.html]]></link>
 <author><![CDATA[ldq_yang]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Sun, 09 Jan 2011 12:50:05 +0000]]></pubdate>
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 <title><![CDATA[]]></title>
 <description><![CDATA[楼主还是把图发上来，大家才好共同探讨]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-93750#953134.html]]></link>
 <author><![CDATA[ysheng9099]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Sun, 09 Jan 2011 12:27:35 +0000]]></pubdate>
</item>
<item>
 <title><![CDATA[]]></title>
 <description><![CDATA[两线制的接近开关，一个串联在正极，一个串联在负极。两根线用完了，用什么接PLC?

应该是一根接负极或者正极。另一根接PLC的输入点。是NPN,还是PNP应该看PLC的

输入的要求。是共正极还是共负极]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-93750#953131.html]]></link>
 <author><![CDATA[mayanheng]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Sun, 09 Jan 2011 12:25:31 +0000]]></pubdate>
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