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 <title><![CDATA[奇怪的接近开关输入问题]]></title>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-111785.html]]></link>
 <description><![CDATA[Latest 50 replies of 奇怪的接近开关输入问题]]></description>
 <copyright><![CDATA[Copyright(C) 工控人家园]]></copyright>
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 <description><![CDATA[额，这个问题看下说明书就能解决的，FX的内部24V电源回路和外部的是不能随便短接滴]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-111785#1080809.html]]></link>
 <author><![CDATA[rosephy]]></author>
 <category><![CDATA[三菱工控论坛]]></category>
 <pubdate><![CDATA[Tue, 28 Jun 2011 04:32:51 +0000]]></pubdate>
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 <description><![CDATA[谢谢大家关注，问题已解决。问题出在：由于别的原因，这台机的PLC和接近开关用的不是同一个开关电源，我后来把接近开关与　PLC共用一个开关电源问题解决了，PLC输入侧的COM不用与外部电源的负极短接（当然可能短接也行，反正我没短接也行）。谢谢大家！]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-111785#1080494.html]]></link>
 <author><![CDATA[358273433]]></author>
 <category><![CDATA[三菱工控论坛]]></category>
 <pubdate><![CDATA[Mon, 27 Jun 2011 13:33:27 +0000]]></pubdate>
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 <title><![CDATA[]]></title>
 <description><![CDATA[这个问题&nbsp;&nbsp;我也遇到&nbsp;&nbsp;把PLC COM端 接24+&nbsp;&nbsp;接近开关&nbsp;&nbsp;有的能正常给PLC 信号 总共11个接近开关 7个能正常给信号&nbsp;&nbsp;4个不能正常给信号，是NPN 型的&nbsp;&nbsp;三菱PLC FX1N60-MT&nbsp;&nbsp;但光电开关不一样光电开关能正常给信号，以前我在一家公司做，用的是全部是光电 ..]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-111785#1079799.html]]></link>
 <author><![CDATA[nangua]]></author>
 <category><![CDATA[三菱工控论坛]]></category>
 <pubdate><![CDATA[Sun, 26 Jun 2011 14:30:35 +0000]]></pubdate>
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 <title><![CDATA[]]></title>
 <description><![CDATA[楼上的说的正确]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-111785#1079780.html]]></link>
 <author><![CDATA[追风使者]]></author>
 <category><![CDATA[三菱工控论坛]]></category>
 <pubdate><![CDATA[Sun, 26 Jun 2011 14:17:09 +0000]]></pubdate>
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 <title><![CDATA[]]></title>
 <description><![CDATA[你要把外部电源的负极与PLC的COM连起来，这样就可以了，我刚装了一台机就是这样的，不连起来是没有信号的]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-111785#1078125.html]]></link>
 <author><![CDATA[黄忠]]></author>
 <category><![CDATA[三菱工控论坛]]></category>
 <pubdate><![CDATA[Fri, 24 Jun 2011 11:59:32 +0000]]></pubdate>
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 <title><![CDATA[]]></title>
 <description><![CDATA[10楼说得正确]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-111785#1077830.html]]></link>
 <author><![CDATA[feng771215]]></author>
 <category><![CDATA[三菱工控论坛]]></category>
 <pubdate><![CDATA[Fri, 24 Jun 2011 03:49:31 +0000]]></pubdate>
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 <title><![CDATA[]]></title>
 <description><![CDATA[1.&nbsp;&nbsp;看近接是npn的NO输出还是NC输出。2.plc接受的是npn的近接还是pnp的近接。]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-111785#1077815.html]]></link>
 <author><![CDATA[nimuling]]></author>
 <category><![CDATA[三菱工控论坛]]></category>
 <pubdate><![CDATA[Fri, 24 Jun 2011 03:36:43 +0000]]></pubdate>
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 <title><![CDATA[]]></title>
 <description><![CDATA[嗯，求证一下比较印象深刻。]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-111785#1077776.html]]></link>
 <author><![CDATA[330209]]></author>
 <category><![CDATA[三菱工控论坛]]></category>
 <pubdate><![CDATA[Fri, 24 Jun 2011 02:56:54 +0000]]></pubdate>
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 <title><![CDATA[]]></title>
 <description><![CDATA[这个 应该是最基本的常识吧。。说明书上到处都能找到答案]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-111785#1077773.html]]></link>
 <author><![CDATA[ztp]]></author>
 <category><![CDATA[三菱工控论坛]]></category>
 <pubdate><![CDATA[Fri, 24 Jun 2011 02:54:35 +0000]]></pubdate>
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 <title><![CDATA[]]></title>
 <description><![CDATA[楼上你说的对]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-111785#1077772.html]]></link>
 <author><![CDATA[小布点]]></author>
 <category><![CDATA[三菱工控论坛]]></category>
 <pubdate><![CDATA[Fri, 24 Jun 2011 02:54:29 +0000]]></pubdate>
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 <title><![CDATA[]]></title>
 <description><![CDATA[10楼和11楼的关于COM接法我感觉应该是NPN的PLC的COM端接电源24V才对的吧]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-111785#1077765.html]]></link>
 <author><![CDATA[330209]]></author>
 <category><![CDATA[三菱工控论坛]]></category>
 <pubdate><![CDATA[Fri, 24 Jun 2011 02:50:46 +0000]]></pubdate>
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 <title><![CDATA[]]></title>
 <description><![CDATA[PLC&nbsp;&nbsp;什么型号,别不是用接PNP信号输入的接上了NPN信号吧。]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-111785#1077758.html]]></link>
 <author><![CDATA[w80859]]></author>
 <category><![CDATA[三菱工控论坛]]></category>
 <pubdate><![CDATA[Fri, 24 Jun 2011 02:46:28 +0000]]></pubdate>
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 <title><![CDATA[]]></title>
 <description><![CDATA[这要看你选的接近开关的类型&nbsp;&nbsp;PNP型 COM端接0V&nbsp;&nbsp; NPN型 COM端接+24V]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-111785#1077757.html]]></link>
 <author><![CDATA[小布点]]></author>
 <category><![CDATA[三菱工控论坛]]></category>
 <pubdate><![CDATA[Fri, 24 Jun 2011 02:46:08 +0000]]></pubdate>
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 <title><![CDATA[]]></title>
 <description><![CDATA[求教，是外部电源的正极接COM端呢还是负极接COM端？]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-111785#1077753.html]]></link>
 <author><![CDATA[330209]]></author>
 <category><![CDATA[三菱工控论坛]]></category>
 <pubdate><![CDATA[Fri, 24 Jun 2011 02:40:15 +0000]]></pubdate>
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 <title><![CDATA[]]></title>
 <description><![CDATA[我以前也与到过这样的问题，你把外部电源的负极并到PLC的输入端的COM上！希望能帮上忙]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-111785#1077691.html]]></link>
 <author><![CDATA[辛勤蜜蜂]]></author>
 <category><![CDATA[三菱工控论坛]]></category>
 <pubdate><![CDATA[Fri, 24 Jun 2011 01:31:40 +0000]]></pubdate>
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 <title><![CDATA[]]></title>
 <description><![CDATA[楼主你好
你的接近开关NPN型应该是输出低电平，接线应该是红色接电源+24V 蓝色接0V&nbsp;&nbsp;黑色是输出接PLC的输入端X&nbsp;&nbsp;另外你的PLC输入端侧的COM端接外接电源的+24v&nbsp;&nbsp;就OK 了。]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-111785#1077665.html]]></link>
 <author><![CDATA[小布点]]></author>
 <category><![CDATA[三菱工控论坛]]></category>
 <pubdate><![CDATA[Fri, 24 Jun 2011 01:02:07 +0000]]></pubdate>
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 <title><![CDATA[]]></title>
 <description><![CDATA[我也怀疑接近开关的0伏特端没与PLC的COM端相连所以没反应]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-111785#1077660.html]]></link>
 <author><![CDATA[拉驴汉]]></author>
 <category><![CDATA[三菱工控论坛]]></category>
 <pubdate><![CDATA[Fri, 24 Jun 2011 00:50:55 +0000]]></pubdate>
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 <title><![CDATA[]]></title>
 <description><![CDATA[接线问题
给plc 输出&nbsp;&nbsp;&nbsp;&nbsp;com短接ov&nbsp;&nbsp;
检查开关线]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-111785#1077657.html]]></link>
 <author><![CDATA[263286819]]></author>
 <category><![CDATA[三菱工控论坛]]></category>
 <pubdate><![CDATA[Fri, 24 Jun 2011 00:45:59 +0000]]></pubdate>
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 <title><![CDATA[]]></title>
 <description><![CDATA[问题就出于外部电源，你把外部电源的负极与PLC的电源负极连起来试试看]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-111785#1077521.html]]></link>
 <author><![CDATA[xlqlh]]></author>
 <category><![CDATA[三菱工控论坛]]></category>
 <pubdate><![CDATA[Thu, 23 Jun 2011 14:32:11 +0000]]></pubdate>
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 <title><![CDATA[]]></title>
 <description><![CDATA[我用的是外部电源，之前接的不用短接呀。我明天试一下，谢谢！]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-111785#1077490.html]]></link>
 <author><![CDATA[358273433]]></author>
 <category><![CDATA[三菱工控论坛]]></category>
 <pubdate><![CDATA[Thu, 23 Jun 2011 14:01:27 +0000]]></pubdate>
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 <title><![CDATA[]]></title>
 <description><![CDATA[我明天试一下，谢谢！]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-111785#1077478.html]]></link>
 <author><![CDATA[358273433]]></author>
 <category><![CDATA[三菱工控论坛]]></category>
 <pubdate><![CDATA[Thu, 23 Jun 2011 13:48:14 +0000]]></pubdate>
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 <title><![CDATA[]]></title>
 <description><![CDATA[你把接近开关的负极和PLC输入端的COM端要短接，才可以]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-111785#1077466.html]]></link>
 <author><![CDATA[zhy0011520]]></author>
 <category><![CDATA[三菱工控论坛]]></category>
 <pubdate><![CDATA[Thu, 23 Jun 2011 13:43:51 +0000]]></pubdate>
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 <title><![CDATA[奇怪的接近开关输入问题]]></title>
 <description><![CDATA[用24V两线制接近开关正极接PLC输入端+24V，负极-24V是没问题的呀。楼在截图吧]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-111785#1077432.html]]></link>
 <author><![CDATA[liuhuaxing]]></author>
 <category><![CDATA[三菱工控论坛]]></category>
 <pubdate><![CDATA[Thu, 23 Jun 2011 13:22:49 +0000]]></pubdate>
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 <title><![CDATA[]]></title>
 <description><![CDATA[难道连接线断了？]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-111785#1077426.html]]></link>
 <author><![CDATA[wfb610]]></author>
 <category><![CDATA[三菱工控论坛]]></category>
 <pubdate><![CDATA[Thu, 23 Jun 2011 13:17:10 +0000]]></pubdate>
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 <title><![CDATA[]]></title>
 <description><![CDATA[取PLC的 +24V和-24V电压 按道理应该可以的&nbsp;&nbsp;NPN接近开关输出应该是-24V 接PLC输入端应该有信号啊 还有可能PLC是+24V输入 我还没碰到这种问题]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-111785#1077423.html]]></link>
 <author><![CDATA[wsx681980]]></author>
 <category><![CDATA[三菱工控论坛]]></category>
 <pubdate><![CDATA[Thu, 23 Jun 2011 13:15:27 +0000]]></pubdate>
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