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 <title><![CDATA[传感器的接法问题]]></title>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-1448636.html]]></link>
 <description><![CDATA[Latest 50 replies of 传感器的接法问题]]></description>
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 <title><![CDATA[]]></title>
 <description><![CDATA[[s:26]&nbsp;&nbsp;[s:21]&nbsp;&nbsp;[s:28]&nbsp;&nbsp;[s:32]&nbsp;&nbsp;[s:39]]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-1448636#1545478.html]]></link>
 <author><![CDATA[baijun]]></author>
 <category><![CDATA[西门子工控论坛]]></category>
 <pubdate><![CDATA[Thu, 06 Mar 2014 11:52:38 +0000]]></pubdate>
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 <title><![CDATA[]]></title>
 <description><![CDATA[楼主&nbsp;&nbsp; 请注意你PLC的COM端是0V还是24V]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-1448636#1545342.html]]></link>
 <author><![CDATA[拐拐栋]]></author>
 <category><![CDATA[西门子工控论坛]]></category>
 <pubdate><![CDATA[Thu, 06 Mar 2014 03:04:22 +0000]]></pubdate>
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 <title><![CDATA[]]></title>
 <description><![CDATA[日式PLC都是NPN输入，欧美大都是PNP输入 [s:21]]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-1448636#1545250.html]]></link>
 <author><![CDATA[富阳工控]]></author>
 <category><![CDATA[西门子工控论坛]]></category>
 <pubdate><![CDATA[Wed, 05 Mar 2014 15:10:07 +0000]]></pubdate>
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 <title><![CDATA[]]></title>
 <description><![CDATA[楼上说得对，不可能两根线同时接在输入端，三线制 就是一正一负一信号，检查蓝线与负极联通。]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-1448636#1545205.html]]></link>
 <author><![CDATA[bakey533]]></author>
 <category><![CDATA[西门子工控论坛]]></category>
 <pubdate><![CDATA[Wed, 05 Mar 2014 12:49:24 +0000]]></pubdate>
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 <title><![CDATA[]]></title>
 <description><![CDATA[传感器三线制的，棕十蓝一，黑色为输出，产品说明书上有标示，若黑色输出为负即为NpN，输出为正为PNp，你两条线这样接起来，我还没试过，应该只是PLc灯亮，沒起到感应作用！若回答有误请见谅！]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-1448636#1542244.html]]></link>
 <author><![CDATA[yushengquan]]></author>
 <category><![CDATA[西门子工控论坛]]></category>
 <pubdate><![CDATA[Mon, 24 Feb 2014 00:27:04 +0000]]></pubdate>
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