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 <title><![CDATA[液位开关如何与300系列PLC接线]]></title>
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 <description><![CDATA[Latest 50 replies of 液位开关如何与300系列PLC接线]]></description>
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 <description><![CDATA[我也来学习下]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-90861#939256.html]]></link>
 <author><![CDATA[天锋]]></author>
 <category><![CDATA[西门子工控论坛]]></category>
 <pubdate><![CDATA[Thu, 23 Dec 2010 13:14:14 +0000]]></pubdate>
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 <title><![CDATA[]]></title>
 <description><![CDATA[三线制液位开关包含二个可能。1）纯开关的液位开关【公共点及NO/NC组成】 2）电子式即二条是电源线，另一条是PNP/NPN的输出连接线。]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-90861#938837.html]]></link>
 <author><![CDATA[wwcwwc]]></author>
 <category><![CDATA[西门子工控论坛]]></category>
 <pubdate><![CDATA[Thu, 23 Dec 2010 07:18:03 +0000]]></pubdate>
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 <description><![CDATA[液位开关一般都是开关量,可直接连接和按纽一样]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-90861#938784.html]]></link>
 <author><![CDATA[lzxp100]]></author>
 <category><![CDATA[西门子工控论坛]]></category>
 <pubdate><![CDATA[Thu, 23 Dec 2010 06:18:59 +0000]]></pubdate>
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 <description><![CDATA[开光的说明书上没有电气图吗]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-90861#931595.html]]></link>
 <author><![CDATA[xiaolianglxk]]></author>
 <category><![CDATA[西门子工控论坛]]></category>
 <pubdate><![CDATA[Wed, 15 Dec 2010 08:45:02 +0000]]></pubdate>
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