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 <title><![CDATA[modbus通讯]]></title>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-1548151.html]]></link>
 <description><![CDATA[Latest 50 replies of modbus通讯]]></description>
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 <description><![CDATA[看一下s7-200smart选型手册就OK！]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-1548151#1797841.html]]></link>
 <author><![CDATA[二手工控电器]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Tue, 26 Jul 2016 21:54:40 +0000]]></pubdate>
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 <description><![CDATA[我现在在做的项目是用s7-200smart和两个相同的仪表，plc不仅要同时与两个仪表通许，而且还要与触摸屏通讯，但plc只有一个CPU本体集成通讯口和一个通信信号版（SB COM1），还能在扩展一个通讯口吗？如果可以，请问如何扩展，谢谢！！！]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-1548151#1797751.html]]></link>
 <author><![CDATA[wu123456]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Tue, 26 Jul 2016 13:42:35 +0000]]></pubdate>
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 <description><![CDATA[485通讯]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-1548151#1797173.html]]></link>
 <author><![CDATA[小八哥]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Mon, 25 Jul 2016 02:34:05 +0000]]></pubdate>
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 <title><![CDATA[]]></title>
 <description><![CDATA[1楼 说的对&nbsp;&nbsp;]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-1548151#1797141.html]]></link>
 <author><![CDATA[zhuyikang]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Mon, 25 Jul 2016 01:16:49 +0000]]></pubdate>
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 <title><![CDATA[]]></title>
 <description><![CDATA[每个仪表对应一个站号，只要站号不重复就可以了。]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-1548151#1797130.html]]></link>
 <author><![CDATA[source08]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Mon, 25 Jul 2016 00:46:24 +0000]]></pubdate>
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