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 <title><![CDATA[西门子S7-200PLC主从通信用什么样的电缆连 ..]]></title>
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 <description><![CDATA[用屏蔽双绞线，接头用专用九针接头网络连接器，要注意终端电阻拨码位置，通讯地址不能相同，波特率必须一致。]]></description>
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 <author><![CDATA[请叫我老六]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Tue, 18 Oct 2016 13:15:50 +0000]]></pubdate>
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 <description><![CDATA[求助 [s:39]&nbsp;&nbsp;[s:39] 
这一块已经拖了好久了。。。]]></description>
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 <author><![CDATA[xingyun123]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Tue, 18 Oct 2016 12:55:18 +0000]]></pubdate>
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