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 <title><![CDATA[“自由口通信”有问，请教一下高手们。]]></title>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-1420630.html]]></link>
 <description><![CDATA[Latest 50 replies of “自由口通信”有问，请教一下高手们。]]></description>
 <copyright><![CDATA[Copyright(C) 工控人家园]]></copyright>
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 <lastBuildDate><![CDATA[Sat, 16 May 2026 16:59:38 +0000]]></lastBuildDate>
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 <description><![CDATA[工控人家园]]></description>
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 <title><![CDATA[]]></title>
 <description><![CDATA[双方面协议都是要的，具体的可以参考选用Plc通信手册，很详细的]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-1420630#1416008.html]]></link>
 <author><![CDATA[百年糊涂]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Tue, 05 Mar 2013 11:17:19 +0000]]></pubdate>
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 <title><![CDATA[]]></title>
 <description><![CDATA[多谢高手了]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-1420630#1415882.html]]></link>
 <author><![CDATA[panchaoren]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Tue, 05 Mar 2013 03:52:33 +0000]]></pubdate>
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<item>
 <title><![CDATA[]]></title>
 <description><![CDATA[就是通信协议是你自己定的算法也是你自己写的]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-1420630#1415466.html]]></link>
 <author><![CDATA[yamqq]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Mon, 04 Mar 2013 01:15:15 +0000]]></pubdate>
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 <title><![CDATA[]]></title>
 <description><![CDATA[PLC和上位机都要写对应的程序。
协议是你自己定的]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-1420630#1414887.html]]></link>
 <author><![CDATA[bigluo]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Fri, 01 Mar 2013 12:56:14 +0000]]></pubdate>
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 <title><![CDATA[]]></title>
 <description><![CDATA[pc跟PLC通讯一般用PLC的上位机连接协议，自由通讯协议一般用于PLC与其他设备/仪表通讯用；也就是在PLC上根据所连接设备的协议格式写协议]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-1420630#1414857.html]]></link>
 <author><![CDATA[xuefenfeilxw]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Fri, 01 Mar 2013 11:14:58 +0000]]></pubdate>
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