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 <title><![CDATA[电能表通讯]]></title>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-1442179.html]]></link>
 <description><![CDATA[Latest 50 replies of 电能表通讯]]></description>
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 <description><![CDATA[电度表也有脉冲输出，可用PLC计数，转换成4--20MA再进DCS么。
也不知道脉冲电压是多少伏？
请高人指点一下。]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-1442179#1527182.html]]></link>
 <author><![CDATA[sanlihu]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Thu, 26 Dec 2013 01:46:41 +0000]]></pubdate>
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 <title><![CDATA[]]></title>
 <description><![CDATA[楼主不是说有485么，用485做]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-1442179#1514658.html]]></link>
 <author><![CDATA[shuai3982]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Mon, 25 Nov 2013 09:39:40 +0000]]></pubdate>
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 <description><![CDATA[现在DCS只有一路4-20MA信号了，也只要求曲线显示电表的一个实时有功功率就中
。]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-1442179#1514653.html]]></link>
 <author><![CDATA[sanlihu]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Mon, 25 Nov 2013 09:14:28 +0000]]></pubdate>
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 <title><![CDATA[]]></title>
 <description><![CDATA[不要光说硬件要说协议？]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-1442179#1508883.html]]></link>
 <author><![CDATA[yamqq]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Tue, 12 Nov 2013 12:30:02 +0000]]></pubdate>
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 <title><![CDATA[]]></title>
 <description><![CDATA[就是加个用485通信模块在DCS定时读取电表里面的参数,,在DCS里面记录,然后用数据生成曲线不久行,]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-1442179#1508880.html]]></link>
 <author><![CDATA[rockyhuo]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Tue, 12 Nov 2013 12:21:01 +0000]]></pubdate>
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