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 <title><![CDATA[称重仪表4-20MA]]></title>
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 <description><![CDATA[建议用通讯&nbsp;&nbsp;直接读取数据&nbsp;&nbsp;]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-1633885#1930192.html]]></link>
 <author><![CDATA[yanglinggui]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Wed, 25 Oct 2017 03:24:16 +0000]]></pubdate>
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 <description><![CDATA[可以参考这个图看看，应该是干扰了。]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-1633885#1930021.html]]></link>
 <author><![CDATA[niguo1]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Tue, 24 Oct 2017 08:49:53 +0000]]></pubdate>
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 <title><![CDATA[]]></title>
 <description><![CDATA[Y=KX+B，取两个压力相差大点的值
Y：水压
X：PLC读取值]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-1633885#1929972.html]]></link>
 <author><![CDATA[zeroheaven]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Tue, 24 Oct 2017 04:45:09 +0000]]></pubdate>
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 <description><![CDATA[[quote]引用楼主cyh1986于2017-10-14 18:39发表的 称重仪表4-20MA :
柯力的称重仪，仪表4-20MA输出接到了三菱FX2N-2AD的上面，2AD已经校准过了。柯力仪表输出20ma时对应的是800KG，现在仪表显示65KG，PLC读取的数值是290左右，按照比例计算下来大概58KG。我是这样算的，290×800/4000。4000是2AD输入电流为20MA的值
58和6 ..]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-1633885#1929951.html]]></link>
 <author><![CDATA[stzn]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Tue, 24 Oct 2017 02:54:07 +0000]]></pubdate>
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 <description><![CDATA[我用过柯力的走模拟量和三菱的PLC，不行，数据变化大，精度不行，建议走通讯吧]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-1633885#1929934.html]]></link>
 <author><![CDATA[爱家爱china]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Tue, 24 Oct 2017 02:08:30 +0000]]></pubdate>
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 <title><![CDATA[]]></title>
 <description><![CDATA[4楼回答很全面&nbsp;&nbsp;]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-1633885#1928292.html]]></link>
 <author><![CDATA[rain江南]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Mon, 16 Oct 2017 07:53:32 +0000]]></pubdate>
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 <description><![CDATA[检查一下，看有没有干扰，，用模拟量读取容易受干扰，现在比较流行跟称重仪表走通讯]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-1633885#1928290.html]]></link>
 <author><![CDATA[1406606700]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Mon, 16 Oct 2017 07:39:12 +0000]]></pubdate>
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 <title><![CDATA[]]></title>
 <description><![CDATA[仪表4-20mA对应0-800KG。 PLC&nbsp;&nbsp;读取数值应该是 800-4000吧！
PLC重量=( PLC读取值-800)/(4000-800)/800=(PLC读取值-800)/4

仪表重量=800/(20-4) * (仪表输出毫安数-4)=50*(仪表输出毫安数-4)。
仪表显示65KG&nbsp;&nbsp;&nbsp;&nbsp;此时输出毫安值=65/50+4=1.3+4=5.3mA
PLC读取值=4000/20 *5.3=200*5.3=1060& ..]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-1633885#1928289.html]]></link>
 <author><![CDATA[akang8612]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Mon, 16 Oct 2017 07:38:54 +0000]]></pubdate>
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 <description><![CDATA[还差一个4mA的数值]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-1633885#1928286.html]]></link>
 <author><![CDATA[wangrenzhi]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Mon, 16 Oct 2017 07:21:11 +0000]]></pubdate>
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 <title><![CDATA[]]></title>
 <description><![CDATA[用数字电流表测测看多少电流]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-1633885#1928063.html]]></link>
 <author><![CDATA[stzn]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Sun, 15 Oct 2017 07:54:29 +0000]]></pubdate>
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 <title><![CDATA[]]></title>
 <description><![CDATA[没明白，仪表是和PLC一起接的？]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-1633885#1927940.html]]></link>
 <author><![CDATA[不小心遇见你]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Sat, 14 Oct 2017 12:02:30 +0000]]></pubdate>
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