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 <title><![CDATA[FX2N-4AD&nbsp;&nbsp;+&nbsp;&nbsp;压力变 ..]]></title>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-1443415.html]]></link>
 <description><![CDATA[Latest 50 replies of FX2N-4AD&nbsp;&nbsp;+&nbsp;&nbsp;压力变 ..]]></description>
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 <title><![CDATA[]]></title>
 <description><![CDATA[学习中]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-1443415#1535799.html]]></link>
 <author><![CDATA[jinhaicao]]></author>
 <category><![CDATA[三菱工控论坛]]></category>
 <pubdate><![CDATA[Tue, 21 Jan 2014 03:34:06 +0000]]></pubdate>
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 <title><![CDATA[]]></title>
 <description><![CDATA[学习了~谢谢]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-1443415#1532968.html]]></link>
 <author><![CDATA[cj595307773]]></author>
 <category><![CDATA[三菱工控论坛]]></category>
 <pubdate><![CDATA[Fri, 10 Jan 2014 06:56:28 +0000]]></pubdate>
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 <title><![CDATA[]]></title>
 <description><![CDATA[学习了 [s:21]]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-1443415#1530571.html]]></link>
 <author><![CDATA[小市民]]></author>
 <category><![CDATA[三菱工控论坛]]></category>
 <pubdate><![CDATA[Fri, 03 Jan 2014 07:22:11 +0000]]></pubdate>
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 <title><![CDATA[]]></title>
 <description><![CDATA[表坏了，]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-1443415#1530248.html]]></link>
 <author><![CDATA[yiranrfx]]></author>
 <category><![CDATA[三菱工控论坛]]></category>
 <pubdate><![CDATA[Thu, 02 Jan 2014 12:54:19 +0000]]></pubdate>
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 <description><![CDATA[回8楼问题：
&nbsp;&nbsp;&nbsp;&nbsp;这个问题主要是由传感器本体或者中间连接导线受干扰引起的。大家知道传感器所谓的4-20mA实际上不一定在此数值范围，多数读到模拟量输入、输出模块后，数值或多或少地有一些偏差，这个是正常现象。
&nbsp;&nbsp;&nbsp;&nbsp;解决这个问题需要对传感器输入、输出进行校验，但是一般在现 ..]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-1443415#1527385.html]]></link>
 <author><![CDATA[wwcwwc]]></author>
 <category><![CDATA[三菱工控论坛]]></category>
 <pubdate><![CDATA[Thu, 26 Dec 2013 08:49:09 +0000]]></pubdate>
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 <title><![CDATA[]]></title>
 <description><![CDATA[顶~~~]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-1443415#1527147.html]]></link>
 <author><![CDATA[hzfy2013]]></author>
 <category><![CDATA[三菱工控论坛]]></category>
 <pubdate><![CDATA[Thu, 26 Dec 2013 00:54:03 +0000]]></pubdate>
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 <title><![CDATA[]]></title>
 <description><![CDATA[也来学习一下]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-1443415#1526217.html]]></link>
 <author><![CDATA[zjgsaaazcc]]></author>
 <category><![CDATA[三菱工控论坛]]></category>
 <pubdate><![CDATA[Mon, 23 Dec 2013 22:13:51 +0000]]></pubdate>
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 <title><![CDATA[]]></title>
 <description><![CDATA[自顶~~~~~]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-1443415#1524846.html]]></link>
 <author><![CDATA[hzfy2013]]></author>
 <category><![CDATA[三菱工控论坛]]></category>
 <pubdate><![CDATA[Fri, 20 Dec 2013 07:32:19 +0000]]></pubdate>
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 <description><![CDATA[不好意思，最近没在，回复8楼，编程中减去400，可行，可以大致反映出实际压力值，但是我想弄明白的是：实际测量无压力状态下压力变送器电流大小为8mA，跟理论值一样，那对应数字量应该是250，实际是400，这其中什么原因造成？怎么调整？谢谢]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-1443415#1524588.html]]></link>
 <author><![CDATA[hzfy2013]]></author>
 <category><![CDATA[三菱工控论坛]]></category>
 <pubdate><![CDATA[Thu, 19 Dec 2013 13:44:49 +0000]]></pubdate>
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 <title><![CDATA[]]></title>
 <description><![CDATA[学习了&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;谢谢]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-1443415#1521484.html]]></link>
 <author><![CDATA[sun.wei111]]></author>
 <category><![CDATA[三菱工控论坛]]></category>
 <pubdate><![CDATA[Thu, 12 Dec 2013 02:33:23 +0000]]></pubdate>
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 <title><![CDATA[]]></title>
 <description><![CDATA[回5楼问题，那你调整模拟量输入的偏移值，把这个400值偏移至0。方法：硬件调整offset。软件调整在模拟量输入寄存器的后面直接减掉400试试。]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-1443415#1520637.html]]></link>
 <author><![CDATA[wwcwwc]]></author>
 <category><![CDATA[三菱工控论坛]]></category>
 <pubdate><![CDATA[Tue, 10 Dec 2013 03:44:32 +0000]]></pubdate>
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 <title><![CDATA[]]></title>
 <description><![CDATA[谢谢各位，学习了]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-1443415#1520602.html]]></link>
 <author><![CDATA[mtjbydd]]></author>
 <category><![CDATA[三菱工控论坛]]></category>
 <pubdate><![CDATA[Tue, 10 Dec 2013 02:52:31 +0000]]></pubdate>
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 <title><![CDATA[]]></title>
 <description><![CDATA[学习，学习，谢谢]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-1443415#1518860.html]]></link>
 <author><![CDATA[成功学习]]></author>
 <category><![CDATA[三菱工控论坛]]></category>
 <pubdate><![CDATA[Thu, 05 Dec 2013 07:04:10 +0000]]></pubdate>
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 <title><![CDATA[]]></title>
 <description><![CDATA[但是实际机器上运行时在无压力状态下4AD检测模拟量转换成数字量后是400左右，跟计算有出入，有大神知道这是什么原因吗？]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-1443415#1518813.html]]></link>
 <author><![CDATA[hzfy2013]]></author>
 <category><![CDATA[三菱工控论坛]]></category>
 <pubdate><![CDATA[Thu, 05 Dec 2013 04:44:10 +0000]]></pubdate>
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 <title><![CDATA[]]></title>
 <description><![CDATA[模拟量转换成数字量范围对应应该是0-1000吧？]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-1443415#1518799.html]]></link>
 <author><![CDATA[hzfy2013]]></author>
 <category><![CDATA[三菱工控论坛]]></category>
 <pubdate><![CDATA[Thu, 05 Dec 2013 03:53:27 +0000]]></pubdate>
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 <title><![CDATA[]]></title>
 <description><![CDATA[给你个公式&nbsp;&nbsp;[attachment=115243] 
假设当前取到的模拟值为2000，-1~3bar =&#160;&#160;4~20mA&#160;&#160;= 800~4000
X=2000，XH=4000，XL=800，YH=3，YL=-1
Y={((2000-800)/(4000-800))}X((3-(-1))+(-1)=0.5par
 [attachment=115242] 
D0：当前模拟信号的数字值（800——4000，实时数值）
D10：当前压力实时模 ..]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-1443415#1517503.html]]></link>
 <author><![CDATA[hzcck1125]]></author>
 <category><![CDATA[三菱工控论坛]]></category>
 <pubdate><![CDATA[Mon, 02 Dec 2013 07:30:36 +0000]]></pubdate>
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 <title><![CDATA[]]></title>
 <description><![CDATA[压力变送器為線性輸出 :
-1~3bar =&nbsp;&nbsp;4~20mA&nbsp;&nbsp;=&nbsp;&nbsp;0~4000
=&gt;4 bar = 16mA = 4000
=&gt;1 bar = 4mA&nbsp;&nbsp; = 1000
=&gt;1mA&nbsp;&nbsp;= 1/4bar=0.25bar
=&gt;1(plc值)= 1/1000 bar

當1bar時
電流輸出&nbsp;&nbsp;{[1-(-1)]bar*4mA}+4mA
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbs ..]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-1443415#1517400.html]]></link>
 <author><![CDATA[john42tw]]></author>
 <category><![CDATA[三菱工控论坛]]></category>
 <pubdate><![CDATA[Mon, 02 Dec 2013 02:11:13 +0000]]></pubdate>
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 <title><![CDATA[]]></title>
 <description><![CDATA[用加减乘除算出来咯]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-1443415#1517377.html]]></link>
 <author><![CDATA[200518]]></author>
 <category><![CDATA[三菱工控论坛]]></category>
 <pubdate><![CDATA[Mon, 02 Dec 2013 00:47:05 +0000]]></pubdate>
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