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 <title><![CDATA[求最大值]]></title>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-7936.html]]></link>
 <description><![CDATA[Latest 50 replies of 求最大值]]></description>
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 <title><![CDATA[工控人家园]]></title>
 <link><![CDATA[http://www.ymmfa.com]]></link>
 <description><![CDATA[工控人家园]]></description>
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 <title><![CDATA[]]></title>
 <description><![CDATA[原理就是当D100&lt;D101时把50个寄存器的值做字左位移,这样循环49次后D100中的值就是最大值了,再赋值给D200. 因为PLC不能象高级计算机语言那样用数组来做,没办法用Di ,所以我想用字左位移应该是可以的]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-7936#152834.html]]></link>
 <author><![CDATA[xiugu]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Thu, 06 Dec 2007 14:09:28 +0000]]></pubdate>
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 <title><![CDATA[]]></title>
 <description><![CDATA[D100&lt;D101 时]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-7936#152443.html]]></link>
 <author><![CDATA[xiugu]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Thu, 06 Dec 2007 02:10:38 +0000]]></pubdate>
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 <title><![CDATA[]]></title>
 <description><![CDATA[请问LD &lt; d100&nbsp; 是什么意思呀,能不能告诉我用梯形图怎么表示呀]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-7936#152425.html]]></link>
 <author><![CDATA[yww85997]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Thu, 06 Dec 2007 01:20:49 +0000]]></pubdate>
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 <title><![CDATA[]]></title>
 <description><![CDATA[FOR K49
LD &lt; d100&nbsp; d101Z0&nbsp; 
MOV D101Z&nbsp; D100
INC Z0
NEXT
LD M8000 MOV D100 D200

Z0是变址，每循环加1，D101Z对应D101、D102、D103、D104…………
将D(101+Z0)中的数与D100对比，大的话就写入D100中。最后将D100中的数写到D200里。]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-7936#152415.html]]></link>
 <author><![CDATA[konev]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Thu, 06 Dec 2007 01:02:59 +0000]]></pubdate>
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 <title><![CDATA[]]></title>
 <description><![CDATA[学习学习]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-7936#152412.html]]></link>
 <author><![CDATA[ltmwxq]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Thu, 06 Dec 2007 00:54:07 +0000]]></pubdate>
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 <title><![CDATA[]]></title>
 <description><![CDATA[能说的具体点吗?谢谢,我是个初学者.]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-7936#152400.html]]></link>
 <author><![CDATA[yww85997]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Thu, 06 Dec 2007 00:34:34 +0000]]></pubdate>
</item>
<item>
 <title><![CDATA[]]></title>
 <description><![CDATA[能说的具体点吗?谢谢,我是个初学者.]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-7936#152394.html]]></link>
 <author><![CDATA[yww85997]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Thu, 06 Dec 2007 00:23:00 +0000]]></pubdate>
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 <title><![CDATA[]]></title>
 <description><![CDATA[for&nbsp; k49
ld&lt; d100&nbsp; d101&nbsp;  wsfr d0&nbsp; d100&nbsp; k50&nbsp; k1
next
ld m8000&nbsp;  mov&nbsp; d100&nbsp; d200]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-7936#152338.html]]></link>
 <author><![CDATA[xiugu]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Wed, 05 Dec 2007 14:10:17 +0000]]></pubdate>
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