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 <title><![CDATA[S7-200，关于VW0输入数据问题？]]></title>
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 <description><![CDATA[[quote]引用第3楼liujianbo818于2009-03-18 20:57发表的&nbsp;&nbsp;:
不明白占用的数据怎么是，高8位是120，除了符号位~！0111 1000 0000 0000
[/quote]

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;你传送的120是10进制在2进制表达的是0111 1000 0000 0000。如10进制1428用2进制表达是00101001101.
&nbsp;&nbsp; ..]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-32871#918510.html]]></link>
 <author><![CDATA[wlw]]></author>
 <category><![CDATA[西门子工控论坛]]></category>
 <pubdate><![CDATA[Wed, 01 Dec 2010 13:28:38 +0000]]></pubdate>
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 <description><![CDATA[[s:21]&nbsp;&nbsp;[s:21]&nbsp;&nbsp;[s:21]]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-32871#918066.html]]></link>
 <author><![CDATA[haxcwst]]></author>
 <category><![CDATA[西门子工控论坛]]></category>
 <pubdate><![CDATA[Wed, 01 Dec 2010 04:44:55 +0000]]></pubdate>
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 <description><![CDATA[LD&nbsp;&nbsp; SM0.0
MOVD&nbsp;&nbsp;120 Vb0
是只用一个vb0
LD&nbsp;&nbsp; SM0.0
MOVD&nbsp;&nbsp;120 VW0
要用两个就是vw1也用了
LD&nbsp;&nbsp; SM0.0
MOVD&nbsp;&nbsp;120 VD0
要用4个]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-32871#462151.html]]></link>
 <author><![CDATA[wushang140]]></author>
 <category><![CDATA[西门子工控论坛]]></category>
 <pubdate><![CDATA[Thu, 19 Mar 2009 02:33:53 +0000]]></pubdate>
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<item>
 <title><![CDATA[]]></title>
 <description><![CDATA[不明白占用的数据怎么是，高8位是120，除了符号位~！0111 1000 0000 0000]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-32871#461724.html]]></link>
 <author><![CDATA[liujianbo818]]></author>
 <category><![CDATA[西门子工控论坛]]></category>
 <pubdate><![CDATA[Wed, 18 Mar 2009 12:57:13 +0000]]></pubdate>
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 <title><![CDATA[]]></title>
 <description><![CDATA[哦，谢谢~ [s:21]]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-32871#461720.html]]></link>
 <author><![CDATA[liujianbo818]]></author>
 <category><![CDATA[西门子工控论坛]]></category>
 <pubdate><![CDATA[Wed, 18 Mar 2009 12:55:49 +0000]]></pubdate>
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 <title><![CDATA[]]></title>
 <description><![CDATA[当然占用了
vw0包括了vw0和vw1
你必须从vw2开始用
这是最基本的常识
你还要加大火候]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-32871#461705.html]]></link>
 <author><![CDATA[flin124]]></author>
 <category><![CDATA[西门子工控论坛]]></category>
 <pubdate><![CDATA[Wed, 18 Mar 2009 12:50:18 +0000]]></pubdate>
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