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 <title><![CDATA[关于西门子MOV的用法]]></title>
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 <description><![CDATA[Latest 50 replies of 关于西门子MOV的用法]]></description>
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 <title><![CDATA[工控人家园]]></title>
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<item>
 <title><![CDATA[]]></title>
 <description><![CDATA[学习了，谢谢 [s:21]&nbsp;&nbsp;[s:21]]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-15095#310150.html]]></link>
 <author><![CDATA[胡蓦然]]></author>
 <category><![CDATA[西门子工控论坛]]></category>
 <pubdate><![CDATA[Mon, 15 Sep 2008 11:32:01 +0000]]></pubdate>
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 <title><![CDATA[]]></title>
 <description><![CDATA[[quote]引用第7楼yao880118于2008-07-09 11:53发表的&amp;nbsp;&amp;nbsp;:
带符号有什么不一样吗？[/quote]


数据类型不一样

占用储存空间不一样


就像LZ图片中要用VB和VW来放不带符号的和带符号的数]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-15095#259907.html]]></link>
 <author><![CDATA[sjm213]]></author>
 <category><![CDATA[西门子工控论坛]]></category>
 <pubdate><![CDATA[Wed, 09 Jul 2008 04:15:08 +0000]]></pubdate>
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<item>
 <title><![CDATA[]]></title>
 <description><![CDATA[带符号有什么不一样吗？]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-15095#259885.html]]></link>
 <author><![CDATA[yao880118]]></author>
 <category><![CDATA[西门子工控论坛]]></category>
 <pubdate><![CDATA[Wed, 09 Jul 2008 03:53:45 +0000]]></pubdate>
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<item>
 <title><![CDATA[]]></title>
 <description><![CDATA[学到了，谢谢！ [s:28]&nbsp; [s:28]&nbsp; [s:28]]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-15095#249939.html]]></link>
 <author><![CDATA[liangtison]]></author>
 <category><![CDATA[西门子工控论坛]]></category>
 <pubdate><![CDATA[Tue, 24 Jun 2008 12:47:05 +0000]]></pubdate>
</item>
<item>
 <title><![CDATA[]]></title>
 <description><![CDATA[知道了！]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-15095#249852.html]]></link>
 <author><![CDATA[lqiuhua]]></author>
 <category><![CDATA[西门子工控论坛]]></category>
 <pubdate><![CDATA[Tue, 24 Jun 2008 11:15:34 +0000]]></pubdate>
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<item>
 <title><![CDATA[]]></title>
 <description><![CDATA[谢谢回复，我以为象欧姆龙常数前不加任何符号表示通道了]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-15095#242036.html]]></link>
 <author><![CDATA[yanglingson]]></author>
 <category><![CDATA[西门子工控论坛]]></category>
 <pubdate><![CDATA[Sat, 14 Jun 2008 00:13:25 +0000]]></pubdate>
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<item>
 <title><![CDATA[]]></title>
 <description><![CDATA[不是什么通道，无论是0还是+0都是表示的数值。

0是不带符号的数，+0是带符号的数。]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-15095#241752.html]]></link>
 <author><![CDATA[sjm213]]></author>
 <category><![CDATA[西门子工控论坛]]></category>
 <pubdate><![CDATA[Fri, 13 Jun 2008 09:14:25 +0000]]></pubdate>
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<item>
 <title><![CDATA[]]></title>
 <description><![CDATA[不加“+”是表示0通道吗]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-15095#241724.html]]></link>
 <author><![CDATA[yanglingson]]></author>
 <category><![CDATA[西门子工控论坛]]></category>
 <pubdate><![CDATA[Fri, 13 Jun 2008 08:52:14 +0000]]></pubdate>
</item>
<item>
 <title><![CDATA[]]></title>
 <description><![CDATA[请问上面输入“0”加“+”和不加意思不一样吧？]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-15095#241719.html]]></link>
 <author><![CDATA[yanglingson]]></author>
 <category><![CDATA[西门子工控论坛]]></category>
 <pubdate><![CDATA[Fri, 13 Jun 2008 08:48:48 +0000]]></pubdate>
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