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 <description><![CDATA[好，学习了]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-1422273#1433553.html]]></link>
 <author><![CDATA[yuchai001]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Fri, 19 Apr 2013 14:51:06 +0000]]></pubdate>
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 <description><![CDATA[谢谢楼主。]]></description>
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 <author><![CDATA[lljwtt]]></author>
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 <pubdate><![CDATA[Fri, 19 Apr 2013 10:48:02 +0000]]></pubdate>
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 <title><![CDATA[]]></title>
 <description><![CDATA[好心人，向你致敬。]]></description>
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 <author><![CDATA[sxd6858106]]></author>
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 <pubdate><![CDATA[Tue, 19 Mar 2013 01:27:11 +0000]]></pubdate>
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 <author><![CDATA[kgao08885]]></author>
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 <pubdate><![CDATA[Tue, 19 Mar 2013 01:03:07 +0000]]></pubdate>
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 <description><![CDATA[四、计数器和高速计数器[C]
计数器可以分为16位计数器和32位计数器。两种计数器都有一般用和停电保持用两种类型。计数器编号不用于计数器功能时可以当做数据寄存器用来保存数据。
16位计数器只能增计数，设定值范围为1~32767；32位计数器可以切换为增计数或减计数，设定值范围为-214783648~214783647。
计数器对PLC的内部 ..]]></description>
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 <author><![CDATA[sjm213]]></author>
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 <pubdate><![CDATA[Tue, 19 Mar 2013 01:02:05 +0000]]></pubdate>
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