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 <title><![CDATA[FX2N通讯线制作求助]]></title>
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 <description><![CDATA[Latest 50 replies of FX2N通讯线制作求助]]></description>
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 <description><![CDATA[[quote]引用楼主iamjww48于2009-05-13 17:00发表的 FX2N通讯线制作求助 :
[img]http://4p.qupan.com/p4/jpg/2009-5-13/17/www.qupan.com_1300_%e7%ba%bf%e8%b7%af.jpg?u4nvbjmy2bb2ag55210tflag=1242205263opin=52864597276b3347a636b7e6f76ae1eb.jpg[/img]
请问这里的U2是什么芯片？？？有用的的朋友吗？？？急用，谢谢了 ..]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-37066#517994.html]]></link>
 <author><![CDATA[pihailin]]></author>
 <category><![CDATA[资料互助]]></category>
 <pubdate><![CDATA[Wed, 13 May 2009 12:43:12 +0000]]></pubdate>
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 <description><![CDATA[max202是专为RS-232通信接口设计的收发器,用MA232代替时外接电容值不同,具体可上网查下.FX2N同电脑9针串口数据线其实是RS422(PLC)转RS232(电脑)数据线,我听同行讲过自制的数据线比原装的SC-09传输速度慢很多,区别就是MAX232外接电容不同.现SC-09才卖30元,买条拆开看看.]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-37066#517920.html]]></link>
 <author><![CDATA[1075861413]]></author>
 <category><![CDATA[资料互助]]></category>
 <pubdate><![CDATA[Wed, 13 May 2009 11:59:23 +0000]]></pubdate>
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 <description><![CDATA[呃。。。我发现社团实验室里有买好了的MAX232和板。。。。就是不知道U2是什么片，郁闷啊。。。]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-37066#517764.html]]></link>
 <author><![CDATA[iamjww48]]></author>
 <category><![CDATA[资料互助]]></category>
 <pubdate><![CDATA[Wed, 13 May 2009 09:06:04 +0000]]></pubdate>
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 <description><![CDATA[真的有人去这样做喔～～～

满论坛都是串两个电阻就搞定的通讯线～～～

呵呵～]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-37066#517762.html]]></link>
 <author><![CDATA[cvlsam]]></author>
 <category><![CDATA[资料互助]]></category>
 <pubdate><![CDATA[Wed, 13 May 2009 09:04:08 +0000]]></pubdate>
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 <description><![CDATA[另外MAX202可以用MAX232代替吗？用无特别的注意事项，小弟先在这里谢谢各位了]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-37066#517758.html]]></link>
 <author><![CDATA[iamjww48]]></author>
 <category><![CDATA[资料互助]]></category>
 <pubdate><![CDATA[Wed, 13 May 2009 09:02:05 +0000]]></pubdate>
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