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 <title><![CDATA[烧坏S7-200的USB-PPI电缆问题，大家注意了]]></title>
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 <description><![CDATA[[quote]引用楼主jx_einstein于2011-01-21 11:35发表的 烧坏S7-200的USB-PPI电缆问题，大家注意了 :
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;最近做一个项目，连烧了2条USB-PPI电缆，很是郁闷，发上了给大家提个醒。
&nbsp;&nbsp;&nbsp;&nbsp;控制一个电机正反转的时候，延时过短，或没有延时。USB-PPI的电缆就会 ..]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-94842#1122198.html]]></link>
 <author><![CDATA[刘永]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Thu, 08 Sep 2011 08:46:12 +0000]]></pubdate>
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 <title><![CDATA[]]></title>
 <description><![CDATA[谢谢如此热心朋友]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-94842#1122194.html]]></link>
 <author><![CDATA[tk758]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Thu, 08 Sep 2011 08:30:03 +0000]]></pubdate>
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 <title><![CDATA[]]></title>
 <description><![CDATA[谢谢提醒，好心人]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-94842#1121376.html]]></link>
 <author><![CDATA[liuhanqi]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Tue, 06 Sep 2011 14:43:03 +0000]]></pubdate>
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 <description><![CDATA[USB电缆是通讯用的。电机正反转控制好PPI电缆好像没有太大的关联啊，不要误导人]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-94842#1121342.html]]></link>
 <author><![CDATA[qiangguoyu3]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Tue, 06 Sep 2011 13:55:15 +0000]]></pubdate>
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 <title><![CDATA[]]></title>
 <description><![CDATA[楼主：
我用200的PLC还是用的不少，没有遇到过了，请楼主把问题描述清楚点嘛。]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-94842#1120581.html]]></link>
 <author><![CDATA[hejian96]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Mon, 05 Sep 2011 06:10:31 +0000]]></pubdate>
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 <title><![CDATA[]]></title>
 <description><![CDATA[[quote]引用第3楼guochunyi于2011-01-21 16:01发表的&nbsp;&nbsp;:
还从来没抄坏过通讯电缆的飘过，而且还是一直热插拔。
西门子原装的USB-PPI一下子就烧坏了? [s:26]&nbsp;&nbsp;[s:26]
[/quote]
[s:17]热拔 那你小心了我可是有血的教训的。]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-94842#1120563.html]]></link>
 <author><![CDATA[z4131246]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Mon, 05 Sep 2011 05:29:48 +0000]]></pubdate>
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 <title><![CDATA[]]></title>
 <description><![CDATA[[quote]引用第13楼jdk1126于2011-01-22 11:30发表的&nbsp;&nbsp;:
USB-PPI电缆和电机正反转延时过短，或没有延时，USB-PPI的电缆就会烧坏有什么关系？？？
[/quote]
同意]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-94842#1120530.html]]></link>
 <author><![CDATA[cailiang123]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Mon, 05 Sep 2011 03:54:05 +0000]]></pubdate>
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 <title><![CDATA[]]></title>
 <description><![CDATA[没出现过这样的问题啊，你的是大功率电机吗？]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-94842#1120503.html]]></link>
 <author><![CDATA[旭日阳光]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Mon, 05 Sep 2011 03:03:31 +0000]]></pubdate>
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 <title><![CDATA[]]></title>
 <description><![CDATA[没碰到过，学习了]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-94842#1120499.html]]></link>
 <author><![CDATA[hs82463789]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Mon, 05 Sep 2011 02:51:46 +0000]]></pubdate>
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 <title><![CDATA[]]></title>
 <description><![CDATA[原装的应该坏不了]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-94842#1120249.html]]></link>
 <author><![CDATA[蒋海军]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Sun, 04 Sep 2011 10:00:35 +0000]]></pubdate>
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 <description><![CDATA[好的，谢谢，以后会注意的[url]www.hncgq.com[/url]]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-94842#1120190.html]]></link>
 <author><![CDATA[封锁一生]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Sun, 04 Sep 2011 07:34:40 +0000]]></pubdate>
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 <title><![CDATA[]]></title>
 <description><![CDATA[路过，学习啦。。。]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-94842#1120166.html]]></link>
 <author><![CDATA[wangjiaaaa]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Sun, 04 Sep 2011 05:27:44 +0000]]></pubdate>
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 <title><![CDATA[]]></title>
 <description><![CDATA[顶楼主！谢谢了，谨记！]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-94842#1120124.html]]></link>
 <author><![CDATA[alencie]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Sun, 04 Sep 2011 03:07:14 +0000]]></pubdate>
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 <title><![CDATA[]]></title>
 <description><![CDATA[电机正反转与PPI通讯烧坏是什么关系？]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-94842#1120109.html]]></link>
 <author><![CDATA[再见理想]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Sun, 04 Sep 2011 02:45:15 +0000]]></pubdate>
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 <title><![CDATA[]]></title>
 <description><![CDATA[应该不会吧，以后注意一下，学习了，好同志。]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-94842#961847.html]]></link>
 <author><![CDATA[wycfm25202]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Sat, 22 Jan 2011 12:44:21 +0000]]></pubdate>
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 <title><![CDATA[]]></title>
 <description><![CDATA[以后注意这个问题&nbsp;&nbsp;谢谢]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-94842#961811.html]]></link>
 <author><![CDATA[80666278]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Sat, 22 Jan 2011 12:04:05 +0000]]></pubdate>
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 <title><![CDATA[]]></title>
 <description><![CDATA[怎么会烧呢]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-94842#961808.html]]></link>
 <author><![CDATA[guofu]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Sat, 22 Jan 2011 12:01:25 +0000]]></pubdate>
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 <title><![CDATA[]]></title>
 <description><![CDATA[呵呵，还好只是S7-200]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-94842#961642.html]]></link>
 <author><![CDATA[beethoven21]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Sat, 22 Jan 2011 05:38:31 +0000]]></pubdate>
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 <title><![CDATA[]]></title>
 <description><![CDATA[谢谢啦 真是热心啊]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-94842#961599.html]]></link>
 <author><![CDATA[lkmaunui]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Sat, 22 Jan 2011 04:19:04 +0000]]></pubdate>
</item>
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 <title><![CDATA[]]></title>
 <description><![CDATA[USB-PPI电缆和电机正反转延时过短，或没有延时，USB-PPI的电缆就会烧坏有什么关系？？？]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-94842#961575.html]]></link>
 <author><![CDATA[jdk1126]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Sat, 22 Jan 2011 03:30:58 +0000]]></pubdate>
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 <title><![CDATA[]]></title>
 <description><![CDATA[不是原装的，就是市面上买来的那种。]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-94842#961475.html]]></link>
 <author><![CDATA[jx_einstein]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Sat, 22 Jan 2011 00:50:04 +0000]]></pubdate>
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 <title><![CDATA[]]></title>
 <description><![CDATA[学习了]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-94842#961465.html]]></link>
 <author><![CDATA[万钧彩]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Sat, 22 Jan 2011 00:03:23 +0000]]></pubdate>
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 <title><![CDATA[]]></title>
 <description><![CDATA[路过&nbsp;&nbsp;学习了‘]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-94842#961408.html]]></link>
 <author><![CDATA[lingsun]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Fri, 21 Jan 2011 14:54:57 +0000]]></pubdate>
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 <title><![CDATA[]]></title>
 <description><![CDATA[通讯电缆烧坏？有点不理解，但还是谢谢楼主的提醒]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-94842#961312.html]]></link>
 <author><![CDATA[ysheng9099]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Fri, 21 Jan 2011 12:40:05 +0000]]></pubdate>
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 <title><![CDATA[]]></title>
 <description><![CDATA[不懂！学习了]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-94842#961282.html]]></link>
 <author><![CDATA[向日葵]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Fri, 21 Jan 2011 11:52:49 +0000]]></pubdate>
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 <title><![CDATA[]]></title>
 <description><![CDATA[这样也会坏吗？]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-94842#961236.html]]></link>
 <author><![CDATA[chengjianbo]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Fri, 21 Jan 2011 10:07:23 +0000]]></pubdate>
</item>
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 <title><![CDATA[]]></title>
 <description><![CDATA[你的电缆是否不太好啊]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-94842#961223.html]]></link>
 <author><![CDATA[jxh668]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Fri, 21 Jan 2011 09:35:25 +0000]]></pubdate>
</item>
<item>
 <title><![CDATA[]]></title>
 <description><![CDATA[谢谢热心LOUZHU!]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-94842#961208.html]]></link>
 <author><![CDATA[superandy]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Fri, 21 Jan 2011 09:03:32 +0000]]></pubdate>
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 <title><![CDATA[]]></title>
 <description><![CDATA[[s:32]&nbsp;&nbsp;应该是接地的问题&nbsp;&nbsp;PLC和电机都良好接地应该就不会出现这种问题了]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-94842#961201.html]]></link>
 <author><![CDATA[taojie718]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Fri, 21 Jan 2011 08:47:54 +0000]]></pubdate>
</item>
<item>
 <title><![CDATA[]]></title>
 <description><![CDATA[还从来没抄坏过通讯电缆的飘过，而且还是一直热插拔。
西门子原装的USB-PPI一下子就烧坏了? [s:26]&nbsp;&nbsp;[s:26]]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-94842#961170.html]]></link>
 <author><![CDATA[guochunyi]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Fri, 21 Jan 2011 08:01:10 +0000]]></pubdate>
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