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 <title><![CDATA[用接近开关测速不准，求助]]></title>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-1451977.html]]></link>
 <description><![CDATA[Latest 50 replies of 用接近开关测速不准，求助]]></description>
 <copyright><![CDATA[Copyright(C) 工控人家园]]></copyright>
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 <lastBuildDate><![CDATA[Wed, 29 Apr 2026 20:15:12 +0000]]></lastBuildDate>
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 <title><![CDATA[工控人家园]]></title>
 <link><![CDATA[http://www.ymmfa.com]]></link>
 <description><![CDATA[工控人家园]]></description>
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 <title><![CDATA[]]></title>
 <description><![CDATA[感应时间不低于1ms]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-1451977#1561983.html]]></link>
 <author><![CDATA[sxd6858106]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Wed, 23 Apr 2014 00:38:51 +0000]]></pubdate>
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 <title><![CDATA[]]></title>
 <description><![CDATA[计数器只有在输入条件的通/断时间比同一OUT C 指令的执行间隔更大的情况下
才能计数
计数器的最大计数速度可用下式算出
最大计数速度 Cmax=n/100*1/ T [ 次 / S ]
n: 效率% *
T: OUT C 指令的执行间隔]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-1451977#1561934.html]]></link>
 <author><![CDATA[good0592]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Tue, 22 Apr 2014 15:11:21 +0000]]></pubdate>
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 <title><![CDATA[]]></title>
 <description><![CDATA[光电的最好&nbsp;&nbsp;， 因为接近传感器一个是感应速度&nbsp;&nbsp;一个感应距离 在感应到和离开的区域决定两个齿的最小距离]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-1451977#1560830.html]]></link>
 <author><![CDATA[kzprince]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Sat, 19 Apr 2014 05:59:38 +0000]]></pubdate>
</item>
<item>
 <title><![CDATA[]]></title>
 <description><![CDATA[编码器比较好]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-1451977#1556179.html]]></link>
 <author><![CDATA[dzhhwx]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Sun, 06 Apr 2014 08:26:27 +0000]]></pubdate>
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 <title><![CDATA[]]></title>
 <description><![CDATA[如果频率很低的话可以用接近开关，不过楼主选用开关时要考虑很多东西，比如感应距离，频率，感应范围，开关感应面积大小等]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-1451977#1556093.html]]></link>
 <author><![CDATA[账号闲置了]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Sun, 06 Apr 2014 01:59:54 +0000]]></pubdate>
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 <title><![CDATA[]]></title>
 <description><![CDATA[用编码器或光栅，怎么会用接近开关测速呢]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-1451977#1556086.html]]></link>
 <author><![CDATA[qiang1121]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Sun, 06 Apr 2014 01:40:04 +0000]]></pubdate>
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 <title><![CDATA[]]></title>
 <description><![CDATA[光电开关好过接近开关 可靠很 不过plc响应频率有关系]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-1451977#1556054.html]]></link>
 <author><![CDATA[四海明]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Sat, 05 Apr 2014 15:31:52 +0000]]></pubdate>
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 <title><![CDATA[]]></title>
 <description><![CDATA[普通的接近开关相应频率都是十几MHZ&nbsp;&nbsp;你这里计数，PLC 信号要接高速输入点，程序里面还要处理一下，]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-1451977#1555518.html]]></link>
 <author><![CDATA[zhtzht20]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Thu, 03 Apr 2014 14:33:48 +0000]]></pubdate>
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 <title><![CDATA[]]></title>
 <description><![CDATA[要测多少的速度。选高速反应的。]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-1451977#1555507.html]]></link>
 <author><![CDATA[lixiangyang]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Thu, 03 Apr 2014 14:03:37 +0000]]></pubdate>
</item>
<item>
 <title><![CDATA[]]></title>
 <description><![CDATA[用霍尔开关比较准]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-1451977#1555382.html]]></link>
 <author><![CDATA[tianli]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Thu, 03 Apr 2014 09:08:30 +0000]]></pubdate>
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<item>
 <title><![CDATA[]]></title>
 <description><![CDATA[你的接近开关反应速度不够，要用高速的才可以。]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-1451977#1555267.html]]></link>
 <author><![CDATA[guochunyi]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Thu, 03 Apr 2014 05:21:51 +0000]]></pubdate>
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 <title><![CDATA[]]></title>
 <description><![CDATA[高速计数？计数器最高响应频率是多少？开关响应频率是多少？速度有多快？这些都是事。]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-1451977#1555228.html]]></link>
 <author><![CDATA[janke120]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Thu, 03 Apr 2014 04:05:34 +0000]]></pubdate>
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 <title><![CDATA[]]></title>
 <description><![CDATA[同意2楼说法]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-1451977#1555225.html]]></link>
 <author><![CDATA[坚士人]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Thu, 03 Apr 2014 03:53:13 +0000]]></pubdate>
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 <title><![CDATA[]]></title>
 <description><![CDATA[注意接近开关的选型，要了解接近开关各参数对被测对象的要求。如响应时间，距离，面积等。]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-1451977#1555224.html]]></link>
 <author><![CDATA[apprentice0]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Thu, 03 Apr 2014 03:52:33 +0000]]></pubdate>
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 <title><![CDATA[]]></title>
 <description><![CDATA[接近开关的选型和转速表的响应速度等参数要注意]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-1451977#1555210.html]]></link>
 <author><![CDATA[bodau]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Thu, 03 Apr 2014 02:44:55 +0000]]></pubdate>
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 <title><![CDATA[]]></title>
 <description><![CDATA[你这种方法可尝试但不可行吧]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-1451977#1555209.html]]></link>
 <author><![CDATA[seallyzoom]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Thu, 03 Apr 2014 02:34:35 +0000]]></pubdate>
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