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 <title><![CDATA[求助S7-200的N指令是什么作用]]></title>
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 <description><![CDATA[Latest 50 replies of 求助S7-200的N指令是什么作用]]></description>
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 <description><![CDATA[下降沿]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-1745816#2319365.html]]></link>
 <author><![CDATA[简单mmmm]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Sun, 06 Nov 2022 07:20:34 +0000]]></pubdate>
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 <description><![CDATA[1楼正解，其实这种问题翻翻手册就能知道了]]></description>
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 <author><![CDATA[about911]]></author>
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 <pubdate><![CDATA[Fri, 04 Nov 2022 12:10:40 +0000]]></pubdate>
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 <description><![CDATA[[s:28] 
下降沿
负跳变指令，一旦发现有负跳变发生（由1到0），该值被置为1，否则置0。]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-1745816#2318974.html]]></link>
 <author><![CDATA[中棉油脂]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Fri, 04 Nov 2022 09:48:29 +0000]]></pubdate>
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