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 <title><![CDATA[西门子S7-200有没有和三菱FX的pls指令一样 ..]]></title>
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 <description><![CDATA[Latest 50 replies of 西门子S7-200有没有和三菱FX的pls指令一样 ..]]></description>
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 <description><![CDATA[肯定是有啊&nbsp;&nbsp; SM0.6&nbsp;&nbsp;导通一个扫描周期，下一个扫描周期为0FF，就是交替导通与停止。SM0.4 导通30s，关断30s。SM0.5接通0.5s，关断0.5s。根据你的具体情况选择]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-1562802#1859226.html]]></link>
 <author><![CDATA[weisongyuan]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Sun, 29 Jan 2017 11:47:12 +0000]]></pubdate>
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 <description><![CDATA[这倒是没有，不过有上升沿检测P和下降沿检测N]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-1562802#1858633.html]]></link>
 <author><![CDATA[550374389]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Sun, 22 Jan 2017 14:25:05 +0000]]></pubdate>
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 <title><![CDATA[]]></title>
 <description><![CDATA[s7-200的话你往SMD72写多少脉冲,PLC就发多少脉冲啊，发完就停，或者中途你家0→SMD72的指令强行把脉冲置零]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-1562802#1858542.html]]></link>
 <author><![CDATA[chengchao]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Sun, 22 Jan 2017 02:08:08 +0000]]></pubdate>
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