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 <title><![CDATA[S7-300PLC求指导下]]></title>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-1679832.html]]></link>
 <description><![CDATA[Latest 50 replies of S7-300PLC求指导下]]></description>
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 <lastBuildDate><![CDATA[Mon, 11 May 2026 15:20:40 +0000]]></lastBuildDate>
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 <title><![CDATA[工控人家园]]></title>
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 <description><![CDATA[工控人家园]]></description>
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 <description><![CDATA[[s:21] 不能变哦]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-1679832#2117558.html]]></link>
 <author><![CDATA[请叫我老六]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Fri, 08 May 2020 03:35:11 +0000]]></pubdate>
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 <description><![CDATA[这种模块就这样，要看它是灌电流还是拉电流输入输出的，选择模块前注意一下。]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-1679832#2117347.html]]></link>
 <author><![CDATA[lywww9218]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Thu, 07 May 2020 07:16:06 +0000]]></pubdate>
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 <title><![CDATA[]]></title>
 <description><![CDATA[简单,PNP可用NPN替换，采用外挂继电器转化一下电平即可]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-1679832#2109699.html]]></link>
 <author><![CDATA[往事如风]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Mon, 30 Mar 2020 10:26:41 +0000]]></pubdate>
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 <description><![CDATA[西门子的就是这样，没有第二种接法，可以用固态继电器倒一下。就像三菱Q模块，买了就定了极性]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-1679832#2109566.html]]></link>
 <author><![CDATA[niningtt]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Sun, 29 Mar 2020 13:12:54 +0000]]></pubdate>
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