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 <title><![CDATA[S7通讯]]></title>
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 <description><![CDATA[Latest 50 replies of S7通讯]]></description>
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 <description><![CDATA[[quote]引用第8楼autoctrl于2023-05-10 16:54发表的&nbsp;&nbsp;:
电源断了还能通讯？这个理解不了
PLC之间通讯可以看看这几个案例： [attachment=280644]
[/quote]你这个要加硬件，要加钱的]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-1752320#2356079.html]]></link>
 <author><![CDATA[2510994718]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Wed, 10 May 2023 09:36:38 +0000]]></pubdate>
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 <title><![CDATA[]]></title>
 <description><![CDATA[电源断了还能通讯？这个理解不了
PLC之间通讯可以看看这几个案例： [attachment=280644]]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-1752320#2356064.html]]></link>
 <author><![CDATA[autoctrl]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Wed, 10 May 2023 08:54:19 +0000]]></pubdate>
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 <description><![CDATA[最简单的方法加心跳检测 [s:21]]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-1752320#2355594.html]]></link>
 <author><![CDATA[张海杰]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Tue, 09 May 2023 00:44:34 +0000]]></pubdate>
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 <title><![CDATA[]]></title>
 <description><![CDATA[加个心跳检测，0.5秒的脉冲。长通接通一个定时器，断开接通一个定时器。只要这俩定时器接通就触发一个标志位，代表检测不到0.5秒的脉冲，就算通讯故障。]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-1752320#2348039.html]]></link>
 <author><![CDATA[li8110]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Thu, 06 Apr 2023 02:32:07 +0000]]></pubdate>
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 <title><![CDATA[]]></title>
 <description><![CDATA[同楼上的，加个心跳检测]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-1752320#2347941.html]]></link>
 <author><![CDATA[宿迁电工]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Wed, 05 Apr 2023 12:07:50 +0000]]></pubdate>
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 <title><![CDATA[]]></title>
 <description><![CDATA[一般双方都要加上心跳检测来判断通讯是否正常]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-1752320#2347927.html]]></link>
 <author><![CDATA[yiyang1]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Wed, 05 Apr 2023 09:39:28 +0000]]></pubdate>
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 <title><![CDATA[]]></title>
 <description><![CDATA[我也想学习。]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-1752320#2347854.html]]></link>
 <author><![CDATA[雪山飞狐]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Wed, 05 Apr 2023 02:21:27 +0000]]></pubdate>
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<item>
 <title><![CDATA[]]></title>
 <description><![CDATA[通过通讯读取数据，一端断开，可以用延时做个预警信息，不一定非要报故障，就像1楼大神说的，数据读取异常将数据清零或者默认初始化状态]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-1752320#2347833.html]]></link>
 <author><![CDATA[哈喽123]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Wed, 05 Apr 2023 00:18:05 +0000]]></pubdate>
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<item>
 <title><![CDATA[]]></title>
 <description><![CDATA[一端断电怎么还能传输数据？可以做个通讯检测，异常后将通讯数据清零。]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-1752320#2347828.html]]></link>
 <author><![CDATA[qll72368]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Tue, 04 Apr 2023 23:27:08 +0000]]></pubdate>
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