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 <title><![CDATA[WINCC8.0与S7-300在线数采一段时间后在线 ..]]></title>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-1795088.html]]></link>
 <description><![CDATA[Latest 50 replies of WINCC8.0与S7-300在线数采一段时间后在线 ..]]></description>
 <copyright><![CDATA[Copyright(C) 工控人家园]]></copyright>
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 <lastBuildDate><![CDATA[Fri, 05 Jun 2026 03:05:19 +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[考虑是否BCNET-S7-300固件要不要升下级,或者换一个试试.]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-1795088#2560698.html]]></link>
 <author><![CDATA[bh2181]]></author>
 <category><![CDATA[西门子工控论坛]]></category>
 <pubdate><![CDATA[Fri, 22 May 2026 02:13:33 +0000]]></pubdate>
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 <title><![CDATA[]]></title>
 <description><![CDATA[[quote]引用第5楼xiangzhuan于2026-05-16 10:38发表的&nbsp;&nbsp;:
结案：PLC端和HMI端的终端电阻没有在ON状态。
[/quote]
终端电阻有这么重要吗]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-1795088#2560297.html]]></link>
 <author><![CDATA[eledesigner]]></author>
 <category><![CDATA[西门子工控论坛]]></category>
 <pubdate><![CDATA[Tue, 19 May 2026 00:49:35 +0000]]></pubdate>
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<item>
 <title><![CDATA[]]></title>
 <description><![CDATA[搞工控就是这样，任何细节都不能放过。]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-1795088#2560206.html]]></link>
 <author><![CDATA[szhong1]]></author>
 <category><![CDATA[西门子工控论坛]]></category>
 <pubdate><![CDATA[Mon, 18 May 2026 02:30:20 +0000]]></pubdate>
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<item>
 <title><![CDATA[]]></title>
 <description><![CDATA[结案：PLC端和HMI端的终端电阻没有在ON状态。]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-1795088#2559991.html]]></link>
 <author><![CDATA[xiangzhuan]]></author>
 <category><![CDATA[西门子工控论坛]]></category>
 <pubdate><![CDATA[Sat, 16 May 2026 02:38:07 +0000]]></pubdate>
</item>
<item>
 <title><![CDATA[]]></title>
 <description><![CDATA[网线已经更换过了。确定并排除了网线的问题。]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-1795088#2556778.html]]></link>
 <author><![CDATA[xiangzhuan]]></author>
 <category><![CDATA[西门子工控论坛]]></category>
 <pubdate><![CDATA[Mon, 20 Apr 2026 07:44:18 +0000]]></pubdate>
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<item>
 <title><![CDATA[]]></title>
 <description><![CDATA[换一根带屏蔽的成品网线吧，自己做的网线有时候接触不好。]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-1795088#2556652.html]]></link>
 <author><![CDATA[unicorn022]]></author>
 <category><![CDATA[西门子工控论坛]]></category>
 <pubdate><![CDATA[Sun, 19 Apr 2026 00:49:02 +0000]]></pubdate>
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<item>
 <title><![CDATA[]]></title>
 <description><![CDATA[大佬们求分析一下子。实在没头绪了。]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-1795088#2556635.html]]></link>
 <author><![CDATA[xiangzhuan]]></author>
 <category><![CDATA[西门子工控论坛]]></category>
 <pubdate><![CDATA[Sat, 18 Apr 2026 23:42:07 +0000]]></pubdate>
</item>
<item>
 <title><![CDATA[]]></title>
 <description><![CDATA[当WINCC在线变量不再自动刷新后，将电脑的网线或者BCNET-S7-300-S的网线拔掉后重新插上后。WINCC界面的在线变量又会自动刷新了。
运行一段时间后又会卡住不再自动刷新数据。]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-1795088#2556628.html]]></link>
 <author><![CDATA[xiangzhuan]]></author>
 <category><![CDATA[西门子工控论坛]]></category>
 <pubdate><![CDATA[Sat, 18 Apr 2026 14:11:45 +0000]]></pubdate>
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