<?xml version="1.0" encoding="gbk"?>
<rss version="2.0">
<channel>
 <title><![CDATA[西门子200与变频器485通讯]]></title>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-1517638.html]]></link>
 <description><![CDATA[Latest 50 replies of 西门子200与变频器485通讯]]></description>
 <copyright><![CDATA[Copyright(C) 工控人家园]]></copyright>
 <generator><![CDATA[www.ymmfa.com]]></generator>
 <lastBuildDate><![CDATA[Wed, 13 May 2026 23:09:41 +0000]]></lastBuildDate>
  <image>
 <url><![CDATA[images/rss.gif]]></url>
 <title><![CDATA[工控人家园]]></title>
 <link><![CDATA[http://www.ymmfa.com]]></link>
 <description><![CDATA[工控人家园]]></description>
  </image>
<item>
 <title><![CDATA[]]></title>
 <description><![CDATA[就是干扰也不会冒烟啊，肯定是串入电压啊，接错线了，PLC的3和8接变频器的485+和485-，检查一下接线吧。]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-1517638#1686134.html]]></link>
 <author><![CDATA[zhouqi]]></author>
 <category><![CDATA[西门子工控论坛]]></category>
 <pubdate><![CDATA[Mon, 27 Jul 2015 14:49:03 +0000]]></pubdate>
</item>
<item>
 <title><![CDATA[]]></title>
 <description><![CDATA[S7-200PLC的通讯口就是RS485的，不需要什么232转485了。
直接用一个DB9的插头，3、8、5脚焊出引线，将插头插到PLC的通讯口上，然后引线的另外一端接变频器的485端子。
下面是S7-200PLC与MM440变频器及A700变频器的通讯接线示意图：
 [attachment=137642] 
 [attachment=137643]]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-1517638#1685177.html]]></link>
 <author><![CDATA[天使之心]]></author>
 <category><![CDATA[西门子工控论坛]]></category>
 <pubdate><![CDATA[Thu, 23 Jul 2015 05:40:53 +0000]]></pubdate>
</item>
<item>
 <title><![CDATA[]]></title>
 <description><![CDATA[阿门，为什么会这样子呢？接错也不能够冒烟啊！]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-1517638#1684473.html]]></link>
 <author><![CDATA[szhong1]]></author>
 <category><![CDATA[西门子工控论坛]]></category>
 <pubdate><![CDATA[Tue, 21 Jul 2015 00:42:34 +0000]]></pubdate>
</item>
<item>
 <title><![CDATA[]]></title>
 <description><![CDATA[学习 [s:21]]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-1517638#1683990.html]]></link>
 <author><![CDATA[414471898]]></author>
 <category><![CDATA[西门子工控论坛]]></category>
 <pubdate><![CDATA[Sat, 18 Jul 2015 07:36:27 +0000]]></pubdate>
</item>
<item>
 <title><![CDATA[]]></title>
 <description><![CDATA[看看是不是针脚焊接到电源上了。]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-1517638#1683659.html]]></link>
 <author><![CDATA[sxjtwsy]]></author>
 <category><![CDATA[西门子工控论坛]]></category>
 <pubdate><![CDATA[Thu, 16 Jul 2015 16:31:55 +0000]]></pubdate>
</item>
<item>
 <title><![CDATA[]]></title>
 <description><![CDATA[有可能是干扰了，检查一下。]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-1517638#1682878.html]]></link>
 <author><![CDATA[大于号]]></author>
 <category><![CDATA[西门子工控论坛]]></category>
 <pubdate><![CDATA[Mon, 13 Jul 2015 15:51:13 +0000]]></pubdate>
</item>
<item>
 <title><![CDATA[]]></title>
 <description><![CDATA[是不是 干扰太大了 ，做好干扰接地。]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-1517638#1682862.html]]></link>
 <author><![CDATA[海浪飞]]></author>
 <category><![CDATA[西门子工控论坛]]></category>
 <pubdate><![CDATA[Mon, 13 Jul 2015 14:03:57 +0000]]></pubdate>
</item>
<item>
 <title><![CDATA[]]></title>
 <description><![CDATA[PLC一端插485九针插头，测量一下3,8号电压是否是4到5伏。再测量变频器485线头两根线电压也是4到5伏。正接正。]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-1517638#1681811.html]]></link>
 <author><![CDATA[zhangshan999]]></author>
 <category><![CDATA[西门子工控论坛]]></category>
 <pubdate><![CDATA[Fri, 10 Jul 2015 00:27:44 +0000]]></pubdate>
</item>
<item>
 <title><![CDATA[]]></title>
 <description><![CDATA[一边是232九针头插入plc，另一边是3，8脚接变频器

232串口3，8针要与变频器3,8一致]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-1517638#1680988.html]]></link>
 <author><![CDATA[工控天地]]></author>
 <category><![CDATA[西门子工控论坛]]></category>
 <pubdate><![CDATA[Mon, 06 Jul 2015 10:05:40 +0000]]></pubdate>
</item>
<item>
 <title><![CDATA[]]></title>
 <description><![CDATA[一边是232九针头插入plc，另一边是3，8脚接变频器]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-1517638#1680904.html]]></link>
 <author><![CDATA[smile一下]]></author>
 <category><![CDATA[西门子工控论坛]]></category>
 <pubdate><![CDATA[Mon, 06 Jul 2015 03:01:21 +0000]]></pubdate>
</item>
<item>
 <title><![CDATA[]]></title>
 <description><![CDATA[是不是传入高压了呢，要是没有高压的话，就算接错线也没什么问题的呢]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-1517638#1680897.html]]></link>
 <author><![CDATA[daocaoren]]></author>
 <category><![CDATA[西门子工控论坛]]></category>
 <pubdate><![CDATA[Mon, 06 Jul 2015 02:37:55 +0000]]></pubdate>
</item>
</channel></rss>