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 <title><![CDATA[s7-200通讯接线的问题？]]></title>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-124053.html]]></link>
 <description><![CDATA[Latest 50 replies of s7-200通讯接线的问题？]]></description>
 <copyright><![CDATA[Copyright(C) 工控人家园]]></copyright>
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 <lastBuildDate><![CDATA[Wed, 29 Apr 2026 04:31:52 +0000]]></lastBuildDate>
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 <description><![CDATA[问题已解决。解决方法：我有一个USB转串口安装上后，后来又找来了一个RS232转485模块。一个9针公头一个9针母头，，
串口接于模块232口。模块485口与9针公头连接 ，在公头的1针脚焊一根线接于母头3针脚，公头的2针脚焊一根线接于母头8针脚。通电后OK。]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-124053#1152952.html]]></link>
 <author><![CDATA[为修修为]]></author>
 <category><![CDATA[西门子工控论坛]]></category>
 <pubdate><![CDATA[Sun, 30 Oct 2011 04:20:26 +0000]]></pubdate>
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 <title><![CDATA[]]></title>
 <description><![CDATA[用USB-PPI线，不到一百元钱。]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-124053#1152948.html]]></link>
 <author><![CDATA[xgygc]]></author>
 <category><![CDATA[西门子工控论坛]]></category>
 <pubdate><![CDATA[Sun, 30 Oct 2011 04:07:31 +0000]]></pubdate>
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 <title><![CDATA[]]></title>
 <description><![CDATA[我知道是用PC/PPI和USB/PPI电缆通讯。我现在没有PC/PPI 和USB/PPI电缆，只有一条USB转COM口电缆。问能否连接通讯。如果能通讯 。请问怎么设置PLC.]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-124053#1152750.html]]></link>
 <author><![CDATA[为修修为]]></author>
 <category><![CDATA[西门子工控论坛]]></category>
 <pubdate><![CDATA[Sat, 29 Oct 2011 15:35:30 +0000]]></pubdate>
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 <title><![CDATA[]]></title>
 <description><![CDATA[买好点的usb-com电缆，不然可能通讯电线]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-124053#1152747.html]]></link>
 <author><![CDATA[firmenichyaq]]></author>
 <category><![CDATA[西门子工控论坛]]></category>
 <pubdate><![CDATA[Sat, 29 Oct 2011 15:32:43 +0000]]></pubdate>
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 <title><![CDATA[]]></title>
 <description><![CDATA[用PC/PPI通讯线或USB/PPI通讯线！]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-124053#1152728.html]]></link>
 <author><![CDATA[ckq]]></author>
 <category><![CDATA[西门子工控论坛]]></category>
 <pubdate><![CDATA[Sat, 29 Oct 2011 14:38:25 +0000]]></pubdate>
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 <description><![CDATA[自己在顶一下，，，，谢谢，请教。]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-124053#1152634.html]]></link>
 <author><![CDATA[为修修为]]></author>
 <category><![CDATA[西门子工控论坛]]></category>
 <pubdate><![CDATA[Sat, 29 Oct 2011 12:40:21 +0000]]></pubdate>
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