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 <title><![CDATA[S7-200PLC的固件可以进行升级嘛？]]></title>
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 <description><![CDATA[[quote]引用第2楼zheng66661于2019-12-15 17:28发表的&nbsp;&nbsp;:
升级有什么用途吗
[/quote]
用途肯定是有，功能增强，比如早期的固件不支持485上传下载程序，跟新后就可以了，具体细节需要查下资料，没用是你没碰到而已]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-1676459#2092951.html]]></link>
 <author><![CDATA[renzhe]]></author>
 <category><![CDATA[西门子工控论坛]]></category>
 <pubdate><![CDATA[Sun, 15 Dec 2019 13:27:08 +0000]]></pubdate>
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 <description><![CDATA[升级有什么用途吗]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-1676459#2092933.html]]></link>
 <author><![CDATA[zheng66661]]></author>
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 <pubdate><![CDATA[Sun, 15 Dec 2019 09:28:57 +0000]]></pubdate>
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 <description><![CDATA[200SMART 可以升级]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-1676459#2092864.html]]></link>
 <author><![CDATA[renzhe]]></author>
 <category><![CDATA[西门子工控论坛]]></category>
 <pubdate><![CDATA[Sun, 15 Dec 2019 00:44:54 +0000]]></pubdate>
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