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 <description><![CDATA[读取系统时钟SFC1，时间继电器不需要DB块：&nbsp;&nbsp; 如 A I0.0&nbsp;&nbsp; L S5#10S&nbsp;&nbsp; SD T1&nbsp;&nbsp;&nbsp;&nbsp;i0.0 为1&nbsp;&nbsp; 10S后T1为1]]></description>
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 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Tue, 21 Apr 2020 12:08:38 +0000]]></pubdate>
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 <description><![CDATA[1、读写系统时钟，看帮助文件挺好理解的；
2、使用多重背景]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-1680747#2114151.html]]></link>
 <author><![CDATA[ajunn]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Tue, 21 Apr 2020 06:16:55 +0000]]></pubdate>
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