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liuliangdt
liuliangdt
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樓主  發(fā)表于: 2011-05-27 22:28
我想問(wèn)一下各位大哥們，仿真器跟PLC到底有多大的區別。語(yǔ)句指令：
LD  >=  D0  K2995    與   LD  >=   K2995    D0    有什么區別？
我仿真的時(shí)候 LD  >=  K2995  D0   就不執行或者是錯誤了。
還有雙線(xiàn)圈，是特意寫(xiě)的。在仿真時(shí)候就是沒(méi)有輸出。
liuliangdt
liuliangdt
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1樓  發(fā)表于: 2011-05-28 20:53
引用
引用第1樓yanzhi2008于2011-05-27 23:39發(fā)表的  :
LD  >=  D0  K2995 是D0大于或等于K2995時(shí)導通， LD  >=   K2995    D0    是K2995大于或等于D0是導通，仿真只是對初學(xué)者，步數大點(diǎn)的程序根本不必要，寫(xiě)好了上機調試。






寫(xiě)好就仿真運行一下，上機時(shí)心理也塌實(shí)點(diǎn)嗎？
謝謝你，哥。

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