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keven1
keven1
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樓主  發(fā)表于: 2014-11-23 08:11
請教各位，那些品牌的小型PLC，掃描時(shí)間在0.1ms/千步！
王春茂
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1樓  發(fā)表于: 2014-11-24 11:14
引用
引用第2樓keven1于2014-11-23 08:42發(fā)表的 :

FX3U就沒(méi)有那么快，100步要0.4ms！
就不知道那些小型PLC，可達到0.1ms/千步！



這0.4MS掃描周期中包括共同處理，例如I/O刷新，通訊處理等這些時(shí)間你就算PLC中是空的程序，這些時(shí)間也不會(huì )少的，你試試200步肯定沒(méi)有0.8ms，另外現在PLC手冊中說(shuō)的指令執行速度一般指的是基本指令，新出的PLC基本都能達到0.1MS/千步，但是應用指令基本都打不到你這個(gè)要求
本人已換手機號碼為13929895518，舊號碼將停用

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