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PLC可編程控制器

歐姆龍PLC執行用戶程序的特點

發布日期：2022-04-26 點擊率：94 品牌：歐姆龍_Omron

    歐姆龍PLC與其它PLC的執行基本相同，執行用戶程序的特點如下：

    ①按梯形圖自左向右、自上而下逐次執行程序

    ②執行程序時所需數據取自于：

    輸入映像寄存器

    元件映像寄存器

    ③輸入映像寄存器和元件映像寄存器中的數據

    輸入映像寄存器：在一個掃描周期中保持不變

    元件映像寄存器：在一個掃描周期中可讀可寫

    ④每個掃描周期I/O刷新階段集中讀入/讀出數據

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