140ACO02000

140ACO02000

140ACO02000

PLC系統(tǒng)組成及各部分的功能
一．系統(tǒng)組成。
二．各部分的作用。
1． CPU運算和控制中心
起“心臟”作用。
縱：當(dāng)從編程器輸入的程序存入到用戶程序存儲器中，然后CPU根據(jù)系統(tǒng)所賦予的功能（系統(tǒng)程序存儲器的解釋編譯程序），把用戶程序翻譯成PLC內(nèi)部所認(rèn)可的用戶編譯程序。
橫：輸入狀態(tài)和輸入信息從輸入接口輸進，CPU將之存入工作數(shù)據(jù)存儲器中或輸入映象寄存器。然后由CPU把數(shù)據(jù)和程序有機地結(jié)合在一起。把結(jié)果存入輸出映象寄存器或工作數(shù)據(jù)存儲器中，然后輸出到輸出接口、控制外部驅(qū)動器。

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: 陳莉萍（）
4008555103轉(zhuǎn)025 
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: 1605182147

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