品牌:施耐德 | 規格:LXM15MD28N4 | 材質:LXM15MD28N4 |
產地:法國 |
LXM15MD28N4
LXM15MD28N4
LXM15MD28N4
CPU是可編程控制器的控制中樞,相當於人的大腦。CPU一般由控制電路、運算器和寄存器組成。這些電路通常都被封裝在一個集成的芯片上。CPU通過地址總線、數據總線、控制總線與存儲單元、輸入輸出接口電路連接。CPU的功能有:它在係統監控程序的控制下工作,通過掃描方式,將外部輸入信號的狀態寫入輸入映象寄存區域,PLC進入運行狀態後,從存儲器逐條讀取用戶指令,按指令規定的任務進行數據的傳送、邏輯運算、算術運算等,然後將結果送到輸出映像寄存區域。
CPU常用的微處理器有通用型微處理器、單片機和位片式計算機等。通用型微處理器常見的如Intel公司的8086、80186、到Pentium係列芯片,單片機型的微處理器如Intel公司的MCS-96係列單片機,位片式微處理器如AMD 2900係列的微處理器。小型PLC 的CPU多採用單片機或CPU,中型PLC的CPU大多採用16位微處理器或單片機,大型PLC的CPU多用高速位片式處理器,具有高速處理能力。
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