ABB  DSQC138  控制器系統(tǒng)備件

ABB  DSQC138  控制器系統(tǒng)備件

ABB  DSQC138  控制器系統(tǒng)備件

DSQC138

DSQC138

DSQC138

為了進一步提高PLC的可靠性，近年來對大型PLC還采用雙CPU構成冗余系統(tǒng)，或采用三CPU的表決式系統(tǒng)。這樣，即使某個CPU出現(xiàn)故障，整個系統(tǒng)仍能正常運行。

　　存儲器

　　存放系統(tǒng)軟件的存儲器稱為系統(tǒng)程序存儲器。

　　存放應用軟件的存儲器稱為用戶程序存儲器。

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