產(chǎn)品參數(shù)
品牌	西門子
產(chǎn)品特性	進(jìn)口***
是否進(jìn)口	否
加工定制	否
工作電壓	24VDCV
輸出頻率	50kHz
產(chǎn)品認(rèn)證	UL
系列	6ES7 6ES5
物料編碼	6FC3881-0JA-Z
運輸	快遞物流
時效	3天-
快遞費用	包郵順豐
訂貨號	6FC3881-0JA-Z
包裝方式	普通包裝
可售賣地	全國
型號	6FC3881-0JA-Z

6FC3881-0JA-Z ;
6FC3881-0JA-Z ;
6FC3881-0JA-Z


PLC的處理器（CPU 一般由控制器、運算器和寄存器組成，這些電路都集成在一個芯片內(nèi)。CPU通過數(shù)據(jù)總線、地址總線和控制總線與存儲單元、輸入/輸出接口電路相連接。



與一般的計算機(jī)一樣，CPU是整個PLC的控制中樞，它按PLC中系統(tǒng)程序賦予的功能指揮PLC有條不紊的進(jìn)行工作。CPU主要完成下述工作：



（1）接收、存儲用戶通過編程器等輸入設(shè)備輸入的程序和數(shù)據(jù)。



（2）用掃描的方式通過I/O部件接收現(xiàn)場信號的狀態(tài)或數(shù)據(jù)，并存入輸入映像寄存器或數(shù)據(jù)存儲器中。



（3）診斷PLC內(nèi)部電路的工作故障和編程中的語法錯誤等。



（4） PLC進(jìn)入運行狀態(tài)后，執(zhí)行用戶程序，完成各種數(shù)據(jù)的處理、傳輸和存儲相應(yīng)的內(nèi)部控制信號，以完成用戶指令規(guī)定的各種操作。



（5）響應(yīng)各種外圍設(shè)備(如編程器、打印機(jī)等）的請求。



PLC采用的CPU隨機(jī)型不同而不同， 目前，小型PLC為單CPU系統(tǒng)，中型及大型則采用雙CPU甚至多CPU系統(tǒng)。目前，PLC通常采用的微處理器有三種：通用微處理器、單片微處理器（即單片機(jī)）、位片式微處理器。

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Returns: Not accepted
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