廈門泰尼電氣有限公司
參考價: | 面議 |
- 140XTS01209140XTS012 產(chǎn)品型號
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- 經(jīng)銷商 廠商性質(zhì)
- 廈門市 所在地
訪問次數(shù):154更新時間:2017-02-27 11:59:40
輸入接口用于接收和采集兩種類型的輸入信號,一類是由按鈕、轉(zhuǎn)換開關(guān)、行程開關(guān)、繼電器觸頭等開關(guān)量輸入信號;另一類是由電位器、測速發(fā)電機和各種變換器提供的連續(xù)變化的模擬量輸入信號。
以圖2所示的直流輸入接口電路為例,R1是限流與分壓電阻,R2與C構(gòu)成濾波電路,濾波后的輸入信號經(jīng)光耦合器T與內(nèi)部電路耦合。當輸入端的按鈕SB接通時,光耦合器T導通,直流輸入信號被轉(zhuǎn)換成PLC能處
140XTS01209
140XTS01209
3)其它接口
若主機單元的I/O數(shù)量不夠用,可通過I/O擴展接口電纜與I/O擴展單元(不帶CPU)相接進行擴充。 PLC還常配置連接各種外圍設備的接口,可通過電纜實現(xiàn)串行通信、EPROM寫入等功能。
4. 編程器
編程器作用是將用戶編寫的程序下載至PLC的用戶程序存儲器,并利用編程器檢查、修改和調(diào)試用戶程序,監(jiān)視用戶程序的執(zhí)行過程,顯示PLC狀態(tài)、內(nèi)部器件及系統(tǒng)的參數(shù)等。
編程器有簡易編程器和圖形編程器兩種。簡易編程器體積小,攜帶方便,但只能用語句形式進行聯(lián)機編程,適合小型PLC的編程及現(xiàn)場調(diào)試。圖形編程器既可用語句形式編程,又可用梯形圖編程,同時還能進行脫機編程。
目前PLC制造廠家大都開發(fā)了計算機輔助PLC編程支持軟件,當個人計算機安裝了PLC編程支持軟件后,可用作圖形編程器,進行用戶程序的編輯、修改,并通過個人計算機和PLC之間的通信接口實現(xiàn)用戶程序的雙向傳送、監(jiān)控PLC運行狀態(tài)等。
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EUROTHERM CONTROLS Circuit Board # AE131241D Rev 013
Honeywell Excel 10 Smart VAV Controller W7751 H2017
Dec DS-TZ89N-VW 35/70gb Blue Canister
TDK Power Supply 100-120/200-240VAC SS-PSU-500 19877-06
Associated Research Vibroground 263 Resistance Tester
SUN 501-4884 SUN Graphic UPA I/O Board Real INV 5014790
Festo SLZ-50-100-KF-AK-CV-CH 145 PSI Guide Cylinder
Quarter Master Chief Valve Actuator S92XWJ
WESTINGHOUSE Alto 818SX ACCESS CONTROL ALARM 8 DOOR
Festo Slide Guide Unit 34509 FENG-50-200 KT FENG50200
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SPECTRONICS 624/MXADM NSFP 624MXADM
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HP Designjet Z3100 24-in Printer PCA Q5669-60245
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