描述

1C31164G02

從數(shù)據(jù)庫(kù)來(lái)說(shuō)。
DCS一般都提供統(tǒng)一的數(shù)據(jù)庫(kù)。換句話說(shuō)，在DCS系統(tǒng)中一旦一個(gè)數(shù)據(jù)存在于數(shù)據(jù)庫(kù)中，就可在任何情況下引用，比如在組態(tài)軟件中，在監(jiān)控軟件中，在趨勢(shì)圖中，在報(bào)表中……而PLC系統(tǒng)的數(shù)據(jù)庫(kù)通常都不是統(tǒng)一的，組態(tài)軟件和監(jiān)控軟件甚至歸檔軟件都有自己的數(shù)據(jù)庫(kù)。為什么常說(shuō)西門子的S7 400要到了414以上才稱為DCS？因?yàn)槲鏖T子的PCS7系統(tǒng)才使用統(tǒng)一的數(shù)據(jù)庫(kù)，而PCS7要求控制器起碼到S7 414-3以上的型號(hào)。
從時(shí)間調(diào)度上來(lái)說(shuō)。
PLC的程序一般不能按事先設(shè)定的循環(huán)周期運(yùn)行。PLC程序是從頭到尾執(zhí)行一次后又從頭開始執(zhí)行。（現(xiàn)在一些新型PLC有所改進(jìn)，不過(guò)對(duì)任務(wù)周期的數(shù)量還是有限制）而DCS可以設(shè)定任務(wù)周期。比如，快速任務(wù)等。同樣是傳感器的采樣，壓力傳感器的變化時(shí)間很短，我們可以用200ms的任務(wù)周期采樣，而溫度傳感器的滯后時(shí)間很大，我們可以用2s的任務(wù)周期采樣。這樣，DCS可以合理的調(diào)度控制器的資源。

產(chǎn)品承諾：
保?證?全新原裝進(jìn)口,
保?證?安全準(zhǔn)時(shí)發(fā)貨，
保?證售后服務(wù)質(zhì)量，
優(yōu)勢(shì)價(jià)格，大量現(xiàn)貨。

主營(yíng)DCS系統(tǒng)配件
機(jī)器人系統(tǒng)配件
大型伺服系統(tǒng)配件
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172 Sundstrand-Saue?r-Danfoss Hydraulic Series 22 Pump

173 Sundstrand-Saue?r-Danfoss Hydraulic Series 22 Pump

170 Sundstrand-Saue?r-Danfoss Hydraulic Series 22 Pump

167 Sundstrand-Saue?r-Danfoss Hydraulic Series 22 Pump

174 Sundstrand-Saue?r-Danfoss Hydraulic Series 22 Pump

169 Sundstrand-Saue?r-Danfoss Hydraulic Series 22 Pump

171 Sundstrand-Saue?r-Danfoss Hydraulic Series 22 Pump

168 Sundstrand-Saue?r-Danfoss Hydraulic Series 22 Pump

166 Sundstrand-Saue?r-Danfoss Hydraulic Series 22 Pump

NEW Sundstrand-Saue?r-Danfoss Hydraulic Series 47 Pump

NEW Sundstrand-Saue?r-Danfoss Hydraulic Series 23 Pump

NEW Sundstrand-Saue?r-Danfoss Hydraulic Series 47 Pump

58 Sundstrand-Saue?r-Danfoss Hydraulic Series 47 Pump

54 Sundstrand-Saue?r-Danfoss Hydraulic Series 47 Pump

56 Sundstrand-Saue?r-Danfoss Hydraulic Series 47 Pump

51 Sundstrand-Saue?r-Danfoss Hydraulic Series 47 Pump

55 Sundstrand-Saue?r-Danfoss Hydraulic Series 47 Pump

53 Sundstrand-Saue?r-Danfoss Hydraulic Series 47 Pump

49 Sundstrand-Saue?r-Danfoss Hydraulic Series 47 Pump

52 Sundstrand-Saue?r-Danfoss Hydraulic Series 47 Pump

50 Sundstrand-Saue?r-Danfoss Hydraulic Series 47 Pump

57 Sundstrand-Saue?r-Danfoss Hydraulic Series 47 Pump

New Sundstrand-Saue?r-Danfoss Sundstrand microcontroller

NEW Sundstrand-Saue?r-Danfoss Hydraulic Series 47 Pump

Sundstrand-Saue?r-Danfoss Hydraulic Series 47 Pump CR

Sundstrand-Saue?r-Danfoss Hydraulic Series 47 Pump DB

Sundstrand-Saue?r-Danfoss Hydraulic Series 47 Pump DC

Sundstrand-Saue?r-Danfoss Hydraulic Series 47 Pump CS

NEW Sundstrand-Saue?r-Danfoss Hydraulic Series 47 Pump

NEW Sundstrand-Saue?r-Danfoss Hydraulic Series 47 Pump 5

NEW Sundstrand-Saue?r-Danfoss Hydraulic 47 Pump 6

NEW Sundstrand-Saue?r-Danfoss Hydraulic 47 Pump 7

DANFOSS / TRANE 40HP 480VAC 1-1000HZ MOTOR DRIVE

Sundstrand-Saue?r-Danfoss Hydraulic Series 22 Pump QG

Sundstrand-Saue?r-Danfoss Hydraulic Series 22 Pump QF

159 Sundstrand-Saue?r-Danfoss Hydraulic Series M46 Motor

160 Sundstrand-Saue?r-Danfoss Hydraulic Series M46 Motor

NEW Sundstrand-Saue?r-Danfoss Hydraulic Series 47 Pump

Sundstrand-Saue?r-Danfoss Hydraulic Series 21 Pump A73

one Sundstrand-Saue?r-Danfoss new Sundstrand series 21

Sundstrand-Saue?r-Danfoss Hydraulic Series 21 Pump A71

Sundstrand-Saue?r-Danfoss Hydraulic Series 21 Pump A72

Sundstrand-Saue?r-Danfoss Hydraulic Series 47 Pump DJ

Sundstrand-Saue?r-Danfoss Hydraulic Series 47 Pump DF

PLC模塊，可編程控制器，CPU模塊，IO模塊，AI模塊，通訊模塊。AB/施耐德/ABB/GE/本特利/西屋/英維斯/霍尼韋爾/黑馬/FU克斯波羅

15天包退換一年質(zhì)保大量現(xiàn)貨? 國(guó)內(nèi)實(shí)力庫(kù)存商家

1C31164G02

描述

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