手機(jī)號
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黃工(先生)
普通會員
黃工 (先生)
abb cma114
身在自動(dòng)化行業(yè)有多少人知道dcs系統(tǒng)中動(dòng)態(tài)數(shù)據(jù)服務(wù)器的設(shè)置方法呢。本文針對其設(shè)置方法做一個(gè)詳細(xì)介紹，供大家參考。
dcs控制系統(tǒng)屬于基礎(chǔ)自動(dòng)化，mis系統(tǒng)側(cè)重于辦公自動(dòng)化。這兩者在反映速度上的區(qū)別很大，dcs是屬于秒級的，而mis是以小時(shí)或更長時(shí)間為單位的。所以這兩者之間必須要有隔離設(shè)備，這個(gè)隔離設(shè)備就是動(dòng)態(tài)數(shù)據(jù)服務(wù)器。它的功能是生產(chǎn)過程監(jiān)控;歷史數(shù)據(jù)的存儲及管理;統(tǒng)計(jì)質(zhì)量控制;設(shè)備預(yù)防性維護(hù);設(shè)備故障診斷;生產(chǎn)優(yōu)化等。
dcs采集現(xiàn)場的生產(chǎn)過程數(shù)據(jù)通過通訊網(wǎng)絡(luò)把數(shù)據(jù)傳給操作站和動(dòng)態(tài)數(shù)據(jù)服務(wù)器。動(dòng)態(tài)數(shù)據(jù)服務(wù)器是采集生產(chǎn)全過程的模擬信號或邏輯信號，所以它的采集速度是海量的。要經(jīng)過數(shù)據(jù)淘金，將信號送到生產(chǎn)管理部門。
通常情況下，一個(gè)企業(yè)往往有幾種不同牌號的dcs、plc，要把這幾種信號都集中到動(dòng)態(tài)數(shù)據(jù)服務(wù)器中，最好要選擇一個(gè)通用顯示平臺。在這個(gè)平臺上來顯示不同型號的dcs、plc的信號。通用顯示平臺可采用fix、intouch、組態(tài)王、synall等軟件，開發(fā)各種dcs和plc的驅(qū)動(dòng)軟件。
最近出廠的dcs采用通用操作站，它采用nt操作系統(tǒng)，監(jiān)控軟件就是fix、intouch.不同dcs型號采用不同的驅(qū)動(dòng)軟件。各種dcs之間信號傳輸采用opc服務(wù)器聯(lián)接，也可以把少量的信號送到mis系統(tǒng)的服務(wù)器中。fix、intouch等軟件都能存儲歷史數(shù)據(jù)，幾十個(gè)信號可存儲280天之多。如要存儲更多的歷史數(shù)據(jù)，可以采用osi歷史數(shù)據(jù)庫，它可以存儲三年以上。這些通用監(jiān)控軟件都有osi的接口。
老一代的dcs系統(tǒng)的操作站無論操作系統(tǒng)還是監(jiān)控軟件都是專用的，和其它系統(tǒng)通訊都非常困難。如要建立系統(tǒng)間的互聯(lián)，通過計(jì)算機(jī)接口單元建立動(dòng)態(tài)數(shù)據(jù)服務(wù)器，監(jiān)控軟件仍然可以使用通用的，在nt平臺上運(yùn)行，但它的數(shù)據(jù)只能上行，不能下行。在設(shè)計(jì)mis系統(tǒng)過程中，最好使用動(dòng)態(tài)數(shù)據(jù)服務(wù)器，不要把dcs和plc數(shù)據(jù)直接送到web否則會影響到 dcs、plc的正常運(yùn)行。至于究竟需要建立多少個(gè)動(dòng)態(tài)數(shù)據(jù)服務(wù)器，由所需采集的數(shù)據(jù)量和數(shù)據(jù)安 全決定(一般情況下，可達(dá)10000點(diǎn))。
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地區(qū)：廊坊
主營產(chǎn)品：富卓液壓,施羅德液壓,海普洛液壓地區(qū)：滄州
主營產(chǎn)品：機(jī)床維修,鑄件,工量具地區(qū)：汕頭
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