MDD090B-N-040-N2M-110GA1只能通過標(biāo)準(zhǔn)的OPC進(jìn)行通信,這意味著需要增加一臺PC來采用OPC獲取數(shù)據(jù)并使用如ODBC(開放數(shù)據(jù)厙互連)、ADO(數(shù)據(jù)自動化設(shè)計)和XML(可擴(kuò)充描述語言)這樣的標(biāo)準(zhǔn)把數(shù)據(jù)傳送給企業(yè)。為了能有效地把現(xiàn)場數(shù)據(jù)傳送到ERP系統(tǒng)中,控制系統(tǒng)必須能直接和外部數(shù)據(jù)庫通信,據(jù)此,完全可以使用PAC來完成這些工作。
*網(wǎng)絡(luò)傳送數(shù)據(jù)對數(shù)據(jù)加密
MDD090B-N-040-N2M-110GA1在把控制系統(tǒng)與數(shù)據(jù)庫和網(wǎng)絡(luò)連接時,是需要考慮安全問題的。出于安全的利益,許多廠商選擇不把自動化系統(tǒng)和企業(yè)數(shù)據(jù)庫相連,但是對于大多數(shù)廠商而言,連接所帶來的好處要遠(yuǎn)大于安全方面的顧慮。盡管可以對PLC加鎖來防止他人入侵工廠的網(wǎng)絡(luò),但是由于PLC通過以太網(wǎng)發(fā)送非加密包,所以它并不適合用于防止黑客入侵。PAC在通過網(wǎng)絡(luò)傳送數(shù)據(jù)時,可以對數(shù)據(jù)加密。盡管目前這還不是需要考慮的第一因素,但是在將來它將是廠房內(nèi)分布式系統(tǒng)采用PAC的主要原因。
*MDD090B-N-040-N2M-110GA1多種速度與多個循環(huán)的確定性應(yīng)用
PLC只能以固定的速度運行,而且它并不是為能以不同循環(huán)速率獨立進(jìn)行處理所設(shè)計的。但如今,復(fù)雜的控制系統(tǒng)中常需要多種速率的確定性應(yīng)用,它需要有多個循環(huán),每個循環(huán)以不同的速率運行。這就要求能進(jìn)行并行處理,而只有在PAC上運行的操作系統(tǒng)才具有這樣的特性。
3.3靈活堅固的結(jié)構(gòu)
*適合于工廠環(huán)境
MDD090B-N-040-N2M-110GA1選擇PLC的一個常見原因是它能在工廠的環(huán)境下正常工作。然而,絕大部分PLC是安裝在向列箱內(nèi)。然而在這樣的環(huán)境里,PXI平臺附加的冷卻裝置,堅固的外表面和增強的抗沖擊和振動指標(biāo)都使系統(tǒng)具有和PLC相同的可靠性。
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MDD090B-N-040-N2M-110GA1
MDD090B-N-040-N2M-110GL1
MDD112D-N-020-N2L-130-PB2
MDD093C-N-030-N2L-11PBG
MDD-093B-F-020-N2L-110GA0
MDD090C-N-030-N2M-110GB2
MDD-093A-N-060-N2L-110GB0
MDD090C-N-040-N2M-110GL1
MDD093C-N-020-N2M-110PAO
MDD112D-N-030-N2L-130PB0
MDD090C-N-030-N2M-110GB1
MDD112B-N-020-N2L-130-PB6
MDD112D-N-030-N2L-130PA0
MDD112D-N-030-N2M-130PB0
MDD112C-N-030-N2M-130PB2
MDD071C-N-060-N2T-095GB2
MDD065B-N-040-N2L-095GA0
MDD090B-N-030-N2L-110PA0
MDD071B-N-040-N2M-095PB1
MDD093B-N-030-N2L-110PB0
MDD093C-N-030-N2L-110PB0
MDD112D-N-030-N2L-130PB0
MDD112C-N-030-N2M-130GB2
MDD112D-N-030-N2M-130PB2
MDD071B-N-040-N2M-095PB1
MDD112D-N-030-N2L-130PB0
MDD093C-N-040-N2M-110GB0
MDD065B-N-040-N2L-095GB0
MDD090C-N-020-N2L-110PB0
MDD093A-N-030-N2L-110PB0
MDD112B-N-040-N2L-130PA0
MDD090A-N-030-N2L-110PB0
MDD090C-N-030-N2L-110PB0
MDD071A-N-030-N2T-095PB0
MDD093A-N-030-N2L-110GB0
MDD112B-N-040-N2L-130PA0
MDD071C-N-030-N2S-095GB0
MDD093C-N-020-N2L-110GA0
MDD090C-N-030-N2L-110PB0
MDD090C-N-030-N2L-A110GBO
MDD071C-N-030-N2L-095GA0
MDD093B-N-020-N2L-110PB0
MDD093B-N-040N2L-110PB0
MDD12B-N-030-N2L-130PA0
MDD093C-N-030-N2L-110GA0
MDD112C-L-020-N2L-130PB0
MDD112D-N-030-N2M-130PB2
MDD093B-N-020-N2L-110PA0
MDD093A-N-030-N2L-110GA0
MDD112C-N-030-N2M-130GA0
MDD112B-N-030-N2M-130PB2
MDD112B-N-030-N2M-130PB0
MDD093B-N-020-N2M-110PB2
MDD112C-N-040-N2M-130GB2
MDD090C-N-030-N2M110PB0
MDD112C-N-030-N2M-130GB1
MDD112C-N-030-N2M-130PB0
MDD090C-N-030-N2M-130PB0
MDD093B-N-020-N2L-110GA0
MDD090C-N-040-N2M-110GA1
MDD090C-N-030-N2M-110GB0
MDD093A-N-030-N2L-110GA0
MDD065B-N-040-N2M-095Gb1
MDD071A-N-040-N2M-095PB0
MDD090C-N-030-N2M-110GB0
MDD112D-N-030-N2M-130PB0
MDD093B-N-020-N2L-110PA0
MDD093C-N-030-N2M-110PA1
MDD112D-N-020-N2L-130-PBO
MDD112C-N-020-N2L-130-PB2
MDD090-N-020-N2L-110PBO
MDD112C-N-030-N2L-130PBO
MDD112B
MDD112D-L-015-N2L-130PB0
MDD112D-N-030-N2L-130PB0
MDD093A-N-060-N2L-130PB0
FOXBORO 821GM-IS1NL2
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