描述
HONEYWELL-51305072-200
DCS是一種“分散式控制系統(tǒng)”，而PLC只是一種(可編程控制器)控制“裝置”，兩者是“系統(tǒng)”與“裝置”的區(qū)別。系統(tǒng)可以實現(xiàn)任何裝置的功能與協(xié)調(diào),PLC裝置只實現(xiàn)本單元所具備的功能.
在網(wǎng)絡(luò)方面,DCS網(wǎng)絡(luò)是整個系統(tǒng)的中樞神經(jīng)，和利時公司的MACS系統(tǒng)中的系統(tǒng)網(wǎng)采用的是雙冗余的100Mbps的工業(yè)以太網(wǎng)，采用的國際標(biāo)準(zhǔn)協(xié)議TCP/IP。它是安全可靠雙冗余的高速通訊網(wǎng)絡(luò)，系統(tǒng)的拓展性與開放性更好.而PLC因為基本上都為個體工作，其在與別的PLC或上位機(jī)進(jìn)行通訊時，所采用的網(wǎng)絡(luò)形式基本都是單網(wǎng)結(jié)構(gòu)，網(wǎng)絡(luò)協(xié)議也經(jīng)常與國際標(biāo)準(zhǔn)不符。在網(wǎng)絡(luò)安全上，PLC沒有很好的保護(hù)措施。我們采用電源,CPU,網(wǎng)絡(luò)雙冗余.
DCS整體考慮方案,操作員站都具備工程師站功能,站與站之間在運行方案程序下裝后是一種緊密聯(lián)合的關(guān)系，任何站、任何功能、任何被控裝置間都是相互連鎖控制, 協(xié)調(diào)控制;而單用PLC互相連接構(gòu)成的系統(tǒng)，其站與站（PLC與PLC）之間的聯(lián)系則是一種松散連接方式，是做不出協(xié)調(diào)控制的功能。
DCS在整個設(shè)計上就留有大量的可擴(kuò)展性接口，外接系統(tǒng)或擴(kuò)展系統(tǒng)都十分方便，PLC所搭接的整個系統(tǒng)完成后，想隨意的增加或減少操作員站都是很難實現(xiàn)的。
產(chǎn)品承諾：
保?證?全新原裝進(jìn)口,
保?證?安全準(zhǔn)時發(fā)貨，
保?證售后服務(wù)質(zhì)量，
優(yōu)勢價格，大量現(xiàn)貨。
主營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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