描述
A4H254-8F8T
因為控制的方式不同，以前大家分為過程控制和順序控制或者離散控制兩類，其中過程控制來源于早期的過程儀表控制，后逐步發(fā)展為DCS，而順序控制來源于早期的繼電器組，最后發(fā)展出了PLC，但隨著微電子、軟件、硬件和通信技術(shù)的發(fā)展，目前很多DCS和PLC都采用同樣的或者類似技術(shù)平臺，雙方之間區(qū)別越來越小，大多數(shù)新一代的控制系統(tǒng)都不再區(qū)分DCS或者PLC，不過新一代控制器是否叫PLC還是DCS或者FCS、PAC、NCS，這并沒有得到廣大廠商的認同。特別是網(wǎng)絡(luò)和現(xiàn)場總線的發(fā)展，使DCS越來越?jīng)]有單獨存在的價值，很多的國際大公司都把新一代的控制系統(tǒng)合并了DCS、PLC、IPC、FCS功能。
為了簡化各種概念，我們根據(jù)項目的大小、項目的重復(fù)度把PLC的應(yīng)用分為工程和OEM兩部分，其中工程主要指造紙、石化、冶金、水泥、大型港機等項目特征明顯的自動化系統(tǒng)，而OEM主要指各種使用PLC的裝備，如電梯、擠出機、包裝機、回流焊、點膠機、特種車輛等，”這兩大塊構(gòu)成了PLC的最主要的市場。
產(chǎn)品承諾：
保?證?全新原裝進口,
保?證?安全準時發(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
機器人系統(tǒng)配件
大型伺服系統(tǒng)配件
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