為了保證系統(tǒng)的性,使用了復(fù)雜的通信規(guī)約和檢錯(cuò)技術(shù)。所謂通信規(guī)約就是一組規(guī)則,用以保證所傳輸?shù)臄?shù)據(jù)被接收,并且被理解得和發(fā)送的數(shù)據(jù)一樣。
目前在DCS系統(tǒng)中一般使用兩類通信手段,即同步的和異步的,同步通信依*一個(gè)時(shí)鐘信號(hào)來調(diào)節(jié)數(shù)據(jù)的傳輸和接收,異步網(wǎng)絡(luò)采用沒有時(shí)鐘的報(bào)告系統(tǒng)。
Rosedale Filter Pot Cartridge Bag Vessel 8-30-3F-2-150-S-B-S-PB Stainless Steel
General Electric Circuit Breaker TS253F 2500 Amp TS253T20 Trip GE 600V 2000A
Russelectric 400 Amp 120/208 Automatic Transfer Switch RMT-4003CE 3 PH 4 Wire
Square D PHF2036 1200 Amp Breaker 600 VAC 65kA 3P 1200A 480V/100kA 2000A Frame
Cutler Hammer WH 600 Amp 600V IBP-LD Breaker Bus Plug Switch IBPLD 5D00448G01
Square D MGP36600 600 Amp 600V PowerPact Circuit Breaker MG 600 MGP 36600
Modicon TSXETY110WS TSX Premium TSX57 ETW TCP/IP WS Module ETY110WS Ethernet 5 T
Allen Bradley Size 7 motor contactor 120V Coil AB Sz7 Sz 7 X-326791
Zenith 225 Amp Transfer Switch 277/480 V 3PH ZTS22E-7AA
Zenith 225 Amp Transfer Switch 480 V 3PH ZTS22EC-5AAT