Description
DCS的控制器的变化较小。其变化表现在控制算法的安排、控制算法的多少，存取的I/O点数的多少和内存的大小等，操作系统一般都是专用的。操作站的变化就很大，八十年代以前的操作站，一般没有硬盘及动态流程图，能显示的标签数比较少，例如500个标签（标签指的是AI、DI、回路、开关量的逻辑关系等），八十年代出现了能显示5000个标签的操作站，九十年代出现了能显示30000个标签的操作站。同时，也出现了在微软的NT通用平台上运行的通用显示软件。开始，通用软件只在PLC的操作站上使用，后来也逐渐应用在DCS上。它的标签量可以达到10000个，甚至更多。
Juniper PE-1GE-SFP-QPP SFP-1GE-SX PIC M7i M10i Router
New Juniper DX-3280 Application Acceleration Platform
90 Day Warranty – Free Shipping! DX-3280-SLB-SSL-S-2C
Juniper T640-FPC2 Type2 Flexible PIC Concentrator T640
90 Day Warranty – Free Worldwide Shipping!
Extreme Networks Black Diamond 6808 G16X3 MSM64i G8Ti
90 Day Warranty – We Can Configure to Suit!
Enlarge
Juniper DX-3200-SLB-SSL-N-2C-A DX3200 Load Balancer
90 Day Warranty – Free Shipping!
ADC BigBand Cuda 12000 C12-MM5-CS CMTS Controller Card
90 Day Hardware Warranty – Free Shipping!
Juniper PE-ASII PE-AS2 PIC Adaptive Services M7i M10i
90 Day Warranty – Free Overnight Shipping!
Cisco MGX 8850 Switch AXSM-4-622 SM, 4 OC-12c/STM-4
90 Day Warranty – Free Overnight Shipping
New Motorola DSR-6000 Integrated Receiver/Decoder
90 Day Hardware Warranty – Free Shipping!
Summa Four Cisco VCO IV K Switch 16T1 2 x DC
Nortel 8668 DS1404068 Metro Ethernet Services Module
90 Day Warranty – Free Overnight Shipping!
