库 平台的 SIS 系统解决方案,以其卓越的性能、易用的组 态、安全可靠的系统架构、开放式的互连性为实现 SIS 系 统的应用搭建了优异的平台。SIS 系统位于 DCS、PLC 及现场总线等自动化系统之上, 在全厂范围内采集、汇集以实时数据库为主体的生产数 据。网络主要采用了分层分布式设计,整个 SIS 系统分为 三层,下层为 SIS 接口层网络,采用独立接口机连接各个 独立控制系统进行数据采集。中间为 SIS 应用层网络,连 接 SIS 层历史服务器、各计算、分析、维护服务器及值长 站。上层为 SIS/MIS 综合信息发布,包括Web Server 和 浏览客户端。在 SIS 系统中为了提高可靠性,可以配置冗余历史数据库 服务器,将两台互为冗余的历史数据服务器通过双网冗 余星形拓扑结构以太网与电厂各生产系统进行通讯,读 取所有子系统的信息,形成 SIS 的历史数据数据库。
EXTREME NETWORKS 3804 45040 W/45014 45110(3)45210
Extreme Networks 41511 BlackDiamond 8800 48Port 10/100/1000BaseT G48T
Extreme Networks G16X 51051 Black Diamond 6800 WARRANTY
Extreme Networks Summit X250e48t switch 48 ports managed 15103
Extreme Networks 15749 Wireless Access Point
Extreme Networks 10911 EPS500 External AC PSU,500Watt
Extreme Networks 13240 8001050005 Summit 20024
Extreme Networks,Altitude 4611 Indoor Ap
EXTREME NETWORKS 41511 G48T GIGABIT MODULE
Extreme Networks 8800/8810 Series 41211 MSMG8X Aspen Management
Extreme Networks 20048 48 Port 10/100 Ethernet Switch
Extreme Networks 45080 ALPINE 3808 9 SLOT CHASSIS
10016 1000BASELX/LH GBIC for Extreme Networks
Extreme Networks BlackDiamond 8800/8810 41211 MSMG8X Aspen Mgmt Module w 8 GBIC
Extreme Networks Summit X250e24t Managed PoE Switch XOS WARNTY QwikSHIP
Extreme 15761 Extreme Networks Altitude 4511 IEEE 8
5 15700 Extreme Networks Altitude 3002i Dual Radio
EXTREME NETWORKS 15761 Altitude AP4511 AGBN SINGLE RADIO
EXTREME NETWORKS 10925 Summit 550W AC PSU FB 550W AC Power Supply module
EXTREME NETWORKS 10925 Summit 550W AC PSU FB 550W AC Power Supply module
Agilestar 10121 For Extreme Networks
Extreme Networks Summit X250e24t Managed PoE Switch XOS noEARS WARNTY QwikSHIP
Extreme Networks 10BASELR Xenpak Module 4050100014 1310nm
Extreme Networks,TBar Wlan Ap Bracket 10 Pcs
Extreme Networks,Stacking Cable,5.0M Summitstack Stacking Cable 5.0
Extreme Networks Summit X460 AC PSU Power supply hotplug/redundant 10930
Extreme Networks SFP(miniGBIC)transceiver module
EXTREME NETWORKS BLACKDIAMOND 41511 G48T GIGABIT MODULE