IC660EBA020
IC660EBA020
IC660EBA020
IC660EBA020
一般讲DCS由四部份组成：I/O板、控制器、通讯网络和操作站。I/O板主要完成模拟和数字的转换（A/D和D/A转换）；控制器是DCS的核心部件，任务是完成以PID为主要功能的过程控制；操作站将生产过程与人相连，使人员达到监控、管理生产过程的目的；而通讯网络则是控制器与操作站之间的纽带。
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2.1.2 DCS系统的发展
DCS是继1969年PLC问世后，由Honeywell公司在1975年首先推出TDC2000，当时它只有模拟量控制。随后出现的DCS有MAX-1、RS3、日本横河的YEPARK MARKⅡ、东芝的TOSDICDCS等。这个时期的DCS产品比较注重控制功能的实现，系统的设计重点是现场控制站。人机界面功能相对较弱，系统均由专有产品构成。
八十年代，随着微处理器运算能力的增强，超大规模集成电路集成度的提高和成本的不断降低，第二代DCS产品出现了。它的最大特点是引入了局域网作为系统骨干。在功能上增加了顺序控制、逻辑控制等，加强了系统管理站的功能，人机界面功能更加完善。
八十年代后期，为适应信息社会发展的需要，加强信息管理，开发高一层次的信息管理系统，使DCS向高层次发展，出现了第三代DCS产品。第三代产品在开放性上有了很大改善，增加了上层网络，将生产的管理功能纳入到系统中。
2.1.3 DCS系统功能
当前DCS系统的控制技术比较成熟和完善的。很多系统开发商都有自己公司的一整套解决方案。利用现存的技术将会享有系统集成容易、可靠性高、操作性好等方面的优势。
Dell PE 1855 10 x Dual 3.4GHz 20 x 147GB HDDs 60GB RAM
APC Symmetra LX SYA8K16P 8kVA Power Array UPS System
100 Itron 26 Digit Fluorescent Display DC269A2A XCB 460
SMC TigerSwitch 10G Managed Layer-2 Switch - SMC8708L2
Newcon Optik LRB 4000CI Laser Rangefinder Binoculars
Dell PE 1855 5 x Dual 3.2GHz 10 x 147GB HDD 14GB RAM
Wavecrest Digital Time System DTS-2075
Signal Technology Altera 32 Channel Interface Board
Cisco Systems DSL Access Concentrator
National Instruments PXI-1002 PXI Chassis with Plug-Ins
Hewlett Packard HP 8568A and 85662A Spectrum Analyzer
DLI MIL-4000N 4-Channel Network Logging Module
IBM x460 4 Xeon @ 3.33GHz Server 64GB RAM 6x73GB HDDs
IBM MXE 460 4 Xeon 3.36GHz Server 64GB RAM 6x73GB HDDs
Coryell & Wiprud EV-4014PLD Quad Digital Receiver Board
Cross Match ID500 Ten-Print Live Scan System
Newbridge Vivid Route Server 90-3113-01
Infortrend EonStor A12E-G2121 iSCSI to SATA II Raid
Infortrend EonStor A12U-G1A3 SCSI-to-SATA RAID
Infortrend EonStor ESA12F-G1A2 FC-to-SATA RAID
Natural Microsystems AG6000C Board/Rear Transition Card
Princeton Gamma Tech Prism X-ray Detector Spectrometer
Oxford Microanalysis Group X-ray Detector Spectrometer
Motorola PPC/PowerCore-6?750 128S-400-L1024-?8/C8 VME
Parker GV6K-U6E Gemini Servo
IKA KS 260 Basic Orbital Lab Shaker with Attachment
IKA HS 260 Basic Reciprocating Lab Shaker + Attachment
Stanford Research Systems SR510 Lock-In Amplifier
Hewlett Packard HP 85685A Preselector 20Hz - 2GHz
IKA HS 501 Digital Low Profile Laboratory Shaker
Dell 1950 Quad Core 2.5GHz 2x160GB HDD 8GB Dell WRNTY!!
Dell 1950 Quad-Core 2.5GHz 2x160GB HDD 8GB Dell WRNTY!!
Tektronix TLS 216 Logic Scope
Microscan MS-7080 Fixed-Mount Scanner FIS-7080-0001D
Schmidt SIGMAWIG E7087-66205 Heat Exchanger
Molectron 3Sigma Laser Power Energy Meter + J8LP Probe
AFL WP02451D1012 24-Fiber 50/125 PVDF PlenumCable 300m
Centrepoint Talkswitch 484 CT.TS001 PBX Phone System
Adtech Spirent SX/13 DataLink Channel Simulator with T1
Amtren Corporation Flex Writer DVD-RW SE2-FP & Printer
Great Working! Canon Data Projector SX6
Fargo Direct To Card 400-FD - 044102 S/N A5110397
Tektronix 1765 & WFM 601 Vector Waveb Monitors
Cyonics Laser 2201-40RD-40MLA Multiline Argon ION Laser
Winnov Videum Quattro Video Capture PCI Card
Neuro Logic RFT-15-232 1U rackmount VTxx/ANSI Terminal
RGB SpeedBridge Video Rate Processor with Touchscreen
Hewlett Packard HP 5507B Laser Position Transducer
Motorola VME162PA 242LSE Board
HP Hewlett-Packard Model 743
Koldwave Airmaster 3AK2412 Air-Cooled Conditioner
Stec Mass Flow Controller SEC 4400RC 290 Hydrogen Gas
Stec Mass Flow Meter SEF-7330R-293 Nitrogen Gas
Dell PE 6850 Dual Xeon 7040 3GHz 4GB 5x73GB Dell Wrnty
Hewlett Packard HP 54120A Digitizing Oscilloscope
HP Hewlett-Packard Model 743
NetApp DS14 Disk Array Xyratex RS-1400-FC PBCI 504GB
Sharp XG-MB65X DLP Theatre Projector
Xantech 6.4" Smartpad LCD Video Touchpanel - SPLCD64VW
Cisco Systems NI-2-DS3/E3-DS3?/E3 800-05181-03
New! HP C8085A LaserJet 9000 3000-Sheet Stacker/Stapler
Galil DMC-1780 ISA Optima Motion Controller Board
National Instruments NI PXI-2503 Relay Multiplexer
New! Agilent HP 10705A Single Beam Laser Interferometer
Paradyne 8965 ADSL2 24 Port Line Card
HP Agilent 3235 Switch / Test Unit Chassis
HP RadiSys EPC-7 EXP-MX500 EPC7 RADI-EPC7 w/ EXM-13A
MegaRAID SCSI 320-4X (531 Series) 5314010328 LSI Logic
MegaRAID SCSI 320-4X - 531 Series 5314010328 LSI Logic
LSi Logic 8480E 3Gbs SAS Raid Adapter with Battery
Juniper SSG-20-SB Secure Services Gateway
Blonder Tongue AP60550B Agile Heterodyne Processor
Hewlett Packard HP 54750A Digitizing Oscilloscope
Agilent N2771A High-Voltage Probe
Silicom PEG4-RoHS Quad Port Gigabit PCI-Express NIC
Avocent AutoView 1400 Single User 8-Port KVM Switch
Digital Link DL5400 MultiLink Access Device
Media Form CD-3702 CD Duplicator
Gadzoox Gibraltar-GSS 12-Port GBIC Fibre Channel Hub
Lambda UEZ1AEFGY Ultraflex 1500-Watt Power Supply
MCK EXTender 1000 1-Port Remote Module E-1000U-RNM
3DConnexion CadMan 3D Motion Controller for Designers
Tyan Thunder K8QSD Pro S4882-D Server Motherboard
New! Kniel 4022.436.72642 CP 5.70/VME Power Supply
New! Kniel 4022.436.74321 CP 3,3.20 Power Supply
Comtech EF Data SMS-301 Modem Protection Switch
New! Kniel 4022.4360.14741 CP 15.3,5 V2 Power Supply
New! Kniel 4022.436.86131 CP 12.5 V2 Power Supply
New! Kniel 4022.436.86882 CPD 8.1,5/1 V3 Power Supply
Sony SVT-RA168 232 Hour Time Lapse Recorder
Cisco Systems ASA 5505 V05 Adaptive Security Appliance
QSC FE 3/1 Audio Transport Hub 3 Twisted & 1 Fiber Port
Centent CNO162 High-Resolution Microstep Motor Driver
TEWS Tech. TIP700 IndustryPack Digital Output Module
Neural ID CURE Controller Unit
D-Link DES-3350SR Multilayer 48-Port 10/100 Switch
Melles Griot 05-STP-901 HeNe Laser System Power Supply
HP Agilent E1849A VME Card
Dell PE 1950 Dual QC Xeon 1.6 GHz 4 GB RAM Perc 5i SAS
RF Generator Assembly AE-0000-56-8 20787
Digi EtherLite 32 50000988-01 32-Port Terminal Server
Varian DDS Channel Module II
Terayon DigiCipher II Multi-Channel IRD CP 7220
NEW! Lot of 4 Lucent 6424D+M Multi-Line Digital Phones
Innovations Inc Sim Check Advanced Memory Module Tester
Hewlett Packard HP E1135C Power Distribution Unit
Precision Filters Inc. PS1-1 Power Supply
Simplex 50/125 FIS SC/PC-SC/PC FIS Cable 800M N1YYM800
VegaStream Vega 50 6x4 IP Telephony Gateway
HP Hewlett-Packard 5340A Frequency Counter
Siemens APOGEE Terminal Vent Unit Controller 540-509
Cisco VPN Software Feature Pack VPN-SW-3DES-UR
Norstar Flash 2 Upgraded 4 Channel Voicemail System
HP DL380 G4 Dual Xeon 3.0 GHz 2U Server
Aydin Monitor Systems PSK Demodulator 321B
TAS Gemini Warp Dual Terminal Emulator
Hewlett Packard 5371A Frequency Time Interval Analyzer
New! Wyse WinTerm 5440XL 902034-20 with Keys & Mouse
Coyote Point Access Eqalizer E250i Load Balancer
Bally Computer System Astrovision Astrocade ABA-1000-2
Adtran Atlas 550 Chassis T1 ISDN BRI U 1200305L1
Pelco PelcoNet NET300T IP Network Video Transmission
Lot of 2 Opnext TRS2200SM-0001-?W SFP+8xFC SW GBIC's
Power Mac G5 Dual Core 2.0GHz 1GB 160GB HDD M9590LL/A
Cyb SecureFX Fax Security
Emulation Technology EIAJ CLIP-160-QF07-B?-L
Emulation Technology EIAJ CLIP-208-QFZ21-?C-L
Simplex 50/125 FIS SC/PC-SC/PC FIS Cable 500M N1YYM500
Cisco AIR-LAP1242AG-A?-K9 Wireless Aironet Access Point
Agilent Technologies E2790-61601 GPIO Cables
Lot of 6 Arescom CDS-3020 12-Port HomePNA Switching Hub
Tektronix CT5 High Current Transber
National Instruments NI SCXI-1000 and NI SCXI-1102
Dell PowerVault 220S Server Storage Rack Mount
Granville-Phill?ips 275 Convectron Digital Gauge
HP ProCurve Switch J4118A 10Base-FL Module
Dell Server Powervault 220S Storage Rack Mount
Inb Server System SR1529ML SR1529MLNA Kit
Pinnacle Pro Digital Breakout Box for T3000 136730001
Avocent Switchview IP1020 Remote Access Device SVIP1020
HP C8085A LaserJet 9000 3000-Sheet Stacker/Stapler
Allied Amphenol Products 356-265 Deca-Pierce Terminator
New! HP J4839A ProCurve Switch GL/VL/XL Power Supply
Dell PE 2850 Dual Xeon 3.6GHz 6GB RAM 4x73GB HDDs
HP Proliant BL25p Dual AMD Opteron Server w/ 4GB RAM
Xyratex GbE-X GbE-XL1-4 PCI 133 Network Card
3M MP7730 DLP Projector
Plus UP-1100 Data Projector
Hewlett Packard HP 44709A 20 Channel FET Multiplexer
Cisco Linksys 16-Port Switch SRW2016 W/ WebView
Network Associates NAI-408-0281-10?0 Snifferbook Kit
