產(chǎn)品詳情
2.現(xiàn)場總線的選擇
2.1現(xiàn)場總線技術(shù)的選擇
現(xiàn)場總線集控制技術(shù)、計(jì)算機(jī)技術(shù)、通信技術(shù)于一體，是當(dāng)今自動(dòng)化領(lǐng)域技術(shù)發(fā)展的熱點(diǎn)之一。這項(xiàng)技術(shù)可將多個(gè)智能控制儀表連接成網(wǎng)絡(luò)系統(tǒng)，實(shí)現(xiàn)分布式計(jì)算機(jī)控制，提高檢測和控制精度，改善系統(tǒng)的動(dòng)態(tài)響應(yīng)速度，提高系統(tǒng)安全性，從而得到了廣泛的應(yīng)用。
近年來，幾種有影響的現(xiàn)場總線技術(shù)已在一些特定的應(yīng)用領(lǐng)域里顯示出各自的優(yōu)勢。在此，我們選定了現(xiàn)為德國和歐洲標(biāo)準(zhǔn)的PROFIBUS（Process Fieldbus）現(xiàn)場總線。一方面由于它是目前數(shù)據(jù)傳輸率快的一種現(xiàn)場總線，傳輸率高可達(dá)12Mbps，另一方面它能夠很好的與西門子的傳動(dòng)設(shè)備相配合，并與西門子PLC（Programmable Logic Controller）結(jié)合緊密且組態(tài)簡便。
2.2 PROFIBUS現(xiàn)場總線簡介
參照ISO/OSI參考模型,PROFIBUS現(xiàn)場總線只包含物理層、數(shù)據(jù)鏈路層和應(yīng)用層。由PROFIBUS-DP，PROFIBUS-FMS， PROFIBUS-PA組成PROFIBUS系列。
PROFIBUS-DP：經(jīng)過優(yōu)化的高速、廉價(jià)的通信連接，專為自動(dòng)控制系統(tǒng)和設(shè)備級(jí)分散I/O之間通信設(shè)計(jì)，使用PROFIBUS-DP模塊可取代價(jià)格昂貴的24V或0～20mA并行信號(hào)線。用于分布式控制系統(tǒng)的高速數(shù)據(jù)傳輸。
PROFIBUS-FMS ：解決車間級(jí)通用性通信任務(wù)，提供大量的通信服務(wù)，完成中等傳輸速度的循環(huán)和非循環(huán)通信任務(wù)，用于紡織工業(yè)、樓宇自動(dòng)化、電氣傳動(dòng)、傳感器和執(zhí)行器、可編程序控制器、低壓開關(guān)設(shè)備等一般自動(dòng)化控制。
PROFIBUS-PA專為過程自動(dòng)化設(shè)計(jì)，標(biāo)準(zhǔn)的本質(zhì)安全的傳輸技術(shù)，實(shí)現(xiàn)了IEC1158-2中規(guī)定的通信規(guī)程，用于對(duì)安全性要求高的場合及由總線供電的站點(diǎn)。
本設(shè)計(jì)中采用的是PROFIBUS-DP標(biāo)準(zhǔn)，PROFIBUS-DP（或DP標(biāo)準(zhǔn)）是由歐洲標(biāo)準(zhǔn)EN50170定義的一種遠(yuǎn)程I/O通信協(xié)議。DP表示分布式外圍設(shè)備，亦即遠(yuǎn)程I/O。PROFIBUS-DP還用到了應(yīng)用層接口（ALI），ALI將過程對(duì)象轉(zhuǎn)換為通信對(duì)象。
3M-Matic 700r Random Case Sealer, 15 boxes per min!
83420A K23 Amp Pair Source Test Set
83420A K25 Branching Unit Source #1 Test Set
83420A K26 Branching Unit Receiver Test Set
83420A K29 Branching Source #2 Test Set
Adtech 400120C VXI Mainframe (Reduced!)
Adtech SX/14 Data Link Simulator Mainframe (Reduced!)
Advanced Energy MDX Magnetron Drive 2172
Agilent 35670A opts AY2/1D0/1D1/1D2?/1D3/1D4/1C2
Agilent 53310A Modulation Domain Analyzer w/ opt's
Agilent 70420A Phase Noise Test Set w/ opt 001
Agilent 8509B Lightwave Polarization Analyzer
Agilent E1437A VXI Digitizer Module
Agilent E1439A VXI Digitizer Mod. (Reduced!)
Agilent E1441A opt 001 Arbitrary Waveb Generator
Agilent N1610B Service Advisor Portable Test Tablet
Agilent N4483A
Alloyd 2SC1016 Dual Shuttle Sealer, 10 x 16!
Alzbll AB3R Drilling Machine
Amtech Ultraweld 20 Precision Ultrasonic Welder
Anritsu MD1620B Signaling Tester w/ opt 01 / 11
Anritsu MG3670B Modulation Signal Generator w/ opt's
Anritsu MG3670B Modulation Signal Generator w/ opt's
Applied Systems Eng.167KU 300 Watt TWT (Reduced!)
Aremco 2928-B Heat Furnace 2 (Reduced!)
Azco FG160 SUR-PAK Precision Cutting Machine
Barnstead / Labline 3628A-1 Lab Oven
Barnstead Fistreem II / A74415-60 Distiller (Reduced!)
Beckman L5B-CT Ultracentrifuge with Rotor (Reduced)
Biddle 247000-7 Digital Low Resistance Ohmmeter
Biddle 247000-8 Digital Low Resistance Ohmmeter
Biddle 247800 Digital Microhmmeter
Bio Rad UMA-500 Spectroscopic Microscope, 15x & 4x
Bio-Rad FTS 45 FT-IR Spectrometer w/UMA 300A FTIR
Blue M 1004-8C-MP3 Environmental Test Chamber
Blue M DC-206C Convection Oven
Blue M IGF-7780F Environmental Oven 1100°F
Blue M Lindberg WSP-109C-MP3 Shock Chamber (Reduced!)
Blue M POM7-206C-2X Convection Oven
Blue M WSP-109B-3 Shock Chamber Oven
Boonton 4300 RF Power Meter
Bruel & Kjaer 4602B w/ 4185 & Accessories (Reduced)
Budzar BTU Multi-Zone Electrically HeatedTemp. Unit
Caliper Life Science Tekmar Autotrace SPE Workstation
Carver 3947Auto Pak (Reduced!)
Chase Machine & Engineering Oven Module
Cheminstruments AR-1500 Adhesion Release Tester
Clausing Colchester 11 Lathe w/ Accessories
Clinton STB-10G DC Spark Tester
Coherent Innova 90-6 with LaserPure 20N & Power Supply
Complete Kit
Coulter Delsa 440 Particle Counter w/ Power Supply
Cumberland 284 Pelletizer, Granulator
CyberOptics MicroScan Laser Measure System
CyberOptics MicroScan Laser Measure Unit
Danly 5 Ton, Four Post Air Press (Reduced!)
Datatape TMA3000 Tape Motion Analyzer
Delta Design 9059 Environmental Test Chamber, 2-3-1
Despatch LBB2-12-1 Forced Convection Oven
Despatch LFD2-24-3 Forced Air Oven
Despatch LND1-42-2 600°F Inert Atmosphere Oven
DLS Test Works DLS400 ADSL Wireline Simulator
DRANETZ PP1-P
DRANETZ PP1-R
Dukane 410 Series Ultrasonic Wedling System
Dukane 410 Series Ultrasonic Wedling System
Dukane Lot of Qty 2 43A240 & Qty 1 Ultra 351 Auto-Trac
DynaMyte 4000 Milling Machine
Each Brand New Cell Phone is Complete with Accessories
Edwards High Vacuum Pump (Reduced)
Electroglas EG5 / 300 ARGOS Wafer Prober (Reduced!)
EMCO 5101 Dual TEM Cell (Reduced!)
EMI TCR100T50 DC Power Supply (Reduced)
Empire Pro-Finish FS-2636 3 Piece System!
ENI ACG-3 RF Power Generator
ENI EGR9600B Power Generator 9,000 Watts (Reduced)
ENI POWER SYSTEMS OEM-25 RF Generator
ESI 231C
ETS Lindgren T/T RF Enclosure w/ Anechoic Absorber
EXFO FTB-300 w/opt's D2/M1/W1/N4 (Reduced!)
Extek 3100 Silver Film Duplicator w/ Manual/Accessor?ies
Fargo HDP720 High-Definition Card Printer
Fisher Scientific Isotemp Plus Freezer 13-986-146RA
Forma Scientific 3908 Reach-In Incubator
GCI DE1AC Air Conensing Chiller
Giga-tronics 6082A opt 130 Synth Sig Gen (Reduced!)
GL Communication Inc. 9121TB1G8CE
GLSI Hg253 Portable Vapor Mercury Analyzer
Gorman Bobbineer Wire Winding Machine
Graco Air Powered Pump with Drum
Graphtec DMS1000 Data Management System
GSI ScanArray 3000 Microarray Scanner
Hankison HPRP0.75CU Compressed Air Dryer
Hardinge DV-59 / DSM-59 Industrial Lathe
Heller 1148 IRC Reflow Convection Oven
HP / Agilent 81110A (Reduced!)
HP / Agilent 81685A Amplifier Test Set (Reduced!)
HP 11729C Carrier Noise Test Set, 10MHz to 18GHz
HP 16190A Perbance Test Kit, Complete
HP 16453A Dielectric Material Test Fixture
HP 16454A Magnetic Material Test Fixture, Complete
HP 3326A 2-Channel Synthesizer w/ opt's 002 & 003
HP 35660A-001 Dynamic Signal Analyzer (Reduced!)
HP 35665A
HP 35665A opts 1C1/1C2/1D0/1D2?/ANA
HP 3585A Spectrum Analyzer, 20 Hz - 40 MHz (Reduced!)
HP 4352B VCO / PLL Signal Analyzer (Reduced!)
HP 4380A 500 MHz S-Parameter Test Set (Reduced!)
HP 5183T Precision Digitizing Oscilloscope
HP 5350B Microwave Frequency Counter
HP 54007A Infinium Accy kit (Reduced!)
HP 54620C Logic Analyzer
HP 54825A Infinium Oscilloscope, 500MHz, 2GSa/s
HP 6674A opt J06 (70V -30A) DC Power Supply (Reduced!)
HP 70621A 2.9 GHz Preamplifier Module (Reduced!)
HP 70841B PatternGenerato?r 100 Mb/s to 3Gb/s (Reduced!)
HP 70842B Error Detector Module (Reduced!)
HP 70842B Error Detector Module w/ Opt H50 (Reduced!)
HP 8146A opt 003 (Reduced)
HP 83420A opts 014 / 210 (Reduced!)
HP 85027C Directional Bridge 10 MHz to 18 GHz
HP 8510C opt 010 50 GHz Network Analyzer (Reduced!)
HP 8514B S-Parameter Test Set
HP 8515A S-Parameter Test Set
HP 8590D Opt. 001 Spectrum Analyzer 1.8GHz (Reduced)
HP 8590D Opt. 003 Spectrum Analyzer 1.8 GHz (Reduced)
HP 8643A Signal Generator Opt. H02
HP 8757A Scalar Network Analyzer (Reduced!)
HP 89441A Vector Signal Analyzer AYA / AYB / AY9 / UFG
HP 8981A Vector Modulation Analyzer (Reduced!)
HP 8981B Vector Modulation Analyzer
HP A2638B Industrial Computer Workstation 9000
HP Agilent 3563A Control Systems Analyzer, 100 kHz
HP Agilent 35670A Dynamic Signal Analyzer w/ opt's
HP Agilent 35689B S-Parameter Test Set, 150 MHz
HP Agilent 3709B Consblation Analyzer
HP Agilent 4193A Vector Impedance Meter, 110MHz
HP Agilent 4274A LCR Meter w/ opt 001
HP Agilent 5183U Precision Digitizing Oscilloscope
HP Agilent 53310A Communication Analyzer
HP Agilent 5361A CW Microwave Counter, 10Hz to 20 GHz
HP Agilent 5373A Domain Pulse Analyzer (Reduced!)
HP Agilent 6674A-J05 Programmable Power Supply
HP Agilent 83540B Sweep Generator, 2-8.4 GHz (Reduced!)
HP Agilent 83592C Sweeper Plug-In (Reduced!)
HP Agilent 83621A Synthesized Signal Generator
HP Agilent 8510B Network Analyzer Set, with Cable!
HP Agilent 8590A Spectrum Analyzaer, 10kHz to 1.5GHz
HP Agilent 8590B 1.8 GHz Spectrum Analyzer w/ opt 021
HP Agilent 8591E Portable Spectrum Analyzer w/ opt 105
HP Agilent 8665A Signal Generator 100KHz - 4.2GHz
HP Agilent 8760A K72 Perbance Test Matrix (Reduced)
HP Agilent 8922M GSM Mobile Station Test Set w/ Opt's
HP Agilent 8991A Peak Power Analyzer w/ opt 003
HP Agilent E1413C High-Speed 64-Channel Converter
HP Agilent E4431B Digital RF Signal Generator (Reduced)
HP Agilent WireScope 350 Cable Certifier (Reduced!)
HP C6075A DesignJet 1055CM 36 Plotter
HP E1431A VXI Digitizer Module 8-Ch
HP E4433B opt's 1E5/UND/UN4/UN5?/UN7
HP/Agilent 5508A Laser Measurement Display
HP/Agilent 70909A 26.5 GHzRF Section Module (Reduced!)
HP/Agilent 85046A S-Parameter Test Set (Reduced!)
HP/Agilent 85062A 3.5-mm E-Cal Module w/ opt's 001/00F
HP/Agilent 8566A Spectrum Analyzer System (Reduced!)
HP/Agilent 89410A opt's AYA,AYB,AY9,UFG (Reduced!)
HP/Agilent 89411A Network Analyzer Downconverter
HP/Agilent 89431A Vector Signal Analyzer
HP/Agilent E9850A VXI Embedded PC Controller
Ideal 3915-95 Guilotine, New, with Accessories
Includes Manual, Software & Ammonia Cabinet
Instrument Systems RPA2000 (Reduced!)
Integrated Air Systems LV4-30 Laminar Flow Hood
IRD 350 Vibration Analyzer (Reduced!)
Ithaco 1201 Low Noise Preamplifier
Jouan CR 412 Refrigerated Centrifuge
K&E Vectron Transit Theodolite
Kaye Instruments HTR150 Temperature Reference(Reduc?ed!)
Keithley 237 High Voltage Source-Measure Unit (Reduced)
Kester KWB-1000 Automated Wetting Balance Tester
Knight Tool Co. KTC-FT-54 Press
Knight Tool Co. KTC-FT-62 Press
Koolant Koolers KV2000 Industrial Chiller
Koolant Koolers, Inc. KV1500 Chiller (Reduced!)
Labline 4628 Obrital Shaker
Lambda EMI ESS 500-6 DC Power Supply
Laser Precision Corp Optical Time Domain Reflectometer
LeCroy 9304AM Digital Oscilloscope w/ Options
LeCroy 9350AM Digital Oscilloscope w/ Options
LeCroy DDA-120 1.0 GHz, 4 Channel 8GS/sec Oscilloscope
LeCroy LC574A Digital Oscilloscope w/ Options
Leica Wild 355110 Dual Head Microscope
Lindgren ETS Series 81 RF Shielded Room 9' x 7' x 8'
LMI SE2050 Laser Engraver (Reduced!)
LMT Model LD-390 Component Lead Trim
Lot of 10 Katadyn Survivor 35 Reverse Osmosis, New
Lydall Affinity CBD-007S-BB09C-?BD3 Chiller
Lydall Affinity RAA-002H-BB06C-?BD3 Chiller
Lydall Affinity RAA-002H-BB06C-?CBC3 Chiller
Lydall Affinity RAA-002H-BB06C-?CBS Chiller
Maag Flockmaschinen SPG 1000 Rise Time Tester
Mahr Federal 832F Digital Electronic Amplifier
Marconi 2022D Signal Generator, 10kHz-1GHz.
Marconi 2305
Mattson Polaris IR-10410 FTIR Spectrometer (Reduced!)
Mech-El Industries 709 Manual Eutectic Die Attacher
MetOne A2408-1-115-1 Portable Laser Particle Counter
Metrum MET64SCUA 8000 Speed (Reduced!)
Metrum MET64SCUAO 4000 Speed (Reduced!)
Metrum VLDSB Data tape Recorder (Reduced!)
Micro Robotics Systems Inc Model 170G (Reduced!)
Microautomation M-150 Mounting Station
Micro-Quad 8000 Infrared Analyzer w/ 2 Sensors
Microtrac FRA 9250 Particle Size Analyzer
Millipore Waters Quanta 4000E (Reduced)
Miteq DN-8011 Sablite Test Loop Translater
Mitsubishi CA-06 Moisture Meter
Mitutoyo PH-350A Optical Comparator
Mobicom Accetio 2189 Lot of 1000, All New (Reduced)
Molecular Devices Cytosensor Microphysiomete?r
MPM SP-1500 Semi-Automatic Screen Printer
Mystaire 2450 Ductless Fume Enclosure
Narda 8011B RF Transparent Temperature Monitor
NBSC InnOva 2100 Platb Shaker w/ User Manual
NHI NHI-2040MW-10L Solid State Amplifier
Nicolet Model 730 FTIR Spectrometer with AEM Module
Nikon Linear Measurescope 20 LS-403 Stage
Nikon Measurescope 20 LS-402 Stage
Nikon SMZ800 Stereomicroscop?e w/ SDC-240 Digital Camera
Noise/Com Model UFX-BER 892/1850 Precision CN Generator
NoiseCom 7107 Noise Generator (Reduced!)
NoiseCom UFX 7907 Prog. Noise Generator (Reduced!)
Noisecom UFX-BER 892 / 1850 Precision C/N Generator
Noisecom UFX-BER-30/65/1?45 (Reduced!)
NoiseCom UFX-BER-375/625 C/N Generator (Reduced!)
OCE G6035-S Scanner
Olympus SZ6045 Stereo Imaging Microscope System
Ono Sokki CL-250 Non-Contact Thickness Meter (Reduced!)
Optical Associates INC 316 UV Power Meter with Probe
Orec Model 03DM-100 Ozone Monitor
Perkin Elmer ABI Prism 7700 Sequence Detector
Perkin Elmer Arnel Autosampler
Perkin Elmer Autosystem Gas Chromatograph
Perkin Elmer LC-100 Column Oven
Perkin Elmer Series 410 Liquid Chromatograph Pump
Perkin Elmer Sigma 10 Chromatography Data Station
Precision Scientific Model 29 Vacuum Oven
Quadtech 1870 AC DC Dielectric Analyzer
Quadtech 1880 (Reduced!)
QuadTech Guardian 12kV DC Hipot Tester w/ Accessories
Rapid-Air R34F Stock Reel
Rheometrics RSA 2 Solids Dynamic Mechanical Analyzer
Rohde & Schwarz CMD55 Com Test Set w/ opt's and manuals
Rohde & Schwarz FSEB20 Spectrum Analyzer
Rohde & Schwarz UPL16 Audio Analyzer (Reduced)
Rohde & Schwarz UPL16 w/ Options & Accessories
Ruska DDR 6000
Sahara S1 FC5 Drum Heater Oven
Schaffner NSG 431 Electrostatic Discharge System
Sencore SC3100 Oscilloscope (Reduced!)
SES TK/20S Temperature Chamber
Seven Associates B-1A Induction Heating Unit
Solartron 1254 Frequency Response Analyzer (Reduced!)
Solartron/Schlu?mberger 1253 Gain Phase Analyzer.
Solitec Edwards High Vacuum Pump System
Sony VPH-1292Q Multiscan Projector (Reduced)
Sony VPH-G70 CRT Projector (Reduced)
Sorensen DHP50-60 DC Digital Power Supply
Spencer Industravac SA607A Air Clean System (Reduced!)
Spirent Abacus1 Call Simulator System w/opt's (Reduced)
Spirent TAS 4500C RF Channel Emulator
SSEC Evergreen M10 Wafer & Mask Cleaner
Standard Environmental Systems Temperature Chamber
Stanford Research SR645
Sunol Sciences Corporation SC98V
Systron Donner 6530 Microwave Frequency Counter
TA Instruments TMA2940 Thermomechanica?l Analyzer
TDI RBL-488-400-120?-800 DC Electronic Load
Tektronix 1740 Waveb / Vector Monitor (Reduced!)
Tektronix A6909 Two Channel Isolator
Tektronix AGL1 Analog Generator Lock Option Module
Tektronix AVG1 Multibat Analog Test Signal Generator
Tektronix CTS 710 Sonet Test Set w/Opt 003 (Reduced!)
Tektronix CTS 710 w/ Opts 004 / 022 (Reduced!)
Tektronix DL-11 Delay Line (Reduced!)
Tektronix DTG5274 Data Time Generator w/ Modules
Tektronix GB1400 Analyzer/Genera?tor Test Set (Reduced)
Tektronix GB1400 GigaBert Analyzer w/ Opt's 08 & 09
Tektronix PB200 Packet / Cell BERT Tester (Reduced!)
Tektronix PQA300 Picture Quality Analysis System
Tektronix TDS520B 500 MHz Oscilloscope (Reduced!)
Tektronix TDS540 Digitizing Oscilloscope
Tektronix TLA7L3 Logic Analyzer Module w/ opt's 1S & 2S
Tektronix VM700 Video Test Set w/ opt's 01 (Reduced!)
Tektronix VM700A Automatic Video Measurement Set w/ opt
Tektronix VM700A opt;s 01 / 30 / 40 (Reduced!)
Tektronix VM700A opt's 01/ 40 (Reduced!)
Tektronix VX4101A w/opt's 1A/1D (Reduced!)
Teledyne Taber V-5 150-B Electric Stiffness Tester
Telsonic USP3000 Ultrasonic Welding System
Tenney / Lunaire T-Series Environmental Chamber
Tensile Testers, Inc JDH Tensile Strength Tester
Thermotron S-32C Environmental Chamber
Toddco General Inc CH200 (Reduced!)
Transistor Devices DLVP130-250-250?0 DC Electronic Load
TTC / Acterna T-Berd 224 PCM Analyzer (Reduced!)
TTC 43440 DS1 / DS3 ATM Interface Adapter, New in Box!
Ultratech 602 Wafer & Mask Cleaner
Unadyn UDC-55 Mini Dryer with 300 Modular Hopper
Union Special 35800 DR Felling Machine
Uson Testra 1100 Gauge Decay Tester
Valhalla 2301 Power Analyzer, 2 Available!
Vestil 4853 / Scale Hydrolic Scissor Lift
Vestil EHLTX-4855-1-39 Hydrolic Scissor Lift
Vickers Hydraulic Power Unit, 10 Gal Per Minute
Vickers Hydraulic Power Unit, 5 Gal Per Minute
Vision Engineering Cobra Stereo Zoom Microscope
Vision Engineering Model TS-3 Dynascope
Wandel & Goltermann OSA-155 DWDM System Analyzer
Wandel & Goltermann RME-5 / RMS-5 System (Reduced!)
Wandel & Goltermann RS-100 White Noise Generator
Watson KRPS2-CB-1 Single Position Payoff
Watson PS2-CB-1 Single Position Payoff
Watson PS2-CB-2 Dual Position Payoff
WaveTek 1395 Arbitrary Waveb Synthesizer
Wavetek 195 Waveb Generator w/opt 01, 02 (Reduced!)
Wavetek 4600 Autocal Amp (Reduced !)
Wavetek 4808 Multifunction Calibrator
Wayne Kerr PSG 2400L Sweep Signal Generator, 2.4GHz
Weinschel 8310 Series 6268 SmartStep? Attenuator Unit
Wiltron 6647A Programmable Sweep Generator w/ opt 03
Wiltron 6647A Programmable Sweep Generator w/opts 03/14
Wiltron 6709B-40 Signal Generator, 2 GHz
Yokogawa 2503-23 Digital AC Power Meter
Zero Products BNP65-600R&DC Media Blaster w/ Filter
