三、體系特色
全廠易于辦理和保護；
供給全部的網(wǎng)絡支撐功用，能夠使體系操作變得更輕松；
充沛滿意用戶將來擴容、進行特定開發(fā)、接入第三方設備的需要；
體系上層選用以太網(wǎng)，為用戶供給了杰出的開放性構(gòu)造，能夠輕松滿意用戶將來的擴容需要，然后極好地保護了用戶的出資

導言
    現(xiàn)在，數(shù)字化技能獲得日新月異的開展，而且日益滲透到各個范疇。作為通用工業(yè)操控計算機的plc，不論是在功用上仍是在運用范疇方面，都有著從邏輯操控到數(shù)字操控、單體操控到運動操控、進程操控到集散操控的飛躍，今日的可編程序操控器PLC正變成工業(yè)操控范疇的干流操控設備。
    而跟著PLC運用的迅猛開展，各種高檔操控戰(zhàn)略不得不面對不一樣的目標在大跨距渙散地址下的長途操控運用，怎么完結(jié)大規(guī)模散布式運用中各種現(xiàn)場數(shù)據(jù)傳輸處理及長途操控,長途保護等即是很實踐的疑問，這其間的前提之一即是各種數(shù)據(jù)包的長途傳輸.
    曾經(jīng),有的PLC運用體系中選用了無線數(shù)傳電臺通訊來到達長途操控PLC的意圖,可是這種計劃依然存在一些缺點,首要即是其散布規(guī)模依然較為有限,而且跟著通訊間隔的添加,其牢靠性遭到很大影響。 現(xiàn)在最新運用趨勢是將PLC操控體系與現(xiàn)有GPRS無線通訊網(wǎng)絡技能集成，經(jīng)過GPRS網(wǎng)絡通訊技能，能夠完結(jié)全國,乃至全球規(guī)模內(nèi)的數(shù)據(jù)超長途牢靠傳輸，進而到達數(shù)據(jù)長途剖析處理，長途操控的意圖。
GPRS+PLC計劃長處
    中國移動GPRS體系可供給廣域的無線IP銜接。在移動通訊公司的GPRS事務渠道上構(gòu)建散布式PLC操控體系，完結(jié)PLC的無線數(shù)據(jù)傳輸具有可充沛運用現(xiàn)有網(wǎng)絡，縮短建造周期，下降建造本錢的長處，而且設備裝置便利、保護簡略。經(jīng)過對比剖析，咱們挑選中國移動的GPRS體系作為散布式PLC操控體系的數(shù)據(jù)通訊渠道。

Hughes Large Diameter Infrared Light Weight Lens

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Precision Optical Mirror Mount MM26

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Davidson Adjustable Reference Mirror D615 #141

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Daedal 8" Travel Single Axis Stage

Taylor Hobson Mount

10" Precision Optical Mirror Mount MM24

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Aerotech Precision Optical Mirror Mount MM30

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Precision Optical Mirror Mount MM29

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Precision Optical Mirror Mount MM25

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Olympus BH2-MDO Multi-Viewing Attachment

Farrand Optical Scan Prism

American Optical Stereo Star Zoom on Boom Stand

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Barnes Engineering Infrared Radiometric Microscope

IR Germanium Dual Magnification Lens

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Precision Optical Mirror Mount MM3

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J. Unertl 6 1/4" Precision Mirror Mount MM50

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Nicolet FT-IR Spectrometer Model 510 *As-Is*

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Agilent/Hewlett Single Beam Interferometer

J. Unertl 5 3/4" Precision Mirror Mount MM49

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Farrand Optical Square 88305

Taylor Hobson Levelling Stand

Taylor Hobson Optical Square

Taylor Hobson Adjustable Mirror Reflector

Taylor Hobson Dual Optical Micrometer

Taylor Hobson Variable Focus Collimator

Davidson Adjustable Stand - Elevation and Azimuth

Leica/American Optical Trinocular Teaching Microscope

Taylor Hobson Alignment Telescope Lot *Parts or Repair*

6" Precision Optical Mirror Mount

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Heidenhain 840mm Sealed Linear Encoder NOS

Olympus SZ4045 Stereozoom Microscope

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Farrand Optical Square 88183

7 Miscellaneous Microscopes

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6" Daedal Precision Optical Mirror Mount MM42

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Precision Optical Mirror/Lens Mount MM09

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Carl Zeiss S-Planar Lens 1.3/80

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Zeiss Binocular Medical Microscope

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Aerotech Single Axis Servo Driven Stage

Vision Engineering Dynascopes *Lot of 5*

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Brass and Wood Statimeter 1942 *Group of 4*

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PI Ultra High Prescision Side Drive Stage w/Motor Drive

Dual Voltage Spindles *Lot of 4*

Precision Optical Mirror/Lens Mount MM10

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Talandic Research X-Y-Z Stage with 2 x 2 x 4" Travel

Schwartz Electro Optics Erbium Laser Head

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Lasico Digital Filar Eyepiece with Calibration Standard

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Adtran 4200917L1 NetVanta 5305 Subrate T3 Bundle NEWOEM

APC SYMMETRA SY16K UPS SYSTEM SY16kVA Refurbished

Telect 010-8332-0410 DS3 Chassis Loaded NEW

ENTERASYS XSR-3150 350 Mbps Security Router NEW

Adtran 4200992L1 NetVanta 5305 w/ T3 Wide Module NEWOEM

120x LC/ LC Multimode Duplex Fiber Jumper 30M Free Ship

Adtran 4200990L2 NetVanta 5305 Chassis w/ EFP NEWOEM

120x LC/SC Multimode Duplex Fiber Jumpers 30M Free Ship

Adtran 4200990L1 NetVanta 5305 Chassis NEWOEM

120x LC/ LC Multimode Duplex Fiber Jumper 20M Free Ship

120x LC/SC Singlemode Duplex Fiber Jumper 30M Free Ship

120x SC/SC Multimode Duplex Fiber Jumpers 30M Free Ship

Adtran 4200995L1 NetVanta 5305 DC Chassis NEWOEM

120x LC/SC Multimode Duplex Fiber Jumpers 20M Free Ship

120x SC/SC Singlemode Duplex Fiber Jumpers 30M FreeShip

Lucent 11120 CBX DS3 FR TOP 1024 PR