三、體系特色
全廠易于辦理和保護(hù)；
供給全部的網(wǎng)絡(luò)支撐功用，能夠使體系操作變得更輕松；
充沛滿意用戶將來(lái)擴(kuò)容、進(jìn)行特定開發(fā)、接入第三方設(shè)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(lái)的擴(kuò)容需要，然后極好地保護(hù)了用戶的出資

導(dǎo)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(gè)范疇。作為通用工業(yè)操控計(jì)算機(jī)的plc，不論是在功用上仍是在運(yùn)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(yùn)動(dòng)操控、進(jìn)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(shè)備。
    而跟著PLC運(yùn)用的迅猛開展，各種高檔操控戰(zhàn)略不得不面對(duì)不一樣的目標(biāo)在大跨距渙散地址下的長(zhǎng)途操控運(yùn)用，怎么完結(jié)大規(guī)模散布式運(yùn)用中各種現(xiàn)場(chǎng)數(shù)據(jù)傳輸處理及長(zhǎng)途操控,長(zhǎng)途保護(hù)等即是很實(shí)踐的疑問(wèn)，這其間的前提之一即是各種數(shù)據(jù)包的長(zhǎng)途傳輸.
    曾經(jīng),有的PLC運(yùn)用體系中選用了無(wú)線數(shù)傳電臺(tái)通訊來(lái)到達(dá)長(zhǎng)途操控PLC的意圖,可是這種計(jì)劃依然存在一些缺點(diǎn),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(yùn)用趨勢(shì)是將PLC操控體系與現(xiàn)有GPRS無(wú)線通訊網(wǎng)絡(luò)技能集成，經(jīng)過(guò)GPRS網(wǎng)絡(luò)通訊技能，能夠完結(jié)全國(guó),乃至全球規(guī)模內(nèi)的數(shù)據(jù)超長(zhǎng)途牢靠傳輸，進(jìn)而到達(dá)數(shù)據(jù)長(zhǎng)途剖析處理，長(zhǎng)途操控的意圖。
GPRS+PLC計(jì)劃長(zhǎng)處
    中國(guó)移動(dòng)GPRS體系可供給廣域的無(wú)線IP銜接。在移動(dòng)通訊公司的GPRS事務(wù)渠道上構(gòu)建散布式PLC操控體系，完結(jié)PLC的無(wú)線數(shù)據(jù)傳輸具有可充沛運(yùn)用現(xiàn)有網(wǎng)絡(luò)，縮短建造周期，下降建造本錢的長(zhǎng)處，而且設(shè)備裝置便利、保護(hù)簡(jiǎn)略。經(jīng)過(guò)對(duì)比剖析，咱們挑選中國(guó)移動(dòng)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

Enlarge
Precision Optical Mirror Mount MM26

Enlarge
Davidson Adjustable Reference Mirror D615 #141

Enlarge
Daedal 8" Travel Single Axis Stage

Taylor Hobson Mount

10" Precision Optical Mirror Mount MM24

Enlarge
Aerotech Precision Optical Mirror Mount MM30

Enlarge
Precision Optical Mirror Mount MM29

Enlarge
Precision Optical Mirror Mount MM25

Enlarge
Olympus BH2-MDO Multi-Viewing Attachment

Farrand Optical Scan Prism

American Optical Stereo Star Zoom on Boom Stand

Enlarge
Barnes Engineering Infrared Radiometric Microscope

IR Germanium Dual Magnification Lens

Enlarge
Precision Optical Mirror Mount MM3

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

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

Enlarge
Agilent/Hewlett Single Beam Interferometer

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

Enlarge
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

Enlarge
Heidenhain 840mm Sealed Linear Encoder NOS

Olympus SZ4045 Stereozoom Microscope

Enlarge
Farrand Optical Square 88183

7 Miscellaneous Microscopes

Enlarge
6" Daedal Precision Optical Mirror Mount MM42

Enlarge
Precision Optical Mirror/Lens Mount MM09

Enlarge
Carl Zeiss S-Planar Lens 1.3/80

Enlarge
Zeiss Binocular Medical Microscope

Enlarge
Aerotech Single Axis Servo Driven Stage

Vision Engineering Dynascopes *Lot of 5*

Enlarge
Brass and Wood Statimeter 1942 *Group of 4*

Enlarge
PI Ultra High Prescision Side Drive Stage w/Motor Drive

Dual Voltage Spindles *Lot of 4*

Precision Optical Mirror/Lens Mount MM10

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

Schwartz Electro Optics Erbium Laser Head

Enlarge
Lasico Digital Filar Eyepiece with Calibration Standard

Enlarge
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