描述
輸入/輸出模塊是可編程控制器PLC與工業(yè)生產(chǎn)設備或工業(yè)生產(chǎn)過程連接的借口?，F(xiàn)場的輸入信號，如按鈕開關，行程開關、限位開關以及傳感輸出的開關量或模擬量（壓力、流量、溫度、電壓、電流）等，都要通過輸入模塊送到PLC。由于這些信號電平各式各樣，而可編程控制器CPU所處理的信息只能是標準電平，所以輸入模塊還需將這些信號轉換成PLC能夠接受和處理的數(shù)字信號。輸入模塊的作用是接收中央處理器處理過的數(shù)字信號，并把它轉換成現(xiàn)場執(zhí)行部件所能接收的控制信號，以驅動如電磁閥、燈光顯示、電機等執(zhí)行機構?？删幊炭刂破饔卸喾N輸入/輸出模塊其類型有數(shù)字量輸入/輸出模塊和模擬量輸入/輸出模塊。這些模塊分直流和交流、電壓和電流類型，每種類型又有不同的參數(shù)等級，主要有數(shù)字量輸入/輸出模塊和模擬量輸入輸出/模塊，部件上都設有接線端子排，為了濾除信號的噪聲和便于PLC內(nèi)部對信號的處理，這些模塊上都帶有濾波、電平轉換、信號鎖存電路。數(shù)字量輸入模塊帶有廣電耦合電路，其目的是把PLC與外部電路隔離起來，以提高PLC的抗干擾能力。數(shù)字兩輸出有繼電器輸出、晶體管輸出和可控硅輸出三種方式。模擬量輸入/輸出模塊主要用來實現(xiàn)模擬量與數(shù)字量之間的轉換，即A/D或D/A轉換。由于工業(yè)控制系統(tǒng)中有傳感器或執(zhí)行機構有一些信號是連續(xù)變化的模擬量，因此這些模擬量必須通過模擬量輸入/輸出模塊與PLC的中央處理器連接。模擬量輸入模塊A/D轉換后的二進制數(shù)字量，經(jīng)光電耦合器和輸出鎖存器宇PLC的1/0總線掛接。現(xiàn)在標準量程的模擬電壓主要是0—5伏和0—10伏兩種。另外還有：0—somV、0—IV、—5—+SV、—10—+10V，0—10mA等。模擬量輸入模塊接收標準量程的模擬電壓或電流猴，把它轉換成8未、10未或12位的二進制數(shù)字信號，送給中央處理器進行處理。模擬量輸出模塊將中央處理器的二進制數(shù)字信號轉換成標準量程的電壓或電流輸出信號，提供給執(zhí)行機構。
歐美品牌停產(chǎn)的，常用的“PLC”備品備件
我司產(chǎn)品應用于以下領域：
1,《發(fā)電廠DCS監(jiān)控系統(tǒng)》
2,《智能平鋼化爐系統(tǒng)制造》
3,《PLC可編程輸送控制系統(tǒng)》
4,《DCS集散控制系統(tǒng)》
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5,《智能型消防供水控制系統(tǒng)》
6,《化工廠藥液恒流量計算機控制系統(tǒng)》
7,《電氣控制系統(tǒng)》造紙,印染生產(chǎn)線,變電站綜合自動化控制系列
本特利，英維思，伍德沃德，?？怂共_、西屋、瑞恩、施耐德莫迪康、ABB、AB、西門子、摩托羅拉、GE發(fā)那科、安川、博世力士樂，ACSO，力士樂等各大品牌的DCS系統(tǒng)配件，機器人系統(tǒng)配件，大型伺服系統(tǒng)備件。
C61589 Varian G-292 Rotating Anode X-Ray Tube in B-130H
G52749 SSE Corp.M20 Wet Process Wafer Cleaning System
G54937 Alcatel IPUP A100L Dry Vacuum Pump
G54939 Alcatel IPUP A100L Dry Vacuum Pump
G71680 Valhalla Scientific D6100 Spectral Pwr.Analyzer
G54942 Alcatel IPUP A100L Dry Vacuum Pump
C54282 Hot Cold Temp Vacuum Wafer Chuck 11″Stage
G72623 Brinkman Metrohm 701 KF Titrino&703 Ti Stand
C67233 Adept Robot Module 90400-04318/XY-P177S180-1
A72721 Beckman Allegra 6R Refrigerated Centrifuge
L72707 Agilent VXI E1439C 95MSa/s Digitizer DSP Opt.001
C56452 Tektronix TLA715 Logic Analyzer(Calibrated 2010
G71828 DeHaart MPC 24/29 Screen Printer
L70516 Varian DS 102 Dual Stage Rotary Vane Vacuum Pump
A69922 Lot of(2)EPE Computer Power Center PowerPacs
C51252 Tektronix TLA715 Logic Analyzer(Calibrated 2010
CC44406 MRL 14TC-45 Conveyer Furnace/Reflow Oven
AC44258 Prometrix Spectromap Film Wafer System SM200/e
C69221 Wentworth FIX-R-1-E Probe Card Repair Station
A34721 Thermotron Environmental Chamber,460/3/60
A68882 Lindberg/Blue M STF55666C Solid Tube Furnace
C67797 R&K Rucker Kolls 300 Probe Card Building Station
C53849 Precision Measurement Microscope Sys w/X-Y Stage
C55172 Tektronix TLA715 Logic Analyzer
K67775 Kulicke&Soffa 6490 Semi-Auto DieBonder
N60611 2 Forma Scientific 3250 Water Jacketed Incubator
K71127 PRI Equipe ATM Wafer Robot&ESC-100 Controller
K71478 LOT 2 PRI/Equipe ATM Wafer Loading Robot Arm
A72337 PE Applied Biosystems GeneAmp PCR System 9700
C72662 Powervar GPI 3-Phase Power Conditioner 125kVA
C72667 MECS UTX-1000 Wafer Robot&CS-1000 Controller
C67115 HP Agilent 2090-0357 Vacuum Fluorescent Display
C67234 Adept Robot Module 90403-41063R XY-HRS063CS110A?D
CT40559 Multiple-Axis Focusing Laser Optics Positioner
C67232 Adept Robot Module 90400-04314/XY-P177S140-1AD
C67231 Adept Robot Module 90400-20025 XY-HRS025-M201A?D
C67230 Adept Robot Module 90402-30053 XY-HRS053-S201A?D-
C59691 Aetrium 900A Pick&Place IC Test Handler
C59690 Despatch LCC1-54N-2 Environmental Chamber
N66593 Beckman Instruments P/ACE 5500 System
A72720 Beckman GS-6R Refrigerated Centrifuge
L72705 Agilent VXI E2731B 20MHz to 6.0GHz RF Tuner
L72706 Agilent VXI E1439C 95MSa/s Digitizer DSP
N72744 Lot(2)HP 5890 Series II Gas Chromatographs
K72695 Innovate 9000 Semiconductor Test Head 220V
A72761 AMC Automation&Modular Component Modu-Con MX2
C70104 TermoTek P310 Recirculating Laser Chiller 18.0°C
C70149 Wentworth Probe Card Building/Repair Station
A62925 Nicolet 5DXC FT-IR Spectrometer
N59239 Nicolet 510 FT-IR Spectrometer FTIR
L69033 Asymtek FSLU Automated Wafer Loader(upstream)
C69606 Intevac NCT 200L Assy Sputtering Source Gun
C70441 Intevac Sputtering Source NCT Intervace Mark V
A39173 Carbolite Type GPC 12/65 Chamber Furnace,1200°C
AH43124 UTE SCS i 124 Substrate Vertical Lap Cleaner
A60926 ALPHASEM AG DB608-PRL Die Bonder w/Selectron
AC44359 Prometrix Resistivity Prober 6″VR-30A System
C71872 CTI-Cryogenics Cryo-Torr 100 Cryopump Cryo Pump
N62543 Branson/IPC PM-122 1000W RF Generator
N62542 Branson/IPC 2000C Controller 2000 C
K68523 Kern CPM1 Stereocomparato?r Mono/Stereo
A64697 Advanced Energy LDM Plasma RF Power Supply
AT51403 Hughes Model 2500 Automatic Die Bonder
Y69709 Hydra Cell Pump D17XASGNNEMB D17 D17X
A65762 Waters 717 Plus Autosampler
A64698 Advanced Energy PEP-2500 Plasma RF Power Supply
N70824 Christie Vista 38-DMD021-01 DLP Projector
N67909 BD GenTest KNA Solubility Scanner System
G61761 Applied Biosystems 373 DNA Sequence Stretch
Y69096 Asymtek FSL D Downstream Unloader
C69488 Neslab RTE-211 Refrigerated Recirculator Chiller
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