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目前，PLC在國內(nèi)外已廣泛應用于鋼鐵、石油、化工、電力、建材、機械制造、汽車、輕

紡、交通運輸、環(huán)保及文化娛樂等各個行業(yè)

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#圖片僅供參考#

1．*處理單元（CPU） 
CPU作為整個PLC的核心，起著總指揮的作用。CPU一般由控制電路、運算器和寄存器組成。這些電路通常都被封裝在一個集成電路的芯片上。CPU通過地址總線、數(shù)據(jù)總線、控制總線與存儲單元、輸入輸出接口電路連接。CPU的功能有以下一些：從存儲器中讀取指令，執(zhí)行指令，取下一條指令，處理中斷。 
2．存儲器（RAM、ROM）
 存儲器主要用于存放系統(tǒng)程序、用戶程序及工作數(shù)據(jù)。存放系統(tǒng)軟件的存儲器稱為系統(tǒng)程序存儲器;存放應用軟件的存儲器稱為用戶程序存儲器；存放工作數(shù)據(jù)的存儲器稱為數(shù)據(jù)存儲器。常用的存儲器有RAM、EPROM和EEPROM。RAM是一種可進行讀寫操作的隨機存儲器存放用戶程序，生成用戶數(shù)據(jù)區(qū)，存放在RAM中的用戶程序可方便地修改。RAM存儲器是一種高密度、低功耗、價格便宜的半導體存儲器，可用鋰電池做備用電源。掉電時，可有效地保持存儲的信息。EPROM、EEPROM都是只讀存儲器。用這些類型存儲器固化系統(tǒng)管理程序和應用程序。
 3．輸入輸出單元（I/O單元） 
I/O單元實際上是PLC與被控對象間傳遞輸入輸出信號的接口部件。I/O單元有良好的電隔離和濾波作用。接到PLC輸入接口的輸入器件是各種開關(guān)、按鈕、傳感器等。PLC的各輸出控制器件往往是電磁閥、接觸器、繼電器，而繼電器有交流和直流型，高電壓型和低電壓型，電壓型和電流型。  
4．電源  
PLC電源單元包括系統(tǒng)的電源及備用電池，電源單元的作用是把外部電源轉(zhuǎn)換成內(nèi)部工作電壓。PLC內(nèi)有一個穩(wěn)壓電源用于對PLC的CPU單元和I/O單元供電。 
5．編程器  
編程器是PLC的zui重要外圍設備。利用編程器將用戶程序送入PLC的存儲器，還可以用編程器檢查程序，修改程序，監(jiān)視PLC的工作狀態(tài)。除此以外，在個人計算機上添加適當?shù)挠布涌诤蛙浖纯捎脗€人計算機對PLC編程。利用微機作為編程器，可以直接編制并顯示梯形圖。

GM Shunt Amp Motherboard GM3023A #13185

Allen Bradley Termination PC Board 1746HT #51557

Indramat Circuit Board 109-450-3201b-2 #60160

NSD V8L55-11 Sensor Controller Board #18708

Lantech Power Board VA550-011-01 CD Drive Ctrl #10528

Comstar Circuit Board Model: 8003 2102 # 42551

Allen Bradley Circuit Board 135230 #59174

New Daifuku EMC PCB Board VPB-4309 #31746

Accutrac Circuit  Board UE90121, #12990

Circuit Board 1022583 Rev B #23382

Miller Circuit Board 071642, 148639B KG-33 #28063

Hyundai Circuit Board HYM532200AM-70FMA #26262

Movomatic MC Relay Unit PC 3181b Meseltron #7032

Bachmann Electronic Circuit Board GTS 12 94V0 #54453

Bachmann Electronic Circuit Board CC11/4 E06048/00 002 #54459

Siemens Communication Module 6E55 254-4UB21 #37346

Data Logic Serial Controller Board HS850B-4 #13795

Yaskawa JANCD-MRY01-3 Rev D03 Board #15253

Siemens Analog Module 6ES5243-1AB11 #29886

New ABB Memory Board 3BSC980006R89 #28907

Siemens Control Board C98043-A1054-L409 #53956

SCC COMAU Board PWB2589471-0002, REV F #31879

Sanyo PC Board A7-1-20047-1C  #20805

Nematron Circuit Board 100A0529 #24020

JWF Circuit Board PNK9322B #33965

Harmo NC-DA-01 Circuit Board #23457

Felton Circuit Board X1 390530161.000.3 #17188

Barber Colman Circuit Board A-13011 #32780

US Drives 3000-4010-2100-S Control Board #6893

IDC Display Board TM84-DAD #37599

Automata VEM Digital I/O  Board 0321000080 #63003

Indramat Circuit Board 109-450-3201b-6 #60163

New Conair 107-213-01 I/O PC Board #20283

Parker Hydraulic Cylinder 01.50 JJ2HLT14A, 3000 PSI  #21833

Sepro Robotique 07S01008B PC Board #10065

Helm Circuit Board B10C311-4 #51045

Allen Bradley Driver Board 42305-118-55 #44486

Sterlco Display Card 785A196U #47433

National Instrument Circuit Board 3296/2C #48342

Allen Bradley X-361854 Power Address Board #27259

Allen Bradley Circuit Board 74102-312-51 #36368

JWF Circuit Board ADV9424 #33958

Reliance PC Board 0-48652, #15217

Allen Bradley Circuit Board 900443 #35795

NEW Reliance 0-51847-4 Voltage Detect VLDE #23191

Hunkar Labs 61265-05 Circuit Board #33982

Acuity Imaging PC Board LG-3 Frame Grabber, Circuit Board #21776

Adept Tech DIO Slot Card 10330-00800, Circuit Board #7624

Nissei Circuit Board TP-2049, PAN-01, NC-8000 #34136

Conair Monitor Card  PC Board 107-334 #51131

Perceptron Processor Board 495-0191 Frame Grabber 29400

Allen Bradley Chassis Board for Slot Rack 960152 #46972

Hakko/Fuji Circuit Board w/ on/off C56C57 XTAL4 #15482

Indramat Circuit Board 109-450-3201b-5 #60155

Nissei Circuit Board TP-1A106, NC-8000, MOT-01 #34138

Mould Tek Feed Ctrl Board CAC-AGRFDR-2-B-9/95 #17523

Moog PC Board D122-025-A002 A Circuit Board #17140

Xymox Technologies Logic Board Control  #18140

Hunkar Labs 61346.03 Circuit Board #33976

Siemens Module Simatic S7  6ES7 134-4GB52-0AB0 #55023

Octagon Systems Circuit Board IO-WLS #58174

Mattec Dual Processor CPU Board 350-0091A #13540

Reliance 0-51847-1 Voltage Level Detector Board #17282

Hunkar Labs 61349.01, HE-3-VO Circuit Board  #33915

Circuit Board 4499C, 64768 #43174

Circuit Board 4498C, 64765 #43181

US Drives 3000-4000-5 PC Board #6845

Mitsubishi PC Board BN624A135H01, M-5000C #20851

Dolan Jenner Circuit Board PWA 01-022013 #47089

Dolan Jenner Circuit Board PWA 01-022109 #47095

Adept Tech Binary I/O Board 1031058010 #13991

Mitsubishi BN624A550G52 PC Board FX231D #8773

IDC  Corp PC Board TM88-DAD, REV D #43672

Indramat Circuit Board 109-313-3201b-7 #60202

Indramat Circuit Board 109-313-3201b-6 #60208

Indramat Circuit Board 109-313-3201b-4 #60199

Conair Sepro Circuit Board 333004 #17306

Siemens PC Board Power Supply 6SC6100-0GB12 #53427

Helm Circuit Board B10C704-0C #51062

Balance Engineering Circuit Board BMCP 200, BE-249-577-D, REV B #43583

Honeywell Communication Module 620-0044 #13832

Allen Bradley Power Supply Circuit Board 151084, RV 01 #37255

Bachmann Electronic Circuit Board CVA500 B 2532/00 #54446

Hunkar Labs 60078, HE-3-VO Circuit Board #33909

Helm Circuit Board B10C301-2C #51058

KT-Synetics Input Isolator Board 871-21281-00 #15223

Valenite Circuit Board 766G101-L09 #49382

GSE Line Display Unit Board PC670H 40-20-21084 #23125

Barber Colman Circuit Board A-13012-901 #32782

Allen Bradley Drive Board 74102-405-53   #35786

Star Circuit Board 9736-PROID, SVC-I #37729

Circuit Board AW701-210 Rev D #29362

Hunkar Labs Monitor Interface Board 61344-01 #34031

Inducto Elphiac Circuit Board # 2EL700697 #48644

Siemens Back Plane Board 6ES5 700-2LA1, 811 0258 01 A #51710

Fuji Electric UMI5A-B PH-I Card #23199

Galil Motion Control DMC 1341 & Cable #11111

Siemens Input Module 6ES5 244-3AA13 #49645

Mitsubishi PC Board  BN624A128H02, LC23C, #20844

Ranger Automation Systems Circuit Board R-IPCB1 #41746

Balance Engineering Circuit Board BMPI 110, BE-236-635-D #43584

Inducto Elphiac Circuit Board 4EL703221/C #48681

Hunkar Labs Dual 15V Regulator Board 61206-02 #34037

Fanuc Circuit Board A16B-2200-039 #60283

Reliance Electric PC Board 0-52808-2 #11293

New NSD PC Board V8L55-11 Circuit Board #13313

Mould Tek CAC-AGRFDR2-3-A11/95 Feed Ctrl Board #17518

Sanyo PC Board A7-1-30249-1B, #20769

Star PC Board 13818-PRO2A, SPC-1H-D Circuit Board #20635

Star Seiki Sequence Board 11800-PR01D, S311M, Circuit Board #5687

SCI Epic I/O D'BD PC Board 22886 #25452

Indramat Circuit Board  109-468-3201b-3 TAZ 2 #34256

Bachmann Electronic Circuit Board GTS 12 94VO 9237 #54455

Vee Arc PC Board & Key Pad 930-700, 930-602, Circuit Board #3680

Nachi PC Board UM802E Circuit Board #3692

Bachmann Electronic Circuit Board CA 16P2.5 2596/00 #54460

Allen Bradley Axis Power Board 74102-328-53 F #36163

Adept 030 Circuit Slot Card 10332-31150 #7616

Elektronik PC Board 262 1318 84 8, #6914

Yaskawa CNC Movement Control Board JANCD-MCP02-1 #15250

Muegge PC Board MW-LSCE3327-6K-006  #23028

Siemens CPU Module 6ES5 947-3UA21 #48210

NEW Reliance 0-51847-4 Voltage Detect VLDE #23191

Vickers Control Card 916339 REV D PC Board #32856

Diversified Tech PC Board 651300130 FloNet #23988

Triad Controls 31-031 Circuit Board #24328

Allen Bradley Chassis Board For Slot Rack 960152-01 #46975

Siemens Interface Module 6ES5 312-5CA11 #37350

Mattec Circuit Board 350-0100A, 350-0100F Rev E #13539

Kitamura Circuit Board 3-E98663 #60285

FTG Data System Precision Light Pen Board PXL-380 #43789

Circuit Board RKV9215B #33961

IDC Corp PC Board TM90CPU REV F #43669

Daytronic 9170 Strain Gauge Conditioner #26776

Accuray 2-066692-001 Circuit Board #26435

Accuray 9-067451-002 Circuit Board #26439

NEW Honeywell PWA Controller 30755393-502 #13850

Siemens Simodrive Board 6SC6120-0FE01 #53424

Seiko KN029DB Axis Drive Card for RT3000 Robot #23143

Helm Circuit Board B10C306-0 #51038

Metrel Circuit Board 2.01.711, 201711, #14025

Hunkar Labs 61348-03 Servo Amplifier Circuit Board #34025

Helm Circuit Board B10A333-1C #51060

Sepro 07S0095104/A P97 04 PC Board #17311

Sepro Circuit Board 07S0096304/A #17317

Sepro Circuit Board 07S00955.104/A #17304

Allen Bradley Circuit Board 90042992 #35804

Allen Bradley AC Drive Board 1336-B007-E0D-L3 #37253

American MSI Circuit Board PCB-ATC-DST-1A #43813

Allen Bradley Circuit Board 74102-568-51 #35806

PCS PC Board 2014-101 # 37987

Allen Bradley Drive Control Board 74102-347-52 #36013

Slicing Specialist Circuit Board STS-4040-CPU-512 #47633

Process Control Weigh Controller Baord C1815 #51353

Adept Tech DIO Slot Card 10332-11400 Circuit Board #7623

Powertec Circuit Board 4001-144009-501 #62883

Data Logic I/O Controller Card HS403BH #25924

Helm Circuit Board B10C947-2 #51040

Adept Processor Board  10332-11150 #35933

Sanyo PC Board A7-1-20048-1C #20809

Moog PC Board D122-025-A019,  REV A, #17143

Mitsubishi PC Board BN624A083H01, LC103D, #20847

Allen Bradley Control Board Rev. 14 74102-588-51 #35779

Magnetic Power Systems 3D100-1 Circuit Board #22302

Star Circuit  Board 11800-PRO4A, DXC-15 #37793

American MSI ATC-AOB PC Board PC890320 #43786

Nachi Circuit Board UM-837A PC Board #3311

New Northern Computers Control Board AD1853N-2 #55872

American MSI PCB-ATC-1/F-1A Circuit Board  #43784

Siemens Servo Drive Control 6SC6108-0SG02 #53421

Mitsubishi PC Board BN624A074H03, #20840

New Muegge 82260-01550 Control Board #23025

Mould Tek Feed Ctrl Board CAC-AGRFDR2-3A-11-96 #17495

Balance Engineering Circuit Board BMCC-100 BE-236-639-D #43612

Sanyo A7-1-30235-1C Circuit Board #20832

GFM / Keba Circuit Board GVME600SC-B #31866

Cegelec Controls PC Board 20X3353A1L #18190

Star PC Board 13818-PROIA, SPC-1H-C #5880