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#图片仅供参考#
1．*处理单元（CPU）
CPU作为整个PLC的核心，起着总指挥的作用。CPU一般由控制电路、运算器和寄存器组成。这些电路通常都被封装在一个集成电路的芯片上。CPU通过地址总线、数据总线、控制总线与存储单元、输入输出接口电路连接。CPU的功能有以下一些：从存储器中读取指令，执行指令，取下一条指令，处理中断。
2．存储器（RAM、ROM）
存储器主要用于存放系统程序、用户程序及工作数据。存放系统软件的存储器称为系统程序存储器;存放应用软件的存储器称为用户程序存储器；存放工作数据的存储器称为数据存储器。常用的存储器有RAM、EPROM和EEPROM。RAM是一种可进行读写操作的随机存储器存放用户程序，生成用户数据区，存放在RAM中的用户程序可方便地修改。RAM存储器是一种高密度、低功耗、价格便宜的半导体存储器，可用锂电池做备用电源。掉电时，可有效地保持存储的信息。EPROM、EEPROM都是只读存储器。用这些类型存储器固化系统管理程序和应用程序。
3．输入输出单元（I/O单元）
I/O单元实际上是PLC与被控对象间传递输入输出信号的接口部件。I/O单元有良好的电隔离和滤波作用。接到PLC输入接口的输入器件是各种开关、按钮、传感器等。PLC的各输出控制器件往往是电磁阀、接触器、继电器，而继电器有交流和直流型，高电压型和低电压型，电压型和电流型。
4．电源
PLC电源单元包括系统的电源及备用电池，电源单元的作用是把外部电源转换成内部工作电压。PLC内有一个稳压电源用于对PLC的CPU单元和I/O单元供电。
5．编程器
编程器是PLC的zui重要外围设备。利用编程器将用户程序送入PLC的存储器，还可以用编程器检查程序，修改程序，监视PLC的工作状态。除此以外，在个人计算机上添加适当的硬件接口和软件包，即可用个人计算机对PLC编程。利用微机作为编程器，可以直接编制并显示梯形图。
Siemens Contactor 3TB41 11-0A #27887
NIB Siemens 3TH8253-0A Contactor #26251
Siemens Contactor 3RT1034-1BB40 #55550
Allen Bradley 600 Volt Contactor 100-A09NJ3 #26545
Siemens Contactor 3ZX1012-0RT05-1AA1 #45992
Siemens Contactor 3RT1016-1AK61 #50282
Siemens Contactor 3RT1015-1AK61 #50284
Siemens Contactor, 3TD1017-1G, 115-575 Volt, #11897
Siemens Contactor 3RT1034-1BB40 #34890
Siemens Contactor 3RT1015-1BB42 #50285
Siemens Contactor 3RT1033-1BB40, 3RT #55543
Siemens Contactor 3RT1024-1K #45577
Siemens Contactor 3TB42 17-0B #35295
Siemens Contactor 3RT1 033-1BB40 #55548
Siemens Contactor 3TB40 17-OB #35355
Siemens Auxiliary Contactor 3RH1911-1HA22 #55552
Siemens Contactor 3RT1023-1B, 35 Amp, 600 VAC #46478
Siemens Contactor 3RT1026-1K #45533
Siemens Contactor 3RT1024-1K , 35 Amp #45565
Siemens Contactor 3RT1046-1BB40, 105 Amp #46513
Siemens Circuit Breaker 5SX2 C4, 230/400V, 6A/230V, 1A/220V #8534
Siemens Motor Starter Contactor 3RT1025-1B, 35 Amp #46455
Siemens Contactor 3RT1025-1K, 600 Volt 35 Amp #45536
Siemens Contactor 3RT1 446-6BB46 #58373
Siemens Reversing Contactor 3RA1326-8XB30-1BB4 #31793
Siemens Contactor 3TC4417-0B, Size 14, 600 VDC #17002
Siemens Contactor 3RT1317-1BB40, 20 Amp #38082
Siemens Contactor 3TF4 722-0AG2 #63244
Hunkar Weight Control 311-12 #10115
Hunkar Weight Control 311-12 #10113
Hunkar Adaptive Accumulator Control 311-4 #10118
Hunkar Labs Dual Accumulator Control 311-14 #10117
Hunkar Labs Data Acquisition Controller 60621DACIII Operator Interface #36285
Hunkar Labs Data Acquisition Controller 60621DACIII Operator Interface #36287
Hunkar Weight Control 311-5A #10107
Hunkar Labs Controller 60561-DAT, .5 Amp, 250 Volt #36280
Hunkar Labs Controller 60550 P-DAT, .5 Amp, 120 VAC #36282
Control Methods Inla Sense Optical OC24 #21579
Crouzet Pneumatic Control 81 503 710 81503710 #19254
Fanuc Power Supply IC693PWR322E #7096
Automated Logic Control Module S6104 #17052
Tarpon Automation FCD100 Power Controller 15 Amp #21373
LG Logic Controller G7L-PBEA #10950
Ranco Air Conditioning Control NEW A30-451 #51363
Magnetek GPD 503 AC Driver DS304 #37101
Eurotherm Controls Control TE10S #48885
RJG Control Module Dart-1002I Net 16 #24622
RJG Control Module Dart-1002I Net 2 #24623
Vogtlin Controller 452X #31745
Allen Bradley 1745-LP156 SLC 150 Processor #21205
OTC Control Box P1598K01 #36909
Hokuyo Automatic PR-YGAL2 Receiver #26296
Allen Bradley 1394-AM03 AC Servo Controller #18576
Plastrac Auto-Disc Gravimetric Controller #18280
Artis Monitoring Control Module MTC-W1-2 #44057
Current Industries Auxiliary Control EL-250-HPS #26208
Industrial Devices Linear Motion Control H3951 #31781
Love Controls 326-AP1-SP2 Self Tune Plus Control #11040
Allen Bradley 1775-KA Communication Adapter #5257
Vickers SMC20ENH08BNR211510 Motion Controller #14028
Siemens Display Controller 9BA2302 #7490
New Coss Qualifier Interface 9810-7050-96 #28811
Siemens Memory Module 6ES5373-0AA61 #29862
NIB OptiMate Communication Module B- OP-9001 #24291
RJG Control Module Dart-1002I Net 20 #24621
Josef Koberlein Controller RMA103, #11984
NEW Larco 5000 EX Zone Monitor #22754
Allen Bradley I/O Adapter Module 1771-AL #29132
Payne Solid State Control 18TB-2-25, #14299
NIB Yaskawa Manual Analog Operator JVF0A #18160
Current Industries Auxiliary Control EL-400 #26202
Mitsubishi A0J2-E56DR Controller #23018
Mitsubishi Melsec AX41 Programmable Controller #25691
Optimation OM-9001-2 Communicatons Master #16256
Nordson Radial System Controller 7060RA #42315
Current Industries Auxiliary Control EL-150-HPS #26176
Current Industries Auxiliary Control EL-100-MHI #26211
Dynapar Speed Regulator MS200S200 115/230 Volt #31810
Current Industries Auxiliary Control EL-100-HPS #26199
Yamaha Regenerative Unit RGU-2 #31860
Leeds & Northrup Controller 6432-4-4001-802-3-20 #31716
RJG Control Module Dart-1002 Net 25 #24619
RJG Control Module Dart-1002 Net 18 #24618
RJG Control Module Dart-1002 Net 3 #24620
Artis Controller FBI/MCON #44056
Emerson I/O Program Controller IOM-1 Expander #14734
Current Industries Auxiliary Control EL-400 #26204
Watlow Din-A-Mite Power Control DC3C-3024-K200 #49021
Bilz HF Receiver HFE3002-14U, HFE 3002/14U #34373
Indramat Keypad Controller Trans 01.5/1 #34004
Toshiba EC3211NNN1NNAH Process Controller #20611
American MSI PCB-ATC-SSR-2 #43777
Current Industries Control HCWITD-150-HPS-100 #26472
GE Fanuc Field Control Interbus HE670IBU100 #26389
Mitsubishi A0J2-E56DR Controller #23017
New Siemens Bus Plug RV361G 30 Amp #33599
Gettys Controller N350 Amplifier 11-1015-105 #11087
Moog Servo Motor Controller 152J453A Brushless #14698
Whitlock SSPROPORTIONING Solid State Control #10038
Ransburg Gema Flow Control #31734
Assembly Products Qualifier AQGFR-0B4 Controller #13908
Conair Microprocessor Control TW-2 #18090
Incon CAT Remote Operator Station 99005-000002 #19320
Current Industries Auxiliary Control EL-50-HPS #26235
Current Industries Auxiliary Control EL-1000-HPS #26210
Sprectrum Illumination BL44-660 with Cable #22081
NIRECO Web Tension Control 912622 TC250 #11413
Foxboro Controller KO143AK-E 760CNA-AT #10767
Siemens Adaption Casing 6ES5 491-0LB11 #33422
Grahm DC Motor Control 176B6002 #49221
SCI Electronic Control System PS 585-A1 #17069
Elva Power Supply INV30A #31769
Carrier 32L900600 Motormaster Pressure Control #23135
Anorad 5356 Laser Controller #13995
Omron C200H-1D217 Input Module #20873
Hokuyo Automatic PR-YGP2 Projector #26297
IMS 120927 Controller Direct 1000 View Panel #22350
Signal Systems Control BF-9518 Fire Alram #11194
New Omron V680-CA5D02 ID System ID Controller #20591
emecanique Controller TSX-172-2012 #14987
Parametrics Parajust AC Motor Control 601500 #16779
STI Controller CBXPS7100, 42007-0011 #29920
Triad Microguard Controller MG-28-0F-20 #31322
Ford Charging System Monitor EFHD #30469
Incon CAT Remote Operator Station 99005-000002 #19319
Incon CAT Remote Operator Station 99005-000002 #19318
Emerson I/O Program Controller IOM-1 Expander #14761
Schmersal Controller MH 302-11Y, 6 Amp #26256
Marposs Controller 8203230014, 08138 #56966
Watlow Din-A-Mite Power Control DC3C-3024-K200 #49019
Toshiba 7T20R2-34 Control #14199
Fec Axis Controller AXIS205 #32812
Watlow Solid State Power Control DC2C-4024-K2S0 #17780
Watlow Solid State Power Control DC2C-4024-K2S0 #17781
Triad Control TT-01NL, B-B63CH #28800
New Omega Controller CN74133 #40447
Payne On/Off Power Control 11D-2-30X #8480
New Crouzet Impulse Generator 81507 720 #29453
NEW Cutler Hammer Control Module WPBFV1 #18152
Hunkar Labs Machine Control 315-0 #33877
Ver KB31, P/N 520058 Control #27210
Uson Central Processor 21338 #14235
Allen Bradley 1745-E151 Expansion Unit, Series A #21213
General Electric Traction Motor Controller IC3645SR4W606N6 #64957
US Drives 3000-2005 Control Board #8852
Johnson Controls Pressure Control NEW P170CA-1C #51375
Sew Eurodrive Control Unit MCH41A-00 #42042
Fec Axis Controller AXIS203A #32811
Conair Micr Trac 3 Control Panel #30037
Power Ups DC Motor Control 2757 #11114
Barber Colman Controller 2204ECCVHH7 #33183
New BK Precision Vibration Unit 2522 B #7003
Modicon Memory Module M480-008, AS-9488-008 #44143
Conair Micr Trac 3 Control Panel #20718
Allen Bradley 1747-L30C Programmable Controller #24232
Marposs Controller U8203230000 #56965
NCC Program Control DNC-T2006-A10 #65491
Astro-Med Dash II Field Recorder 630040 #29107
Sieb & Meyer CNC61,61.01.0022.3 Control Module #42045
Sieb & Meyer CNC61,61.01.0022.3 Control Module #42046
Electrical South Motor Controls PCA105 #13317
Promeasure Control Module 4032X1 #34424
Gould Modicon Control Module AS-B827-032 #11091
Advantech PLC Controller AWS-861 Box Computer #11116
GE Fanuc IC609SJR110A Programmable Controller #18162
Vindicator CR-100 Control Transponder #13777
Ranco 010-1402-000 Pressure Control #26003
Current Industries Auxiliary Control ELN-400-HPS #26234
ABB Bus Network / Adaptor 200-AI0, P/N 492946501 #23121
Marposs Controller 8203230014, 06041 #56967
Marposs Controller 8203230014, 06041 #56968
Indramat Precision Control TRANS-01 TR20 #8284
Omron C200H-0D218 Output Unit #20958
Leukhardt Systems Controller DEASY-DKA 32 #37083
Allen Bradley 1745-E151 Expansion Unit, Series B #21209
Seco AC Flux Vector Drive SV3000 Keypad #20691
ABB Panel Unit 3HAB 7215-1/07 #29382
New Applied Robotics Pneumatic Module 0501-D01A-00 #30018
Indramat Keypad Controller Trans 01.3/1 #34005
Ingersoll Rand Control Module 99384224R0.4 #33330
New Allen Bradley 5250LP1 Processor Module #28809
Allen Bradley 1394-AM03 Servo Controller #10486
Ingersoll Rand Torque Controller PFSI-G #49624
Indramat Keypad Controller Trans 01.4/1 #34001
New Banner Controller GMMDSD1NT-1T2 #31815
Indramat Keypad Controller Trans 01.7/1 OP01 #34003
Movomatic Control Circuit PC3118f #7031
Murata Seiko SC-24 Sensor Controller #31750
Fanuc A06B-6050-H103 Velocity Control Unit #23400
Nachi Fuji Koshi Servo Amplifier AUXL111 #5376
Bodine Electric Motor Control 815, 2.9 Amp 115 VAC #43168
Indramat Keypad Controller Trans 01.7/1 OP01 #34002
Minster Press Speed Synchronizer Control 490-0216 #8299
Omron C200H-0D218 Output Module #20874
Lenze Adjustable Speed AC Motor Control LZF05-1S #20600
Banner GMMSDINT-1T2 Mini Screen Controller #11323
ATI Control Module DP45-M #29202
New Signet Flow Controller 3-9010.121 #17291
Danfoss 176B6004 Cycletrol 150 Speed Controller #22298
Watlow Controls V01-240-10-AT2 #16305
New Applied Robotics Pneumatic Module 0501-D03A #30016
Allen Bradley 1745-E151 Expansion Unit, Series B #21210
Allen Bradley Servo Controller 1771-HS1 #43955
New Modicon Programmable Controller PC 0984-480 #44085
Moeller PS4-151-MM1Programmable Controller #10811
Sieb & Meyer CNC61, 61.01.0022.4 Rev 3 Control Module #42047
Ingersoll Rand Controller 99388019R05 #7116
Square D Weld Control Module 8994 SYS80 #25973
Square D Weld Control Module 8994 SYS80 #25968
Square D Weld Control Module 8994 SYS80 #25969
IFM AS-i Controller AC1337 #59216
Hunkar Labs Machine Control 315-0 #33875
ITW Ransburg I/O Module 74735 #33315
Control Technology Controller 2600XM-10 #32344
Turck FDNL-L0800-T Bus Stop #24485
New Accu-Sort Systems Scanner Control 4800 #28813
Pertron / Square D Weld Control 1201228-802B0T1 #28499
Watlow Power Control DC30-24K2-0000 #42147
Watlow Solid State Power Control DC2C-4024-K2S0 #17772
Allen Bradley Controller & Slot Rack 1747-L20C, 1746-A2 #5741
Atlas Copco Control 4240037081, QCS2-T-34025 #13306
Allen Bradley 2004C-08-EN Data Control Module #24626
Keyence CV-701 Compact Vision System Controller #22085
GSE Tech Motive Tool 480040-01000 CS40 Control #31741
Yaskawa C1MR-V7AT20P4 Digital Operator #21137
Keyence MS-H75 Din Rail Drive w/ Digital Readout #20296
ATI Tool Changer DN45-T #31924
ATI Tool Changer DN45-T #31926
SMC CLAN80-400-D-X1US Acturator-Cylinder Tie Rod #19101
Fec Axis Controller AXIS203A #32809
Allen Bradley Smart Motor Controller 150-A97NBD #56889
Drivecon VFK1-415-F3 Controller 2.9 KVA #20300
Electric Cylinder Control H3801 #31780
NEW Load Controls PMP-1701 Load Controller #20981
Movomatic Digital Filter PC 3185a #5712
APC Power Module SYPM4KP #44169
Atlas Copco Control 4240 0340 81, QCS-T34025 #13430
Barber Colman UPGX11-1-64-303-01 Control Card #16881
Mac Devicenet Controller SM32DNA-BCBAAM2A92 #31862
Square D Weld Control Module RMWC3844 #25972
Industial Control Equipment Output Module 75B30 #26910
Opto 22 Programmable Logic Controller B3000 #42209
Mitsubishi Motion Controller A171SC PU-S3 #30895
New Mitsubishi Data Link Unit QJ71BR11 #42091
Plastrac Auto-Disc Gravimetric Controller #18277
Ormec Generation III Motion Controller GN3-40 2MI V2.0B, MODEL 40, #10989
ABB Stromberg Control Unit ACS50X-XXX-X-00P #31861
Vickers SMC Moton Controller Rack SMC21-S-1-115 #32252
ABB Parajust AC Motor Speed Control G01300A00 #11192
Omron C200H-NC211 Stepper Control Module #20877
Mitsubishi Programmable Controller AOJ2-E56DR #25931
Distaview Liquid Level Controller MU0IE024I-LQV #56220
Barber Colman Module 80BB-00002-001-0-00R #34049
Distaview Liquid Level Controller MU0IE024I-LQV #56219
Distaview Liquid Level Controller MU0IE024IAT-LQV #56221
Indramat Keypad Controller Trans 01.4/1 #33994
Indramat Keypad Controller Trans 01.4/1 #33995
Hunkar Labs Machine Control 315-0 #33872
Banner GMMSDINT-1T2 Mini Screen Control NEW #11325
SCI Solid State Control System LS 2308-A1 #29806
HPM D2-017-707 Command II Microprocessor Control #15384
DVT Controller for Camera 800-25M-DC-512K #21307
Atlas Tensor S4/S7 Control Unit PF30007-G-HW #36001
Ransburg Gema Flow Control #31922
Barber Colman Control Card Rack 40BA-211BC-CCA-A-00 #23424
ABB Ransburg HV Controller Unit RHC933 #25982
Ransburg Gema Flow Control #31735
Aerotech Unidex U12R-2-B Motion Controller X2-DM4001-20-F1 #20287
Omrron 3G2S6-CPU17 Programmable Controller #26327
MagneTek Gemco Control Panel Keypad 1989-KP Quik-Set III #5176
Moog Digital Motor Control 164-007E-10-B2-2, #13981
Velconic Control VLPSV-025P2-HC 1PH, #10104
Square D Weld Control Module 8994 SYS80 Rev B f#25970
Ingersoll Rand Torque Controller PD1G1A1AAN #49625
Square D Pertron Controls RS232 Data Panel #22753
