福建中立恒自动化设备有限公司
1．输入/输出单元
输入/输出单元通常也称I/O单元或I/O模块，是PLC与工业生产现场之间的连接部件。
PLC通过输入接口可以检测被控对象的各种数据，以这些数据作为PLC对被控制对象进行控制的依据；同时PLC又通过输出接口将处理结果送给被控制对象，以实现控制目的。
由于外部输入设备和输出设备所需的信号电平是多种多样的，而PLC内部CPU的处理的信息只能是标准电平，所以I/O接口要实现这种转换。
I/O接口一般都具有光电隔离和滤波功能，以提高PLC的抗干扰能力。另外，I/O接口上通常还有状态指示，工作状况直观，便于维护。
PLC提供了多种操作电平和驱动能力的I/O接口，有各种各样功能的I/O接口供用户选用。I/O接口的主要类型有：数字量（开关量）输入、数字量（开关量）输出、模拟量输入、模拟量输出等。
常用的开关量输入接口按其使用的电源不同有三种类型：直流输入接口、交流输入接口和交/直流输入接口。
常用的开关量输出接口按输出开关器件不同有三种类型：是继电器输出、晶体管输出和双向晶闸管输出。
继电器输出接口可驱动交流或直流负载，但其响应时间长，动作频率低；而晶体管输出和双向晶闸管输出接口的响应速度快，动作频率高，但前者只能用于驱动直流负载，后者只能用于交流负载。
PLC的I/O接口所能接受的输入信号个数和输出信号个数称为PLC输入/输出（I/O）点数。I/O点数是选择PLC的重要依据之一。当系统的I/O点数不够时，可通过PLC的I/O扩展接口对系统进行扩展。
2．通信接口
PLC配有各种通信接口，这些通信接口一般都带有通信处理器。
PLC通过这些通信接口可与监视器、打印机、其它PLC、计算机等设备实现通信。
PLC与打印机连接，可将过程信息、系统参数等输出打印；与监视器连接，可将控制过程图像显示出来；与其它PLC连接，可组成多机系统或连成网络，实现更大规模控制。
与计算机连接，可组成多级分布式控制系统，实现控制与管理相结合。远程I/O系统也必须配备相应的通信接口模块。
3．智能接口模块
智能接口模块是一独立的计算机系统，它有自己的CPU、系统程序、存储器以及与PLC系统总线相连的接口。
它作为PLC系统的一个模块，通过总线与PLC相连，进行数据交换，并在PLC的协调管理下独立地进行工作。
PLC的智能接口模块种类很多，如：高速计数模块、闭环控制模块、运动控制模块、中断控制模块等。
以下链接皆有货
Aftermarket ER196639 Hydraulic Pump
Kobelco PH91V00002F1 Compressor
Wai VRC2010 Tester Vr
Case 87686595 Dia Kit Tractor
Case 84312162 Gear Bevel
Timber Jack Replacement 843159200 Hub
Case 765101 Shaft
Komatsu 76855773 Kit Seal
15-13306-010 Insert .25 Lx8.75 X115 1 for liner
Mopar 68584184AA Radio
Aftermarket AT310961 Wiring Harness
Case 76073446 Support
Oshkosh 64112CX Diff Lkout Chamber
Dana 123909 Spicer Highway Sleeve
Aftermarket AZ51809 Shaft
Stanadyne Diesel Corp 05513 Part
340661-154 Engine Overhaul Kit for PAI
Dana 140000 Differential Case Kit Plain, Half Case
Komatsu 562-15-12390 Plate
Redneck Trailer 2602212 25k 5.0 Ax 12 Mh U/S Weld On
International 3615549C93 Seat Driver Hi Air Susp Vinyl
Aftermarket AT76283 Wheel
Aftermarket AW35304 Blade Kit
2686361 Housing Filt for Caterpillar
Aftermarket 9042356 Hydr Pilot Control Valve
Agco 546208D1 Harness
Agco 4260662M2 Case
68312543ZE Multi Media Radio for Chrysler
Detroit Diesel EA4720503802 Camshaft Frame Kit
Hyster S01787750005 Controller Combi
Komatsu 723-11-01420 Valve Asm
Fox 88306200 Kit: 21 2 Wd F150 Front 2.5 for Ford
Gm 25851475 Radio
Hyster S01348220010 Wheel
Paccar P92-9086-1100300 *
Case 31L6-02150 Motor Electric
Meritor 3892S4023 Spur Gear
Case H4616544 Board Printed Circu
FR3Z6362900HD Cover Asy Seat Cushion for Ford
Schaeff 5821661028 Cable Harness
Case YY30V00062F1 Valve Control
Agco WR704468 Belt
1379794 Tube As for Caterpillar
Case 04671430 Mounting Parts
Mach M11-597139 Gear Set 5.29
Case 87326446 Board Printed Circu
7I1086 Barrel for Caterpillar
Us Tarp 14076EZHD-BA 4 Spring 4 Spring
Yale 580000931 Cylinder
Case 72114436 Barrel
Link Belt BLG0189 Coupler
Komatsu R707-11-11A00 Cylinder Barrel
Acdelco 177-1175 Front Disc Brake Rotor
Case 815211C21 Hub
4431914 Harness As for Caterpillar
Komatsu 5026136 Gear Ring
Delphi 9320A280W Part
Kenworth P92-5014-11100 Harness Ip Manual Trans
Mitsubishi 51056668 Tube Axle
Liebherr American 7368869 Rubber Element
Komatsu 14X-15-52311 Carrier
Doosan 3.444-00005 Rod Ass'y
Aftermarket AT174388 Link Bellcrank
Icon 58747C Ext Trvl 2.5 Vs Rr Cdcv Colovr Kt
Komatsu 207-62-83490 Valve Asm
0964321 Carrier for Caterpillar
Komatsu 707-00-0C860 Cylinder Asm Swing
Agco AG722711 Bearing Pillow Block
Komatsu 723-11-01410 Valve Asm
Axletech 3891W1921 Pinion Planetary
Doosan 622-00409 Panel;Door Ass'y
Terex 622-00409 Panel;Door Ass'y
Case 86729858 Support
Aftermarket AZ59866 Control Valve
Mitsubishi 9427103400 L/B 5 M20 C W1000
Mitsubishi 1141712 Load Kit Whl
Case 119260A1 Extension
Schaeff 6501089003 Tube Cyl
Carrier 08-00206-10SV Cond Retrofit Kit,Marinize
Mack 4103-5010450918 Manif
Gm 12389904 Gear Set Diff Ring Drv P
Cummins 5658396 Blem Scratch Dent; Possible Rustw/Liners Part # 5658395
Mopar 6RN58VXWAA Wheel
Peterbilt M92-6078-001 Harness Aftrtrtmt Mx11 320
Peterbilt K3980 Kit Lever Shift Electronic Rho Cobra
Case 89500418889 Bracket
Terex 1187050 Conditioned Shutoff
Bezares Usa PT120X13DDA Power Take (Pto) Assembly Rear, Heavy Duty,
Replacement 3T8098 Brake Pump for Caterpillar
Komatsu 19M-30-11382 Plate
Garrett 802774-5008S Turbocharger Service
Capacity 137255K Capacity Of Texas, Inc.
Case 84807553 Axle Front
Komatsu 417-22-32411 Shaft
Turbo Solutions NHA8269 Turbocharger, He351 Ve 4034309 5494878 Actuator
Komatsu 6162-63-4100 Tension Asm
Aftermarket T35902 Pivot
Hammond Power Solutions 194171 Transformer 51 Kva 230 Pri 460 Sec
Komatsu 723-11-01430 Valve Asm
Komatsu 561-88-68730 Piston
Hyster 1639766 Hydraulic Pump
Mitsubishi 9430491030 Tilt Cylinder Asm
Horton 99A8652 Dm Advantage Fan Clutch
Trp RF913303254 Air Brake Compressor
Kobelco LF32T01007F3 Kit Rer for PAI
Miller Electric Manufacturing Co. 240626 Circ Card Assy,Fr Pnl Di
Hyster 1688554 Brake Asm
Fairfield Manufacturing Co S1CA33S5 Swing Drive Asm
Komatsu 135-12-31110 Cover
Doosan MX351693 Manifexhaust
Zf 4474-353-056 Output Shaft
Kenworth J19-1024-32112S Column Asm Steering Tilt/T
Aftermarket RE36464 Hydraulic Cylinder Barrel
1740722 Tube A for Caterpillar
Acdelco 12668716 Head Asm Cyl (W/ Vlv)
Case D87071 Valve
Case 230605A1 Valve
Komatsu 66978A Valve
Case 79056939 Valve Control
Bezares Usa PT120X13DSB Power Take (Pto) Assembly Rear, Heavy Duty,
Mack 24214524 Cam Kit
Stanadyne Diesel Corp 05694 Part
Komatsu 708-27-00282 Cylinder Block
Komatsu 42U-17-H0T08 Gear Pump Asm
Komatsu 600-633-6900 Fan
A3760960899 Fuel Injector for liner
Kobelco LV22V00003F2 Valve Assy, Relief
WAB 400 866 581 0 Abs Electronic Control Unit 6 S6 M Esc W/18 for liner
Mack 20QC4322 Steerring
International 1697750C92 Radiator Beta L/Oil Cooler
Muncie Power Products SH8SU6809P1IX Muncie Pto
Morimoto LF508 Xb Ld Headlgts Fd Super Duty