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 RE61414 Flywheel Statically Balan

5097107AA Crankshaft for Chrysler

Hyster 1544913 Vented Panel Lh Asm

Komatsu 17M-22-22150 Gear

1052761 Edge As for Caterpillar

Am General PT010303 Differential Rr

Case 84807543 Axle Rear

5579421PX Kit, Injector for Cummins

Aftermarket AN203981 Planet Pinion Carrier

Dana 218836 Kit Gear Pin  Nut

Automann 564.220660 Hood /Gm Fob Price for Chevrolet

Case R56727 Kit

Komatsu 3EA-21-00010 Case Asm

Komatsu 205-57-00023 Cushion Asm

3561880 Cylinder G for Caterpillar

Case 87556716 Distributor

Komatsu 714-12-05310 Service Kit

Block B-1407148 Transformer Voltage

Mitsubishi 91K0504300 Cable Earth Lpg

Komatsu 07433-71803 Pump Asm

Addictive Desert Designs F980393070 Jeep Jl/Jt Phantom Winch Stubby Fro

DW 170-025-0325 DW  Garrett Turbocharger Tp3801

Case YN55S00008F3 Monitor Control

Aftermarket LCA53161 Gatherer Point

Mitsubishi 9446303080 Lift Cylinder 7.0 M

Chelsea 890UAFJW-B5XV Power Take (Pto) Assembly 890 Series, Power Shift

Kubota G1191-02300 Assy, Rotor

Agco 4380942 Cylinder Hydraulic

4705481 Bus Bar for Caterpillar

Case 76043207 Gear Bevel

Yukon YGK2179 11.25in. Dana 80 3.73 Rear Ring/Pinion; Install Kit; 35 Spline

Yukon YGK2144 10.5in. 4.11 Rear Ring/Pinion; Install Kit; 35 Spline Po for Ford

Yukon YGK2169 11.25in. Dana 80 4.56 Rear Ring/Pinion; Install Kit; 35 Spline

Yukon YGK2168 11.25in. Dana 80 4.30 Rear Ring/Pinion; Install Kit; 35 Spline

Yukon YGK2166 11.25in. Dana 80 Thin 3.73 Rear Ring/Pinion; Install Kit; 35 Spl

Yukon YGK2182 11.25in. Dana 80 4.30 Rear Ring/Pinion; Install Kit; 35 Spline

Yukon YGK2183 11.25in. Dana 80 4.56 Rear Ring/Pinion; Install Kit; 35 Spline

Yukon YGK2184 11.25in. Dana 80 4.88 Rear Ring/Pinion; Install Kit; 35 Spline

Yukon YGK2097 9.75in. 3.55 Rear Ring/Pinion; Install Kit; 34spl Posi; for Ford

Yukon YGK145 Yukon Gear/Kit Package For F350 Dana 80 Rear/Dana 60 Front; With

Komatsu 30D-13-11180 Shaft

7283033430A0 Armrest Asm Rr Seat Ctr for Toyota

Dana 217121 Clutch Hub

7D5242 Housing for Caterpillar

IHI Turbo F5BVED-S0022B Ihi Turbocharger Rhf55 V

Case 87653621 Hydraulic Cylinder

Bobcat-Replacement 6967205 Rear Distributor

Perkins 41424138 Pan

Ex-Guard XG-175BG2 Guard Black Gen 2

Mopar 68059525AM 68059525am

Komatsu 34B-14-11131 Shaft

Aftermarket 4448088 Cylinder Kit

Liebherr American 11117483 Valve Block

Epiroc 3115238200 Absorber

Skyline Emissions BG0432-C Doc Kit Consisting Of 1 Doc, 2 Gaskets, And 2 Clamps

Komatsu 207-62-61900 Valve Asm

Demag 26806640 Control Piston Hc190

5290481 Bushing for Caterpillar

Case 198881A2 End

Case 47628175 Plate

Bendix K160216SC001 Abs Ecu

Komatsu 98099173 Pipe

Komatsu 426-16-11750 Tube

Komatsu 208-977-6460 Valve Asm

Komatsu YA3237 Harness Str

Aftermarket AT410237 Wiring Harness

033-92375-0 Port Blk P67 V Non Mag for Denison Hydraulics

Whelen Engineering RX8FFFF Justice Wcx Duo 50' F/F/F/F

Heavy Motions H380GDFJP-B5RK Pto

Peterbilt K-4223X Kit Gen 3 Xy Shifter  Exch Heavy

2K2430 Lever Asm for Caterpillar

Saf Holland 48100215 Service Reminder Kit

Komatsu 6218-81-8750 Wire Harness

68053295AA Rear Axle Housing for Chrysler

Link Belt 1K 0543 Sheave Ductile

Hyster 2055542 Cylinder Asm Main

5309477 Ring Tube for Caterpillar

39810-TA0-305 Display, Navigation for Honda

Aftermarket AH219986 Hydraulic Cylinder

Pbm 60-402-T6 Charger (3 Phase 36 V 140 Amp)

Case CAS2608 Tool

Z00518E3X690DP132M Motor 2.5/5.0 Kw Obs Use Nfor Denison Hydraulics

1NT30XDVAB Instrument Panel Panel for Chrysler

Aftermarket 4001898 Shift Collar

0942491 Idler Wheela for Caterpillar

Gm 12479665 Gear Set Diff Ring  Drv P

Case LP22E00020F1 Controller

Mopar R8481772AA R8481772aa

Sany 11498135 Sany Encourage Hydraulic Contr

Aftermarket AT113498 Shaft Pivot Left

4917966 Retainer for Caterpillar

Axletech A3204H1022 Hub Assembly Planetary

Oe Turbo Power D2013 Turbocharger Oil Cooled,

Komatsu 561-02-73120 Tube

Kalmar 887004.0400 Kit

Komatsu TY1625 Tube

Case YN30V00047F2 Valve

Komatsu TA7190 Gear Pl

Case 84478928 Tube

Case 84552253 Housing

Aftermarket AN260806 Structural Tube

Shyft Group Inc. 1907-FF1-801001 Cooler Charge Air

Muncie Power Products MPM RS6SP89M2P1PX Power Take

Komatsu GE1343 Bus Bar

1522918 Link G for Caterpillar

8N0943 8 N0943 Other Parts for Caterpillar

Hyster 1349989 Guide Lh Fork

Aftermarket EPC047342 Solenoid Hydraulic Valve

Komatsu R707-58-55720 Rod

WWS389433424 Power Cylinder Reaction Bracket Steel for liner

Art Industries C-2242 Coil Spring Conversion Kit Mercedes Benz

Case 87642811 Body

Donaldson A150162 Air Cleaner Assembly 15" Sst

808158OEM Differential Gear Set Gray, 19 Inner Tooth Count for PAI

Case 84790130 Arm

Komatsu 30E-15-12280 Pilot Boss

83703-SNX-A12ZA * for Honda

Agco AG715327 Cover

Komatsu 21T-62-69250 Tube

68217031AA Axle Housing for Chrysler

Liebherr American 944230903 Planetary Carrier

Holset 4038903H Kit,Fixed Geometry Turbo,Hx55 M

Liebherr American 10148667 Exhaust Mixing Pipe

Hydreco V0605AGB87L Rmt Cont Valve

Detroit Diesel RA0032509715 Lu Release Bearing Pneumatic

DA8Z7404320BB Panel Instrument for Ford

68164640AN Multi Media Radio for Chrysler

Square D LV431780 Circuit Breaker Type Nsx250 F 4 Pole

Roper Technologies 3622MBHFRV-13661-3A Roper Pump

Fabco 432-0695 Gear 25 Tooth Intermediate

Generac Power Systems 0D5210 Catalyst 4" Inlet  5" Out