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

Dana 817246 Knuckle Lh

Aftermarket F306715 Check Valve

Manley Performance 190858B Crankshaft 4.000 Ccw 58 T Reluc

Paccar 1840166 Back Pressure (Bp) Valve Straight, Mx13, Epa10

Mitsubishi 1460A095 Pump Asm Fuel Injection

Komatsu 161487 Valve As

Mack 8235-S9111530550X A/C Compressor Single Cylinder, 318 Cc,

Aftermarket AU41587 Arm

DW 170-070-0198 DW  Borg Warner Turbocharger S3 Bsl102

Mcneilus 1528331 Pto Chelsea 877 Xkfjp M3 Xv

Case SBA330201420 Shaft

Komatsu 93931 Tube Wld

Kobelco YN59S00039F1 Gauge, Cluster

Hitachi 4377487 Valve Solenoid

Dana 111.04.500.08 Spicer Highway Bevel Gear Set

5380466 Collar for Caterpillar

Hyster 1518041 Harness Operator Compa

Komatsu 1438576H92 Joint Double

Dana 244223 Dana Spicer Pump Charging Assembly

Aftermarket RE50567 Control Console

Gm 89040573 Gear Set Diff Ring  Drv P

Hyster 1371793 Window Front

Aftermarket R118067 Extension

Chelsea 272XBAJX-A3XD Power Take (Pto) Assembly 272 Series, Power Shift

Rex Roth MHRB32NG10/D619EV11-011 Valve

Parker Hannifin E-129453 Proto Block Ic 7349 Po Check

Commercial Intertech 356-9102-319 Valve Regen 1000 Psi

2872661RX Fuel Pump Cap for Cummins

Husqvarna 510018603 Electronic  Main Plc 250

Epec E30B2024-20 Electronic  Main Plc 250

Aftermarket AH143311 Hydraulic Cylinder Barrel

Dana 126721 Differential Case Kit Flange, Half Case

Agco AG309724 Drive

Komatsu 21N-06-32262 Wiring Harness

Aftermarket AZ52320 Hydraulic Cylinder

Komatsu 6209-31-1430 Pulley

HDC010141DT Radiator Copper Brass for Volvo

Komatsu 79244273 Tube

Hino 82121E3170 Wire Engine

Aftermarket AT304412 Wheel Assembly

Mcneilus A5634 Pump 37.5 Gpm Dir Mtd Ccw

2254658 Valve Gp for Caterpillar

Kubota 7J041-95102 Parts  La402 S Fl

Aftermarket AT321430 Shaft

Case 397407A1 Kit

Horton 99A9750 Engine Cooling Fan Clutch

Mcneilus 0128322 Camera B/W Shut/Htr Intech

Komatsu 707-88-38470 Cover

Peterbilt 798162RMAN Clutch Reman Dma 2 Speed Paccar Px8

Case 75249883 Cable Electric

Wacker Neuson Const Eq. 1000186528 Pendx 1000276972 Cylinder

Case 86632258 Plate

Komatsu 708-8H-13432 Cam

Koehring 359D6504 Shaft

68270672ZH Multi Media Radio for Chrysler

Liebherr American 94017466 Pin

Fuller K3716RX Transmission Control Module , Exchange

Hyster S00976310071 Tube, Exhaust

Rex Roth MHRB32NG11/D608GV11 Valve

Construction Equip. 31EE-60010 Bucket Cylinder for Hyundai

Liebherr American 10665266 Line Filter

Martec 89MX262256 Lift Gate Pump Lift Gate Pump

Chelsea 210XMMFP-X2SD Power Take (Pto) Assembly 210 Series, Power Shift

Ford GA8Z7404320AB Panel Instrument

Agco 72201938 Brake Kit

Hyster 6990483 Housing Rh

20R7296 Compressor for Caterpillar

Paccar 4261D05A023 *

Komatsu 621438C95 Idler Asm Front

5374290 Filter for Caterpillar

6D7476 Shaft for Caterpillar

Euclid E4049105 Tube Asy

Case 85824222 Valve Control

Case 87574331 Tube

Case 87685087 Rod

Case ND126670 Plate

Tadano America Corporation 32951140 Pin

Tadano America Corporation 94732951140 Pin

Hydraforce Inc HF44850-08 Valvelis;285 K

Generac Power Systems 062245A256 Camshaft

Horton 99A7202 Engine Cooling Fan Clutch

Terex 26669016 Linear Position Sensor

Chelsea 272GGAJX-A3RK Power Take (Pto) Assembly 272 Series, Power Shift

Schaeff 5018001106 Blade

Hyster 4021734 Bearing

Hydreco P2AP2210/1606A289 Pump

Aftermarket F125161 Switch, Foot Pedal

Vermeer 90048001 Valve Relief

4757867 Tube Weldmen for Caterpillar

Schaeff 6151718102 Adapter Kpl.

Daemo B23490070 Assembly Control Valve Bt4000*

Aftermarket R118068 Extension

Hyster 1499350 Harness Cab

Mitsubishi 0913945 End

Fox 88306178 Kit: 05 On Tacoma W/ Uca F for Toyota

Danfoss 156B8412 Valve Section

Hyster S01366420025 Wire Harness

Peterbilt 79A8121RMAN Clutch Fan

Case 79114388 Tie Rod

Komatsu 419-62-23580 Tube

Case 84188762 Dia Kit Harvester

Peterbilt HDC010093SK Rad Assy

Chelsea 281GBFJP-B5XD Pto Assy

Terex 15504533 Spindle

Komatsu 1261115H1 Gland

Akg Of America 0266.002.2000 Brake Cooler

6KL77LXHAA Multi Media Radio for Chrysler

68258383ZI Multi Media Radio for Chrysler

Doosan 4474-353-056 Output Shaft

Vermeer 506250519 Monitor Elect Automatic Re

Case 277127A2 Harness

Hyster 2013814 Piston Rod

Agco AG524260 Kit

Groeneveld Group F600768 Grease Pump Asm Pneumatic

Case 87732777 Housing Bearing

Aftermarket 0251302053 Pinion Shaft

Euclid E12621905 Wire Harness

Hella 012865451 Headlight

Kobelco YN22E00751F2 Controller

Peterbilt 07-06649 Tie Rod Radiator

Mecc Alte T16F-130_0260671K Alternator 6k Va 230/400 V 50 Hz 3 Ph

Mecc Alte T16F-130_0260667K Alternator 6k Va 230/400 V 50 Hz 3 Ph

Komatsu 56667640 ze In Bush

641334 Exhaust Gas Recirculation (Egr) Cooler Detroit Diesel Series 60 for PAI

Zf 4657-371-017 Shaft

Leece Neville 4740JB Alternator

Liebherr American 9104576 Piston Rod

Case 393189A3 Post

Mitsubishi 0394692 Lever As Axle

International 4029315C95 Light,Head , Led Composite, Lh

Komatsu 79200873 Harness

Dayton Parts TRA-3519 Leaf Spring