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

Kenworth P92-4250-61224 Harness 76 Sleeper

10R9391 Compressor G for Caterpillar

Mitsubishi 124 Handle,Mach

3501257 Support for Caterpillar

Aftermarket L111176 Support

GD9Z5427406JN Panel Door Trim Upper for Ford

Liebherr American 93029745 Shift Lever Left

Aftermarket F055134 Valve

Aftermarket AT206821 Bellcrank

Aftermarket AT306879 Compressor Sanden 5 H09

Link Belt R2M0080 Shaft Top

F4XY12043B13C Module for Ford

Case ND102455 Shaft

Case 87599849 Kit Rer for PAI

Komatsu 795-641-1120 Cap

Case 87543290 Transmission Housing

Stanadyne Diesel Corp 05872 Part

Mazda TK8567030 Harness Instrument

Agco 72648831 Valve

Mitsubishi 9461862030 Cylinder Asm Lift

Case V55505 Bracket

Hyster 1675344 Radiator

Rollway Bearing MCS5230903 Bearing

LNC94012 Lube Pump 12 V/3.5 A A for liner

Aftermarket AT39127 Rim

Hino 28100E0312 Starter Assy

Mack 23716196 Wheel Hub

Case 79099476 Link

1323546 * for Caterpillar

Hyster 4624303 Lift Cylinder, Rh

Hyster 1391378 Valve

Fleetrite RISB38490 Radiator International Fits

Komatsu 7826-31-2056 Kit

Mopar 4781507AD Engine Crankshaft

Komatsu 721-11-12921 Barrel Cylinder

Komatsu 22F-63-86121 Rod

International 2604698C98 Cluster L/Hsg Ivry Sp E/E 2010

Detroit Diesel DDE-A4710900955 3 2 Conv

2712579 Tube As for Caterpillar

Gm 15939015 Radio

Vermeer 63287001 Air Cleaner Stg12 0174

Doosan 2440-9325C Boom Cylinder Lh

Terex 2440-9325C Boom Cylinder Lh

Komatsu 209-06-62115 Wiring Harness

Case 2245082 Motor Hydraulic

5J9268 Bracket for Caterpillar

Akg Of America 3723.021.0000 Radiator / Cac Asm

Case 87802772 Housing

Komatsu 5067248 Oil Pump

Paccar P92-9343-013920 Harness Engine Isx15 2013

Aftermarket AT254801 Processor Micro

6W5814 * for Caterpillar

Aftermarket AZ54620 Hydrostatic Reservoir

Hyster 1498377 Control Column Cover

Aftermarket BCC10233 Brake Band

Chelsea 890EBFJW-B5XV Pto

Zillion Hd 1006A100A9552-2R M100 Fuel Pump

DW 170-025-0317 DW  Garrett Turbocharger Gt4082

Agco 71379903 Pulley

82208676 Radio for Chrysler

Dana 815258 RP

Aftermarket RE43922 Post

Trp RFM193R Led Clearance Light

Trp RFM193A Led Clearance Light

World American WA911-05-2581 Radiator Assembly

International 4307248R91 Trbochgr,Kit Turbocharger Rema

Case 76049954 Tie Rod

AL3Z1504320CA Panel Instrument for Ford

Komatsu 89106940 Plug Asm

Detroit Diesel DDE-EA4720503702 Cam Frame Kt

Komatsu 79233973 Pipe Asm

Komatsu 124-54-62822 Cover

2556534 Cylinder As for Caterpillar

Case 87460482 Tube

Hyster 0354123 Set Gear

Citgo 663706002027 Mys Jt 7

Case GI-117A *

F6HZ2320HA Multi Purpose Bracket for liner

Automann 170.955320 Abs Ecu/Valve Kit Type for Wabco

Commercial Intertech 347-9205-706 Valve

Mazda 1F7120500A Converter Cat.

Skyjacker F1545BKM 4.5 In. Kt 15 F150 4 Wd; Spcr; M95

TECHPRO-10 Tech Pro With Preloaded 10" Tablet for MAHLE

Komatsu 3F20A7055 Cylinder

Komatsu 17A-03-51491 Bracket

Komatsu 7831-64-5110 Plate

Case KG1SP044-00 Dia Kit Ce

Gardner Denver RSDMK30S Maint Kit  Platform

Case G100526 Rod

Paccar P92-5938-050700090 Harness 2.1 M Chassis

Kalmar 65302326 Antenna

Usa Standard Gear 35179 Usa Std. 4340 Chromoly Ax

Komatsu 9097436-30AM Bottom Roller

Bezares Usa 4110XEN751IB Power Take (Pto) Assembly Pneumatic Shifting,

Dayton Parts 674-2087 Hd Doc

Mcneilus 1110576 Manif Booster Cyl W/

Hyster 1504401 Control Valve Asm

Mecc Alte S16/A_762915S Alternator 5.5k Va 55/110 V 50 Hz for F-150

Komatsu 79360573 Pipe Asm

Kpi 224871 Blow Bar;4239 Hsi,U4 M27

Agco V836864742 Engine Control Unit

Terex 1107835 Housing Gear Machining

Mazda EH4567010E Harness Front

Terex 15307940 Servo Valve

2704172 Harness Asm for Caterpillar

Komatsu 417-U77-3101 Harness Wire

Vermeer 108959027 Cap Open Input

3982219 Harness As for Caterpillar

Hyster 0382276 Clutch Asm

4705486 Bus Bar for Caterpillar

Hino 3712037C00 Shaft Assy Propell

Fabtech FTS22311 Component ;

Dana 504085 Kit Gear Pin  Nut

Aftermarket AT264662 Hyd Actuated Control Valve

Mitsubishi 1141725 Load Kit Whl

Case YY01V00053R500 Rod

Case 84327734 Rod

Case 295881A1 Head Cylinder

Dana 2110310 Spicer Axle Shaft

Construction Equip. 2119B-00008 Valve Boom Hing 380 Bar for Hyundai

Warn 89611 12 Volt 10000 Lb Cap 100 Ft Synthetic Rope

 Warn 89611 12 Volt 10000 Lb Cap 100 Ft Synthetic Rope

Komatsu 21M-60-11401 Valve Asm

Kenworth 25RHS022B367 Driveline Assy

Komatsu VE6203 Valve

Skyline Emissions MN0405-C Diesel Oxidation Catalyst (Doc) Kit Includes 2

Stanadyne Diesel Corp 05710 Part

Case 84208534 Rod Asm.

Case 5181085 Body

Komatsu 56B-15-05001 Service Kit

Agco 2618811W91 Bulkhead

1942860 Barrel Gp for Caterpillar

Doosan D461110 Fuel Injection Pump

Rex Roth R902411840 Hydraulic Pump: Axial Piston

Case 76041137 Cable Electric

Fuller 16228 Mainshaft Gear

2743884 Rail As. Lh for Caterpillar

Komatsu 95091140 Connection Block

Icon 81521 Titan Xd 2.5 Rr Co Kt

57110-SNX-A62 Modulator Assy. Vsa for Honda

57110-SNY-M12 Modulator Assy. Vsa for Honda

57110-SVB-A62 Modulator Assy., Vsa for Honda

5291773 Pipe for Caterpillar

39542-TP6-R81 Panelassy for Honda

Yale 580061740 Fndr Wldmt

Hyster 1470998 Relief Valve

Paccar 36-00456-000FDN Pump Power Steering

2W0135 Adapter for Caterpillar

Case 8900127426 Rod

Agco 4304684M92 Assemble In Factory Housin

2173545 Plate As. for Caterpillar

Paccar A92-105928D001A000 Harness Chassis 2.1 M Vecu

Meritor A 3302S1007 Meritor Genuine Shaft Fr Drive

Dana 231075 Dana Spicer Valve

Komatsu 154-30-12540 Cap

Peterbilt 14-15282-118 Exhaust Pipe 4 In. To 5 In., Steel

John Dow Industries VFB1 Vehicle Fire Blanket

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Case 443063A1 Arm Asm.

Yukon YG DS110-488 High Performance Yukon Replacement Ring/Pinion Set For Dana

Yale 580022192 Harness Controller

Aftermarket AT57975 Housing

Paccar 2397567 Oil Module Mx13 Epa21

Kenworth 2397567PE Oil Module, Mx 13, Epa21

Yale 580025284 Lift Cylinder

Yale 580025538 Shaft Axle

Agco 6657913 Flywheel

Hyster 4628752 Wire Harn Pwrtn Bifuel

Bendix K109281SC004 Camera

Hyster 4143127 Control Panel

Dana N40312 Retainer (See 36.12)

Case 84419859 Plate Mounting

Case 87454870 Plate

Aftermarket 462 Cover

Carraro Axle 833655 Nut

Fabco 479-40-1 Shaft Input

68010518AA Am/Fm With Cd Radio for Chrysler

Liebherr American 11065964 Oil Cooler

Komatsu 134-01-62220 Shaft

Komatsu 17A-06-12570 Wire Harness

Apw International 92102-F2400 Lamp Assy

Hyster 1623235 Manif

1879666 Plate Asm for Caterpillar

Komatsu 421-07-31341 Wiring Harness

Hyster 1341403 Cylinder

Komatsu 5023237 Electronic Unit Maxi

Case 76032984 Valve Control

Komatsu 21K-27-39140 Carrier

Aftermarket BN202559 Mirror Kit

Horton 996711 Mag Force Fan Clutch

Bendix K109958X Air Brake Disc Brake Caliper

Aftermarket AL157145 Pneumatic Trailer Brake, S

Paccar 20RHM083B170 Inner Axle Slip

Horton 99A9254 Dm Advantage Fan Clutch

Westland WDV2200XCD Washer/Dryer Vented White Splendid

Detroit Diesel DDE-R23504966 Turbo S 60 T

Case 4966762 Drum

WABCO 4008673010 Pabs Ecu E8 C 12 V 6 S6 M Xbr Esc Atc Plc

Hitachi 3854360280 Valve;Flow Control

Aftermarket RE52822 Fuel Injection Pump

Komatsu 21T-70-11270 Bushing

Hitachi 91535-73900 Pump

FR3Z6362900HC Cover Asy Seat Cushion for Ford

Xantrex 8183015 dom Xc Pro 3000 Inv/Charger 3

Komatsu 6127-31-8101 Damper

5372541 Clevis for Caterpillar

Komatsu VF3736 Clutch Asm

Hyster 0294864 Valve Tilt Contr

Zf 4460-331-053 Cap Sealing

Construction Equip. 4460-331-053 Cap Sealing for Hyundai

10R8660 Water Pump for Caterpillar

Hyster 1632889 Valve

8211602230 Wire Engine Room Main for Toyota

2807145 Rail As. Rh for Caterpillar

Borgwarner 319494 Part

39542-TP6-Y71 * for Honda

39542-TP6-Y81 * for Honda

Liebherr American 10839704 Service Kit

Hyster 1353981 Shaft Universal Univer

3589992 Shaft As Dri for Caterpillar

Case 71476466 Valve Hydraulic

Meritor A4 3297R1604 Drive Axle Input Shaft Assembly

CT1Z14401A Wiring Asy Main for Ford

Case 76081069

Peterbilt A92-6126-6717G4002 Harness Abs

Comedil 832140021 Limit Switch 51/4 B/3 540 (B5)b

12100-P5A-000 Cylinder Head L. for Honda

2410030 Tee for Caterpillar

Gm 22958607 Caliper Asm Frt Brk

Meritor 3133H6534K Arm  Keys

Yukon YA WU-07 Spin  Locking Hub Conversion Kit For D30/D44 Tj Xj Yj 27spl

Komatsu 22U-06-21417 Wiring Harness

Aftermarket AT135944 Guard

Agco ACW179422B Armrest

Komatsu 600-821-8990 Xalternator

Aftermarket AH159999 Hydraulic Cylinder

Komatsu 21T-06-64980 Wire Harness

Aftermarket 3052851 Piston

Zillion Hd 1006A100A9298-6R M100 Fuel Pump

Autocar A3891202-001 Hydraulic Strip Cylinder Right Hand, 2 X 17 1/8 In.

ACDelco 86553006 Gear Asm Elec Belt (A)

Kenworth A33-1212-11126R Fairing Center Assembly

Hyster 1627422 Batt. Tray Weldment

Zf 4168-030-106 Torq Convertor

Xantrex 8183010 dom Xc Pro 3000 Inv/Chgr

Agco SNN28928 Housing

Atlas Automotive Equipment ATTC221-FPD Atlas Equipment Tc221 Rim Clamp Tire

Atlas Automotive Equipment ATTC221-FPD Atlas Equipment Tc221 Rim Clamp Tire

Aftermarket F051602 Rim

Hino 28100E0311 Starter Assy

International 5011017R92 Cluster,Reman, Cluster Ctr Blk

Mitsubishi 0329377 Levershaft As