0050-10528船舶半导体工控备件主板供应

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

Brevini Riduttori 9020815 Bushing S1200/D270/../N38

Aftermarket AN276605 Wiring Harness

Titan 28005449BL Wheel Rim 25 14.00/1.5

Terex 15232597 Tube

Construction Equip. 81LC-40050 Wheel Rim Assy for Hyundai

Aftermarket R121688 Housing

Case 86634740 Roller

Liebherr American 9279843A Ep Cylinder Head Pre Asm

O  K Orenstein  Keppel Inc 461181400 Planet Gear W/Bearing

56038955AD Adaptive Speed Control Mod for Chrysler

67110-3102071 Hydraulic Pump Hydraulic Pump for Toyota

Ditch Witch Replacement 215-2767 Frame Harness

Fabtech FTS26099 Dirt Logic 2.5 Resi Coil Over Shock Absorber; Front; For 3 In.

Allis Replacement 71005131 Yoke for Fiat

HM5Z7804320AC Panel Instrument for Ford

Mopar 68472642AH Radio

Komatsu 76890773 Regulation V

Detroit Diesel R23528065 Turbo Assy

Carrier CDU 77 00274 11 Conr Kit Cm3, 12 V, W/Gri for Denso

Komatsu 707-11-70C70 Cylinder

Aftermarket AT261153 Shifter

Meritor E65012217 Transmission Clutch And Flywheel Kit Clutch Fin

Jost AX150.T.17 Landing Gear

Hyster 1477312 Support Outrigger Hsg

Case 76090663 Barrel

Dayton Parts 311-0022 Wiring Harness

Aftermarket F437051 Hydr. Cylinder Rod Guide

Komatsu 21K-27-33550 Carrier

5291685 Board Expans for Caterpillar

Construction Equip. ZGAQ-02237 Joint Universal for Hyundai

Hyster 1390897 Axle

Komatsu 6240-31-5360 Pulley

Komatsu 707-11-75770 Tube

Aftermarket AT194034 Counterweight

Komatsu 569-44-85710 Wiring Harness

Paccar 0818NLSSC Pb 125 Ss Alum, Step/3 Lcplt

Aftermarket AH133748 Tube

International 2602878C93 Cluster L/Hsg Blk E/E

Liebherr American 3001230 Corner Adapter Left

Spectra Premium 2101-3702 Radiator

Dana 238311 Spacer

Hyster 2307014 Scissor Rh

Replacement 9G0007 Replacement 9 G0007 Other Parts for Caterpillar

Peterbilt 6374773RX Kit, Turbo Actuator

Peterbilt 6382091RX Kit, Turbo Actuator

Western Star A22-75174-000 Dash Main

7E2607 7 E2607 Other Parts for Caterpillar

Paccar P92-5921-010408000 Harness Ngp Chassis

Dayton Parts 62-017 Leaf Spring

Komatsu SD1230-18812X0 Bracket Asm

Komatsu 707-11-75760 Tube

Graziano Axle  Related 3198593 Spindle Rh W/Hub

Construction Equip. 3198593 Spindle Rh W/Hub for Hyundai

Kobelco LC15VU0001S008 Gear

Case LR00747 Pipe Asm

Komatsu 21T-70-11310 Bushing

Vermeer 5569001 Hitch Pintle Ref C02347

Aftermarket F054153 Camshaft

Fox 88306157 2.5' C/O Remote Reservoir Shock Kit

Aftermarket 3016430 Cover

Bendix K147136 Disc Brake Caliper , Exchange Caliper

Wacker Neuson Const Eq. 1000130068 Boomset Cylinder

Aftermarket 825200500 Housing

Aftermarket 4010564 Housing

Paccar P92-5938-5GH261080 Harness 2.1 M Chassis

Vermeer 131026001 Shaft Seal Kit

Hydreco V4109DNDD80VS Con Valve

Komatsu 8296-70-6330 Cover

1287995 Plate Drm Dr for Caterpillar

Mazda BS6M67010B Harness Front

Aftermarket F011401 Housing

KA1Z5863804EA Cover Asy Rear Seat Cushion for Ford

Aftermarket CB11483496 Valve Stack

Dana 070TR129-1X Dana  Oem, Tie Rod Assembly, Steering, Front  Rear

AXTSA88550348 Steering Tie Rod End Assembly for liner

Komatsu 11Y-72-35131 Bracket

Case 87529844 Seat

Hyster 1652209 Lpg Tank Brkt Drop/Sho

Dana 233056 Dana Spicer Impeller

Link Belt 3D 0284 Carrier Secondary

Axletech 329501103A05 Case Diff  Ne

Fontaine SL7LWB675024 Full Assemlies Ds Handle Release

Komatsu 723-40-71300 Valve Asm

Vermeer 622325001 Base Rotary Cutter 18 P

Vermeer 622324001 Base Rotary Cutter 18 O

Vermeer 622323001 Base Rotary Cutter 18 N

Vermeer 622326001 Base Rotary Cutter 18 Q

Agco AG723284 Bearing 3.5 Double Rolle

Komatsu 57627740 Hose

6N9660 6 N9660 for Caterpillar

Ridewell 2600116 Rar 260 1 17 25 Osw

Dana 235214 Dana Spicer Impeller

Case 76090990 Steering Tie Rod End

Komatsu 78030373 Support

Wirtgen Group 2240290 Axle

Meritor ARV R9559111530197X Cu683/Xc2000 Comp Rm for Cummins

Case 87517841 Pto Asm Rear

FR3Z6362901BD Cover Asy Seat Cushion for Ford

67110-3145071 Hydraulic Pump Hydraulic Pump for Toyota

Peterbilt THP60009WEL Steering Gear Rebuilt

Peterbilt THP60066WEL Thp60 Steering Gear Rebuilt

22272586 Multi Purpose Wire Cable for Volvo

Case ND124802 Harness

Komatsu 92355640 Cable Ultimate

5816363 Cyl Hyd Gd for Caterpillar

Dana 2005750 Diff Carrier Dana 70 Loaded Trac Lok 4.56  Down; With Diff

Kobelco LQ02B01168P1 Link

Gardner Denver CV0022010000 Labyrinth850 Machined Complet

2312714 Harness As for Caterpillar

Borgwarner 479035 Turbocharger, Navistar Dt466/Maxx Force  7.6 L,

Liebherr American 9353248 Drive Wheel

Komatsu 41E-06-22230 Wiring Harness

Case 84140679 Track Asm

Roadtec 234682-01 Seat Paver Tier 4

Scania 1332903 Starting Motor

39460-SHJ-A11ZD Display *Nh220 L* for Honda

Comedil 833510016 Electrical Equipm Tq 2 Tq66102

Thermo King 42-2320 Thermo King

4V7528 Shaft for Caterpillar

Kobelco VAME999943 Kit

Komatsu 8221-60-1150 Valve Asm

Komatsu 844160125 Block Asm

Dcl International Inc. 7432-MV-1R06-21 fler Purifier for MUF

Paccar K068-6420-2 *

Case 79092643 Support

Case 2809591 Differential

Komatsu 3F4599062 Boom Swing Cylinder

Yukon YGK138 Yukon Complete Gear/Kit Package For F250/F350 Dana 60; With 4:11

Peterbilt EX225H201XX000 Caliper Svc Caliper Sho

Aftermarket LVA10044 Wiring Harness, Main

Car Certified Tools STBBE2.5GAL 2.5 Gal. Electric Brake Bleeder

Kubota RC348-72060 Kit, Piston