福建中立恒自动化设备有限公司

一、摘要 PLC是一种专门在工业环境下应用而设计的数字运算操作的电子装置。

它采用可以编制程序的存储器，用来在其内部存储执行逻辑运算、顺序运算、计时、计数和算术运算等操作的指令，并能通过数字式或模拟式的输入和输出，控制各种类型的机械或生产过程。PLC及其有关的外围设备都应按照易于与工业控制系统形成一个整体，易于扩展其功能的原则而设计。在工业生产的各个领域，机械加工企业为了提高生产效率，采用机械化流水作业的方式，对不同类型的零件分别组成的自动生产线。随着产品机型的更新换代，生产线承担的加工对象也随之改变，这就需要改变控制程序，使生产线的机械设备按新的工艺过程运行，而继电接触器控制器系统是采用固定接线，很难适应这个要求。大型自动生产线的控制系统使用的继电器数量很多，随着PLC的应用日益普及,其使用方法简单,便于掌握,且可靠性,抗干扰性很强,自身具有完善的功能.模块化的结构,使其在工业生产线上的应用越来越广泛。

　　发展趋势：1.向高速度、大容量方向发展

　　为了提高PLC的处理能力，要求PLC具有的响应速度和更大的存储容量。目前，有的PLC的扫描速度可达0.1ms/k步左右。PLC的扫描速度已成为很重要的一个性能指标。

　　在存储容量方面，有的PLC可达几十兆字节。为了扩大存储容量，有的公司已使用了磁泡存储器或硬盘。

　　2.向超大型、超小型两个方向发展

　　当前中小型PLC比较多，为了适应市场的多种需要，今后PLC要向多品种方向发展，特别是向超大型和超小型两个方向发展。现已有I/O点数达14336点的超大型PLC，其使用32位微处理器，多CPU并行工作和大容量存储器，功能强。

以下链接皆有货

Pai 191938E Fuel Injector Camshaft 43.13in Long Isx Application for Cummins

Aftermarket DC41469 Quick Coupler

Vermeer 163673614 Harness Wc2500 Xl Rear

5318522 Rod As Reed for Caterpillar

1121378 Spacer for Caterpillar

5322586 Cable for Caterpillar

Komatsu 421-15-12670 Ring Gear

XC4S14406BA Wire Asm Fu/Tnk Sdr for liner

Komatsu 569-15-51162 Housing

Delco Remy 8600473 Alternator 55 Si Model, 12 V, 420 A, 5/16 B Output

Komatsu 1259980H91 Sweeps Lh

Chelsea 524XTASX-V-XK Power Take (Pto) Assembly 524 Series, Mechanical

85000396 Compressor, Exch for Volvo

Hitachi 62N831-11000 Bucket Cylinder

5299348 Retainer for Caterpillar

Timber Jack Replacement 843152700 Hub

Chelsea 282XKAJX-V3RF Power Take (Pto) Assembly 282 Series, Power Shift

Vermeer 180021097 Winch Hydraulic Asm Lhc

Yale 080501200 Tank Vacum

Yukon YGK2153 10.5in. 4.11 Rear Ring/Pinion; Install Kit; 35 Spline Po for Ford

Yukon YGK2154 10.5in. 4.30; Rear Ring/Pinion; Install Kit; 35 Spline P for Ford

Yukon YGK2155 10.5in. 4.56 Rear Ring/Pinion; Install Kit; 35 Spline Po for Ford

Yukon YGK2178 11.25in. Dana 80 3.54 Rear Ring/Pinion; Install Kit; 35 Spline

Yukon YGK2167 11.25in. Dana 80 4.11 Rear Ring/Pinion; Install Kit; 35 Spline

Mitsubishi 1860C032 Control Unit Eng

Peterbilt A33-1132-2201950 Truck Fairing Center

DW 170-025-0375 DW  Garrett Turbocharger Tc4305

Case 87614591 Cooler Oil

Case 86637153 Plate Asm.

PH Crane 77R26D1 Collector Ring

Dana H738-196-5 Dana Spicer Gear

Aftermarket 4223841 Spool Valve

Mazda CC4367010E Harness Frt

Roadtec 250912-03 Elec Two Axis Joystick

Dana 2115592 Set Drive Gear  Pinion 53 R

Case 76037737 Cable Electric

Aftermarket AT20372 Shaft

Alliant Power AP63578 Exhaust Gas Recirculation (Egr) Valve

Rex Roth R933009571 Hydraulic Manif Main Control

F6HZ6096N Multi Purpose Bracket for liner

Aftermarket F048427 Valve

Alliant Power AP90033 Reman Turbocharger, Cat C15 Low Pressure

Komatsu 6165-11-5320 Manif

Komatsu 6165-11-5310 Manif

Komatsu 76629273 Valve

Caterpillar 3386012 Tube Asm

Schaeff 5364656225 Valve Override

Case 72282492 Hydraulic Cylinder

Peterbilt SK75013-11 Kit Major Rebuild 37010

Zf 4461-301-167 Differential Case

2752319 Kit Dt Beari for Caterpillar

Komatsu 42C-01-11234 Tube P60

American Forge  Foundry 819SD 20 Ton Body Rer Kit Sd for PAI

Komatsu 22B-62-21331 Valve Asm

Mitsubishi 8631B158 Control Unit Eng  A/T E

Komatsu 1209992H91 Pump

Heavy Motions HT6DCMB45B281L Double Vane Pump

39050-SDN-A70ZA Module Assembly, Center *Nh482 L* (Black Metallic) for Honda

Dana 693912 Beam Axle 3.5 In. Beam Drop, Lightweight

035-17635-0 Cylindrical Roller Bearing 270mm Od for Denison Hydraulics

Meritor A3261H86 Meritor Genuine Air Brake Wheel Cylinder Assembly

Komatsu 29300 Sawbar Mount 3

Sheppard M80SAW Gear Asm Steering Dual M80

Agco F6125103P Chain Right

Generac Power Systems G074654 Transfrm 600 V To 240 V 500 V

Meritor 3297Y1247 Transmission Output Shaft

Fairfield Manufacturing Co 3400720 Spindle

Dana 128358CH Brake Drum

Muncie Power Products SH8BU6807E1KX Muncie Pto

Terex 3.444-00005 Rod Ass'y

Detroit Diesel DDE-EA4720503802 Cam Frame Kit

Dana 510118 Differential Ring And Pinion 3.70 Ratio, 15.75 Gear Size, 37 Ring

4527248 Clevis Finis for Caterpillar

4761656 Retainer for Caterpillar

Hyster 2799247 Body

Komatsu WA6536 Pres Con

BRP-7532 Set,Gear for PAI

Aftermarket F437438 Control Valve, Side

Hyster 1476942  Control

001TC23576000 Turbocharger for MAHLE

Dana 6-1-6311X Cv Joint Companion Flange

18160-RRC-000 Converter Comp for Honda

Borgwarner 53169886727 Turbocharger

Link Belt 997-070-14565 Cable Harness

Komatsu 683326C1 Elbow

Kenworth P92-5177-0320700 Harness Fr Chassis Under

Case 73329026 Suspension Block

2737232 Bit End Rh for Caterpillar

2737233 End Bit Lh for Caterpillar

Brevini Riduttori 0X008624W60 Winch Wlr602/Tl01/213/Fl3.8 M

Liebherr American 10316134 Butt Strap

Tramec Sloan 451039NP Coiled Air Display , 15' Assemblies With 40 Lead

Koehring U357E2528 Band Main

Komatsu 51610498 Hose

Caterpillar 0773783 Pump Hyp

Kalmar J017267 Cpu [Cpu315 2 Pn/Dp]

Liebherr American 10148672 Exhaust Mixing Pipe

Case 87657353 Rim

Meritor LRG616 aliper Lh

6T1177 Shaft for Caterpillar

Dana 070HU140-X Assy Hub  Rotor Wheel (Ca)

Case 76093600 Kit Air

Schaeff 6501089011 Rod Piston

Oe Turbo Power D91080013R Turbocharger Oil Cooled,

Go Industries ET005 19 20 Chv Wld Wnch Gg No Carrier

Case 85807613 Control Unit

Link Belt 9A 0768 Cplg 7.75 Odx5.7910 Idx6 Lg

Bendix 106439 Bx 2150® Air Brake Compressor , Engine Driven,

Hyster 1533566 Piston Rod

2065157 Cylinder Asm for Caterpillar

Mercedes Benz A2044908320 Exhaust Line

Brevini Riduttori 9003879 Pinion Ss400/Z11 M22/../W42

Komatsu R6212-61-2112 Oil Cooler

8211108230 Wire Engine Room Main for Toyota

Meritor LRG617 aliper Rh

Husqvarna 52301 Assy Bladeguard 36 X3

Komatsu HF28752 6 Pk Filter Hyd

Komatsu ND246470-1610 Wiring Harness

Generac Power Systems 0D3617K Ct 2000/1 A 2 X 5.25 In Wind

OE Turbo Power D95080004N Turbocharger Oil Cooled,

Peterbilt 5002266-3116 Driveshaft

International 3703686C2 Control,Computer Anti Skid , B

Parker Hannifin 364238 Piston

Meritor A416721 Meritor Genuine Differential Gear Set

Peterbilt M100PRH3RMAN Gear

HM5Z7804320CC Panel Instrument for Ford

Mercedes Benz W164589032300 Adjusting Gauge

Kalmar 803801690 Steering Valve[K0808001 H]

Danfoss 150N0046 Steering Valve[K0808001 H]

Liebherr American 9825331 Wiring Harness Pump

Mitsubishi 0976156 Diff Gp Basic

Agco AG334950 Housing