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

6Y6055 Trunnion for Caterpillar

Dana 121787 Kit Whl Diff Case

Komatsu 159574 Body Spo

Meritor 6403221820 Disc Brake Caliper Maxxus Caliper, Rh

2149420 Guard for Caterpillar

Agco VA208039 Hitch

Turbo Solutions NHA1185 Turbocharger, X15 Actuator

Peterbilt 817094 Integral Knuckle Asy Rh

7M4835 Rod A for Caterpillar

Hitachi 9053745 Regulator

1282026 Ctwt for Caterpillar

4705308 Resistor As. for Caterpillar

Case 85813896 Body

Hyster 1518652 Plate Rear

Kubota RB519-72710 Assy Cylnder

Redneck Trailer D80865E4DZL0930074003 8 K 865 Elec Fsa 4 Drp Ez 93 Hf 74 Sc 5/8

Rex Roth 0-510-765-338 Hydraulic Gear Pump Double

Capacity 154292 Capacity Of Texas, Inc.

Agco 79033209 Pump

Komatsu 42C-70-11363 Collar

Case 84512543 Housing

Killer Tools ART402 Digital Aluminum Dent Puller

Aftermarket AT66265 Carrier Ay

Paccar S78-1175-9400AVC32 *

3690864RX Air Brake Compressor 1 Cylinder for Cummins

John Deere AL169971 Selective Control Valve, E

Aftermarket P60148 Maza Vaciada 38 P/Exportac

Vermeer 602018031 Piston 10 L1

Borgwarner 479030 Turbocharger,  Navistar Dt466/570, With Actuator

4355936 Clutch for Caterpillar

Hyster 4019777 Clamp Sonic Tg L3

Dana 513885 Differential Ring And Pinion 3.42 Gear Ratio, 17.7 In. Ring Gear

Stanadyne Diesel Corp 05314 Part

Dana RS404370CF Differential Carrier Rs404 Axle, 3.7 Gear Ratio, 41 Spline,

Dana RS404390CF Differential Carrier Rs404 Axle, 3.9 Gear Ratio, 41 Spline,

Dana RS404336CF Differential Carrier Rs404 Axle, 3.36 Gear Ratio, 41 Spline,

Nilfisk 01790132 Nilfisk Gm80 Hepa Vacuum 3 1/4 Gallon Cap.

Komatsu 88732940 Pipe

4L1343 Ring for Caterpillar

Hyster 2077166 Harness Main

Komatsu 3BA-24-31113 Axle

Meritor 3202A8815 Axle Shaft

Aftermarket AT190157 Plate

DC1-V1204 Poweredge Doc Volvo/Mack D13/Mp8  D16/Mp10 for Denso

Mcneilus 6HD913 Transverse Rod Asm Kit

Alliant Power AP90041 Reman Turbocharger, Maxx Force Dt

Komatsu 20U-06-21115 Wire

Aftermarket F058441 Valve Stack

5269013 Cylinder As for Caterpillar

9T0665 Cylinder As for Caterpillar

Axletech A65011573 Spider Assy Pla

3754713 Harness As for Caterpillar

Paccar P92-5921-010408070 Harness Ngp Chassis

Kenworth P92-4250-31324 Harness 76" Sleeper

Kubota Replacement 1J500-17011 Turbocharger

Aftermarket R124955 Exhaust Manif

Aftermarket 4209228 Oil Cooler

Aftermarket R65974 Shaft

Case 407254A1 Clutch

Aftermarket AT209038 Bellcrank

3151263 Support As. for Caterpillar

Axletech 3802X2000 Shaft Axle Fin

Komatsu 3EC-56-39110 Wiring Harness

Komatsu 334770R1 Gear

Espar 2028272102010Z Install Kit Air S2 D2 L 12 V *D

Agco 3784863M1 Plate

Aftermarket RE502886 Fuel Injection Pump

Dana 2114481 Spicer Highway Seal Hub Face

Doosan 421-00011A Valve Assypilot Control

83586-SEP-A01ZD Base L *Yr240 L* for Honda

83586-SEP-A01ZA Base L. *Nh167 L* for Honda

Alliant Power ap0152 Head Gasket Kit W/ Studs

2563502 Plate As for Caterpillar

Komatsu 22P-62-13410 Valve Ass'y

5380127 Bushing for Caterpillar

Komatsu 707-11-11C52 Cylinder Barrel

Aftermarket AT186065 Valve, Inlet Section

Fuller A5629 Cl Housing Assy

Dana 816102CH Spicer Highway Pin  Gear Kit

Aftermarket Z12191 Gear

Bendix R5004188 Air Brake Compressor,

Timber Jack Replacement F433460 Kit

Dana 2112547 Axle Shaft

Aftermarket RE64249 Fuel Injection Pump

Dayton Parts 674-2106 Hd Doc

1783989 Cartridge Gp for Caterpillar

Mopar 68661447AA Valve Bod

Meritor S4005001030 Trailer Abs Ecu Valve Assembly

Meritor 3892L5056 Drive Axle Planetary Hub Gear

Agco 512470D1 Kit

Dana 11106.710.02 Spicer Planetary Gear Carrier

Afe 402-0056-14 Bypass Shock Kit For Jk for Jeep

Dana 223.06.720.05 Spicer Highway Steering Case

Horton 99A9757 Engine Cooling Fan Clutch

4899846 Harness As for Caterpillar

DDER23537522 Mod Kit for liner

John Deere R129501 Housing, Brake Piston

Liebherr American 11002643 Pipe Fraction Safety Valve

Tadano America Corporation 27427012 A2 B Switch Kit Greer

Tadano America Corporation 94727427012 A2 B Switch Kit Greer

Hino 8955037192 Computer Emission Control

2829517 Plate Wear for Caterpillar

Kubota 67121-56324 Case,Front Axle Rh

Construction Equip. 32E2-10080 Safety Valve for Hyundai

Case 87576489 Mounting Parts

Paccar P92-5938-0B1601080 Harness Chassis 2.1 M

Case 73337332 Support

Diode Dynamc DD5167 Elite Max Led Headlamps For  F

Terex 15330505 Wheel Assy

Wirtgen Group 43357 Track Chain W4 Without T.P.

I Trac Undercarriage F32068A0M00025 Track Chain W4 Without T.P.

Dana 2113049 Spicer Highway Planet Carrier

Liebherr American 11656323 Switch

Detroit Diesel RA0024460135 Mcm2

MOD3S0527320000 Radiator Side Channel for liner

7T6657 Plate A for Caterpillar

Agco E670515 Printer

Komatsu 707-27-16902 Cylinder Head

Aftermarket 811967100 Spring Asm

Komatsu 921629C91 Bearing

Caterpillar 4503570 Edge Asm

Genie 94218GT Cylinder Jib

Bendix 107508 Tu Flo® 750 Air Brake Compressor , for Caterpillar

Case 317316A1 Pump

Case 86021464 Screen

7K7431 Hub A for Caterpillar

Liebherr American 11068110 Roller Single Flange

Rex Roth MHRB32NG10/D608GV11596184 Safetyvalve

Construction Equip. 32E1-10600 Safetyvalve for Hyundai

Construction Equip. 31E2-0001 Valve for Hyundai

Trp RF57330320 A/C Compressor

Dana 802587 Dana Spicer Drive Plate Kit