福建中立恒自动化设备有限公司

目前，世界上有200多个厂家生产可编程序控制器产品，厂家有德国的西门子，美国的Rockwell(AB)、通用(GE),日本的三菱、欧姆龙，法国的施耐德等。

可编程序控制器总的发展趋势是向高集成度、小体积、大容量、高速度、易使用、高性能方向发展。具体表现在以下几个方面：

(1)向小型化、专用化、低成本方向发展

20世纪80年代初，小型PLC在价格上还高于小系统用的继电器控制装置。随着微电子技术的发展，新型器件大幅度的提高功能和降低价格，使PLC结构更为紧凑，功能不断增加，将原来大、中型PLC才有的功能移植到小型PLC上，如模拟量处理、数据通讯和复杂的功能指令等，但价格不断下降，真正成为继电器控制系统的替代产品。

(2)向大容量，高速度方向发展

大型PLC采用多微处理器系统，有的采用32位微处理器，可同时进行多任务操作，处理速度提高，特别是增强了过程控制和数据处理的功能。另外，存储容量大大增加。

(3)与计算机联系密切

从功能上看，PLC不仅能完成逻辑运算，且计算机的复杂运算功能在PLC中也进一步得到利用，从结构上看，计算机的硬件和技术越来越多地应用到PLC；从语言上看，PLC己不再是单纯用梯形图语言，而且可用多种语言编程，如类似计算机汇编语言的语句表，甚至可直接由计算机语言编程；在通讯方面，PLC与计算机可直接相连并进行信息传递。

(4)发展多样化

可编程序控制器发展的多样化体现在3个方面：产品类型、编程语言和应用领域。

(5)模块化

PLC的扩展模块发展迅速。功能明确化、专用化的复杂功能由专门模块来完成。主机仅仅通过通讯设备向模块发布命令和测试状态，这使得PLC的系统功能进一步增强，控制系统设计进一步简化。

(6)网络与通讯能力增强

计算机与PLC之间以及各个PLC之间的联网和通讯的能力不断增强，使用工业网络可以有效地节省资源、降低成本、提高系统可靠性和灵活性，致使网络的应用有普遍化的趋势。

(7)多样化与标准化

生产PLC产品的各厂家都在大力度地开发自己的新产品，以求占据市场的更大份额。因此产品向多样化方向发展，出现了欧、美、日多种流派。与此同时，为了推动技术标准化的进程。一些国际性组织，如国际电工委员会(IEC)不断为PLC的发展制定一些新的标准，如对各种类型的产品作一定的归纳或定义，或对PLC未来的发展制定一种方向或框架。

(8)工业软件发展迅速

与可编程序控制器硬件技术的发展相适应，工业软件的发展非常迅速，它使系统应用更加简单易行，大大方便了PLC系统的开发人员和操作使用人员。

可编程序控制器的输出信号类型可以是开关量、模拟量和数字量。输出单元从广义上分包含两部分：一是与被控设备相连接的接口电路，另一部分是输出的映像寄存器。

PLC运行时CPU从输入映像寄存器读取输入信息并进行处理，将处理结果放到输出映像寄存器。输出映像寄存器由输出点相对应的触发器组成，输出接口电路将其由弱电控制信号转换成现场需要的强电信号输出，以驱动电磁阀、接触器、指示灯等被控设备的执行元件。

以下链接皆有货

Nortek Global HVAC VCT-100 Natural Gas Infrared Radiant Heater 120V 100000BTU

NORTEL NETWORKS NTN438KA OM3500 2xGigE/FC COMPRESSION CARD

NORTH AMERICAN H3661-875 LINE SCAN SENSOR

NORTH AMERICAN H6400 ACCUSET CONTROLLER

North Orbit Blue 11M Big Air Free Ride Orbit Kite Surfing 2022

North Orbit CARVE Blue 9M Big Air Free Ride Orbit Kite Surfing 2022

North Orbit Red 9M Big Air Free Ride Orbit Kite Surfing 2022

Northeastern Exhaust Resonator Muffler Exhaust System For 1999-2000 Honda Civic

NORTHERN N-1000-III DOOR ACCESS CONTROLLER WITH CASE

Northern Pipe GPK Y23-0008 Non-Pressure PVC 8" DR-18 90° Elbow Fitting SEE DESC

Northern Pipe Prod. 164027 8"x22-1/2° Elbow ADSxADS SDR-35 PVC Green

Norton 10"x 1/16"x 5/8" B25N Coarse Grit Reinforced Cut Off Wheels 01/41

Norton 3x1/4x3/8" BlueFire Snagging Wheels 20 Grit 66253343872

Norton 5 x 1/4 x 7/8" NorZon Type 27 Depressed Center Grinding Wheel

Norton 66252917880 7x1/4x7/8" Type 27 Depressed Center Grinding Wheel

Norton 70184683613 Clipper Duo 14X.125 X 1"/20MM Segmented Rim High-Speed Blade

Norton 9-1/8" Dia X 7/8" Arbor 36 Grit RazorStar Fiber Discs

Norton Bear Tex Convolute Wheels Metal Finishng 6" x 1" x 1"

Norton Bear-Tex 16"x 2"x 10" 1500RPM AO Medium Grit Arbor Non Woven Flap Wheel

Norton Black Parallel Rigid Arm Door Closer PR7500-693

Norton Blue Fire Flaring Cup Grinding Wheel 6"Dia. 4-3/4" x 2" x 5/8-11"

Nortrac 66267 Hydraulic Heavy-Duty Tie Rod Cylinder 3000psi T30200609

Nortrac LH Series Tie-Rod Hydraulic Cylinder- 3,000 PSI 3 1/2in Bore 24in Stroke

Norwich Resistance Bulb Temperature Probe Switch MS28034-1

NOS Bottle Purge Valve Kit Assembly 16032NOS

NOT COMPLETE Progress Lighting Ceiling Fan 13.5 "x52" 3-Blades SEE DESC

Notifier By Honeywell PSE-10 Remote Power Supply Expander 24VDC 3 Input 7 Output

Nowak Products 75 Tooth Revolving Head Gear 5133 250MM OD

NRC PORT F-IM1 OPTICAL FIBER MICROINTERFEROMETER

NRP Jones 2" Male Hammer Union 1Y CPLG 1502-M32Y

NSA PureView Arc Flash Head Protection Kit, 12 cal/cm² SEE DESC

NSK 180mm ID 280mm OD 74mm W Straight Bore C3 Spherical Roller Bearing

NSK ESA-LYBZT15-11 SERVO DRIVE

NSK HTF22310CAG5M Spherical Roller Bearing

NTN 22220.EAKW33C3 Spherical Roller Bearing 100 x 180 x 46 mm

NTN 22220EMW33C3 Spherical Roller Bearing 100mm ID 180mm OD 2 Row

NTN 63 Series Round Bore Standard Deep Groove Radial Ball Bearing 6317ZZC3/EM

NTN 6901 C3 Radial Groove Ball Bearings 200B

NTN 7322BL1BG Angular Contact Ball Bearing 110mm Dia Bore 240mm OD 50mm W

NTN BEARING 6317LLBC3/EM / 6317LLBC3EM

NTN Double Row Tapered Roller Bearing 33213U

NTN Duplex Angular Contact Call Bearing Back-To-Back Arrangment 7328BX1L1BWGDB

NTN Premium Quality Heavy Duty Bearing 5583/5535

NTN ULF311-200 D1LJC3 Flanged Ball Bearing Unit 4-Bolt 5-1/2" C to C 2" Bore

NTN Ultage 22313EAW33C3 Spherical Roller Bearing 65mm x 81.30mm x 48mm

N-TRON 508TX INDUSTRIAL ETHERNET SWITCH

N-TRON 526FX2-A-ST INDUSTRIAL ETHERNET SWITCH

N-TRON 7018TX MANAGED ETHERNET SWITCH

N-TRON 716TX ETHERNET SWITCH

N-TRON 716TX INDUSRTIAL ETHERNET SWITCH

NUCLEAR ASSOSIATES 07-495 X-RAY TESTER

Nukor Aircraft FS 50 TF 5304000110 Screw Block For Belt Driven Compressor

NUM 48.0 PC BOARD MODULE FC 200 204 156 B

NUM BPH1154V5PA2C01 AC Brushless ServoMotor 480V Motor 13.3Nm 17.6A 6000rpm IP65

NUM SERVO POWER SUPPLY

Numatics N16451 4" x 10" Plant Air Cylinder 4D1A-687608-5

Nupla 30" Bolt Cutters Fiberglass, 1/2" Dia Steel, IEC 60900 ASTM F1506 6894332

Nut and Bolt Locking Plate 400 Series 5340-01-503-7087 820-6652791-7

Nutech SV2E-100F-100F 1"FNPT Brass Ball Valve w/Combination Strainer Valve600PSI

NVC 316 Stainless Steel Full Port 3" Ball Valve 1500 WOG 2 Piece

nVent Caddy 2" Rigid Pipe Clamp Galvanized RIGD0200EG

nVent Caddy 3/8" 1200lb Electro Galvanized Steel Beam Clamps BC17A000EG

NVENT ERICO LAC2QEE Welded Connection Mold, 4/0 AWG Concentric, Type LA

nVent Eriflex Insulated Braided Conductor IBSB Advanced 50-430-8-10

nvent Lenton Type P9 Position Coupler Plain #10 32mm EL32P9

nVent Single Entry Power Connection Kit w/Red Light Indicator 944699-000

NXP Audio Amplifiers TDF8546BTH/N1Z 45W Class-AB SMD/SMT Mount Type BTL

Nyloplast America 8" PVC Inline Drain Adapter 2708AG8S N2708AG SEE DESC

O Drive Botwheels Brushless Hub Motor Waterproof Connectors

O.M.O. Omo 60/35mm Mini Rolling Mill For Wedding Rings OM42091 SEE DES

O2 Concepts 14.4V Lithium Ion Battery 6.6Ah95Wh 4ICR19/65-3

Oatey 33929 3/4" x 25' 28 Gauge Galvanized Steel Hanger Strap

Oatey Fire Master Washing Machine Outlet Box SEE DESC

Octopus Autopilot Drives OC15SUK27D RFD Potentiometer Module T2 Simrad-Coursemas

ODE 1-1/4"FNPT 12VDC 18W Gas Solenoid Valve MD55N07C4B032-D07H

Odyssey Extreme Batteries 12V ODS-AGM42LMJA For 1991-1994 Alfa Romeo Spider Base

OEM  Eaton Char-Lynn Hydraulic Motor 105-1006-006 2000 Series

OEM  Holland Bosch Rexroth Hydraulic Gear Pump 0510725158

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OEM  Mopar Right Headlight For 2016-2018 Ram 1500 SEE DESC.

OEM 2003-2014 Volvo XC90 Brake Caliper Front Left Driver 30636354 AK2202455

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OEM 2019 Triumph Scrambler 1200XE Rear Brake Line Mod to Cal & Front M/Cyl-Mod

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OEM 2020 - 2023 FORD EXPLORER FRONT RIGHT DOOR LATCH LOCK ACTUATOR W/ HANDLE

OEM 2020 TESLA MODEL Y RD RH WINDOW REGULATOR 1526803-00-B

OEM 2020-2023 Ford 6.7L Power Stroke Diesel Fuel Injector LC3Q-9K546-AC

OEM 2020-2023 Ford 6.7L Power Stroke Diesel Fuel Injector LC3Q-9K546-AC SEE DESC

OEM 2130661013 JLG Front Dana 213 Axle Double Universal Joint Shaft for G10-55A

OEM 24' JLG 3890036 1200 Outer Mid Ret Rope

OEM 300 HP 3.0L Left Driver Turbocharger For 2016-2020 Infiniti Q50 14411 5CA1D

OEM 6.7L Ford Powerstroke Diesel Fuel Injector Feed Line Set LC3Z9B246ASUB1

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OEM A&I John Deere A-AL70272 Clutch Disk for 2550 2950 2955 Tractor

OEM A.O. Smith K Gas Valve Assembly 3/4" Natural Gas and LP 100187876

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OEM ACDelco BWI Rear Left Air Lift Shock For 2008-2014 Cadillac Escalade

OEM ACDELCO Front Driver Left CV Axle for 2005-2011 Cadillac STS SEE DESC

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OEM ACDelco GM Rack & Pinion Gear Assembly 25956915 For 2010-2011 HHR LT

OEM ACDELCO Torque Converter 24242693 For 2004-2012 Chevrolet Colorado LT

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OEM AGCO FENDT ACX3531670 Main Frame Wire Harness for Fendt RG935 934 937 Spraye

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OEM Allen Bradley VPL-B1153F-PJ14AA Kinetix Low Inertia Servo Motor 5000RPM

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OEM Allison Orscheln Electric Transmission Shifter P R N D 4 3 L 000-91260-0000

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OEM Altec Hydraulic Pump 035440034 354-40034 For ALTEC AT235P

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