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。

Square D Transformer 0.35 - .05 kVA #8641

Aero-Motive 5-F Tool Balancer 5lb Capacity # 13105

Flex I/O 1794-IV16 SOURCE INPUT:10-31.2VDC, 11ma, 1794-IV16 #6982

PMA 3ft Flexible PMA-CYLT-17B Conduit w/Fittings VW VN #9985

Phd CTS1U12X1-BB-I Guided Cylinder #9109 / 9201

SMC EX600-DXNC Digital Input 2A 8 point 24VDC Class 2 #11766

SICK WL12-2B560 Photoelectric Sensor #12133

Fleetguard AF883 Air Filter #100428

Manitowoc Mot Block 7"x2"x1" #7440

Square D Circuit Breaker 3A 3 Pole FAL3600311M #6396

SPUSR/010F0018 Norgren Hydraulic Cylinder #140130037

60590-0100 STI Transmitter Cable 10 meter 5 pin #8069

27 - Everbrite WHITE LED Bare Rigid Light Strip Board 600-0519 #12240

Festo Pneumatic Cylinder ADVU-80-210-P-A #2502

Haskel Air Pilot Switch 3/31572-4 #3464

Straight through fitting Brass Coupling #13029

Brass Straight Through Coupling Fitting #13022

Euclid Radiator Mot Heavy Equipment truck E4019804 #7214

NCS-6030-R Nanaboshi Connector SIZE 60 30 pin #7988

Four Seasons 35511 Blower Motor # 10492

Fuji Electric Temperature Controller PXZ5TAY2-0Y000 #2923

Time Monitor Circuit Board T-2A #6759

PX319-100GI Omega Transducer 100 psi #7593

Festo HGR-16-A Parallel Gripper #3638

SMC CXSM25-30 Dual Rod Cylinder Slide #10220

Komatsu 106676 Ball Bearing #10980

B-33107 Accu Sort Photoelectric Sensor #8441-C

Brad Harrison 803P401 4-port Multi-Port w/ Cable #12057

SS-4BK V51-1C SOLS Nupro Bellows Valve Stainless Steel #7789

Omega PX319-30AI Transducer #7750

33- phoenix contact mbkkb 2,5 mini feed-through terminal block lot #12417

995-0024-00J Action Pak with Module 995-0024-00J #8175

SMC EX600-DSNB 8-points Digital Input #11767

SMC AW30-03 WITH E8F2-B10C #6297

Gates tr32491 drive belt 23a1250  # 11981

LC1k09 Mini Contactor #100394

Pneumatic Cylinder PHD A3VR 3/4 x 2 x 1 7/16 #9204 / 9249

331 Noshok 3.00 2000 psi Filled Pressure Gauge Germany Brass #9220

PHD Cylinder 03861762-01 A3VR 3/4 x 2 x 1 7/16 #9029

SMC MHZ2-25D Parallel Gripper Pneumatic #12114

Siemens 6ES7 322-1HF10-0AA0 Simatic S7 Output Module #12966

Norgren P72F-3AC-NNN Pneumatic Valve #7885

Mac Valve Solenoid Valve PME 504DABE #2515

CAT / Caterpillar 2T-1368 Fluid Carrier Tube A #12679

SMC CXSM20-100 20mm Bore 100mm Stroke Guided Pneumatic Cylinder #11722

Kabelschlepp Moting Bracket 52627 #7911

8lb Lot Machine Screw #8-32x1-1/2" Phillips / Slotted Combination Drive #9935

Cole Parmer Acrylic Flowmeter FR5A53PV-CP #7694

Numatics 082SA415M019M61 150 PSIG Valve #8248

Fleetguard AF25126 M Air Filter #10285 / 11418 / 11420

Purple Nylon Utility Rope 1/2" x 100ft Atwood Rope Mfg #12938

67 - Idec BN15MW Terminal Blocks LOT  rail #4987

Square D Contactor 9065 TR 4 #8737

Festo MT2H-5/3B-4.0-S-VI Solenoid Valve #9454

SX DPX-610A-IN Digital Pressure Sensor #9080

Parker PS2982C53P Solenoid Valve Kit  # 12710

Festo MT2H-5/2-4,0-L-S-VI-SA Solenoid Valve #11233

Keyence OP-87625 Sensor Cable #10767

SMC ZSE40A-N01-X-P Digital Pressure Switch # 11773

SX DPX-610A-IN Digital Pressure Sensor #11742

PHD 17524-source-pnp Proximity Sensor Switch #12351

SMC 2SE40A-N01-X-P Vacuum Switch #11735

TAC Xenta 282 Controller #8406

SMC EX250-SDN1-X102 INTERFACE IT DEVICENET SI it #8937

Tri-Tronics SEI EDR Smarteye Mark II Sensor #9359

Tri-Tronics SEI EDR Smarteye Sensor #9358

Festo LFR-1/2-S-B Filter Regulator 200 PSI #11560

Festo LFR-1/2-S-B Filter Regulator #11559

Caterpillar CAT  Pin  in Package 8C-0400 #5278

9080GCB05 Square D Circuit Breaker Assembly #8721

Fleetguard AF25672 Air Filter #100338

Fleetguard Air Filter AF25672 #100339

Machine Tool Wire E83039 18 AWG 16 strand green stripe 451ft #12653

PHD CTS series Rod Cylinder CTS1U20X11/2 #9086

burkert flnsch-f-318-066843u easy fluid control system #4474

Siemens 1/2A DC Output Module 505-4532 #8661GHI /8663-I /8664GHI /8665GH /8666H

1  Siemens 1/2A DC Output Module 505-4532 #8661GHI /8663-I /8664GHI /8665GH /8666H

AIE 4" Impulse Sealer AIE-100T #9394

Manitowoc crane care Mot Block #7438

Hoffman Concept Panel LP2016 #8449

Siemens 505-6851A Remote Base Controller #8665-B/8666-B/8667-B/8669-B/8671-B

1  Siemens 505-6851A Remote Base Controller #8665-B/8666-B/8667-B/8669-B/8671-B

Euclid-Hitachi Strainer E12595395 #7400 / 7390

Bussmann FRS600 Fusetron Fuse Class K5 600A Dual Element Time Delay #10092

euclid hitachi e4006264 sleeve #7347

GE Fanuc IC693CBL300B EXP BlackPlane Cable #9460

SMC CXSM25-75-Y59A Guided Slide #9169

Euclid Hitachi Light Switch white E4040710 #7367 / 7388

25 -Everbrite Electronics 710-0360 WHITE LED Bare Rigid Light Strip Board #12242

25 - Everbrite Electronics 710-0360 LED Bare Rigid Light Strip Board #12241

Komatsu 1279445H91 Diode # 10618 / 11016

Komatsu Dresompany KDC Parts Switch T Part Number 135296 #11110

SMC CXSL15-30 Guided Pneumatic Cylinder #11725

37 - Gusset Bracket Assortment Lot  #100434

Omron 6" x 6" x 6" Amplifier it  #6572

Stuwe Inner Frictional Connector IS 1 25x50 #140130059

Metal Shelf Support Pegs / Pins - Bulk - 5lbs Push-in Shelf Support #9656

CAT 4N-3899 Switch A #4702 Genuine Caterpillar

Fleetguard Air Filter AF25136M #10280

EGS Sola/Hevi-Duty SLS-24-012t Regulated Power Supply # 2999

dearborn e-11755 hook-up wire 22 awg blue 500ft #12640

Festo MT2H-5/3E-4.0-S-VI Solenoid Valve #9452

Valco Heater Cartridge 110VAC, 100W  I-21208-05 #7697

Valco Heater Cartridge 110VAC 65W I-21208-32 #7698

17 Assorted CAT - Caterpillar Seal / Gasket / O'Ring LOT #11096

25 - CompX 171E Timberline Silver Lock Core w/ Keys LOT #9759

15 - Compx Timberline 119E-B Lock Core with 2 keys LOT #9599

 Dadco 180-25 Nitrogen Spring #9277

Impulsive Sealer American INT'NL Electric 4" AIE-100T #9399

Fleetguard Air Filter AF26181 #100355 / 100354

Donaldson P166446 Filter #11423

6 - Dupont TyVEK Coverall Ty120 Zipper Front XL Lot #12916

Novotechnik Linear Transducer #2793

D-Link DSH (DSH-32) 32-Ports External Hub #2777

5LS1-JEC Yamatake Limit Switch Control  Type AGA  #3614

Numatics R22R-04 Regulator 1,000psi #7143

Tescom 44-2213-241 regulator 3500 psi #12512

Dearborn E56609 22 AWG White Style 1015 500FT # 12647

Crouse-Hinds T39 Condulet Outlet Body w/ 390 Cover #9969

Motz Torque Screwdriver 3-190 ozf.in #8347

SMC Solenoid Valve VZS2150-5MZ #3136

Supelco Injection Sleeve .75mm ID 2-6375,05 #7680

KYOCERA KST-80-6MPD4-ZB2 Thermal Print Head #9473

Numatics Actuator AEBG-00M3B-AAA0 #9044

Volvo 110414 Air Filter  #100419

SMC Solenoid Valve Station VQ1141-5LO-C6 #6522

Bosch Rexroth R165379420 Linear Ball Rail Rner Block #10314

1  Bosch Rexroth R165379420 Linear Ball Rail Rner Block #10314

Patlite BC-120LH Signal Ph#10338

Square D Pneumatic Timing Relay class 9050 TYPE A0-20D SERIES A #7113

ASCO Solenoid Valve Coil Assembly MP-C-086 #4389

Heraeus G 1600W 230V Infrared Replacement light bulb #4893.2