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

SURPLUS ALLEN BRADLEY 1769-OF4CI 4 CHNL ISOLATED OUTPUT MODULE

SURPLUS ALLEN BRADLEY 1794-AENTR / A FLEX ETHERNET/IP ADAPTER

SURPLUS ALLEN BRADLEY 2711P-T6C21D8S PANELVIEW PLUS 7 OPERATOR INTERFACE PANEL

SURPLUS AYDINDISPLAYS FPM-154T OPERATOR INTERFACE 15 " SCREEN

SURPLUS LENZE 8400 E84ATCE1134VX0 CONVERTER INVERTER DRIVE

SURPLUS LENZE 8400 E84AVTCE3714VX0 FREQUENCY INVERTER DRIVE

Surya 6' x 8' Sheepskin Area Rug SHS9603-68 Brown W/ Purple Tint Hand Crafted

 SUS America SIO Series N3 Controller Si0-N3

Suspension Strut and Coil Spring Assembly Front Left FCS 5333406L

Suzhou Fufeng Goup Communications Connector FF0232, 17046627-03

Suzhou Fufeng Group Communications Connector FF0227, 17046624-04

Suzhou Fufeng Group Communications Connector FF0229, 17046626-03

SVF Flow Controls 1/2" 3 Pc Locking Instrumentation Ball Valve Compression Ends

SW Hinge Pin R-30160612 12-1/2"L

Swagelok 6mm Elbow Union SS-6M0-9-4 Stainless Steel Tube Fitting

Swagelok Bellows Valve High Temp SS-8UAW-TW-HT-4179 Stainless Steel 1/2" ID

Swagelok SS-2400-1-24 316 SS Tube Fitting Male Conn 1-1/2" Tube OD x 1-1/2" MNPT

Swagelok SS-83TS6-LH SS83TS6LH SS High Pressure Ball Valve PTFE Seats 1/2" Tube

Swann 1080p Wire-Free Outdoor Security Camera SWIFI-CAMWPK4-GL - White

Swann Pro Series 1080p Outdoor PTZ Dome Camera with Night Vision SWPRO-1080PTZ

Swift Metric Coilover Springs Z60-178-100 60mm (2.37") DIA x 7"

SwingMaster Claw Cylinder Hydraulic H-600 H600B1114

SwingMaster Claw Cylinder Hydraulic H-600B0779

SYLVAC E25S CONTROL MODULE

SYMBOL DS3578-DP2F005WR BARCODE SCANNER

 SYMBOL MC906R-GK0HBEER5US WI-FI MOBILE COMPUTER BARCODE SCANNER

SYMBOL MC9090 MC9090-GJ0HBGGA2WW BARCODE SCANNER

SYMBOL MC9190-GJ0SWGYA6WR BARCODE SCANNER NO BATTERY

SYMBOL MOTOROLA MC9190 LCD DISPLAY, MAINBOARD, 21-92955-01 WI-FI

SYMBOL PDT6846-L26643US HANDHELD BARCODE SCANNER

SYMBOL STB3578 STB3578-CF007WR BARCODE SCANNER BASE CHARGER

Symbotic 410-02774 Symbot ECU

SYNCHRO TAPPER UC-27U CONTROLLER

Synflex 45J0 Brass Short Hose Guard Kit, For 3/16 in 3VE0-03, 3V10-03 Hoses

SYNTHES 690.572 BATTERY POWER LINE ATTACHMENT RACK

SYNTOPTICS LATTISHUB 2814SA 393E75

T & S Brass Pre-Rinse 8" Wall Mount 14" Swing Nozzle Chrome SEE DESC

T&B 3/8" Straight Liquidtight Connector Typea Conduit Iron 3720-TB

T&S Brass 5EF-1D-WGAT Equip Sensor Faucet Wall Mount 4-1/4" Spread Gooseneck

T&S Pre-Rinse 8" Center Faucet w/ Add-on 12" Neck B-0133-12-CR-B

T.B.S Manufacturing 2" x 6" PVC Sch 80 TBE Nipples Gray 820060

T.D. Williamson 06-9541-0000-00 Shortstopp Weld Tee 4" x 6" Type IIA SEE DESC

T3 Trilogy Alarm Lock DL3500CR Digital Mortise Lock Classroom Satin Chrome

Taco 009-SF5 Stainless Steel Flanged Cartridge Circulator 00 Series 1/8 HP 115V

Taco 2" Stainless Steel Pump Flanges 1600-032S For NSF 1600 & 1900 Series Pumps

TAGNOLOGY INTELLIGENT SIMATIC RF680A ANTENNA

TAIYO 1FA50S35N15-AO HYDRAULIC CYLINDER

Taiyo Parker 140H-8 Nominal Press Hydraulic Cylinder 1FY125BB50-BC-X

TAKAOKA ELECTRIC MFG CO PEA000797 PC BOARD ASSEMBLY

TAKAOKA PEA000805 PC BOARD

TAKEX LASER PROJECTOR LDU163L11

Talon Metering Socket 64558-01M-AL Meter Block E62827

Tamagawa Quin Tep 5 Phase Stepping Motor TS3624N49 1.0V 2.8A 0.72Deg/Step

TAMAGAWA SEIKI TS 5631 N FA-CODER ENCODER

Tamco Toku T-6 Backfill Tamper 6" Solid Pad JET-06 SEE DESCRIPTION

TAO Mobile Mixer Car Amplifier 60W

Tapered Drilling Adapter Saver Sub Male x Female 2.25"-3.4"

TAPESWITCH SRSA GUARDMASTER CONTROLLER LIGHT CURTAIN INTERFACE

Targus USB-C Universal DV4K Docking Station with Power DOCK180USZ-52

 Tascam TSR-8 Reel to Reel Recorder 120VAC NO REEL CASSETTES

Task Force Tips Hydrant Oasis Assist Valve w/ Shutoff Valve 5"

Taski Diversey Standard Brush 7 3/4" W 1 1/4" Hole DIA for Swingo 250

Tatu DuroMark Oil Bath Bearing 1-3/4" Axil 010656 0501047046 26059

Taurex Drill Bits MD Series Roller Cone Bit 4-1/4" Ha-2P Pin Size 2-3/8" S22R5/6

Taylor Forklift Friction Pad Kit 4520-688

Taylor Freezers 084168-05 Clamshell Grill Platen Actuator for C850 X84168-SER

Taylor Pneumatic 1/2" Heavy Duty Impact Wrench T-7231N 543210

TAYLOR X87683SER1 Door A 1 Spout 3.4 Quart Threadless Baffle

TB Woods 5V10910 5V10.9X10-F Ultra-V Sheave 10 Groove

TB WOOD'S SE1 SE1C2S010H01 AC DRIVE 220-240V

TB WOOD'S ULTRACON II D2C0020 MOTOR SPEED CONTROL

TB Woods WE40 x 1-1/2" BTS D-Flex Hub Low Carbon Steel WE40H112

TB Woods WE40H178 WE40 X 1-7/8" BTS Hub Low Carbon Steel Material

TC Automatic Transmission Torque Converter F71 For Ford Escape 2001-2008

Tcci AC Compressor ET21L-25150 For liner York 1411002 304031

TCI Precision 4" x 12" 304 Stainless Steel 6-Side Precision Block

TDI Components Overhaul Kit for T100-V Starters T10V-28574

TDI Components T10V-28167 TDI, PART, PINION KIT, BI-DIRECTIONAL, 6/8P, 12T

TDI Components Turbostart Overhaul Kit for T30-60015 Turbotwin Engine

TDI T10V-28167 Bi-Directional Pinion Kit 6/8P 12 T for TDI T100-V Starter

TDK LAMBDA NNS15-5 POWER SUPPLY 5V 15W

TDK Lambda Ph100F24-24 100W 4.2A 24V

TDK LAMBDA RTW12-25RL 12V 25A POWER SUPPLY

TE 2272726-1 Automotive Connector Cap Assembly Sealed Hybrid Wire Dress

TE Connectivity 0460-202-16141 Automotive Terminals

TE Connectivity 125" Range String Pot SR1M-125

TE Connectivity 14P MCON 1.2SCCM Outer Housing 1924393-1 13872326

TE Connectivity 69437 Ampact Power Actuated Conn Tool for Red White Blue Shell

TE Connectivity Ampact Power Connector Tool Assembly 69612

TE Connectivity Automotive Connectors 1456549-1 Gen Y 26 Position

TE Connectivity Deutsch 8 Point Connector Back Shells 1011-243-0805

TE Connectivity General Purpose Relays 3-1393122-9

TE Connectivity Intrinsically Safe Pressure Transducer 10-28V 4-20mA 0-100 Bar

TE Connectivity Raven Cable Assembly Wiring Harness 115-7304-609, 2389000-1

TE Connectivity Single Wall Polyolefin 1.5" x 4' Heat Shrink Tubing

TE Connectivity Smart Limiter Cable Protector SL-500-120V-F-01(B1) SEE DESC

TE Connectivity String Potentiometer 125" Range SR1V-125 15-30VDC

TE Deutsch Connectors Header Panel Mount 5.46MM

TE Deutsch Pin Solid Size 8-10AWG Nickel Crimp 0460-204-08141

TE Kissling Power Relay 26.56.08.921 300A 24VDC

TEAC SC-2000 AR-2000 CH CHARGE AMPLIFIER

Tecan 30032114 50uL Filtered Pure LiHA FCA Conductive 24 x 96 2304 pcs Disposa

TECHNIFOR X-RANGE UC500P/C MARKING CONTROLLER

Techniks 22403 Cat40 SPU Drill Chuck Adapter 1/2"Capacity X 4" Long W/ Wrench

Techniks 34905-F HSK/SPU Drill Chuck Adapter HSK63FxSPU13-150

Technocheck Valve 1059701-2 Dual-Plate Butterfly Check Valve 4" 150PSI

TechnoMark Multi4 Hand-Held Dot Peen Marking System & Control Box SEE DESC

Techtongda 110V DQ-80 Electric Corner Rounding Cutter Machine w/ Pedal

Techtop 0.1223TECAB3 Electric Drive Motor W/ Yilmaz Drive for Dantex Picojet

Teco 3 Phase Induction Motor 2HP 6 Poles 1140 RPM 100L Frame For Ryowo Towers

Teco-Westinghouse NP0026 2HP 1200RPM 208-230/460 Volt 184T Motor

TECTIVITY TYPE-A VM255FM VIDEOMODULE MACHINE VISION

Ted Grob Coor Thread Rolling Die 12/14 3/8-16 P. (D2) No. 8107-U, 2-1/8" Bore

TEGUAR TP-1510-15 P/N 911G57P1510150 #1 FANLESS PC COMPUTER INDUSTRIAL OPERATOR

TEGUAR TP-1510-15 P/N 911G57P1510150 #2 FANLESS PC COMPUTER INDUSTRIAL OPERATOR

TEGUAR TP-1510-15 P/N 911G57P1510150 #3 FANLESS PC COMPUTER INDUSTRIAL OPERATOR

TEGUAR TP-1510-15 P/N 911G57P1510150 #4 FANLESS PC COMPUTER INDUSTRIAL OPERATOR

Tein Flex Z Coilover Front For 1993-1998 Toyota Supra JZA80/JZZ30-R VCT61-11931

Tek AC LVDT R-812 Series Linear Displacement Sensor NT-R-182-2000 10"L .812"

TEKEL TK120.F.500.11/30.S.K4.=.=07.PP2-1130.X939. ANGLE ENCODER

TEKTRONIX 8221011-A SOLO BASE UNIT RAD

TEKTRONIX TDS1012B TWO CHANNEL DIGITAL STORAGE ASCILLOSCOPE 100MHz 1GS/s

TEKTRONIX TPS 2024 4 CH. DIGITAL STORAGE OCSILLOSCOPE 200MHz 2 GS/s

Telco SMR 8400 MG J Spacemaster Thru Beam Photoelectric Sensor Receiver

TELECRANE F34-8D-RX REMOTE CONTROL

Telecrane Hi-proformance Industrial Remote Controller Model #F-21A

Telemecanique 017799 High Performance Power Supply ABL7 RP2403 In100-240VAC

 TELEMECANIQUE ATV31H075N4 AC SPEED DRIVE 0.75KW 1HP

TELEMECANIQUE ATV58HU72N4XZU AC DRIVE ALTIVAR 58 7.5 HP 460 VAC 50/60 HZ

TELEMECANIQUE ATV71H075M3 VARIABLE SPEED DRIVE 0.75 KW 1 HP 240 V

TELEMECANIQUE LC1 F 265 3 POLE CONTACTOR 240-265V 40-400HZ COIL

TELEMECANIQUE LC1D25 x 2 120V, LAD4RCU, LRD 21, LADN20 STARTER