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

USON 4000-LTX Monitor Tester POWERS ON BUT DIMS AFTER FEW MINUTES AS IS

USTER IMK C20 QUANTUM 2 YARN CLEARER

Uticor 58454 PMD300 IND Workstation 115VAC

Uticor PMD200 Programmable Msg Display 76536-1 115/230V .3/.15A 50/60Hz

UTSUKI KEIKI PB213 TANK LEVEL INDICATOR PCB UPXJ PB213C ST2CHAMP

UTSUKI KEIKI PB213C TANK LEVEL GAUGING SYSTEM PCB

UTSUKI KEIKI PB213C TANK LEVEL GAUGING SYSTEM PCB

UTSUKI KEIKI UPX-020BF06-L LEVEL DETECTOR UPX-O20BF06-L UPX-FPJ2

UTSUKI KEIKI UPXJ-W13H-L LEVEL DETECTOR WITH FLANGE UPXJW13HL UPX-FH

UTSUKI KEIKI UPXJ-W13H-L LEVEL DETECTOR WITH FLANGE UPXJW13HL UPX-FH

UTSUKI PB213C TANK LEVEL GAUGING SYSTEM PCB

UV Pure H400001 Ballast & Controller Board for Purification Unit w/LCD

UVP ML-49 95-0011-01 Blak-Ray Longwave UV Lamp 366NM *MISSING COMPONENTS*

UZUSHIO ELECTRIC UACS-2-3 PCB

UZUSHIO ELECTRIC UDI01 DIGITAL INPUT BOARD

UZUSHIO ELECTRIC UGS11 LOAD SHARING UNIT ULS11 91A101

UZUSHIO ELECTRIC UHS01 DIGITAL INPUT WITH INTERRUPTION BOARD

UZUSHIO ELECTRIC UIO01A DIGITAL INPUT OUTPUT BOARD

UZUSHIO ELECTRIC UST-12-P12 PCB 1333 UST12P12

UZUSHIO ELECTRIC UST202A PCB 1307B

UZUSHIO ELECTRIC UST-204B2 PCB NO. 1306B

UZUSHIO ELECTRIC UST205A PCB 1308B

UZUSHIO ELECTRIC USW-1E NAVIGATION LIGHT INDICATOR 1056

UZUSHIO SR10-01A PCB UAT 1121 SR1001A

UZUSHIO UAT 1264 01D3 PCB

UZUSHIO UAT R02D PCB 1114 UATR02D

UZUSHIO ULB33A-B1 ANNUNCIATOR CARD ULB33AB1 1396B

UZUSHIO ULB33A-BA ANNUNCIATOR CARD ULB33AB1 1396B

UZUSHIO ULB3T ANNUNCIATOR

UZUSHIO UP3 AMPLIFIER MODULE CARD 1048

UZUSHIO US31 FLICKER PCB CARD 1049A

V.B. Modena C213858-06/97 Transformer 500VA Pri.220/260/380/415/460V

V.Copelli STC12/39-2 Air Control 5 Lubrication System Operator Panel AS IS

V.T.R. E150 Vibratory Feeder Control

Vaasa Control PC00010-B Circuit Board AS IS

Vacon AC Drive 3Ph 525-600V 50/60Hz 6.8A/4.5A Input

Vacon PC00228 Variable Speed Drive Board

VACON VACON0020-3L-0012-4+EMC2+QPES+DLFR AC DRIVE 5.5KW

VAF INSTRUMENTS 0497-0265 VISCOSENSE PCB 622047A0078 VISOSENSE

Vaisala 215467 Humidity and Temperature Module NWB

VAISALA WT511 DIGITAL TRANSMITTER

Valco Cincinnati 151XX011 PC Board

Valcom VPVTF-A3-30MPAS-4 Pressure Transducer 30MPa NWB

VALCONEX SOLENOID VALVE

Valemt A413153 BOU 8-3 Binary Output Card

Valenite PT-655-V40 Benchtop Tool Holder Vise

Valley Electromagnetics Corp 3318-11A Motor 0.11HP 1375RPM 90VDC 1.35A

VALMET A413150 BINARY OUTPUT UNIT BOU8

VALMET A413150 BINARY OUTPUT UNIT BOU8

VALMET A413620 REPEATER MODULE

VALMET AUTOMATION A413325 POWER UNIT MODULE IPU

VALMET AUTOMATION MKB2 DAMATIC KEYBOARD M851565

VALMET AUTOMATION MKB2 DAMATIC KEYBOARD M851565

Valtek EP-80R Hazardous E/P Positioner 4-20mA 300OHMS 15VDC

Valtek IS-80R Hazardous E/P Positioner 4-20mA 300OHMS 15VDC

Valtorc 200SS-3TG-SN-TC-VT-100DA Pneumatic Valve Actuator RFB

ValueFlex 3.301.70340121-01 Red Cable Seal 1/8"X12" 160-Pk

ValueFlex 3.301.70340121-01 Red Cable Seal 1/8"X12" 250-Pk

Valv-Trol 1/2" Inlet NPT 3/4" Outlet NPT High Pressure Valve 150 psi

Valv-Trol B-0511 Automatic Inlet Valve 150-400 psi

Valv-Trol B-1002 Check Valve 1-1/4" NPT 3500 psi 240 bar

Valv-Trol B-1004 2" Check Valve Bronze 3500 Max psi 2" NPT

Valv-Trol D-1000 3 Way/2 Position Valve 3/4" NPT 3500 Max psi (240 bar)

Valv-Trol D-1010 Balanced 2 Way/2-Position Valve 3/4" 3500 psi

Valv-Trol D-1012 2 Way/2 Position Valve 3500 psi Bronze 1-1/4"

Valv-Trol D-3902 3 -Way/2 Position 500 psi Valve 1/2"

Valv-Trol VT12 2 Way/2 Position Valve 1/2"

Variac W5M Adjustable Auto-Transformer 120V 50/60Hz Line 0-140V 5A Load

Varian 990-CLD Auto Line Leak Detector 115VAC

Varihertz M2201 Sinus Frequency Converter 220/240V 50/60Hz 0.25kW

Varihertz M2201I Sinus Frequency Converter 220/240V 50/60Hz .25kW

VarTech Systems VT150PSS-RT Touch Screen Panel 24VDC 15" Screen

Varvel FRD12/B3-H1 Helical Gearbox 10:1 Ratio BOLT WEAR

VATEC ELC35U COMPRESSED AIR EJECTOR

VEB Industriewerke TGL 17-747407 Hydraulic Gear Pump

Vectrol 31Y275 PC Board

Vee Arc 922-337 Super 7000 Pulse Width Adjustable Frequency Control

Veeder-Root 0744396-012 6-Digit Electromechanical Counter 230VAC

Veeder-Root 742835-001 Counter 5-Digit Display

Veeder-Root 742935-001 Counter 5-Digit Display

Vega BAR24.XBA411 Pressure Transmitter Sensor 0-1.0 bar 4-20 mA 12-36DC

Vega BAR44.XLA32CHXKX Pressure Transmitter 0-40KPA 12-36VDC 4-20mA

VEGA VEGABAR 82 B82.IMLFSAGEEZXAIDXX PRESSURE TRANSMITTER 0-2.5BAR

VEGA VEGAMET 624 Controller and Display Instrument for Level Type: MET624.XXX

VEGA VEGASWING 63 VIBRATING LEVEL SWITCH SWING63.DANBVXUR

VEGA VEGASWING 63 VIBRATING LEVEL SWITCH SWING63.DANBVXUR

VEGA VEGATOR 527 LEVEL INDICATOR

VEGA VEGATOR 527 LEVEL INDICATOR

VEGA VEGATOR 527 LEVEL INDICATOR

VEGA VEGATOR 621EX Type: TOR621EX0.AK SIGNAL CONDITIONER

VEGA VEGATRENN 149AEX CHANNEL SEPARATOR

VEGA VEGATRENN 149AEX CHANNEL SEPARATOR

VEGA VEGATRENN 149AEX CHANNEL SEPARATOR

VEGABAR14 PRESSURE TRANSMITTER BAR14.X1FM3GG1

VEGATRENN 149AEX SEPARATOR

VEINLAND 1NMEATO8 NMEA EXPANDER M0102 NMEA KONVERTER M0122 1NMEATORS422

Vektek 15-0413-02 Swing Clamp NOP

Velan L08-0310C-13SL Knife Gate Valve Size 2" Class 150

Velan L10-0310C-13SL Knife Gate Valve Size 3" Class 150

Velan L12-0320C-13SL Knife Gate Valve Size 4" Class 150 Body SS316

VEMAG 871.250.004 Control Board *Silicone on Board*

Vemat 0.33HP 1644RPM 254/440V TEFC 3Ph 1.30/0.77A 60Hz

Venture 78131383 Magnetic Ballasts 480V Pri 295VOC CW Isolated Sec 60Hz

VERACITY VCS-4P1-MOB CAMSWITCH 4 Mobile

Verderair 810.6772 Double Diaphragm Pump 1/2" PTFE Polypropylene Size 15

Vernitron 7676354 Synchro Transmitter 3A Single Shaft 2.2490" Flange Dia

Versa KSG-4332-HC-3-5-181-A120 Pneumatic Directional Valve 110/120VAC 8.5W

VERSA P-2002-02-XMAA-D024 VALVE

VERSA P-2002-02-XMAA-D024 VALVE

VersaLogic VL-EBX-12D Mother Board

Versa-Matic 476.V117.600 Wetted End Kit for 1/4" E6 Diaphragm Pump NWB

Versa-Matic E1A-AV-KIT E1A Air Valve Kit for E1 1" Pump *RIPPED BAG* NWB

Verson BEM100 Analog On Delay Time 1-999 Sec. 120V@60Hz NO SLEEVE

VESDA LASERPLUS 391255 DISPLAY RELAY PROCESSOR

Veteran 214500 Water Temperature Controller Panel

Vexta FBLD120AW Brushless DC Motor Driver 100-115V 50/60HZ 3.0A 245A

Vibco VS-190 Vibrator Pneumatic Turbine 80psi 7200rpm

Vibco VS-250 Pneumatic Turbine Vibrator 60psi 5500 VPM 500lb Force

Vickers 02-301776 Pneumatic Valve Assembly

Vickers 02-355671 Pneumatic Valve Assembly

Vickers 02-358716 Vane Pump Inlet 20mm Outlet 27/10mm Steel 100BAR 20cm3/U

Vickers 02-556794 Pneumatic Valve Assembly

Vickers 2./1.X7.-TZ07DE5N-4KW07000 Pneumatic Cylinder 2" Bore 7" Stroke

Vickers 2620VQ12-A12 Vane Pump

Vickers 3620VQ25A12 Vane Pump

VICKERS 507848 VALVE COIL H507848 24VDC 30W

Vickers 912113 Seal Kit NWB

Vickers 934798 Seal Kit 1K-01324-07

Vickers Airflex 142095JC Rev. P Size 6CB200 Clutch-Brake Assembly 110 PSI

Vickers CG-06-C4-40 Relief Valve

Vickers CS5060ABMFWB5100 Solenoid Controlled Relief Valve

Vickers CT-06-F-50 Relief Valve 1500-3000 psi 60 gpm