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。

Pro-Bel 3411 CARD

Pro-Bel V6081 RACK CONTROLLER CARD

Pro-Bel 4425 CARD

GE REFRIGERATOR CONTROL BOARD 200D4850G014

SMC HIGH VACUUM VALVE XLA-16G-F9 0.4-0.7 MPa XLA16GF9

GE Range Oven Control Board WB27T11270

LG Refrigerator Control Board EBR41956422

Kenmore Maytag Motor Control Board W10112111

Whirlpool Washer Control Board W10384470

Astec DS450-3 Hot Swap Power Supply

Whirlpool Washer LCD Display Board W10368089

Adtech Spirent 400305 AX4000 OC-3c/STM1 Mutlimode Interface Module

WHIRLPOOL WASHER CONTROL BOARD W10306711

WHIRLPOOL WASHER CONTROL BOARD W1011253

MAYTAG WASHER CONTROL BOARD 62727840, 21280113

LG WASHER CONTROL BOARD 6871EA1016B

Instapak 901 "A SIDE" MOTOR CONTROLLER 1164BR

DELL CN-0WL887 MOTHERBOARD W/ INTEL PENTIUM 4 SL7PK CPU

SAMSG REFRIGERATOR CONTROL BOARD DA41-00596G

SAMSG REFRIGERATOR CONTROL BOARD DA41-00413G

Whirlpool Washer Motor Control Board 8520870

BIGBAND NETWORKS / ARRIS ASCM0304 BGR00201 ADVANCED (50-900MHZ) RF MODULE

WHIRLPOOL WASHER CONTROL BOARD W10252254 REV F

WHIRLPOOL WASHER CONTROL BOARD W10272596 REV D

Dell NPS-330AB A 330W Power Supply 17971-01K-OA5S

Arris Physical Interface Card PIC-NAM PICE-GB028W 2x GBIC / 8x RJ-45 ARCT00603

Spectra Logic Controller Board TCM-3 90870742

Sony YD-8 Board for BVU-800 U-Matic Professional VCR 1-604-333-16

Sony CD-12 Board for BVU-800 U-Matic VCR 1-604-334-334-14

60-00000006-04 Dot Hill Systems 2000 SCSI Event Reporting Card

Whirlpool White Stove Control 8273748

GE Refrigerator Main Control Board 200D4854G018

ASUS A55M-E MOTHERBOARD AMD A4-5300 CPU  H/S AND FAN

GRASS VALLEY 8900 FRAME MONITOR 671-4802

HP D3314-68002 Netserver Lc 5/66 Processor Board

DELL F635EF-00 635W Power Supply DEL-D-0635ADU00-101

DELL 0T10XW MOTHERBOARD WITH INTEL CORE I5-3470 3.20GHZ SROT8 CPU  4 GB RAM

DELTA EDPS-715AB A POWER SUPPLY 341-0353-02

Spower RAS-2662P6 Power Supply 968769-103

VIC2-2FXS, CISCO TWO-PORT VOICE INTERFACE CARD WITH VOICE 1V CARD

GE Refrigerator Main Control Board 225D4204G003

GE REFRIGERATOR CONTROL BOARD 200D4864G011

SAMSG REFRIGERATOR CONTROL BOARD DA41-00703A

WHIRLPOOL WASHER CONTROL BOARD W10022640

GE REFRIGERATOR CONTROL BOARD 200D4864G017

GE Refrigerator Main Control Board 2254205G004

ECS P4S5MG/GL MOTHERBOARD / INTEL PENTIUM SL5TK CPU  1GB RAM

Whirlpool Washer Control Board W10171932

HP 536883-001, LGA 775/Socket T, Intel Motherboard WITH CORE 2 DUO 2.93GHz

 HP 536883-001, LGA 775/Socket T, Intel Motherboard WITH CORE 2 DUO 2.93GHz

Spirent Adtech 400308A ATM DS1 Interface FOR AX/4000

DELL 0Y958C MOTHERBOARD NO CPU OR RAM

DELL 0Y958C MOTHERBOARD NO CPU OR RAM

Ericsson RPM 919 455/15000 R1B CONNECTION CABLE

SIEBE SPDT Enthalpy Control THCR-4

DVEO LS7643 REV. 4 Full duplex PCI DVB ASI-C DVB Master III Rx Card MODEL 104

ATX NETWORKS QRPS48-CV POWER SUPPLY IT

ALLEN-BRADLEY SLC 500 POWER SUPPLY 1746-P2

Axiomtek AX10466 10Base-T Network Ethernet Module

Spower D-60SU 7.5VDC Open Frame Power Supply

Leitch VDA-683 Differential Input Video Distribution Amplifier Card LOT/2

MSI MS-6182 MOTHERBOARD  PENTIUM II SL3EE  RAM  I/O SHIELD

Leitch ARG6800 audio remote gain

Norsat PLV-804FB C-Band LNB 3530

BLACK  MINIATURE MEDIA CONVERTER LHC015A

ALPHA 704-587-70-004 USM2-AM Module XM Series 2 UPS

ALPHA USM2.5-INTACTP USM2.5 Status Monitoring Module XM Series 2 UUPS

ALPHA 704-475-20-004 POWER SUPPLY Module XM Series 2 UPS

LG Refrigerator Control Board EBR67348018

Emacs P2U-6300P Switching Power Supplies 285W

Samsg Washer Control Board DC92-00249A

Whirlpool Duet Washer, Central Control it 410367

Whirlpool Duet Washer, Central Control it 410368

Whirlpool Refrigerator Control Board 2322547

Dot Hill SP-RFM-01 82-00000483 FAN it

GE WASHER CONTROL BOARD 175D52616002, WH12X10331

GE WASHER CONTROL BOARD 175D5261G039, WH12X10538

GE WASHER CONTROL BOARD 175D5261G018, WH12X10433

GE WASHER CONTROL BOARD 175D5261G022, WH12X10438

GE WASHER CONTROL BOARD 175D5261G030, WH12X10481

WHIRLPOOL REFRIGERATOR CONTROL BOARD W10259855

WHIRLPOOL REFRIGERATOR CONTROL BOARD W10259855

Samsg Washer Control Board DC92-00381L

Maytag Washer Control Board 6 2725860

LG Dryer Control Board EBR76542942

SAMSG REFRIGERATOR CONTROL BOARD DA92-00606A

LG REFRIGERATOR CONTROL BOARD EBR64110557

LG REFRIGERATOR CONTROL BOARD EBR64110557

IXIA 400T Traffic Generator Performance Analyzer CONTROL BOARD 850-0008-0304

Maytag Dryer Control Board W10252243

Kenmore Washer Control board W10252256

DELL 0PU052 MOTHERBOARD  INTEL CORE DUO SLA9V CPU  3GB RAM

 DELL 0PU052 MOTHERBOARD  INTEL CORE DUO SLA9V CPU  3GB RAM

AcBel R1IA2651A 650W Switching Power Supply APM12V0004

MCS - MEDIA CONTROL SYSTEMS DTG-3001A 4-Digit High Speed DTMF Cue TGenerator

Rohde  Schwarz 1084.9200.02 Back Panel For SMIQ

GEFEN HDMI OVER RGB R EXTENDER RECEIVER EXT-HDMI-5BNC R

Ross SEA 8003 ROSS VIDEO ROSS VIDEO SERIAL EQUALIZING AMP 8003A-001 ISS 6A

Granville-Phillips 275 Mini-Convectron Gauge 275605

CIRCUIT BOARD VEP85036F FOR Panasonic AJ-HD2700P HD2700 HD Digital D5 VCR/VTR

Allied Motion outer-rotor brushless DC motor with integrated drive KMX-01658023

IBM 1501483 XM 8 Bit ISA Monochrome Video Card w/Parallel Printer

DELL 0TCVRR 1100W PSU L1100A-S0 for Poweredge R510 R810 R910 T710 1Y45R

 DELL 0TCVRR 1100W PSU L1100A-S0 for Poweredge R510 R810 R910 T710 1Y45R

LG Refrigerator Control Board EBR74796403

Samsg Refrigerator Electronic Control Board DA92-00384B

Samsg Dryer electronic control board DC92-01729A

Whirlpool Dryer Control Board W10074280

Whirlpool Refrigerator Control Board W10317076 Rev A

KENMORE REFRIGERATOR CONTROL BOARD W10743957

Samsg Refrigerator: Electronic Control Board DA41-00670C

Samsg Refrigerator Inverter Control Board DA92-00215B

Whirlpool Refrigerator Control Board W10209636

Samsg Refrigerator Electronic Control Board DA41-00219K

Samsg Refrigerator Electronic Control Board DA41-00219K

HP5189-0462 IPILP-LCASUS MOTHERBOARD / PENTIUM DUELCORE1.80GHZ SLHZH CPU 2G RAM

MICRO STAR MS7248 VER:1.1 MOTHERBOARD/PENTIUM 805 2.66GHZ SLHZH CPU1024MB RAM

WHIRLPOOL WASHER DRAIN PUMP W10581874

BOSCH 71329-08 WHICH GOES INTO A 00660809 WASHER CONTROL BOARD

CableVista CV1103 EDGE DECODER FAN MODULE CV1103

Whirlpool Washer Main Control Board W10299400

Samsg Refrigerator Electronic Control Board DA41-00413C

MAXNET II MP4-2C Platinum Series Dual 4-Way Splitter Combiner Module

Samsg Washer Main control Board DC92-00383F

SAMSG WASHER CONTROL BOARD DC92-00621A, DC92-00619A

LG WASHER DISPLAY BOARD EAX366021016

Samsg Washer Control Board DA92-00550F

Samsg Washer Control Board DA92-00593B

Samsg Washer Control Board DA92-00524D

Maytag Washer Control Board 62722000

GE REFRIGERATOR BOARD PCB 200D2260G008

Samsg Washer Control Board DA92-00592A