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
DOMINO 25015
Domino DB4-0360024SP INK MANIFOLD ASSY WITH SENSOR
DOMINO USER PORT KIT BCP7, CABLE ASSEMBLY - L014897AT
DONGCHENG Z1C-FF-26 ELECTRIC HAMMER DRILL 081605022922
DONGJIN INTEC DINTECH SE89 ENGINE RPM PICKUP SENSOR
DONJUN DJC-L ENGINE MONITORING SYSTEM PANEL
DOOSAN INFRACORE DGC-2013 GOVERNOR CONTROLLER UNIT 300611-00686A
DORMAN SMITH - YA3N3P125T 125A 3 POLE MCCB
Dorman Smith B10 MCB Type B 10
Dorman smith loadmaster 30A Breaker trip fuse M3 (We have more in stock)
DORMAN SMITH SFT3P100NES SKELETON LOADSWITCH 100A TRIPLE POLE & INSERT TERMINALS
DORMAN SMITH YB3RH453 LOADLINE YB3 DOOR MOUNTED ROTARY HANDLE IP55 STD
DORMER HSCO 6
Dormer HSS 12 mmmm x Morse Taper Shank Reamer Bit
Dormer M8 ISO2 E509 HSS
Dormer Solid Carbide End Mill 010.ER0.5
DORSCH GD02-15D0400A POWER SUPPLY W006927732 PPM PCB MODULE
DR SCHENK CPT CARD EV1000 SD CONTROL SYSTEM - 4160183
DR. E. HORN HORNEL MDA 305283 CONTROL MODULE
DR.E. HORN GHG02088-4 TERMINAL BOX FOR WIO
DR.E.HORN EAD144X144 ANALOG DISPLAY UNIT INDICATOR
DR.E.HORN EG 75.11-4 Z M18 (18/16) TACHOGENERATOR
DR.SCHENCK 2942454 POWER SUPPLY - 27VAC IN - 7VDC OUT
DR.SCHENCK 3.560.104-031 MPU - MULTIPLIER - 24V
DR.SCHENCK 4160297PB01 NRSC CARD
DR.SCHENCK 8701297 LASER - <1MW 633NM
DRAFT FWD LEVEL TRANSMITTER WITH 11M CABLE AND FLANGE
DRAGER 6400078 ACCURO EXTENSION HOSE 10M
DRAGER 6400761 FLOW-CHECK AIR CURRENT INDICATOR KIT
DRAGER AEROTEST SIMULTAN HP AIR QUALITY TESTING KIT
DRAGER POLYTRON 2 IR GAS DETECTOR 6810100
DRAGER POLYTRON TX 4543415 TRANSMITTER SENSOR 4543425 REV 2 VER 48
DREGGEN CRANE AS DCS914-01 PCB MODULE EP1708.118321-509
DREGGEN CRANE DCS903-02 PCB MODULE
DREGGEN CRANE DCS904-01 PCB MODULE
DREGGEN CRANE DCS908-02 PCB MODULE
DREHZAHL WELLE 1/MIN 1621P SHAFT SPEED RPM METER 150-0-150 U/MIN
DRESCHER TM210 Operating - Reporting System / Text Display
DRILCO CYLINDER REPAIR KIT 01756807
Drill Bit 10.0mm M42
Drill bit 6.000 HSS 03348
Drill bit M2 6 ISO 2 6642 Xa
Drill bit Reamer Core Rotating tool
Drill bit SSH 00L7 27767
Drill Holder 40 25
DRILL Parallel Pipe Tap HSS
DROPSA 3417108 MICRO ELECTRIC PUMP 0.2/1CC PER CYCLE 110V 1LTR MAX AIR 4 BAR MAX
DRPD 132 MCM 0211
DRUCK PDCR 921-1742 PRESSURE SENSOR PDCR IS-0069/C
DRUCK PDCR 921-1742 PRESSURE TRANSDUCER PDCR IS-1745 5VOLTS
DRUCK PTX 1240 PRESSURE TRANSMITTER 15 PSI
DRUCK PTX 1400 INDUSTRIAL PRESSURE TRANSMITTER 1 BAR G
DRUCK PTX 1400 INDUSTRIAL PRESSURE TRANSMITTER 400 BAR SG
DRUCK PTX 520 PRESSURE TRANSMITTER 50 BAR G
DRUCK PTX 7800 SERIES PRESSURE TRANSMITTER
DRUCK PTX EX-0129 PRESSURE TRANSMITTER 200 PSI G
DSL Broadband Filter MicroFilter modem phone splitter DSL682
DUALCON DUAL OUTPUT 3-PORT ISOLATING SIGNAL CONVERTER DUALCON-6
DUFF NORTON LM9809-12
DUKIN BESKO PS-35-10 HYDRAULIC PRESSURE SWITCH
Dunkermotoren BG65X25CI incl. SGF120 angle gear + planetary gear PLG52
DUNKERMOTOREN BG65X25CI Inkl. SGF120 Winkelgetriebe + Planetengetriebe PLG52
Dunkermotoren BG75X25PI incl. SGF120 angle gear
DUNKERMOTOREN DR62.0X40-4 18W GEARED MOTOR
DUNKERMOTOREN Traduction LP050-MX1-5 - 121-000 / Ratio 5
Dunkermotoren Translation LP050-MX1-5 - 121-000 / *Ratio 5
Dunkermotoren Translation LP070-MX1-3 - 121-000 / *Ratio 3
DUNKERMOTOREN Transmission LP050-MX1-5 - 121-000 / Ratio 5
Dunkermotoren Type: BG 40X50 Incl. PLG 42S + Asto E100A24
Dunkermotoren Type: BG 65X75PI Incl. PLG 52
Dunkermotoren Type: BG 75X50 CI Including Gearbox PLG 75HP
Dunkermotoren Type: BG 75X50 CI Including Gearbox PLG 75LN
Dunkermotoren Type: BG 75X50PI Including Gearbox PLG 75 + Asto Encoder E90R24
DURR DENTAL 5922-520-51 FRAME
DVD/CD REWRITABLE DRIVE DH-16A6S14C
DWM COPELAND EZ-S-6002-V11B VALVE PLATE KIT
DWYER FLOTECT L6EPB-B-D-3-C LIQUID LEVEL FLOAT SWITCH
DWYER RMA-13 FLOW METER WITH CHARLES AUSTEN PUMP L12
DYNALCO LMD-120D LOOP SIGNAL POWERED DIGITAL INDICATOR 0-1999 PSI
DYNALCO LMD-120D LOOP SIGNAL POWERED DIGITAL INDICATOR 0-300 PSI
DYNALCO LMD-120D LOOP SIGNAL POWERED INDICATOR 0-6000 PSI
DYNALCO SST2000A SPEED SWITCH AND TRANSMITTER SST2000A-450
DYNAMICS RESEARCH CORP C25F061B15-2500 HOLLOW SHAFT ENCODER
DYNAPAR PM21S00
DYNASONICS TFXL TRANSIT TIME FLOW METER DTFXL2-XA1-NN
DYNISCO APU 612/HH SENSOR 89.008
DYNISCO DSV622/NUBS DSV622 SIGNAL AMPLIFIER FOR DISPLAY MODULES
Dynisco Pressure Sensor TPT4634-35B-6/18-S137-SIL2
DYNOPTIC SM-202 SINGLE PASS OPACITY MONITOR ASY-034
DYNOPTIC SM-202M RECEIVER (RX)
DYNOPTIC SM-202M TRANSMITTER (TX)
E. Dold & Söhne Emergency Stop Module BD5987 03/001
E. Dold & Söhne Emergency Stop Module LG5925.48/61 AC/DC24V / *00619
E. Dold & Sons Emergency Stop Module BD5987 03/001
E. Dold & Sons Emergency Stop Module LG5925.48/61 AC/DC24V / *0061919
E.Dold & Söhne BN 5983.53, 0031885, VDE 0110, safety relay relay, AC 230V
E.DOLD & SOHNE BN5930.48/204 EMERGENCY STOP SAFETY RELAY MODULE BN5930
E.DOLD 0025467 MK7854.82 CLOCK/TIMER MODULE AC50/60HZ 220V E100S/A100S
E.DOLD 0030207 MK9906.81/024 TIME RELAY UC24V+AC220-240V 30S
E.DOLD 0030718 ML9702.11 DC24V VOLTAGE RELAY
E.DOLD 0031606 AA9943.12 SAFETY RELAY 3AC 50/60HZ 230/400V
E.DOLD 0035861 BN5983.53/200 SAFETY RELAY A1/A2 AC50/60HZ 230V
E.DOLD AI700.11 TIMER RELAY
E.DOLD BD5935.48 SAFETY RELAY 3 CHANNELS 5 A + 1 AUX DC 24V
E.DOLD DI 760.11.8181 TIME CONTACTOR
E.DOLD EH9997/044 FAULT RELAY A1/A2 AC50/60HZ 110V SA-S6/N
E.DOLD MK9906.81/024 TIME DELAY RELAY UC24V+AC220-240V 30S
E.DOLD MK9989 TIMMER AC/DC24V + AC220-240V 5-100S
E.ONE E ONE GGD DISPLAY KEYPAD
E/0NE UNIVERSAL CONTROLLER HA0385GO3 REV A
E+H FLOWTEC 319100-0200 D I/O BOARD V1.04.10
E113714 ES 50/3G Relay Socket
E12771 PCB CARD E12771S ISS 2
E16W77 CIRCUIT BOARD
E227809 B
E2S BEXBG05D EXPLOSION PROOF XENON BEACON LIGHT 24VDC 5 JOULE YELLOW
E2S BEXBG05D EXPLOSION PROOF XENON BEACON LIGHT 5 JOULE BLUE
E2S BEXBG05D EXPLOSION PROOF XENON BEACON LIGHT 5 JOULE RED
E2S BEXBG05D EXPLOSION PROOF XENON BEACON LIGHT 5 JOULE YELLOW
E2S SON4 ALARM SOUNDER & XENON BEACON SON4AC230R/R
E2V TECHNOLOGIES GXH19/2A SERIES 2-ELECTRODE SPARK GAPS
EADMOTORS DA23DBB-M201B BRUSHLESS DC MOTORS 0441-00646
EADMOTORS DA23DBB-M201C BRUSHLESS DC MOTOR 0444-0802
EAFNIR RA 014 NPP
EAO 704.950.5
EASTAR 140330 SIGNATURE DRIVER CARD VE 2424 REV 05
EATON 1023215 CAPACITOR BOARD 1023166C
EATON 16LCT
EATON 170M6416 HIGH SPEED SQUARE BODY FUSE
EATON 235910 DILM80(240V50HZ) 3 POLE CONTACTOR, 37KW, 400V, AC3, 80A
EATON 239406 DILM80 IEC MAGNETIC CONTACTOR, 24V AC, 3 POLE
Eaton 400NHG2B
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