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
Daytronic 9501B/002 Counter Timer
DC drive Accutronics Quantum III M45R-14ICDQ 220/440V 20HP
DC Drive Magnetek Louis Allis 53SD3202-0002 Saber 3306 230/460V, 17A, 60Hz, 3ph
DC Drive Magnetek Louis Allis Saber 3306 53SD3202-0002 230/460V, 60Hz, 29A 3ph,
DC Fan AFC0912D 12V 0.46A
DC Fan AFC0912D 12V 0.46A
DC Fan C33416-76 12V 0.20A
DC Fan C33416-76 12V 0.20A
DC microprocessor based motor speed control MD10P-9 85-265VAC FLA 5A DC
DDK DAI-ICHI MFT-240M10-S NUTRUNNER
DDK DAI-ICHI MFT-240M10-S NUTRUNNER
DDS02.2-A100-BE23-01-FW REXROTH INDRAMAT DIGITAL AC SERVO CONTROLLER (WG)
DDS02.2-A100-BE23-01-FW REXROTH INDRAMAT DIGITAL AC SERVO CONTROLLER (WG)
Dearborn Crane Coil Lifting Hook 2-Ton 4000Lb 27" Throat 20" Tall Inner
Dec De Dietrich PTS 150-N Stainless Powder Transfer Pump Housing 6" Flanged
Deestone 28x8.15-15 Pneumatic Air Forklift Traction Tire 6-Lug Rim Guard Black
Delco 5230 TS NDH Radial Cylindrical Roller Bearing 10-5/8"OD 3.5"Wide
DELCO G1354 2HP 460V 3.0A 1730RPM 184 FRAME SINGLE PHASE MOTOR NNB
DELTA COMPUTER SYSTEMS RMC75S SER RMS70 MOTION CONTROLLERS NOS
Delta computer systems RMCQUAD rev. 2.2
DELTA EXP70D8 EXPANSION MODULE
Delta Power Hydraulic D49 Pump Motor 3Hp 1750 RPM 460V 3PH 182TC 33 GPM
DELTA RMC75E MOTION CONTROLLER
Delta Rota Sonde 3010L Scanning Hot Metal Detector Laser Scanning Sensor 110V
DELTA VFD007A43A 1HP VARIABLE DRIVE
Delta VFD110B43A Series Drive
Delta VFD110B43A Series Drive
Demag Control Switch DSC, 77330044
Demag Control Switch DSC, 77330044
DEMAG CRANES COMPONENTS GMBH DKM 1-50 K V2 F4 / DEMAC
Demag KBK-II-R Overhead Crane 45° Curved Section Monorail 2200lb Power Rail 46"
Dengensha Welding Controller SRCR-L1DI-M1-NAS2
Dengensha Welding Controller SRCR-L1DI-M1-NAS2
Denison 026 34853 H 0054781 R5U06-513-15-09 Hydraulic Valve Assembly
Denison 4D01 35 208 0302 00A 1G 0Q 327 Hydraulic Valve Bank Assembly W/ Manifold
Denison T6C 010 3R02 B1 P31 Hydraulic Vane Pump 13gpm 3500psi 1500rpm SAE-B
Denison TB 004 1R00 A101 Hydraulic pump, piston, 190 bar
Denison TB 004 1R00 A101 Hydraulic pump, piston, 190 bar
Densan DCP-P750/11 SBC Single Board Computer
Densan DCP-P750/11 SBC Single Board Computer
DENSAN VME BOARD DVE-102 (BOARD ONLY)
DENSAN VME BOARD DVE-102 (BOARD ONLY)
DENSITRON DT59HP IBM PC COMPATIBLE DPX57 PROGRAMMING SOFTWARE FREE SHIP
DENSO RC5H4A ROBOT CONTROLLER
DENSO RC5H4ABN ROBOT CONTROLLER
DENSO RC5HME4BABN ROBOT CONTROLLER
DENSO RC8-VSA4-NNNM-NN-NNN controller
DENSO 410159-0190 410159-0260 410141-1740
Denso DST-i body set Bluetooth attaching scan tool failure
DENSO MFA004LCTNSA SERVO MOTOR
DENSO RC5H4A ROBOT CONTROLLER
DENSO RC5H4ABN ROBOT CONTROLLER
DENSO RC5HME4BABN ROBOT CONTROLLER
DENSO RC5-HSE4BA LOADER CONTRLLER
DENSO RC5-HSE4BA LOADER CONTRLLER
DENSO RC5HSE4BABN, Robot Controller,
Denso RC5-SMT4A Robot Controller 230V 3.3KVA 410000-8360
Denso RC5-VS6A Robot Controller 230V 1.5kva 410000-7600
DENSO RC7MHMG4BAEN ROBOT CONTROLLER
DENSO RC7MHSG4BAEN ROBOT CONTROLLER
Denso RC7M-SMT6AA CONTROLLER RC7MSMT6AA
Denso RC7M-SMT6AA CONTROLLER RC7MSMT6AA
Denso RC7M-SMT6AA CONTROLLER RC7MSMT6AA
Denso RC7M-SMT6AA CONTROLLER RC7MSMT6AA
DENSO RC8-VSA4-NNNM-NN-NNN controller
DENSO SGMPH-15A1A-DH22 410627-030011M11
Denso TCP-031-P | 06K9465 Hydraulic Pump Motor Toyota 7FBH25 Electric Forklift
DENSO TP-RC7M-3 TEACH PENDANT FOR SAME DAY SHIP
DENSO Wave RFID Handy Terminal BHT-1281QULWB-CE RFID Table Scanner URCT-M21 DENS
DESCHNER 1003312SLIM CYLINDER
DESOUTTER 6159326800 CONTROLLER CVIL II 115/230VAC
Detector 3 3LC60 Safety Light Curtain Transmitter & Receiver w/Controller 3LC-B
Deublin AP10-010-210 High Speed Rotary Union G3/8" Straight Thread
DEV11G - Crouse-Hinds - Motor Control Part And Accessory
DEV12S769 - Crouse-Hinds - Pushbutton
DeZurik 9260862 6" Knife Gate Valve 316 SS Rising Stem KGS
Dezurik DL-40-R-C-B6 Pneumatic Diaphragm Stainless Valve 1-1/2" Flanged SS CF8M
DFI KS445-154-000 Operator Interface Panel 100-240Vac 4-2A 60/50Hz
DG321NRB - Eaton - 30 Amp Disconnect and Safety Switch
DH323NRK - Eaton - Disconnect and Safety Switch
DH323NWK - Eaton - Disconnect and Safety Switch
DH363UGK - Eaton - Disconnect
DH364UGK - Eaton - Disconnect
DIAGNETICS PC1000 FLUID ANALYSIS MEASUREMENT PORTABLE CONDITION MONITOR
DIAVAC LIMITED PT-1DA controller
DIAVAC LIMITED PT-1DA controller
DIAVAC LIMITED PT-3DA controller
DIAVAC LIMITED PT-3DA controller
Didion Possibly Rotary Drum Guide/Drive Roller Pulley Foundry Equipment See Info
Dieco 2 back post kick press die set
DIGIBOARD COMMUNICATION MODULE DBI 30000624 REV E
Digital Alpha VME 5/480 BOARD
DIGITAL ELECTRONICS 2880061 PROFACE TOUCH SCREEN PANEL
Digital input board card Philips No. 9404 462 08381, (WL)
DIGITAL MONITORING 71416 CIRCUIT BOARD PC0053
DIGITAL MONITORING 7148 CIRCUIT BOARD PC0053
DiJet SA-10429 9" Diameter Shell Mill Tool Holder 3" Arbor
DINAMICA GENERALE 9650213 SCALE WEIGHT MONTIOR
Ding Dynamic XR71015-37-U1 Brake 230/460V 1Ph 15LB FT Torque
Dino-Lite Premier Portable2 with camera,
Dino-Lite Premier Portable2 with camera,
Dittel F21135 Sensor Transmitter
DIVERSEN BM0430A2BK AC SERVO MOTOR 0.4KW 3000R/MIN
DIVERSIFIED ELECTRONICS SLM120ASE PHASE MONITOR
Dixon F35-OBAMB Pneumatic Air Filter 1-1/2" NPT W/ Auto drain
DK3250 - Eaton - Molded Case Circuit Breaker
DK3350 - Eaton - Molded Case Circuit Breaker
DK3400 - Eaton - Molded Case Circuit Breaker
DK3400W - Eaton - Molded Case Circuit Breaker
DK830SLR Magnescale Right Angle Probe 30mm Stroke
DLM2054 mixed signal oscilloscope Yokogawa Electric
DME CMP15G SMART SERIES TEMPERATURE CONTROL MODULE
DMF-5005N OPTREX LCD Panel LCD Graphic Module
DMF-5005N OPTREX LCD Panel LCD Graphic Module
DMG Mori Panel 85-240VAC 0.3A 2386389
DMP-63/24A
DMS-GB1-Z28 hokuyo photoelectric switch sensor
DNBA2020 - Eaton Cutler-Hammer Tandem 20 Amp Single Pole Bolt-On Circuit Breaker
DO41738 PLC AC I/O Circuit Board Module Assembly
Dodge 019212 CP400 X 24" Center Pull Take Up Frame W/WSTU-E-200R Bearing
Dodge 26025L14 Gear Motor 25:1 W/Baldor VEBM3554T Electric Motor & Sterns Brake
Dodge 350 Tigear MR94670 Worm Gear Speed Reducer 30:1 Ratio
Dodge 3C14 0-E 3-Groove C-Belt Pulley Sheave QD E-Bushing 14.4" OD
Dodge Baldor MR947431K 10:1 Gear Motor 176 RPM 1Hp 230/460V 3PH 56C Dual Shaft
DODGE FCIP311R 069380 PILOTED FLANGE BEARING
Dodge HB482CN140TC Helical Gearbox 28.74:1 Reducer 3.77Hp 61rpm 140TC Inline
Dodge Hinged Cap Pillow Block Housing 2-Bolt Base 6-1/2" ID -No Bearing
Dodge M613930001 DC Gear Motor W/General Electric Motor & Warner EM 50-40 Brake
Dodge M615864001 DC Gear Motor W/General Electric Motor & Warner EM 50-40 Brake
Dodge Master XL Speed Reducer Gear Box 50:1 1750RPM .69HP 56C Frame Dual Output