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
Janitor Ulfa PDS-B50M2 PDSB50M2 Differential Pressure Instrument w/ Breakage
Janome JR3303N-AJ Desktop 3-Axis Dispensing Robot X-Y 300mmx320mm Z 100mm 120VAC
Janus Reduced Drive Chain Hoist Kit RH w/Mounting Brackets For 2000 Doors
Japan Servo Servex KH56KM2-651 KH56KM2651 Stepping Motor
JAQUET T401 CURRENT OUTPUT RELAY
Jasper Electronics RPS-28 SYSTEM-M1225 power supply, 03152-901 / FOR PARTS
JCB SERV 401/N4594 Engine Front Axle Propshaft
JCB Valve servo cut-out (Solenoid 25/223062) 25/993000
JDS Uniphase MAPA+2370190FP Optical Attenuator Module for MAP Series NICE UNIT !
JDSU 100GE 10x10G Electrical CFP Interface EL-IF 3061/92.98
JDSU SB2C40084+27CF003FA SB Series Fiber Optic Switch /
JDSU/ Acterna ONT-506 Optical Network Tester 40/43G w/ 2x Modules & Power Cord
Jeio Tech IB-01E Bench Top Incubator 2.3CuFt, Ambient To 60°C, 120VAC 2.1A
Jenaer ECOSTEP 54-AA-000-000 54AA000000 Controller
JENKINS BROS.,FIG 47-U,BRASS VALVE 1 INCH NPT NOS
Jergens NKE Low Profile Slider Bed Flat Belt Conveyor DC End Drive 2.75" x 98"L
Jervis B Webb 10ft Caterpillar 2" Pitch Cotter Roller Chain Dia w/Dog attachment
Jesco,1711-12-9121-1,Metering Pump 1.4GPH 1000PSIG 115/230V Leeson 1/4HP Motor
Jet Set Spray System Automatic Machine Lubricator Pump 5 Gal Stainless Tank
Jetter JH2-0026-21-4RGB Servo Motor Jetter JH2 Speed 4500/min.
Jetter JH2-0026-21-4RVB Servomotor Jetter JH2 Speed 4500/min
JEWELL INSTRUMENTS LCF-100 INCLINOMETER 14.5 (AS PICTURED)
JEWELL INSTRUMENTS LCF-100 Tilt Meter 14.5 (As Pictured)
JEWELL INSTRUMENTS LCF-100-14.5 458100-002 14.5° Inertial Sensor Inclinometer
JEWELL INSTRUMENTS LCF-100-14.5 458100-002 INCLINOMETER 14.5° INERTIAL SENSOR
JEWELL INSTRUMENTS LCF-100-14.5 458100-002 Inclinómetro 14.5°Inercial Sensor
JEWELL INSTRUMENTS LCF-100-14.5 458100-002 Tilt Meter 14.5° Inertial Sensor
Jewell LCF-100 Inclinometer 14.5 Instruments (As Shown In Picture)
JFW 50PA-705 N/SMA 50PA705 Multiple Programmable Attenuator 700-3000 Mhz
JFW 50PA-798 SMA 50PA798 Multiple Programmable Attenuator 700-3000 MHz
Jianghai CD138 450 v 2200
Jil Sander Womens Belted Single Breasted Padded Satin Coat in Cream Size 2 US
JINI_MST_REV10 JINIMST REV10 Board w/ AT-4220 REV. A
Jinyoung Contech HT104-TU HT104TU TFT LCD Monitor
Jinyoung Contech INOV80D TFT LCD Monitor
Jinyoung Contech INOV80D TFT LCD Monitor w/ Stand
JIS C6802:2005 Laser Sensor
JIS C6802:2005 Laser Sensor
JL Audio XD-BPW8-250 Copper Power Wire 8AWG 250FT Blue
JL-35S5 Power Supply
JL-35S5 Power Supply
JLG CURTIS MC-1 1600305 Ver 1.7 Micro Processor Controller For JLG Man Lift
JMC JM-SD3UL JMSD3UL 2-Phase Unipolar Microstep Drive
JMOON M12 Pink Iron RF Beauty Instrument Wrinkle Reduction Anti-Againg
JOHN DEERE PRODUCT IMPROVEMENT KIT MPR13098 FOR TRACTORS & COMBINES
Johnson Controls 25-85118-2 REV-A 25851182 Board
Johnson Controls 25-85119-7 REV3 25851197 w/ 25-85120-18 Board
Johnson Controls 25-89165-6 25891656 Board
Johnson Controls A36AHB-9109 A36AHB9109 Temperature Control Four Stage
Johnson Controls MS-NAE3511-2 METASYS Network Automation Controller NAE-3511
Johnson Controls P32AJ-2 P32AJ2 Differential Pressure Switch
Johnson Controls P70MA-1 P70MA1 Pressure Control
Johnson Controls P70MA-1 P70MA1 Pressure Control
Johnson Controls XP91D05 Expansion Module
Jomo P150160264 Motor Forklift Drive 48VDC 0.65kW Gear MR270FR 2L + Brake
Jordan 708TP Low-Flow Control Valve 1/2" NPT 3-15 PSI w/Siemens Positioner
JOSLYN CLARK 7403-3050-22 SIZE 3 250VDC Definite Purpose Contactor 100A Open
JOSLYN CLARK Cat NO.5DP3-02100 Protector Definitive Purpose Sailors 110A 500V DC
JOSLYN CLARK Cat NO.5DP3-02100 Protector Definitive Purpose Sailors 110A 500V DC
JOSLYN CLARK CAT. NO.5DP3-02100 CONTACTOR DEFINITE PURPOSE RATINGS 110A 500V DC
JOSLYN CLARK CAT. NO.5DP3-02100 CONTACTOR DEFINITE PURPOSE RATINGS 110A 500V DC
JOSLYN CLARK Chat NO.5DP3-02100 Contacteur Definite But Classements 110A 500V Dc
JOSLYN CLARK Chat NO.5DP3-02100 Contacteur Definite But Classements 110A 500V Dc
JOSLYN CLARK Gato. NO.5DP3-02100 Contactor Definitivo Propósito Clases 110A 500V
JOSLYN CLARK Gato. NO.5DP3-02100 Contactor Definitivo Propósito Clases 110A 500V
Joslyn Clark HLA-1 Heavy Duty Limit Switch 25A 600V 1P Pilot Duty A102-41252A-1
Joslyn Clark HLA-1 Heavy Duty Limit Switch 25A 600V 1P Pilot Duty A102-41252A-1*
Joslyn Clark KTM32-1 3 Pole Contact Kit for Type TM Control Starter Size 2
Joucomatic 52000196 Solenoid Valve
JOVYATLAS JTP 1500 CPU UPS System Device 120V 1.5kVA 1PH
Joy Cutter Punch Photo Cutter
Joy Photo Cutter
Joy PhotoCutter
Joyce Hydraulic Scissor Lift Table 10000lb 5 Ton 40" Travel 36x60" 230/480V 3Ph
JQ15PPFF Pump
JRC CMC-634 H-7PCRDII64D (PC750I) DEFLECTION BOARD PCB FOR RADAR
JRC CMC-634 H-7PCRDII64D (PC750I) Déflexion Board PCB Pour Radar
JRC CMC-634 H-7PCRDII64D (PC750I) Desvío Placa PCB Para Radar
JRC CMC-634 H-7PCRDII64D (PC750I) Distraction Plate PCB For Radar
JRCS GMS-M202A A/D MODULE
JRCS GMS-M202A Module A/D
JRCS GMS-M202A On/D Module
JRCS GMS-M203A Frecuencia Módulo
JRCS GMS-M203A FREQUENCY MODULE
JRCS GMS-M203A FREQUENCY MODULE
JRCS GMS-M400A DI/0 MODULE
JRCS JEC-21M ENGINE CONTROLLER
JRCS RES-101A-3 POWER UNIT
JRCS RES-104 POWER SUPPLY
JRCS RES-104-2 POWER UNIT
JSW EPAC-RDU 3-6M62002-0 Board
JSW EPACS-3000 PN-G 2-1580411B Circuit Board
JTopsUSA Jet Black Top Sunshade W/ Port For Jeep Wrangler JLU
JULABO 8901105 EasyTemp Professional Control Software, Control up to 24 devices
Julabo Corio CD-BC4 Heating Circulator With Stainless Steel Tank 20-150°C 115VAC
Julabo Corio CD-BC4 Heating Circulator With Stainless Tank 20-150°C, 115VAC 10A
Julabo F25 Cooling Water Bath Cooling Unit 230Volt AC 2500 Watt 92306253
Julabo F25 Cooling Water Bath Cooling Unit 230Volt AC 2500 Watts Julabo 92306253
Jumbo Drive DRCAP-U-J Heavy Duty U-Channel Sign Post Driver Cap For 3-4LB Posts
JUMO 202545/10-888-000-22-00/000 202545108880002000000 Controller
JUN-AIR 1203310 120R-40B Rocking Piston Compressor 2HP 5.5CFM 120psi Max 230VAC
Jun-Air 24-40 Oil Lubricated Compressor 4-Pump 230VAC 1Ph, 120psig, 8.48CFM, 40l
Jun-Air 600-5M Oilless Compressor Vacuum Pump 5L .67Hp 230V 120PSI Quiet Cabinet
JUN-AIR OF1201-25MQ2 Oil Less Rocking Piston Laboratory Compressor 230VAC 6CFM
Jungheinrich 20-200 16636 Driver Control Unit Jungheinrich Ekx Schmalgangstapler
Jungheinrich 20-200 16636 driver operating unit Jungheinrich EKX narrow aisle forklift
Juniper Networks EX4300-48T 650-044931 48-Port Gigabit Network Switch w/ 2x PSUs
Juniper QFX5100-48S-3AFI Ethernet Switch QRX5100-48S -
Juniper SFC IPUIBVUMAC Port Module 611-063980
Juniper SFC IPUIBVUMAC Port Module Juniper 611-063980
Justek JSMD-04D JSMD04D PWM Amplifier w/ breakage on terminal
Justek JSMD-04D JSMD04D PWM Amplifier w/ Scratches
Jusung Engineering JS-PMC-244C JSPMC244C
Jusung Engineering JS-S0L-2442C JSS0L2442C Controller
Jusung J-ZP004600 A308DM01401 TC ASSY WSCNNB
JX-60L JX60L
JYSCO JY7810DA C-Scanner Cleaning
JZMMC-PI41A DF8304709 Board
JZMMC-PI41A DF8304709Board
JZRCR-YSV02-11 Servo Driver Controller
JZRCR-YSV02-31 Servo Driver Controller
JZRCR-YSV02-41 Servo Driver Controller
JZRCR-YSV03-33 Servo Driver Controller
K O Lee Co Surface Grinder Manual Z Axis, 8" Wheel, 14" Travel, 208-230VAC, 2HP
K&S 0800-1110-000-08 X motor cable for k&s 8028 wire bonder
K&S 09004-140632 09004-140631 Maxum Controlller Board
K&S Kulicke & Soffa 08001-4261-001-03 08001426100103 Board
K&S Kulicke & Soffa 08001-4261-001-03 08001426100103 Board
K&S Kulicke & Soffa 8001-4105 80014105 X/Y AMP Board w/ Breakage
K&S Kulicke & Soffa ESI AIS-640/266 AIS640266 Vision Processor Module Board
K&S Kulicke & Soffa MAxum Plus Airpot 78642-1 786421 Assy
K&S MAXUM PLUS 08089-1025-000 080891025000 Power Supply