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
THK LINEAR BEARING ,LM GUIDE ,HSR15R2UU330LH
THK LINEAR BEARING ,LM GUIDE ,SR15W1UUC1M200LHMS
WATERS ACQUITY UPLC CSH Phenyl-Hexyl 1.7µm, 2.1 mm X 50mm Column , pn 186005406
WATERS ACQUITY UPLC CSH Phenyl-Hexyl 1.7µm, 2.1 mm X 50mm Column , pn 186005406
HEIDENHAIN, PP 10R , 280 985 01
SIEMENS OUTPUT MODULE 6ES5 451-7LA11
Nemic TDK - Lambda PH100F 24-12 DC-DC Power Module , in: 24VDC , out : 12VDC
Lot of 9 SMC CQ2812-F2330-10 AIR CYLINDER
SMC ZX1101-Q35L-F-X328 pneumatic valve
Parker Kuroda Cylinder/Solenoid Valve XCHA7-12D-10
INTEVAC INC 0083443400-02 FIBER CABLE , GLASS , VACUUM ,FIBERGUIDE Inc CB16891-2
INTEVAC INC 0083443400-01 FIBER CABLE , GLASS , VACUUM
Surpass Eddysonic Flowmeter ESF-10
IDEC Pushbutton Illuminated Switch ALW29920GP ALW29920RP
Keyence AP-V42 With AP-41 Pressure sensor
Olympus A 60 , 0.8 , 160/0.17 Microscope Objective Lens
Olympus A 60 , 0.8 , 160/0.17 Microscope Objective Lens
SMC CDG1BA50-90 Cylinder
BECKHOFF EL9512 Power Supply Module
Microchip PICkit 2 USB Development Programmer and Debugger with Extra
Siemens RDF310.2 Flush Mount Room Thermostat
Oriental Motor Vexta OPX - 1 Operator Interface Unit
Oriental Motor Vexta OP200A Operator Interface Unit
Lot of 10 BOC Edwards NW50 centering ring (VIT)
Analogic FAST 12S-1-1-4E 12 Bit Data Acquisition Board
Mitsubishi A3NMCA - 2 Memory Module
Mitsubishi A3NMCA - 2 Memory Module
Panasonic PANADAC 916 Fiber Sensor
Panasonic PANADAC 917 Sensor unit
Panasonic PANADAC 917 Sensor unit
Panasonic PANADAC 919A Sensor unit
Panasonic PANADAC 919A Sensor unit
Panasonic Panadac 915R-S photoelectric switch
Panasonic Panadac 917E Photoelectric switch
Omron E3X-DA11-N Digital PHOTOELECTRIC AMPLIFIER
Panasonic Panadac N447PTAS8 Pressure sensor PTAS8
APPLIED MATERIALS 0010-77787 IDLER ASSY HVM 300MM
KEITHLEY PIO-HV 14242 REV 2 PCB8382 PCB DIGITAL I/O BOARD 24 BIT
OZAK LFDK30UU linear bearing
Hawke 501/453 UNIV D M50 Cable Gland
Hawke 501/453 UNIV D M50 Cable Gland
OMRON E3S-AT11-D with E3S-AT11-L PHOTOELECTRIC SWITCH
Oriental Motor PK513PA Motor with cable
Shimadzu 228-14167-11 BEARING , LC-6A
Shimadzu 228-14167-11 BEARING , LC-6A
Idec XW1E-BV402MR E-Stop Button with Omron A22Z-EG1 Shroud ,
Idec XW1E-BV402MR E-Stop Button with Omron A22Z-EG1 Shroud ,
Lot of 100 NMB 608DSD28 bearings
Lot of 100 NMB 608DSD28 bearings
Lot of 12 DIXON GL330 0-100 PSI , 2 1/2" Face , 1/4" Lower Mount
5 Motorola MC10H171P Dual Binary to 1-4 Decoder
Lot of 100 Motorola MC10H117P Dual 2-Wide 2-3-input OR-AND/OR-AND Gate
SIEMENS SIMATIC 6ES7 307-1BA00-0AA0 Power supply
SIEMENS 6ES7 321-1BH02-0AA0 SIMATIC S7 INPUT MODULE
SIEMENS 6ES7 321-1BH02-0AA0 SIMATIC S7 INPUT MODULE
VEXTA ORIENTAL MOTOR PH564M-NBA STEPPING MOTOR 5-PHASE
PEPPERL FUCHS Z964 BARRIER SAFE SNAP BARRIER 71798
OMRON E3T-FD11 ULTRACOMPACT PHOTOELECTRIC SENSOR
OMRON E3T-FD11 ULTRACOMPACT PHOTOELECTRIC SENSOR
Sunx DP2-42Z LED Display Digital Pressure Sensor
Oriental Vexta PK268-03B Dual Shaft 1.8° per Step , 2-Phase Stepping Motor
Vexta PK243A1-SG7.2 Stepping Motor
THK SHS-20C LINEAR BEARING BLOCK LM GUIDE
CONTROL TECHNOLOGY CORPORATION 2203SRC Sourcing Module
CONTROL TECHNOLOGY CORPORATION 2203SRC Sourcing Module
ASM FICO 4552.143A Board ARA 488D , A.S.M.
ASM FICO 4552.143A Board ARA 488D , A.S.M.
Yaskawa SGMAH-02AAA41 servo motor
Yaskawa SGMAH-02AAA41 servo motor
Granville Phillips 275 Mini-Convectron Catalog# 275856 - EU NW16KF FLANGE
Granville Phillips 275 Mini-Convectron Catalog# 275856 - EU NW16KF FLANGE
Autoclave Engineers 20UFX9966 9/16" UNION COUPLING 316SS 20,000 PSI
SIEMENS 6ES7 138-4FB03-0AB0 DIGITAL OUTPUT 6ES7 193-4CG20-0AA0 Terminal Module
SIEMENS 6ES7 138-4FA04-0AB0 Module With 6ES7 193-4CG20-0AA0 Terminal Module
Synax B520035G card
Synax B520035G card
Restek 21106 Vu2 Union® fits column ID 0.32mm
Restek 21106 Vu2 Union® fits column ID 0.32mm
Shimadzu 228-23490 3-Way Valve Stator
Shimadzu 228-23490 3-Way Valve Stator
Oriental Motor CSD5814N-P Servo motor Driver
1 Piece Nikon CFI 10x/22 Microscope Eyepiece
1 Piece Nikon CFI 10x/22 Microscope Eyepiece
OptoSigma TAR-34601 Stage
SIEMENS SIMATIC PXI300 3RG4141-6AB03 Inductive Proximity Switch
EATON Cutler Hammer OPTC5 dv 9000X Series Com Card Profibus
EATON Cutler Hammer OPTC5 9000X Series Com Card Profibus
YUKEN kogyo Direction valve T-DSG-01-2B2B-D24
Lot of 10 NW40 centering ring Xiton SST
Lot of 10 NW40 centering ring Xiton SST
Lot of 10 BOC Edwards NW25 centering ring
Lot of 10 BOC Edwards NW25 centering ring
BECKHOFF EL1018 Digital Input Module
KEYENCE FS-N11MN Digital Fiber Optic Sensors
Yaskawa SGMAS-02ACA21 servo motor
Yaskawa SGMAS-02ACA21 servo motor
Lot of 10 San Ace 40 109P0405M601 DC 5V 0.12A 3Pin Chassis Cooling Fan
Omron KM20-CTF-400A Split Type Current Transformer (CT) Sensor
CKD AMDZ1-8BUR-04-4-TC TEL 012-012616-1 VALVE
0 VN750B5 by ST Semiconductor
HUBA Control 501 .930003111W pressure transmitter
HUBA Control 501 .930003111W pressure transmitter
Omron E5CN-Q2MTC-500 Temperature Controller
Conexant 4 CH CCTV BNC Security Surveillance card PCI-8604PW
Conexant 4 CH CCTV BNC Security Surveillance card PCI-8604PW
0 SUNX PM-R24 U-shaped Micro Photoelectric Sensor
Lot of 10 FUJI SEIKI FK-1008M-S Energy Absorber , Stroke 8mm
TOKICO VORTEX FLOWMETER FUBB3A-KW-BCA-TX1
TOKICO VORTEX FLOWMETER FUBB3A-KW-BCA-T
TELEBYTE MODEL 268 OPTICALLY ISOLATED INTERFACE RS-232
Parker Veriflo F9MT4V-EP
Lot of 18 Motorola MC10H351P Quad TTL/NMOS to PECL Translator
Lot of 15 Motorola MC10H181P 4-Bit Arithmetic Logic Unit/Function Generator
PEPPERLFUCHS KFA5-SR2-Ex1.W ISSOLATOR RELAY
OptoSigma TAR-34601 Stage ( )
BIOPAC MEC110C C-Series Biopotential Amplifier to Touchproof Cable
BIOPAC MEC110C C-Series Biopotential Amplifier to Touchproof Cable
5 Motorola MC10H116P Triple Line Receiver
5 Motorola MC10H116P Triple Line Receiver
5 Motorola MC10H188P Hex Buffer with Enable
5 Motorola MC10H210P Dual 3-Input 3-Output OR Gate
Keyence PS-05R PS-05T
Honeywell MLH250BSL01B Pressure Sensor
OMRON E2K-C25ME2-5 Capacitive proximity switch
Eicon EiconCard S51/S50 800-261-05 ISA Card
EXCLUSIVE DESIGN ASM 8955 PCB BOARD CARD ASSEMBLY
EXCLUSIVE DESIGN ASM 8958 PCB BOARD CARD ASSEMBLY
EXCLUSIVE DESIGN ASM 16882 DIG . SIG . I/O CARD
EXCLUSIVE DESIGN ASM 16882 DIG . SIG . I/O CARD
EXCLUSIVE DESIGN ASM 16689 EXP I/O CARD
EXCLUSIVE DESIGN ASM 16689 EXP I/O CARD
GRANVILLE-PHILLIPS 275507-EU CONVECTRON GAUGE