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 TLC-005-024DC-MOD-A-ES5R-12-D-0400 Controller 24VDC
THK,HSR20A1SS/GK HSR-20,LINEAR BEARING NOS
THK,HSR30YR1SS GK,LINEAR BEARING BLOCK NOS
THK,SR45,LINEAR GUIDE 1/2IN NPT 4-1/4IN LENGTH 3-3/8IN WIDTH NOS
THOMAS & BETTS,BROWN 87,COMPRESSION LUGS 90° LONG BARREL BOX OF 6 NOS
Thomson 2DB12OUBBL24 Linear Actuator Guided Ball Screw Stroke 14.98" Lead 0.2"
Thomson 2DB16-100458 Linear Actuator Guided Ball Screw Stroke 6.46" Lead 0.2"
Thomson 7828137 Ball Spline-Outer Race Only 2.5"
Thomson 8115-448-049 RH Turn Precision Ball Screw And Flange Ass'y 8" Travel
Thomson Linear 27-319374-F770 VTR014-050-0-RM142-71 14 Planetary Gear Head 50:1
Thomson Linear UTR006-005-0-RM060-1 Micron Right Angle Gearbox, 5:1, 60mm Frame
Thomson Linear VTR014-050-0-RM142-71 Right Angle Planetary Gearhead 50:1 Ratio
Thomson Micron 42-314289-B732 UltraTRUE 10 Servo Gearbox 25:1 Ratio
Thomson Micron NT42-010-POO-Q NEMA True Planetary Gear Head 10:1 Ratio Size 42
THOMSON MOVOPART,M-75,LINEAR ACTUATOR UNIT MF07BSXXXX-00745-0111DN-0000 113MM N
Thomson SSU PB 12 SSUPB12 Super Pillow Block
Thomson SSU PB 12SSUPB12 Super Pillow Block
Thomson TG07B130-A00X057 Linear Actuator, Belt Driven, Stroke: 303mm, 130mm/Rev
Thomson UT075-007-0-RM075-37 Planetary Gearbox 7:1 Inline Gearhead Reducer
Thomson UTR006-005-0-RM060-11 Planetary Gearhead, 5:1, ø3/8in Bore, ø16mm Shaft
THORDARSON,21F12,FILAMENT TRANSFORMER NOS
Thorlabs CS2010 UV Curing LED System, 365 nm, UNIT IS NOT IN GOOD COSMETIC COND.
Thorlabs LDM38TE-Cooled Mount for Ø3.8mmLaser Diodesw/LDMXYFlexure NICE
Thyssen Krupp MH4-GT Control Board Thyssen STUW 050414 + Module 336 Basic SP1.1
Thyssenkrupp AY Inverter CPI10E Basic V3 Thyssen 66110009219_L D400
ThyssenKrupp AY inverter CPI10E Grund V3 Thyssen 66110009219_L D400
Tilt Hydraulic Cylinder 600-3710 05/22 BGF2151634
Tilt Hydraulic Cylinder 600-371005/22 BGF2151634
Tilt Trim Motor W/Pump Reservoir 88183A12 For 1974-1984 Mercury Marine
Timken 482-90294 Single Cone Precision Tapered Roller Bearing 2-3/4" Bore 4-8 OD
Timken 74539-D-K Double Row Tapered Roller Bearing Cone 4.97"ID 4.87"Cone Width
Timken 74539TD Double Row Tapered Roller Bearing Cone 4.97"ID 4.87"Cone Width
TIMKEN TORRINGTON,CR-16 CAM FOLLOWER NOS
TIMKEN TORRINGTON,CR-16 CAM FOLLOWER NOS
Timken Y32216 Tapered Roller
TIMKEN,05075,PRECISION ROLLER BEARING CONE NOS
TIMKEN,05075,PRECISION ROLLER BEARING CONE NOS
TIMKEN,05079,PRECISION ROLLER BEARING CONE NOS
TIMKEN,05079,PRECISION ROLLER BEARING CONE NOS
TIMKEN,13890-13830 90014,PRECISION ROLLER BEARING NOS
TIMKEN,208KDD,RADIAL BEARING DOUBLE SHIELDED 40MM BORE LOT OF 3 NOS
TIMKEN,208KDD,RADIAL BEARING DOUBLE SHIELDED 40MM BORE LOT OF 3 NOS
TIMKEN,21075-90010,PRECISION ROLLER BEARING NOS
TIMKEN,3979B-00,PRECISION ROLLER BEARING FULL ASSEMBLY 2-1/4 IN BORE 4.4375 OD
Timken,42381- 90053,Complete Roller Bearing NOS
TIMKEN,48750,ROLLER BEARING CUP NOS
TIMKEN,532,ROLLER BEARING CUP NOS
TIMKEN,623,ROLLER BEARING CONE NOS
TIMKEN,67388,ROLLER BEARING CONE NOS
TIMKEN,67425,ROLLER BEARING CONE NOS
TIMKEN,67675,ROLLER BEARING CUP NOS
Timken,8520/8575,Tapered Roller Bearing Cone and Cup
Timken,93127CD-20081,Tapered Roller Bearing Cup
TIMKEN,A-6162,ROLLER BEARING CONE LOT OF 3 NOS
TIMKEN,GB-108,NEEDLE ROLLER BEARING LOT OF 2 NOS
TIMKEN,L44643,ROLLER BEARING CONE NOS
TIMKEN,L-68111,ROLLER BEARING CUP LOT OF 2 NOS
TIMKEN,LM501310,ROLLER BEARING CUP NOS
TIMKEN,M231649,ROLLER BEARING CONE 6 INCH BORE NOS
TIMKEN,M716649XS,ROLLER BEARING CUP LOT OF 2 NOS
TIMKEN,NA759SW-90161,COMPLETE ROLLER BEARING ASSEMBLY UNOPENED BOX
TIMKEN,P39362,WASHER NOS
Timken,SNW17X215/16,Adapter Assembly
TIMKEN,TAN138,LOCK NUT NOS
TIMKEN,TW138,LOCK WASHER NOS
TIREBOSS 2 Tire Pressure Control Kit, Operator Control Unit, System Control Unit
Tjernlund,UC1,Universal Control 3/4 HP Max NOS
TMC 65-33455-01 Anti Vibration Machine Base, 10,000lbs Capacity, 54 x 48", 80PSI
TMC TMC-7210-2 TMC72102 Temperature Controller
TMCTMC-7210-2 TMC72102 Temperature Controller
Toa Seigyo Kiki Co TFB-080V TFB080V Stepping Motor Driver Defective As Is
Toa Seigyo Kiki Co TFB-080V TFB080V Stepping Motor Driver Defective As Is
TOBII Technology TOBII CEye EYE TRACKER NO A/C ADAPTER NO HDD
Tohken THLS-6922ESD-USB THLS6922ESDUSB Barcode Scanner
Tohken TLMS-750RV-H TLMS750RVH Moving Laser Scanner
Toho Electronics TTM-207 TTM207 Controller
Toho Electronics TTM-207 TTM207 Controller
Toho SC70TVTD1100 Thermostat 30Days Warranty
Toho SC70TVTD1100 Thermostat 30Days Warranty
TOHO TTM-002 TTM002 Temperature Controller
TOHO TTM-002 TTM002 Temperature Controller
TOHO TTM-002-P-ABDN-24 TTM-002PABDN24 Temperature Controller
TOHO TTM-002-R-A-24 TTM002RA24 Temperature Controller
Toki Sangyo TV-10U TV10U Viscometer
Toki Sangyo TVB-10U TVB10U Viscometer
TOKICO EEZ30Y ALARM PANEL
Tokimec B8U Viscometer
Tokimec BM Viscometer
Tokimec BM Viscometer w/ accessories
Tokimec DG5V-H8 Directional Hydraulic Flow Control Solenoid Relief Valve Stack
Tokimec ETPP-M-GHD-10 ETPPMGHD10 Pressure Sensor
Tokimec SQP431-60-30-11-86DDD2-18 Triple Vane Hydraulic Pump 90/46/17gpm 2500psi
Tokimec Vickers EPCG2-01-70-11 Hydraulic Proportional Solenoid Relief Valve
Tokimec Vickers SQP3-17-86D-LH-18 Hydraulic Vane Pump 17-25 GPM 2500 PSI
Tokimec Vickers SQP3-25-86D-LH-18 Hydraulic Vane Pump 25-38 GPM 2500 PSI
Tokimec Vickers SQP41-42-5-86BA-18 Double Vane Hydraulic Pump 65/8 GPM 2500 PSI
Tokyo Electronic CS8322SCC-01 Type TK5217A7 CCD Camera DC12V w/ Cut Cable
Tokyo Keiki AVF-11 AVF-II 0-800A Meter C.T. 800/ 5 A Class 1.5
Tokyo Keiki C2G-805-JA-10 C2G805JA10 Check Valve
Tokyo Keiki EVF-11B EVF11B MW Watt (Var) Meter w/ Breakage
Tokyo Keiki FUG-03-C-JA-10-S92 FUG03CJA10S92 Flow control Unit
Tokyo Keiki FUG-03-C-JA-10-S92 FUG03CJA10S92 Flow control Unit
Tokyo Keiso F97-405910 F97405910 Flowmeter
Tokyo Rikakikai NCC-A NCCA Aspirator
Tokyo Roki 8-97171451-2 897171451 Fuel Filter 30Days Warranty
Tokyo Seimitsu Accretech FA0142E Key Cont Board
Tokyo Seimitsu HA1016A ARM SENSOR
Tokyo Seimitsu LD FFC 1HA1101A Board
Tokyo SUS316 170568 Meter
Tokyo SUS316 221663 Meter
Tokyo Weld TWA-161B Digital Resistor Checker Front Panel Assy
Toledo 743 3000 Lb Load Cell for Industrial Floor Scale 12000 Lb Set of 4
Tolomatic ACST1048ED ACS Stepper Drive/Controller 10/20A Ethernet USB 10-52VDC
Tolomatic B3W10 BWS18 SK33.000 Electric Belt Drive Rodless Actuator, 33" Stroke
Tolomatic BC315 SK57 Pneumatic Cylinder, 1.5" Bore, 57" Stroke, 1454lbs, 3/8"NPT
Tolomatic BC320-SK48-RT2-FM2-AH2 Recirculating Ball Bearing Rod-less Cylinder
Tolomatic MXE63PBN01SM1950 Linear Actuator, 1950mm Travel, 25.4mm Lead, NEMA23
Tolomatic RSA50BN02SK44 Rod Screw Actuator, 44" Stroke, 2TPI, 5355lbs, NEMA 34
Tolomatic SV2048ED ACS Actuator Servo Drive, Ethernet/USB, 10-60VDC 10A
Tom Woods Custom Drive Shaft For Quad 22-1/4" xC WO#34 AR Rear
Tony Burch Walker Small Leather Satchel BlackIn Original Packaging
Top Air Pneumatic 2623077 Solenoid Valve
Top Mount Compressor Bracket Kit for 1999-20 Chevy Small Block Gen III/IV
Topcon BM-3 BM3 Luminance Meter w/ accessories
Topcon BM-7 BM7 Luminance Colorimeter w/ accessories
TOPDON Phoenix PHMDCI Lite Smart Automotive Diagnostic DONGLE ONLY
TOPTICA EAGLEYARD PHOTONICS EYP-MNT-0000-00000-0000-CLP01-9000 ColdPack, Adapter
Tork,Model W300,Seven Day Calender Dial Time Switch
Torklift Fastgun Long Range Spring Loaded Turnbuckle 25"x43" S9529
Tornero Designs 4100949 Kit, Parts for TD-4100 / XD (TD4100 Near U.V. Lights
Toro 138-1417 Dingo Wheel Assembly For Dingo TX 1000 Wide Track