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。
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Rheodyne 700000562, 2790 Sample Loop 500ul
Cameron 2090526-01 Rubber Buffer Seal Ring Rev 04
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mar 115-12-8 Regulated Linear Dc Power Supply 400-0125-0
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Henix Ma45a12-tm Temperature Controller Dc12v 100ma
Waters 700000150 Panel Mot Filter Assembly
Waters 430001570 Tubing Assembly, Capillary with frit 25u X 10”
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Waters 405003468 Critical Clean Plger
Waters 405001338 Needle Injector
Eberle 0511 15 200 000 Programmable Controller w/ PCB
Spjetri SDB-2 Two-Circuit Net Insulation Resistance Monitor Alarm
Waters 700007794 Seal Ring
Aker SKD T-20 Seal Kit for Clamp, Wrench
Endresshauser 50W3H-UD191AA098AW Electromagnetic Flow Meter IP67
Xiamen Seekbest Technology SB-8620D3 CATV Signal Amplifier
EEV M5187 Magnetron 9800261
ABB 1SVR011718R2500 Analog I/I Signal Converter 4…20 mA
Sulzer Synoptik 112.045.584.200 Control Panel
WAGO 750-512 2-channel Relay Output
Cisco 2800 Series 2801 Integrated Services Router 5A 100-240V~ 50/60Hz
YORK SEA 1190 Power Supply Module Sco 1436-002
HANS BUCH OR10J-2
Siemens Simatic S7 1P 6ES7 307-1EA00-0AA0 Power Supply with PLC Modules ET 200M
HAM-LET HMB21-4VKLCLC-GF4 Valves Manifold
BHEL 0660 Dvr Card Module
Cisco CATALYST 2960 Series 24 Port Switch WS-C2960-24TT-L 100-240V~ 1.3-0.8A
Selco M1000-24-00B Alarm Annuciator 24 Volt 305749
SE5016/SE5116-COM Port Driver Module
C13.2 C12.2
Siemens 1P 6ES7 223-1PH22-0XA0 Digital Input/Output EM 223 Module
HETRONIC SSTA1 Printed Circuit Board
ABB 1SAP130300R0271 PM573-ETH Ethernet LCD Processor Module 512Kb
VIPA 115-6BL01 DI 8XDC24V DO 16XDC24V 1A CPU Controller
Fuji Electric OPC-E1-PG3 Printed Circuit Board SA539984-02
Vicor VI-2W3-EV/B1 Converter Module 2247-1000 24Vdc 200W
Vipa 115-6BL02 DI 16(20) XDC24V, DI 8XDC24V, DIO 4/DO 4XDC24V CPU Controller
K 2003.B Printed Circuit Board
Wabco 3526021400 Pneumatic Directional Valve
MOXA EDS-408A-MM-SC Etherdevice Switch 1201408100021
Cavotec MC-3000-EX Remote Control 220VAC
Mitsubishi Electric FXPDM01-B Pulse Distributer Module
Omron SRT2-OD16T-1 Remote Terminal 24V DC
AAEON PCM-6892 REV.A1.0 Embedded Board
Pepperlfuchs KSD2-TI-EX iversal Temperature Converter 41104S DC20-30V
Cavotec Micro-Control MC-3000-EX Remote Control 220 VAC
Solar Biotronic Laboratories Operational Console
EAPL M2-12 Programble Annciator
Pepperlfuchs KFD0-CS-EX1.51P Current Driver/Repeater 72147
Pepperlfuchs KHD2-CR-1.P.30-200 Transformer Isolated Repeater 71604 20-35Vdc
Selco M1000 Alarm Annciator M1000-24-00B
ope 44-2262-R92-875 Single-stage Pressure Regulator 400 PSI
DTS Lighting XRB-01 A 05 - 2 x 18/20w
UW-MTX3.5EC Protection Control it CL90700 24Vdc
HAM-LET HMB21-4LKLCLC-GF4 Dual Head Valve
LT ZD23638 Fcomp-display Base Card
ABB NGDR-03C Inverter Driver Board 57619104E
ABB EL3020 Gas Analyzer 100-240V 50-60Hz
FAW ELECTRONICS CC-PSU Printed Circuit Board
ABB 57619104E Inverter Driver Board NGDR-03C
ABB NINT-73C Main Circuit Interface PCB 61431390C
Norcontrol SAU 8810 Signal Acquisition it VT25-373-99/X9
SIGNALCO WM 24/65 M
Norcontrol SAU 8810 Signal Acquisition it VT25-373-99/X9 3A 20-60Vdc
HETRONIC BMS-1 Circuit Board
Landis GYR LAE10 Burner Controller LFE10
ABB ACS 600 AC Drive ACS60100256000D1200901
LT 510202 Printed Circuit Board
Portenseigne 02 487 04
Pr Electronics 2284 B0D1 Isolation Amplifier 24Vdc 2.4W
Pr Electronics 2204X2 Isolation Amplifier 24V 1.3W
WTW COND 3210 Profiline Portable Conductivity Meter
Pr Electronics 2204X2 Isolation Amplifier With MT78740 Socket Base 24V 1.3W
R. Stahl 8901/32-016/320/00 Safety Barrier 250V
Parker 8A-C8L-1/3-T-SS Poppet Valve
Siemens 950 5611 02B Printed Circuit Board 950 5612
Siemens 950 5611 02B/ 950 5612 Printed Circuit Board
Rexroth 3 608 860 254/0 608 830 165 Profibus Smpdp Dp Module
Boll Kirch 4.36.2 Differential Pressure Indicator
Siemens 950 5614 02-2/ 950 5615 Printed Circuit Board
Allied Telesyn AT-MC101XL Fast Ethernet Media Converter Rev.C
GE Fanuc IC200MDL640F Input Module 24VDC POS/NEG GRP 16PT
Merlin Gerin SEPAM 100 Control Panel S01 MI X02 X01 XHN
Gain Guard VSP-2 Single Phasing Preventer
Hlplanar Technik NS-45/PI-260 Inclinometer
Rosemot 3500P-HT-01-10-21-30 PERPH-X RTD PT100 Sensor
Mipeg DI-130 P02 000 Safe Load Indicator 12V
Siemens 1P 6SL3000-0BE31-2DA0 Basic Line Filter 3AC 380-480V 50/60Hz 192A
Siemens 6SL3000-0BE21-6AA0 Line Filter 480/275V 45-65Hz
Luxmatic SARCMI-GV4 Printed Circuit Board CS 10.87.1
Test Fction In OP.Mode Stop Water Pump
Mecman 563-201 000-1/ 563-441 000-1 Air Pilot Valve
Megacon KPM 163 Earth Fault Guard 230V
Megacon KEC112E 3 Phase Short Circuit Guard
Waters Hlb Cartridge
Megacon Kec 115 3 Phase Short Circuit Guard
Megacon KPVA171B Bi-Directional AC Power Guard 0,2-0-2 Mvar
Allen-bradley SLC500 Output Module 1746-0B16 Ser: D
Weidmuller RS Interface Board
Norgren F17-800-A3DA General Purpose Filter 250Psig
Rosemot 9240039-01/E PH/ORP Accuglass Sensor 399VP-09
Mecman 563-201 000-1 Air Pilot Valve 563-441 000-1
GP:50 370IDRWDKNG Pressure Transducer
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