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
H.G. EEKELS TG-1A ELECTRONIC EMERGENCY TELEGRAPH
H.M. STEIN SOHN 970460/A065.200-03300 TELEGRAPH
H.M. STEIN SOHN A065.210-04600 TELEGRAPH 970460/A065.210-04600
H.M. STEIN SOHN E384.1A PCB CARD E384.1B
H.M.STEIN SOHN E188.3 (4) PCB CARD
H.M.STEIN SOHN E420.3A PCB CARD E420.3B
H.M.STEIN SOHN E551.1 A PCB CARD E551.1 B
H.S.S LEAD 3772
HACH 16900 DIGITAL TITRATOR ALKALINITY TEST KIT AL-DT 20637-00
HACH 1720C LOW RANGE PROCESS TURBIDIMETER 44000-10
HACH GT-1 GLUTARALDEHYDE TEST KIT 2587200-00
HAE WON L60MC TOOLS-MOUNT SEALS FOR FUEL PUMP 121-046888
HAGER 40 A TYPE 2 M3 BS 3871
HAGER EV 820
Hager FI circuit breaker CDB 463D 63A
HAGER HC301E
Hager Residual Current Circuit Breaker CDB 463D 63A
HAGGLUNDS 314 2845-001 PCB CARD
HAGGLUNDS 314 2966-001 PCB CARD 3142699-803
HAGGLUNDS DRIVES 376 0003-806 MONITOR CARD 3760001-001A
HAHN V 11752 PRINTED CIRCUIT BOARD TRANSFORMER
HAKKO ELECTRONICS V706MD HMI 24VDC MONITOUCH TOUCH SCREEN 5.7 INCH
HALTEC TGS 6024S-5/15A POWER SUPPLY 18-54VDC 80 WATT
HAMEG HM303-6
HAMWORTHY 363919393 TRANSIENT LIMITER
HAMWORTHY 363920595 SMART SCAN SYSTEM BACKPLANE PCB CARD KIT
HAMWORTHY 363920886 SMARTSYNTH FLAME SYNTHESIZER
HAMWORTHY SMARTSCAN 121 FLAME SCANNER AMPLIFIER 363920587
HAMWORTHY TSXAEY800 ANALOG INPUT MODULE
HAMWORTHY TSXDEY32D2K DISCRETE INPUT MODULE MODICON PREMIUM
HAMWORTHY TSXPSY1610 POWER SUPPLY MODULE MODICON PREMIUM
HAN IL SSC-212 SLAVE CLOCK DC-24V 2000Ω
hand taper second and plug taps TS11928B
HANDHELD 3800LR-13
HANIL DISPLAY HID950814-0308 PCB CARD
HANLA AD-82 ANALOG DIGITAL CONVERTER
HANLA HIC-100 LOOP ISOLATOR
HANLA IMS AU240LMV10 MAIN BOARD
HANLA IMS CT-100M PNEUMATIC MODULATOR
HANLA IMS PCB CARD 05 PSI 2.5 mH2O
HANLA IMS P-I10 V5 PCB CARD 30PSI 21 mH2O PI10V5
HANLA IMS P-I10_V4 PCB CARD 5 PSI 14 mH2O PI10V4
HANLA IMS P-I10_V5 PCB CARD 15 PSI 5 mH2O PI10V5
HANLA IMS P-I10_V5 PCB CARD 15 PSI 7.5 MH20
HANLA IMS P-I10_V5 PCB CARD 15 PSI 8 mH2O PI10V5
HANLA IMS P-I10_V5 PCB CARD 30 PSI 13 MH20
HANLA IMS P-I10_V5 PCB CARD 30 PSI 14 mH2O PI10V5
HANLA IMS P-I10_V5 PCB CARD 30PSI 15 MH2O PI10V5
HANLA IMS P-I10_V5 PCB CARD 60PSI 22 mH2O PI10V5
HANLA IMS PL 40 PRESSURE LEVEL TRANSMITTER
HANLA PL40-I LEVEL TRANSMITTER
HANLA PL40-I LEVEL TRANSMITTER 0~8 MH2O
HANLA TMR-E-91A5S-GE-T FLOAT TYPE LEVEL SWITCH
HANS JENSEN LUBTRONIC SYSTEM STB204012
HANSHIN ELECTRONICS HAF-800D MARINE TELEPHONE
HANSHIN ELECTRONICS HAW-700A MARINE TELEPHONE
HANSHIN ELECTRONICS HAW-700E MARINE TELEPHONE
HANSHIN ELECTRONICS HSF-801D3 MARINE TELEPHONE
HANSHIN ELECTRONICS HSW-701A3N MARINE TELEPHONE
HANSHIN ELECTRONICS TCO-400P-012 TEL SIGNAL RELAY BOX BOARD REV 2.1A HSR-032
HANSHIN HAW-700C MARINE TELEPHONE
HANYOUNG BR6-HAK TEMPERATURE CONTROLLER MODULE
HANYOUNG NUX BS6 AMMETER BS6-ND21-1
HARBOUR AND MARINE ENGINEERING LDIS-002 MASTER PCB CARD REV.E
Hardy Process Solutions HI1734-WS Point I/O Series Weight Processing Module
HAREID ELEKTRISKE INDICATION FIRE DOORS
HARLAND SIMON INTELLA 310 H4893P4073 PLC MODULE
HARMER SIMMONS 3AW01092AAAA01 PCB CARD 3AW15513AAAA01
HARTING 09320323101
HARTING CONNECTOR SA
Harting Ha-VIS eCon 3050GBT-A-P | 24034050020 unmanaged Ethernet switch (5-port)
HARTING OPTICAL SENSOR RECEIVER FRG00021
Hartmann & Braun Elima Microampere Moving Coil Indicator H 96N / 4017 0657/0002
Hartmann & Braun Elima Microamps Rotary Coil Indicator H 96N / 4017 0657/0002
HARTMANN & BRAUN SENSYCON SENSYFLOW VT2-EX
HARTMANN & BRAUN TGM 5 ANGULAR POSITION TRANSMITTER 14436-0-1872130
HASCO 10 STCK Z 31 / 8 X 70
HASCO 20 STCK Z 31 / 6 X 40
HASCO Z441/1.2*200 2706
HASKEL 51940-1 AIR PILOT SWITCH
HASYTEC PM.PRP 1-8 DYNAMIC BIOFILM PROTECTION DEM20485
HATENBOER WATER 1041-PRINTL2 PCB BOARD LAMBDA 2 CONTROL REV 3
HATLAPA 2MVR2 WINCH VALVE CARD MAGNETSTROMREGLER HA01-10
HATTELAND 20.1 INCH TFT DISPLAY JH 20T06 KMP-A1-10144
HATTELAND HTB18STDA115-10 STAND ALONE COMPUTER 60W MAX
HATTELAND JH 20T06 MMD-A1-10990 MARITIME MULTI DISPLAY
HATTELAND JH17T02MMD-A1-11167 17,0 INCH TFT DISPLAY
HATTELAND STAND-ALONE COMPUTER HTB18STDA115-16
HAUSER HDX70C4-44S SERVO MOTOR, 8000 RPM, 350V, RESOLVER, 15-B
HAUSER SM-078-V11 TRANSISTOR BD PCB
HAVER & BOECKER D-593020ELDE (We have more in stock need more contact us)
HAWE ADM 33 CR PRESSURE REDUCING VALVE
HAWE EV22K1-24 PCB CARD 6217 8013
HAWE EXNG 3-1R-G 24EX-10M DIRECTIONAL VALVE
HAWE EXNG3-1R-G24 EX55FM-10M DIRECTIONAL VALVE
HAWE HYDRAULIK 6217 8012 PCB CARD KH 7817 900A
HAWE HYDRAULIK EV22K5-12/24 PROPORTIONAL AMPLIFIER CARD 6964000909
HAWE R2,7 REDIAL PISTON PUMP 700 BAR 710 PYD
HAWKE PL615 JUNCTION BOX IP66
HAWKER ELECTRONICS KC2/KC1P RELAY PCB CARD
HAWKER FUSE BAO63M80
HAYSSEN SPM-BA108600 CONTROL CARD CLUTCH BRAKE
Hbc-radiomatic FSE 516, TC241, AZ-PI-RB, Radio System, Transmitter, Receiver, Micron 5
HBC-RADIOMATIC SPECTRUM 3 INDUSTRIAL REMOTE-CONTROL
HBC-RADIOMATIC SPECTRUM EEX FSE 727 REMOTE CONTROL AND RADIOBUS RECEIVER KIT
HBDIM PCB CARD E 3495
HBM MP60 CARRIER-FREQUENCY MEASUREMENT MODULE MP60DP
HBM SB01A ZENER SAFETY BARRIER COMBINATION - 2X PEPPERL&FUCHS Z7664 & 1X Z763
HCS DMA-2 DIGITAL AMPLIFIER MODULE DMA-22-01-080-X-SHAWE
HCS DMA-2 EXT-PB DIGITAL AMPLIFIER & CONTROL MODULE DMA-22-01-080-X-SHAWE-SB-PDP
HDI 20B7A50154002AAA PRESSURE GAUGE 0-16 KPSI
HDI 2204220-0014-501-FD CHOKE POSITION INDICATOR
HDI FAB2100M485PNLAA PSC PIEZO PANEL 4BTN FOR PUMP STROKE COUNTER
HDI FRONT PANEL FOR PUMP STROKE COUNTER C FAB2100M485PNLAA
HDI HDI20001000STDAA SENSOR 1000 BAR PILL ASSEMBLY
HDI HDI2000A330PNLAA CONTROL PANEL MEMBRANE FOR HDI 2000B
HDI PRESSURE TRANSMITTER 2023A00068002A-AX
HE ELECTRONICS 71.7320.01 PCB CARD
HECKLER & KOCH AK+ 113476
Heckler & Koch ZPL-081652
Hegemann MN6-65 410 56 010/SNT245, MN6-6541056010/SNT245, , Tested
HEIDENHAIN 19137586 4 POSITION ENCODER
Heidenhain 331876-06
HEIDENHAIN CORP 226 520 F1
HEIDENHAIN CORP 331926-01
HEIDENHAIN CORP 383963-03
HEIDENHAIN CORP AE-LS-486
HEIDENHAIN CORP ERN 1331.061-1024
HEIDENHAIN CORP LS 623
HEIDENHAIN CORP ROD 426.0000-2000
HEIDENHAIN CORP ROQ 425 512 03S17-E0 K
Heidenhain Division Drum ERM 200C 2600 R20 A17 / 391089-02