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。
keyence OP-84231 Remote Controller ship /DHL
20 DO9321 Module
Keyence SC-S11 Safety Controller
Q-Light ST56L-BZ-3 LED TOWER LAMP With Buzz 24V
OpNext SFP 8GFC SW TRS2200SM-0001 Transceiver
Beckhoff EK1110 EtherCAT Extension Terminal ship Express
Beckhoff EL2904 | EtherCAT Terminal 4-channel digital output 24 V DC
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Datalogic GBT4500-HC-WLC Wireless 1D 2D Bluetooth Barcode Scanner
EON E5-2680V3 SR1XP 2.50GHz LGA2011-3 12 Core Processor
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Schneider 1072421 10mm M72x0.75 Extension Tube
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FESTO -16-270-P-A-B ROTARY ACTUATOR
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Omron E32-D15Z Photoelectric Switch Fiber it
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Original YAMAHA RAV350 WD10830US REMOTE CONTROL For RX-V1500 HTR-5890 DSP-AX1500
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VIRTUAL STEALTH-VAC Normally open Vacuum Pen 70 PSi Compressed Air or Nitrogen
YAMAHA RAV255 WE45880 EU REMOTE CONTROL FOR RX-V557
SENSIRION LS32-1500 Liquid Flow Meter
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Original Yamaha MCX4 WF13830 Musiccast Remote Control for MCX-2000 Music Server
lot of 8 Phoenix Contact PLC-BSC-24DC/21 ART:2966016 Relay 2961105 6A/250
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YAMAHA RAV351 WD10840EU REMOTE CONTROL For RX-V1500 HTR-5890 DSP-AX1500
YAMAHA RAV220 V456560 For DSP-AX1 RX-V1 RX-V1GL DSP-AZ1 REMOTE CONTROL
Genuine YAMAHA RAV221 Receiver Remote For RX-V3000 RX-V3000GL RX-V3000RDS
Genuine Yamaha RAV495 ZF30360 For RX-V500D RXV500D AV RECEIVER
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SMC ZSE30A-C4H-N High Precision Digital Pressure Switch 0 to -101kPa NPN
SMC SRH3000-N02 Pressure Regulator Valve
KEYENCE LV-21A Amplifier it
YAMAHA RAV570 Remote Control AV Receivers RX-V685 RX-A780 RX-A880
GENUINE YAMAHA RAV554 ZW69520 REMOTE CONTROL
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2PCS NIPPON CHEMI-CON 71V 18000UF Audio Capacitor
Original YAMAHA RAV359 WF36570 EX REMOTE CONTROL ship
Original YAMAHA RAV361 WH254420 EX REMOTE CONTROL
Agilent 8765B Opt 024 100 DC-20Ghz COAXIAL SPDT SWITCH
2 PCS FESTO YSR-C YSR-7-5-C 160272 Shock Absorber ! !
METCAL OKI SSC-722A REPLACEABLET CARTRIDGE TIP SET OF 2
METCAL SMTC-105 REPLACEABLE CARTRIDGE
METCAL OKI SSC-726A REPLACEABLET CARTRIDGE TIP SET OF 2
Compaq Alpha 21264C IB21264C-1250TPN
Original Yamaha EADP-38EB A15V Power Adapter UIB345-1530 T345-1530
METCAL STTC-836 REPLACEABLET CARTRIDGE TIP SET OF 2 MADE IN USA
LSI BAT1S1P-A MR iBBU09 Battery For MegaRaid 926592669270927192859286
YAMAHA RAV353 WD10860EU RX-V2500 RX-V2600 RX-V3800 REMOTE CONTROL ship express
YAMAHA RAV357 WF36550 EX REMOTE CONTROL RX-V1600
WEINSCHEL 3M-40 DC-12.4GHz 40dB Attenuator
Maxon 226333 DC Motor 4022-594-1180.1
ALLEN-BRADLEY 20BD014A3AYNANC0 POWERFLEX 700 AC DRIVE SER B
ZEISS 000000-1051-886 PROBE HEAD. RST-P 5476
YASKAWA, JZNC-T824L MOTOMAN ERC TEACH PENDANT
YASKAWA JZNC-T824L MOTOMAN ERC TEACH PENDANT
MITUTOYO SJ-210 TESTER
FANUC A81L-0001-0164 REACTOR
LENZE. E84AVBDE3714SX0, 8400 BASELINE D INVERTER DRIVE
HEIDENHAIN PWT10
VAISALA HMT330 5L0A001BCAX100B01AABAA1 HUMIDITY/TEMP TRANSMITTER
WORLD ENCODERS PHD-100-E-6-T-EN, HAND-HELD PENDANT
PRO-FACE TEACH PENDANT GPH70-SC11-24V
FANUC 44A739028-G11R00 I SERIES OPERATOR PANEL INTERFACE KEYBOARD
MITSUBISHI GT1455HS-QTBDE GRAPHIC OPERATION TERMINAL
BROWN SHARPE 203-193-CE TEACH PENDANT JOYSTICK
SYNTRON POWERPULSE ELECTRIC CONTROLLER Power pulse FO/PT#225484-A
SYNTRON POWERPULSE ELECTRIC CONTROLLER Powerpluse FO/PT 225484-A
WATSON MARLOW RENU 30 SANTOPRENE PFPE PUMPHEAD 7BAR 100PSI
SIEMENS 6ES7 141-6BG00-0AB0 DIGITAL INPUT MODULE
NEXEN MODULAR 928800 IT
ALLEN-BRADLEY 2711-M3A18L1 PANELVIEW 300 OPERATOR PANEL, CANT TEST ship
STANLEY 21A108725 CONTROLLER
ROSEMOT 3051CG4A22A1AS7B4K5M5Q4 EXPLOSION PROOF PRESSURE TRANSMITTER. 300
IFM O1D100 PHOTOELECTRIC SENSOR. O1DLF3KG
ALLEN-BRADLEY 2094-BL02 LINE INTERFACE MODULE
INGERSOLL RAND 99387847R5 CINETIC SPINDLE DRIVE
SICK S30A-4011BA SAFETY LASER SCANNER Part
SICK S30A-6011BA SAFETY LASER SCANNER PARTS
SICK S30A-6011BA SAFETY LASER SCANNER PARTS
SQUARE D 500SV43B TRANSFORMER
SQUARE D 500SV43B TRANSFORMER
ALLEN-BRADLEY, 836T-T252J. PRESSURE CONTROL. 6-75PSI ADJUSTABLE RANGE
BETTIS DS0200.B2D04K.22K0 PNEUMATIC VALVE ACTUATOR. 139844.
FANUC A230-0476-X002 SERVO AMPLIFIER DRIVE
MITSUBISHI MR-J3-40A1 AC SERVO DRIVE IT. 2.8A OUTPUT
AC TECH M1430C DRIVE
METTLER TOLEDO IND331 PANEL MOT TERMINAL
IFM AL1120 I/O LINK MASTER
WEG VECTOR INVERTER USCW080130T3848EON1A1Z
TREGASKISS TA1F083BC1EL TOUGH G ROBOTIC MIG G. 500A .045 WIRE SIZE
ALLEN-BRADLEY 1769-IF4XOF2 I/O MODULE
ROSEMOT 333U TRI-LOOP MODULE
KEYENCE IV-G300CA VISION SENSOR, COLOR, AUTOMATIC FOCUS.
LOVE CONTROLS 16B-33 TEMPERATURE CONTROLLER
WAYNE KERR 3225L CALIBRATION COIL
FANUC, A06B-6079-H103 SERVO AMPLIFIER MODULE
KLOCKNER MOELLER NZMH6-100 CIRCUIT BREAKER
EUCHNER TZ1RE024MVAB SAFETY SWITCH,
YASKAWA ELECTRIC. PG-X2 VARISPEED ENCODER FEEDBACK CARD PCB.
MITSUBISHI HF-MP13 SERVO MOTOR
ABB S6N CIRCUT BREAKER See Pictures
AVATAR INSTRUMENTS A3Z-48-40-R24 POWER SUPPLY
Cole-Parmer Masterflex Console Drive 77521-50 Parts/
SEW EURODRIVE 28229150 INVERTER COMMICATOR OPERATOR PANEL
TURCK CDN-IOM-22-0012 DEVICENT BLOCK
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CCS PD2-3024 LIGHT SOURCE LED POWER SUPPLY
SCHNEDIER ELECTRIC ABL8 RPS24100 REGULATED POWER SUPPLY. 24-28.8VDC. 10-8.33
METTLER TOLDEO M700S TRANSMITTER MODULE
ESCORT MEMORY SYSTEMS CM21 INTERBUS MODULES
COOPER BUSSMAN JCL-4R FUSE
NOVOTECHNIK TR-0075 POSITION TRANSDUCER. 023263
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CKP2118N12 LIMIT SWITCH
KEYENCE GL-T11R SAFETY RELAY TERMINAL
MAGNESCALE DT12P DIGITAL GUAGE PROBE