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
PRO BROADBAND INC. PBI DVR-1000 DIGITAL SATELLITE RECIEVER
Pro Minent UV-AS-U 1030312 2007000000 PCB Card
Pro Minent UV-AS-U 1030312 2007000000 PCB Card With Cable
Pro Minent UV-AS-U 1030312 2007000000 PCB Scheda
Pro Minent UV-AS-U 1030312 2007000000 PCB Scheda con Cavo
Procentec t1 profibus dp active terminator 101-00211a
Process Module REV3.13 22001-05 PCB Card
Processo Modulo REV3.13 22001-05 PCB Scheda
PROCON 8000 1292 INPUT CARD 42162300
PROCON 80001288/1 OUTPUT CARD 4216 0201
PROCON 80001293/3 CPU CARD
Procon Electronics PC7805.1 PCB Card Module
Procon Electronics PC7805.1 PCB Scheda Modulo
PROCOND ELETTRONICA 452200620 PCB CARD 452240170
PROCOND ELETTRONICA 452200620 PCB Tarjeta 452240170
PROCONICS PR0647 ANODE MODULE
Pro-face 2780027-02 GP577R-TC41-24VP
Pro-Face 2780053-02(PL-B900-41-WN10) No options Scratch
PRO-FACE 2880011-02 / GP377-LG41-24V
Pro-Face 2880045-01 GP2500-TC41-24V Black Digital Electronics Panel
Pro-Face 2880045-01 GP2500-TC41-24V Nero Digitale Elettronico Pannello
PROFACE 2880061 GP2400-TC41-24V
Pro-face 2980036-01
Pro-Face 2980078-02 Touch Screen Panel GP2500-SC41-24V 2.08A 24VDC
PRO-FACE 3080028-21
Pro-face 3180021-05 GP2601-TC11
Pro-face 3280035-01 AGP3400-T1-D24
Pro-face 3580205-01 AST3201-A1-D24 [ scratch] Free
Pro-face 3580205-01 AST3201-A1-D24 [] Free
Pro-face 3580206-01 AST3401-T1-D24
PRO-FACE 3580207-01 AST3301-S1-D24
PRO-FACE 3580207-01 HMI GRAPHIC INTERFACE PANEL AST3301-S1-D24
Pro-face 3610006-01
Pro-face AGP3300-L1-D24 3280007-03
PRO-FACE AGP3300-S1-D24
Pro-face AGP3300-S1-D24 3280007-02
Pro-face FP3700-T41 3180040-01
Pro-Face GLC2400T-TFT Black Color Graphic Logic Controller
Pro-Face GLC2400T-TFT Nero Colore Grafico Logic Controller
PRO-FACE GP2301-SC41-24V
Pro-face GP2400-TC41-24V 2880061 Some broken
Pro-face GP2401H-TC41-24V
Pro-face GP370-LG11-24V Grafico Operatore Interfaccia Pannello
Pro-face GP370-LG11-24V Graphic Operator Interface Panel
PROFACE GP37W2-BG41-24V
PRO-FACE GP37W2-BG41-24V
Pro-Face GP470-EG11
Pro-Face GP477R-EG11
Pro-face GP570-TC11
Pro-face GP577R-TC11
PRO-FACE PFXGE4408WAD
PRO-FACE SP-5B10 Caja de Alimentación Módulo PFXSP5B10
PRO-FACE SP-5B10 POWER BOX MODULE PFXSP5B10
PROFACE ST403-AG41-24
Pro-face ZSDG914I
Promatrix System Dynacord DPA4140 400 Watt Amplificatore di Potenza
Promatrix System DYNACORD DPA4140 400 Watts Power Amplifier
Promax RG5410A Refrigerant Recovery Machine (0213)
Promax RG5410A Refrigerante Recupero Macchina (0213)
Promicon Sistema SBR-19 Cremagliera Con Carte Cnc-Automation 6032
Promicon System SBR-19 Rack With Cards CNC-Automation 6032
Promient GMXA1009NPT25000UA11000EN Solenoid Metering Pump GMXA
Promient GMXA1009NPT25000UA11000EN Solenoide Misurazione Pompa Gmxa
ProMinent Dialog DACA00614010000010EN Multi Parametri Controller 9835
ProMinent Dialog DACA00614010000010EN MultiParameter Controller 9835
Prominent GMXA SOlenoid GMXA1009NPT25000UA11000EN Metering Pump
Prominent GMXA1009NPT25000UA11000EN Solenoid Metering Pump Kit 0428
Prominent GMXA1009NPT25000UA11000EN Solenoide Misurazione Kit Pompa 0428
PROMISE GP-0634-03 Rev B3
Proportion-air r0006 pressure control valve with transducer qb1tfic100
Proportion-air r0006 pressure control valve with transducer qb1tfie100
PROSOFT PLX32-EIP-PND
Prosoft Technology PLX31 Family of Ethernet and Serial Gateway PLX31-EIP-ASCII
PROTEC PH01K-40 GRIPPER
Protecta AG152 - BIMATIC II Descender Device 0086-EN341
Protecta AG152 - BIMATIC II Discensore Dispositivo 0086-EN341
Protecta AG152 - BIMATIC®II Descender Device 0086-EN341
Protek DC Power Supply 0 – 18VDC 1Amp Model 1801
Protek G305
ProValve 100 - Open-loop Proportional Solenoid Valve Controller
ProValve 100 - Open-Loop Proportionale Solenoide Valvola Controller
PRPPERL+FUCHS VL18LL-M
PRT PRN150M-3 SWITCHING POWER SUPPLY
Pruftechnik AG VIB5.785 I PCB Module 5.7561 & 5.7551
Pruftechnik Vibronet MUX VIB 8.306 Multiplexer Interruttori Misurazione Sensore
Pruftechnik Vibronet MUX VIB 8.306 Multiplexer Switches Measurement Sensor
Pruftechnik Vibronet Vib MUX 8.306 Multiplexer Interruttori Misurazione 5135
Pruftechnik Vibronet VIB MUX 8.306 Multiplexer Switches Measurement 5135
PRX KD324510 IGBT MODULE KD-324510 FOR TDM 1.2-100-300-W1-000
PSK PRO Rev 1.02G 84M0A1340063
PSM INSTRUMENTATION LTD 260/F3/H8/P25/8M/9/NA TWO WIRE TRANSMITTER
PSM INSTRUMENTATION LTD RT 168 260/F18/H8/P20/8MWG/9/IS PRESSURE TRANSMITTER
PSM-1 PAL 2051-220/1 PRINTED CIRCUIT BOARD 42160701
P-Toron AD31744A 3136065 PCB Corcuit Board 4951
P-Toron AD31744A 3136065 PCB Corcuit Tavola 4951
Purpleas LF70R-01-05 Azimuth Shifter 10381
PWM EPIP20 EPRC-G
PWR NPEXA-C11 TRANSMITTER 0~10mV 4-20mA
PXAGP-13S-R21 V2.1
PXE-13S-R42
PZ2-16ND1-10TD1
PZT-32
Q Frame Memory CT 170A109439-F, 176A109554-C
QA TECHNOLOGY 100PLP1602LPROBE GOLD 1lot 100pcs
Q-Aviation B.V Q81RI03 Q-Obstruction Light
Q-aviation B.V Q81RI03 Q-Obstruction Luce
Q-Aviation BV Q81RI03 Q-Obstruction Light 4174
Q-Aviation Bv Q81RI03 Q-Obstruction Luce 4174
QE S2N Bsh /6161/001/2004 Gyro Sistema Convertitore
QE S2N BSH/6161/001/2004 Gyro System Converter
Q-Explosion a Prova Td / Pm Sistema Perimetro LED Lights
Q-EXPLOSION PROOF TD/PM Sistema Perimetrale LED Lights
Q-Explosion Proof TD/PM System Perimeter LED Lights
QM SOFT CO.,LTD VE0-08 VE0491 EBR060 INV-LB11
QMC 2282-ME2828
QMC 733-ME2844
Qmi Multiplex Oil Mist Detector NW6 2HL
Qmi Multiplex Olio Nebbia Rilevatore NW6 2HL
QMI Triplex NW62HL Oil Mist Monitor T404
Qmi Triplex NW62HL Olio Nebbia Monitor T404
QQQ D20126 PG759A Scheda CPU Video E TEC-2VC PLC
QQQ D20126 PG759A Video & CPU TEC-2VC PLC cpu Board
QSC TSC-116-G2 TOUCHSCREEN CONTROLLER 24VDC/1A
Qualitrol Idm+ Digital Fault Recorder
Quantum Th5XD-HG A04 DLT 4000 Series SCSI Tape Loader
Quel GmbH P350/V016 A Alimentazione Elettrica 32261
Quel GmbH P350/V016 A Power Supply 32261
QUICK SILVER I-GRADE QCI-A23H-3-A-01
QUICK SILVER NUGGET N3-F4-04-EE
QUICKSILVER QCI-A34H-1 I-GRADE MOTOR/ENCODER
QUICKSILVER QCI-A34H-1-B-01 I-GRADE MOTOR/ENCODER
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