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
GE General Electric K81SDX K81SDX225 Striker H Motor Circuit Fuse
GE General Electric MIC5052N011G00 MIC5052N011G0048 Time Overcurrent Relay
GE General Electric MIC5052N011G00 MIC5052N011G0048 Time Overcurrent Relay
GE General Electric PK-2 PK2 Test Block NNB
GE General Electric PK-2 PK2 Test Block NNB
GE General Electric PK-2 PK2 Test Block NNB 30Days Warranty
GE General Electric PK-2 PK2 Test Block NNB 30Days Warranty
GE General Electric Power Break Accessories 30Days Warranty
GE General Electric Power Break Accessories 30Days Warranty
GE General Electric TPAS2AB 2 TPAS2AB2 Power Break Accessories Auxiliary Switch
GE General Electric TPAS2AB 2 TPAS2AB2 Power Break Accessories Auxiliary Switch
GE Medical System Mainstream CO2 Module
GE Medical System Mainstream CO2 Module
GE ML 500 Digital Energy ML Series AS IS
GE ML 500 Digital Energy ML Series AS IS
GE ML 500 Digital Energy ML Series UPS Battery
GE ML 500 Digital Energy ML Series UPS Battery
GE RR 7 Remote Control Switching Relay 21-30 VAC
GE RR 7 Remote Control Switching Relay 21-30 VAC
GE TLE220Y050WM Type 2 SPD Surge Protective Device w/ Rust
GE TLE220Y050WM Type 2 SPD Surge Protective Device w/ Rust
GE VCO Series VCO1000 Uninterruptible Power Supply
GE VCO Series VCO1000 Uninterruptible Power Supply
GEA SHJ92S9/30-G16 244-143.85 694804 056106000
GEA SHJ92S9/30-G16 244-143.85 694804 056106000
GEA Tuchenhagen 8110-3042-0100-0000/3412-1111-1000-0000
GEA Tuchenhagen 8110-3042-0100-0000/3412-1111-1000-0000
GEA Tuchenhagen 8880-0102-0100-0000/3412-1111-1000-0000 Butterfly Valve
GEA Tuchenhagen 8880-0102-0100-0000/3412-1111-1000-0000 Butterfly Valve
Gearbox construction Nord SK12F IEC90 transmission i = 4.93
Geberit 31011 Mapress Stainless Steel TPiece 1.4401/316
Gec Alsthom 379088G w/ MVAJ21D1GB0774B
Gec Alsthom 379088G w/ MVAJ21D1GB0774B
GEC Alsthom LD640EJ R3000 Brushless Servo Motor
GEC Alsthom LD640EJ R3000 Brushless Servo Motor
GEC ALSTHOM LX310BM Servo Motor
GEC ALSTHOM LX310BM Servo Motor
GEC ALSTHOM LX310BMR3000 Servo Motor
GEC ALSTHOM LX310BMR3000 Servo Motor
Gec Alsthom MVAA11B1BA0783C w/ Stafford ST17 LX
Gec Alsthom MVAA11B1BA0783C w/ Stafford ST17 LX
GEC Alsthom MVTR51D1CC6011C MVTR Relay Module
GEC Alsthom MVTR51D1CC6011C MVTR Relay Module
Gec Alsthom PC 0193 10Z-1520-C30 CT Ratio 100A/25mA
Gec Alsthom PC 0193 10Z-1520-C30 CT Ratio 100A/25mA
GEC ALSTHOM RS210L Motor Cut Cable
GEC ALSTHOM RS210L Motor Cut Cable
GEC ALSTHOM RS210L R5000 Servo Motor w/ 88851 01600
GEC ALSTHOM RS210L R5000 Servo Motor w/ 88851 01600
GEC ALSTHOM RS210L R5000 Servo Motor w/ NR8885101600
GEC ALSTHOM RS210L R5000 Servo Motor w/ NR8885101600
Gec Alstom LX310BMR3000 Brushless Servo Motor
Gec Alstom LX310BMR3000 Brushless Servo Motor
Gecma Challenger TB Lite
Gefran 1000-R0-1R-0-1 1000R01R01 Temperature Controller 100..240Vac 50/60Hz 9VA
Gefran 1000-R0-1R-0-1 1000R01R01 Temperature Controller 100..240Vac 50/60Hz 9VA
Gefran F032240 B24 600-R-D-0-0-1 Controller
Gefran F032240 B24 600-R-D-0-0-1 Controller
Gefran RD-97 RD97 Temperature Controller
Gefran RD-97 RD97 Temperature Controller
GEI Card PC915 Rev III Inverter + S.SW 6KVA w/o heat sink
GEI Card PC915 Rev III Inverter + S.SW 6KVA w/o heat sink
Gemoteg 2P2-H1F Gemoverter
Gemoteg 2P2-H1F Gemoverter
Gemoteg GmbH frequency converter Geoverter 2P2H1F
GEMU 600 25D7820 41 Valves
GEMU 600 25D7820 41 Valves
Gemu 690-15D0-1141 ID-CH-88002370-060044 DIAPHRAGM VALVE
Gemu 690-15D0-1141 ID-CH-88002370-060044 DIAPHRAGM VALVE
Gemu E-Modul 3120 G2R9B20A3D620006 Pressure-Transmitter
Gemu E-Modul 3120 G2R9B20A3D620006 Pressure-Transmitter
General Datacomm 036P436-002 036P436002 Boards
General Datacomm 036P436-002 036P436002 Boards
General Electric 1531-181A-G288X 1531181AG288X Motor
General Electric 1531-181A-G288X 1531181AG288X Motor
General Electric 18R Motor Starter Fuse
General Electric 18R Motor Starter Fuse
General Electric CL02A400TN Magnetic Protector
General Electric CL02AB00TNMagnet Circuit Breaker
General Electric CL03A310MN Magnetic Circuit Breaker
General Electric GE CR305**D003 305D003 Contactor
General Electric GE CR305**D003 305D003 Contactor
General Electric GE CR306 CR306D1 Magnetic Starter
General Electric GE CR306 CR306D1 Magnetic Starter
General Electric GE CR306 CR306D1** Magnetic Starter 300-Line Control
General Electric GE CR306 CR306D1** Magnetic Starter 300-Line Control
General Electric GE CR306C1 CR306C103 Magnetic Starter
General Electric GE CR306C1 CR306C103 Magnetic Starter
Generic Power Pte Lighting Controller Rev. 4.1 Circuit Board
Generic Power Pte Lighting Controller Rev. 4.1 Circuit Board
GenRad 2276-4033 22764033 Training Box
GenRad 2276-4033 22764033 Training Box
Genrad 2750-4756-00 2750-0756-00/03 LYR 6 Board
Genrad 2750-4756-00 2750-0756-00/03 LYR 6 Board
Genuine GM 22853025 Headlight Assy 30Days Warranty
Genuine GM 22853025 Headlight Assy 30Days Warranty
Genuine Parts LKB/LKB-F LKBF LKBLKBF BUTTERFLY VALVE LKB ISO CL/CL CLCL
Genuine Parts LKB/LKB-F LKBF LKBLKBF BUTTERFLY VALVE LKB ISO CL/CL CLCL
Georg Fischer 199.041.038 199041038
Georg Fischer 199.041.038 199041038
Georgil Kobold KSY 364.30 K-MS-RH-1/S2/S23/S-1 Brushless Servomotor
Georgil Kobold KSY 364.30 K-MS-RH-1/S2/S23/S-1 Brushless Servomotor
Georgin P6P 5/N 5N Regulator
Georgin P6P 5/N 5N Regulator
Gercom Automation NETZTEIL G/3 EL 230V 50Hz
Gercom Automation NETZTEIL G/3 EL 230V 50Hz
Gewiss C16 Magnetothermal Differential Bipolar with 1 Pole Protected
GHC S250T Shaft Motor AC240V w/ Cut Cable
GHC S250T Shaft Motor AC240V w/ Cut Cable
GHV LU702KASi000154 Patlite Base Connection Module A/B Slave
Giddings & Lewis PiC900 502-03846-03R1 PLC CPU Module
Giddings & Lewis PiC900 502-03846-03R1 PLC CPU Module
GIE 6790 Noise Head
GIE 6790 Noise Head
GIE BS-PB462101 BSPB462101 Board
GIE BS-PB462101 BSPB462101 Board
GIE BS-PB463003 BSPB463003
GIE BS-PB463003 BSPB463003
GIE L1-PB100320 Board
GIE L1-PB100320 Board
GIE LS-PB462-062 LSPB462062 Board
GIE LS-PB462-062 LSPB462062 Board
GIE LS-PB462085 Board
GIE LS-PB462085 Board
GIE LS-PB463001 LSPB463001
GIE LS-PB463001 LSPB463001
GIE PB000501A Board
GIE PB000501A Board
GIE PB603010 BS Board
GIE PB603010 BS Board
Gigabyte GA-H61M-S2P-R3 GAH61MS2PR3 Motherboard w/ 2 Pcs. 2GB PC3-12800 RAM
Gigabyte GA-H61M-S2P-R3 GAH61MS2PR3 Motherboard w/ 2 Pcs. 2GB PC3-12800 RAM