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。
GAMMA CPU 2100 IC 970.407.411 HIGH IC 970.407.421 LOW VER3.41
GAMMA-METRICS 100019-123 LOG COUNTRATE BOARD 100021E
GAMMA-METRICS 100019-123 LOG COUNTRATE BOARD 100021E
GAMMA-METRICS 100019-123 LOG COUNTRATE BOARD 100021E
GAMMA-METRICS 100019-123 LOG COUNTRATE BOARD 100021E
GAMMA-METRICS 100022-001 PC BOARD PN100024C
GAMMA-METRICS 100022-001 PC BOARD PN100024C
GAMMA-METRICS 100022-001 PC BOARD PN100024C
GAMMA-METRICS 100022-001 PC BOARD PN100024C
GARDNER DENVER SMK3.0F PC BOARD SMK30F
GARDNER DENVER SMK3.0F PC BOARD SMK30F
GARVENS 646-1787-08 PROCESSOR BOARD 646178708 12000105
GARVENS 646-1787-08 PROCESSOR BOARD 646178708 12000105
GARVENS 646-1963-01 PROCESSOR BOARD 646196301
GARVENS 646-1963-01 PROCESSOR BOARD 646196301
GATES 770XH300 POWER DRIVE TIMING BELT
GATES 770XH300 POWER DRIVE TIMING BELT
GD CALIFORNIA PWB 110414-001 PC BOARD PWB110414001
GD CALIFORNIA PWB 110414-001 PC BOARD PWB110414001
GDEN MGE 34001180XD-1AA PCB BOARD 34001180XD-4AA
GDEN MGE 34001180XD-1AA PCB BOARD 34001180XD-4AA
GDEN MGE 34001180XD-1AA PCB BOARD 34001180XD-4AA
GDEN MGE 34001180XD-1AA PCB BOARD 34001180XD-4AA
GE 193X277ACG02 CIRCUIT BOARD
GE 193X277ACG02 CIRCUIT BOARD
GE 193X277ACG02 CIRCUIT BOARD
GE 193X277ACG02 CIRCUIT BOARD
GE 193X-277AC-G02 CIRCUIT BOARD 193X277ACG02
GE 193X-277AC-G02 CIRCUIT BOARD 193X277ACG02
GE 3044 G 207 06A ANALOG INTERFACE PCB BOARD HS10-SIR10T
GE 3044 G 207 06A ANALOG INTERFACE PCB BOARD HS10-SIR10T
GE 3044 G 207 06A ANALOG INTERFACE PCB BOARD HS10-SIR10T
GE 3044 G 207 06A ANALOG INTERFACE PCB BOARD HS10-SIR10T
GE 44A294598G01 PC BOARD IC483 FOR SERIES 1050
GE 44A294598G01 PC BOARD IC483 FOR SERIES 1050
GE 44A294598G01 PC BOARD IC483 FOR SERIES 1050
GE 44A294598G01 PC BOARD IC483 FOR SERIES 1050
GE 44A294598G01 PC BOARD IC483 FOR SERIES 1050
GE 44A294598G01 PC BOARD IC483 FOR SERIES 1050
GE 44A297005G01 SMI4A CIRCUIT BOARD
GE 44A297005G01 SMI4A CIRCUIT BOARD
GE 44A390417-G01 PC BOARD 44A390417G01
GE 44A390417-G01 PC BOARD 44A390417G01
GE 44A390417-G01 PC BOARD 44A390417G01
GE 44A390417-G01 PC BOARD 44A390417G01
GE 44A390420-G03 PC BOARD 44A390420G03
GE 44A390420-G03 PC BOARD 44A390420G03
GE 44B390462-002/1 PC BOARD 44B392110-001 44B3904620021
GE 44B390462-002/1 PC BOARD 44B392110-001 44B3904620021
GE 44B390462-002/1 PC BOARD 44B392110-001 44B3904620021
GE 44B390462-002/1 PC BOARD 44B392110-001 44B3904620021
GE 4P1-1404-X11 CIRCUIT BOARD BIT040-LG6-4664836.03 4P11404X11
GE 4P1-1404-X11 CIRCUIT BOARD BIT040-LG6-4664836.03 4P11404X11
GE 531X135PRGALM1 PC BOARD ASSEMBLY
GE 531X135PRGALM1 PC BOARD ASSEMBLY
GE 531X304IBDARG1 PC BOARD BASE
GE 531X304IBDARG1 PC BOARD BASE
GE 810-002000-051 Transportation PCB 81002000051
GE 810-002000-051 Transportation PCB 81002000051
GE B6574 SIGNAL PROCESS BOARD
GE B6574 SIGNAL PROCESS BOARD
GE DRUCK DPI 283 PROCESS INDICATOR 47-70HZ 4 VA 280 SERIES
GE DRUCK DPI 283 PROCESS INDICATOR 47-70HZ 4 VA 280 SERIES
GE DS3800DGRD1C1ABA01 BOARD DS3800DGRD1C1A, DS3800DGRD
GE DS3800DGRD1C1ABA01 BOARD DS3800DGRD1C1A, DS3800DGRD
GE ENERGY 13-0208-10 TRANSPORT X DAUGHTER PCB IN BOXS
GE ENERGY 13-0208-10 TRANSPORT X DAUGHTER PCB IN BOXS
GE Energy Power GS00001044 PCB, Feedback, Voltage, Cegelec PC0333
GE Energy Power GS00001044 PCB, Feedback, Voltage, Cegelec PC0333
GE EP63ULC40 IEC SUPPLEMENTARY PROTECTOR MCB 686709 EP63UL 6000A, 277/480 VAC
GE EP63ULC40 IEC SUPPLEMENTARY PROTECTOR MCB 686709 EP63UL 6000A, 277/480 VAC
GE EP63ULC63 IEC SUPPLEMENTARY PROTECTOR MCB 686712 EP63UL 6000A, 277/480 VAC
GE EP63ULC63 IEC SUPPLEMENTARY PROTECTOR MCB 686712 EP63UL 6000A, 277/480 VAC
GE EP63ULC63 IEC SUPPLEMENTARY PROTECTOR MCB 686712 EP63UL 6000A, 277/480 VAC
GE EP63ULC63 IEC SUPPLEMENTARY PROTECTOR MCB 686712 EP63UL 6000A, 277/480 VAC
GE FANUC 134196A PC BOARD 134196
GE FANUC 134196A PC BOARD 134196
GE FANUC 44A391771-G01 PC BOARD 44A391771G01
GE FANUC 44A391771-G01 PC BOARD 44A391771G01
GE FANUC 44A391771-G01 PC BOARD 44A391771G01
GE FANUC 44A391771-G01 PC BOARD 44A391771G01
GE FANUC 44A391772-G01 CIRCUIT BOARD CAU2 44A391772G01 44B391879-002/2
GE FANUC 44A391772-G01 CIRCUIT BOARD CAU2 44A391772G01 44B391879-002/2
GE FANUC 44A391772-G01 CIRCUIT BOARD CAU2 44A391772G01 44B391879-002/2
GE FANUC 44A391772-G01 CIRCUIT BOARD CAU2 44A391772G01 44B391879-002/2
GE FANUC 44A391778-G01 PC BOARD 44A391778G01
GE FANUC 44A391778-G01 PC BOARD 44A391778G01
GE FANUC 44A391778-G01 PC BOARD 44A391778G01
GE FANUC 44A391778-G01 PC BOARD 44A391778G01
GE FANUC 44A728128-G01 BREAK-OUT BOARD 44A728128G01
GE FANUC 44A728128-G01 BREAK-OUT BOARD 44A728128G01
GE FANUC 44A728128-G01 BREAK-OUT BOARD 44A728128G01
GE FANUC 44A728128-G01 BREAK-OUT BOARD 44A728128G01
GE FANUC 44B392100-001 PC BOARD 44B392100001
GE FANUC 44B392100-001 PC BOARD 44B392100001
GE FANUC 44B393714-002 PC BOARD 44B393714002
GE FANUC 44B393714-002 PC BOARD 44B393714002
GE FANUC 44B393714-002 PC BOARD 44B393714002
GE FANUC 44B393714-002 PC BOARD 44B393714002
GE FANUC 44B399210-001 PC BOARD 44B399210001
GE FANUC 44B399210-001 PC BOARD 44B399210001
GE FANUC 44C502586-G02 /002 CIRCUIT BOARD 44C502586G02002
GE FANUC 44C502586-G02 /002 CIRCUIT BOARD 44C502586G02002
GE FANUC 531X170TBSAGG1 TB OPTION CARD VA-5
GE FANUC 531X170TBSAGG1 TB OPTION CARD VA-5
GE FANUC 531X171TMAAEG2 MICRO APPL TB CARD VA-5
GE FANUC 531X171TMAAEG2 MICRO APPL TB CARD VA-5
GE FANUC 531X300CCHABM5 CONTROL CARD W/ 531X133PRUAKG1 INTERFACE
GE FANUC 531X300CCHABM5 CONTROL CARD W/ 531X133PRUAKG1 INTERFACE
GE FANUC 531X300CCHAHM2 CONTROL CARD
GE FANUC 531X300CCHAHM2 CONTROL CARD
GE FANUC 531X300CCHAM CONTROL BOARD
GE FANUC 531X300CCHAM CONTROL BOARD
GE FANUC 53IXI7ITMAAEG2 MICRO APPL TB CARD
GE FANUC 53IXI7ITMAAEG2 MICRO APPL TB CARD
GE FANUC A20B-8100-0770 FAST DATA SERVER BOARD A20B81000770
GE FANUC A20B-8100-0770 FAST DATA SERVER BOARD A20B81000770
GE FANUC DS3800NMEC PC BOARD
GE FANUC DS3800NMEC PC BOARD
GE FANUC DS3800NMEC PC BOARD
GE FANUC DS3800NMEC PC BOARD
GE FANUC DS3800NMEC PC BOARD
GE FANUC DS3800NMEC PC BOARD
GE FANUC F31X171TMAAEG2 MICRO APPL TB CARD VA-5 531X171TMAAS2
GE FANUC F31X171TMAAEG2 MICRO APPL TB CARD VA-5 531X171TMAAS2
GE FANUC F31X171TMAAEG2 VA-5 MICRO APPL TB CARD PCB BOARD
GE FANUC F31X171TMAAEG2 VA-5 MICRO APPL TB CARD PCB BOARD
GE FANUC F31X171TMAAEG2 VA-5 MICRO APPL TB CARD PCB BOARD
GE FANUC F31X171TMAAEG2 VA-5 MICRO APPL TB CARD PCB BOARD
GE FANUC F31X171TMAAEG2 VA-5 MICRO APPL TB CARD PCB BOARD
GE FANUC F31X171TMAAEG2 VA-5 MICRO APPL TB CARD PCB BOARD
GE FANUC F3IXIIIPSHALGIFR00/0 POWER SUPPLY CARD F3IXIIIPSHALGIFR000 VA-5
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