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。
SIEMENS 533-680 OUTPUT CURRENT BOARD 533680
SIEMENS 533-680 OUTPUT CURRENT BOARD 533680
SIEMENS 533-680 OUTPUT CURRENT BOARD 533680
SIEMENS 6DR2800-8A ANALOG INPUT MODULE C73451-A3001-P8-03-85
SIEMENS 6DR2800-8A ANALOG INPUT MODULE C73451-A3001-P8-03-85
SIEMENS 6DR2800-8R PCB CARD
SIEMENS 6DR2800-8R PCB CARD
SIEMENS 6DR2800-8V UNIVERSAL ANALOG INPUT MODULE C73451-A3004-P4-02-85
SIEMENS 6DR2800-8V UNIVERSAL ANALOG INPUT MODULE C73451-A3004-P4-02-85
SIEMENS 6DS1916-8AA COMPUTER SIGNAL CARD 6DS19168AA C79040-A6420-C277-03-86
SIEMENS 6DS1916-8AA COMPUTER SIGNAL CARD 6DS19168AA C79040-A6420-C277-03-86
SIEMENS 6EC1654-0B TELEPERM PC BOARD 6EC16540B
SIEMENS 6EC1654-0B TELEPERM PC BOARD 6EC16540B
SIEMENS 6ES5 375-0LC41 SIMATIC S5 MEMORY SUBMODULE 16K x 8 BIT
SIEMENS 6ES5 375-0LC41 SIMATIC S5 MEMORY SUBMODULE 16K x 8 BIT
SIEMENS 6ES5373-1AA81 EPROM MEMORY SUBMODULE SIMATIC S5
SIEMENS 6ES5373-1AA81 EPROM MEMORY SUBMODULE SIMATIC S5
SIEMENS 6ES5420-3BA11 BOARD
SIEMENS 6ES5420-3BA11 BOARD
SIEMENS 6ES5451-4UA13 PC BOARD 6ES54514UA13
SIEMENS 6ES5451-4UA13 PC BOARD 6ES54514UA13
SIEMENS 6ES5451-4UA13 PC BOARD 6ES54514UA13
SIEMENS 6ES7 214-1AG31-0XB0 COMPACT CPU 1214C SIMATIC S7-1200
SIEMENS 6ES7 214-1AG31-0XB0 COMPACT CPU 1214C SIMATIC S7-1200
SIEMENS 6ES7 214-1AG31-0XB0 COMPACT CPU 1214C SIMATIC S7-1200
SIEMENS 6ES7 307-1EA01-0AA0 POWER SUPPLY 6ES73071EA010AA0
SIEMENS 6ES7 307-1EA01-0AA0 POWER SUPPLY 6ES73071EA010AA0
SIEMENS 6ES7 307-1EA01-0AA0 POWER SUPPLY 6ES73071EA010AA0
SIEMENS 6ES7132-4BD00-0AA0 S7 PLC WITH I/O CARDS TME-15S24-01
SIEMENS 6ES7132-4BD00-0AA0 S7 PLC WITH I/O CARDS TME-15S24-01
SIEMENS 6ES7195-7HD80-0XA0 BUS MODULE 6ES71957HD800XA0
SIEMENS 6ES7195-7HD80-0XA0 BUS MODULE 6ES71957HD800XA0
SIEMENS 6ES7953-8LF30-0AA0 MEMORY CARD S7-300 6ES79538LF300AA0
SIEMENS 6ES7953-8LF30-0AA0 MEMORY CARD S7-300 6ES79538LF300AA0
SIEMENS 6FC5247-0AA0-0AA3 SINUMERIK 840D DRIVE 6FC52470AA00AA3
SIEMENS 6FC5247-0AA0-0AA3 SINUMERIK 840D DRIVE 6FC52470AA00AA3
SIEMENS 6FC9302-2AB PLUG BOARD 6FC93022AB
SIEMENS 6FC9302-2AB PLUG BOARD 6FC93022AB
SIEMENS 6FH 9405-0AX88-0AS1 A5E01036364 PCB CARD
SIEMENS 6FH 9405-0AX88-0AS1 A5E01036364 PCB CARD
SIEMENS 6FH 9405-0AX88-0AS1 A5E01036364 PCB CARD
SIEMENS 6FX1-120-7BA01 ADAPTER FOR MONITOR 6FX11207BA01 WITH MEMORY BOARDS
SIEMENS 6FX1-120-7BA01 ADAPTER FOR MONITOR 6FX11207BA01 WITH MEMORY BOARDS
SIEMENS 6FX1121-2BB02 SINUMERIK 810 INTERFACE BOARD 6FX1134-2BC01
SIEMENS 6FX1121-2BB02 SINUMERIK 810 INTERFACE BOARD 6FX1134-2BC01
SIEMENS 6FX1121-2BB02 SINUMERIK 810 INTERFACE BOARD 6FX1134-2BC01
SIEMENS 6FX1121-2BB02 SINUMERIK 810 INTERFACE BOARD 6FX1134-2BC01
SIEMENS 6FX1121-2BB02 SINUMERIK 810 INTERFACE BOARD 6FX1134-2BC01
SIEMENS 6FX1121-2BB02 SINUMERIK 810 INTERFACE BOARD 6FX1134-2BC01
SIEMENS 6FX1121-2BB02 SINUMERIK 810 INTERFACE BOARD 6FX1134-2BC01
SIEMENS 6FX1121-2BB02 SINUMERIK 810 INTERFACE BOARD 6FX1134-2BC01
SIEMENS 6FX1121-2BB02 SINUMERIK 810 INTERFACE BOARD 6FX1134-2BC01
SIEMENS 6FX1121-4BA01 SINUMERIK 800 SERVO INTERFACE CARD 6FX11214BA01
SIEMENS 6FX1121-4BA01 SINUMERIK 800 SERVO INTERFACE CARD 6FX11214BA01
SIEMENS 6FX1122-2AD02 COUPLING NC/PLC BOARD 6FX11222AD02
SIEMENS 6FX1122-2AD02 COUPLING NC/PLC BOARD 6FX11222AD02
SIEMENS 6GK1541-1AA00 SIMATIC NET PCB CARD C79458-L7000-B71
SIEMENS 6GK1541-1AA00 SIMATIC NET PCB CARD C79458-L7000-B71
SIEMENS 6GK1551-2AA00 PCMCIA CARD 6GK15512AA00
SIEMENS 6GK1551-2AA00 PCMCIA CARD 6GK15512AA00
SIEMENS 6QN4000-0AD PC BOARD 6QN40000AD
SIEMENS 6QN4000-0AD PC BOARD 6QN40000AD
SIEMENS 6SC6100-0GE01 CONTROL BOARD 6SC61000GE01
SIEMENS 6SC6100-0GE01 CONTROL BOARD 6SC61000GE01
SIEMENS 6SC6100-0GE01 CONTROL BOARD 6SC61000GE01
SIEMENS 6SC6100-0GE01 CONTROL BOARD 6SC61000GE01
SIEMENS 6SC6100-0GE01 CONTROL BOARD 6SC61000GE01
SIEMENS 6SC6100-0GE01 CONTROL BOARD 6SC61000GE01
SIEMENS 6SC6100-0NA11 ANALOG CONTROL BOARD 6SC61000NA11
SIEMENS 6SC6100-0NA11 ANALOG CONTROL BOARD 6SC61000NA11
SIEMENS 6SC6500-0BA01 PC BOARD 6SC65000BA01
SIEMENS 6SC6500-0BA01 PC BOARD 6SC65000BA01
SIEMENS 6SC6500-0UC01 PC BOARD 6SC65000UC01
SIEMENS 6SC6500-0UC01 PC BOARD 6SC65000UC01
SIEMENS 6SC6500-0UC01 PC BOARD 6SC65000UC01
SIEMENS 6SC6500-0UC01 PC BOARD 6SC65000UC01
SIEMENS 6SC6608-4AA00 CONTROL BOARD AU-CI-AM , GE.462000.0715.01 REPAIRED
SIEMENS 6SC6608-4AA00 CONTROL BOARD AU-CI-AM , GE.462000.0715.01 REPAIRED
SIEMENS 6SC9111-2AC2 FIRING BOARD 6SC91112AC2
SIEMENS 6SC9111-2AC2 FIRING BOARD 6SC91112AC2
SIEMENS 6SC9111-2AC2 FIRING BOARD 6SC91112AC2
SIEMENS 6SC9111-2AC2 FIRING BOARD 6SC91112AC2
SIEMENS 6SC9111-2AC2 FIRING BOARD 6SC91112AC2
SIEMENS 6SC9111-2AC2 FIRING BOARD 6SC91112AC2
SIEMENS 6SE7031-7HF84-1HH0-ZL20 PCB / FAST BY DHL OR FEDEX
SIEMENS 6SE7031-7HF84-1HH0-ZL20 PCB / FAST BY DHL OR FEDEX
SIEMENS 6SE7090-0XX84-0KA0 ADAPTOR BOARD 6SE70900XX840KA0
SIEMENS 6SE7090-0XX84-0KA0 ADAPTOR BOARD 6SE70900XX840KA0
SIEMENS 6SE7090-0XX84-3DB1 INTERFACE BOARD 6SE70900XX843DB1
SIEMENS 6SE7090-0XX84-3DB1 INTERFACE BOARD 6SE70900XX843DB1
SIEMENS 6SE7090-0XX84-3DB1 INTERFACE BOARD 6SE70900XX843DB1
SIEMENS 6SE7090-0XX84-3DB1 INTERFACE BOARD 6SE70900XX843DB1
SIEMENS 6SE7090-0XX84-3DB1 INTERFACE BOARD 6SE70900XX843DB1
SIEMENS 6SE7090-0XX84-3DB1 INTERFACE BOARD 6SE70900XX843DB1
SIEMENS 6SE7094-0XX84-1GA1 Testbox Simovert Masterdrive
SIEMENS 6SE7094-0XX84-1GA1 Testbox Simovert Masterdrive
SIEMENS 6SL3210-1KE11-8UF1 DRIVE 6SL32101KE118UF1
SIEMENS 6SL3210-1KE11-8UF1 DRIVE 6SL32101KE118UF1
SIEMENS 9EF7-399-PDB-B1-1AA1 PCB MODULE 24D12PDBF-TG
SIEMENS 9EF7-399-PDB-B1-1AA1 PCB MODULE 24D12PDBF-TG
SIEMENS 9EF7-399-PDB-B1-1AA1 PCB MODULE 24D12PDBF-TG
SIEMENS 9EF7-399-PDB-B1-1AA1 PCB MODULE 24D12PDBF-TG
SIEMENS A1-106-100-508 SNUBBER BOARD A1-301-216-01-021 A1106100508
SIEMENS A1-106-100-508 SNUBBER BOARD A1-301-216-01-021 A1106100508
SIEMENS A1-106-100-508 SNUBBER BOARD A1-301-216-01-021 A1106100508
SIEMENS A1-106-100-508 SNUBBER BOARD A1-301-216-01-021 A1106100508
SIEMENS A5E00010538 ARTICULATED JOINTS F.KEYBOARD 50 PIECES
SIEMENS A5E00010538 ARTICULATED JOINTS F.KEYBOARD 50 PIECES
SIEMENS A5E02183091-3 A5E02171883 CP PCB CARD
SIEMENS A5E02183091-3 A5E02171883 CP PCB CARD
SIEMENS AS 4.0946.3330.1F PCB 943.3330.1F
SIEMENS AS 4.0946.3330.1F PCB 943.3330.1F
SIEMENS BOARD 6EC1221-0A
SIEMENS BOARD 6EC1221-0A
SIEMENS C73451-A3001-P3-03-85 K6 PCB
SIEMENS C73451-A3001-P3-03-85 K6 PCB
SIEMENS C73451-A3001-P3-03-85 K6 PCB
SIEMENS C73451-A3001-P3-03-85 K6 PCB
SIEMENS C73451-A430-P300-04-85 PCB CIRCUIT
SIEMENS C73451-A430-P300-04-85 PCB CIRCUIT
SIEMENS C98043-A1047-L111 CONTROL BOARD C98043A1047L111
SIEMENS C98043-A1047-L111 CONTROL BOARD C98043A1047L111
SIEMENS C98043-A1047-L111 CONTROL BOARD C98043A1047L111
SIEMENS C98043-A1047-L111 CONTROL BOARD C98043A1047L111
SIEMENS C98043-A1766-L1 C98040-A1766-C1-10 C98043-A1767-L1 PCB CARD
SIEMENS C98043-A1766-L1 C98040-A1766-C1-10 C98043-A1767-L1 PCB CARD
SIEMENS C98043-A7118-L1-4 YSU/C83053AJ9AGM C98043A7118L14 PCB
SIEMENS C98043-A7118-L1-4 YSU/C83053AJ9AGM C98043A7118L14 PCB
SIEMENS C98043-A7118-L1-4 YSU/C83053AJ9AGM C98043A7118L14 PCB
SIEMENS C98043-A7118-L1-4 YSU/C83053AJ9AGM C98043A7118L14 PCB
SIEMENS EWK-X30 PC BOARD A5E00066359-04 EWKX30
SIEMENS EWK-X30 PC BOARD A5E00066359-04 EWKX30
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