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
COGNEX 801-8501-11R B CFG-8501-000 REV F ,OPT:H9-J3 BOARD
COGNEX 8110-CVM6-32 BOARD 801-8421-02 G,VM22A 203-0079-RA FRAME GRABBER
Cognex 8200 Vison Board 8203/CPCI/IO VPM-8203K2/C-5020
COGNEX 821-0025-3R, 821-0025-3RF, BARCODE SCANNER, #1212P7
COGNEX 825-0201-1RN
COGNEX 828-0076-1R IS5401-00
Cognex Barcode Reader DMR-262QL-0112, 828-10353-1RA, 828-10353-1R, DMR262QL0112
COGNEX BOARD CFG-8501-000 REV:E,OPT:H8,VM41B 203-0236-RD
COGNEX BOARD CFG-8501-000 REV:F,OPT:none,VM41B 203-0236-RD
COGNEX BOARD VPM-8100DVX-020 Rev A OPT:A-D5
COGNEX BOARD VPM-8100LVX-000 REV:G OPT:none
COGNEX CAMERA MOUNI 540-115011,REV 03,AVIIVA ATMEL CAMERA LINK 540-115007.01
COGNEX CCB-84901-1006-30, CCB84901100630, 185-0256R,
COGNEX CCB-84901-1006-30, CCB84901100630, 185-0256R,
COGNEX CCB-84901-2001-30, CCB84901200130, 185-1308R, ETHERNET CABLE 8 PIN M12
COGNEX COG-IPC5-WB-000B REV. 01 20VDC 8A
Cognex DM100QL Barcode Reader Scanner 825-0132-2R
Cognex DM100S Barcode Reader Scanner 825-0021-2R
Cognex DS1101R, Displacement Sensor, LASER SCANNER
Cognex ethernet cable 30M with M12 - Rj45 CCB-84901-1006-30
cognex ethernet camera cable CGE-CBL-FLEX-H-20M
COGNEX Frame Grabber Card VPM-8501X-000 RevA
Cognex Frame Grabber Vision Board CFG -8501-000 Rev.F
Cognex Frame Grabber Vision Board CFG-8602E-001
Cognex Industrial Camera CAM-CIC-2000-80-G / ID:106557-05
COGNEX IN-SIGHT 2000 800-5714-1 G,IN-SIGHT DIGITAL CCD 800-5715-1 G,800-5721-1 G
COGNEX IN-SIGHT 2000 VISION SYSTEM, Rev G, 800-5714-1, 300-0281-15, 800-5746-1
COGNEX IN-SIGHT 2000 VISION SYSTEM, Rev H, 800-5714-1, 80057141,
COGNEX IN-SIGHT 4001,P/N 800-5770-1 REV L,LENS X2 TV EXTENDER 35MM 1:1.9
COGNEX IN-SIGHT 5100, ISS-5100-0000 & HF12.5HA-1B, SETS
COGNEX IS5400-R10 24VDC
COGNEX IS7500M-360-825-10648-1R 05 24VDC 1.5A (NO COVER)
COGNEX IS7500M-360-828-10691-1R A1 24VDC 1.5A
COGNEX ISM1100-10 828-0006-1R
COGNEX ISM1110-01
COGNEX KVD-8504-CON-J-P REV:A,OPT:none,200-0236-3 B FRAME GRABBER BOARD
Cognex MVS 8100 Frame Grabber ASP-8100-FFX REV. A
Cognex MVS 8100 Frame Grabber VPM-8100Q-000 REV. A
Cognex MVS 8100 Frame Grabber VPM-8100S-000 REV. A
COGNEX RING LIGHT 119-2043R, BEK-R70/30-G1TI-IBS-CLR/COG, SEAL BOX,
Cognex Smart Camera IS5413-00 800-5830-4R D
Cognex VC5 Vision Processor
COGNEX VIDEO MIXER II REV-C BOARD 800-5693-1,207-00107
Cognex Vision Board VPM-8100LQ-000 Rev.A
COGNEX VISION FRAME GRABBER 801-8120-01 B BOARD,200-0097-2 C,
Cognex Vision IN-SIGHT2000 Set 800-5715-1 /800-5714-1 / 800-5746-1 / Cable
COGNEX VITION BOARD VPM-8120X-5090 REV:A,OPT:1-B-D8, AS467-1-01
COGNEX VITION BOARD,VM10B 203-0057-RC,VPM-3418-1,801-3403-01 G,200-0057-1 ZH
COGNEX VITION BOARD,VM10B 203-0057-RC,VPM-3418-1,801-3403-01 G,200-0057-1 ZH
COGNEX VM41B CFG-8501-000 REV:F BOARD 200-0236-6R B,801-8501-11R B
COGNEX VME Board VPM-8100CX/C-000 Rev.A
COGNEX VME Board VPM-8102S/C-000 Rev.A
COGNEX VPM-8100LX-000 REV:A OPT:A
COGNEX VPM-8100X-000 REV:A OPT:A 801-8120-01 E,BOARD
COGNEX VPM-8100X-000 REV:A OPT:H 801-8120-01 D,BOARD
COGNEX VPM-8504Q-000 REV:F OPT:none VISION BOARD
COGNEX VPM-8504X-001-P REV:A OPT:A BOARD
COGNEX VSS-8100LX-001 REV:A OPT:A BOARD VM33A 203-0130-RD
COGNEX VVVGA Vision View VVVGA-00, 825-0139-1R, 825-0139-1RF, Rev D,
COHERENT 0163-745-00,0163-746-00 A3RC53-3 250W [4EA BROKEN ] FOR CO2 LASER
COHERENT 0163-745-00,0163-746-00 A3RC53-3 250W [4EA] FOR CO2 LASER
COHERENT 0163-745-00,0163-746-00 RFT 2525 SI J250100 [4EA] BOARD FOR CO2 LASER
COHERENT 0163-745-00,0163-746-00,RFT 3141 SI J250100 [4EA] BOARD FOR CO2 LASER
COHERENT 0165-005-00 REV:JA ANALOG HEAD BOARD
COHERENT 0166-431-00 REV:BA SABRE HEAD HV INTERCONNECT BOARD
COHERENT 0166-452-00 REV:CA SABRE HEAD REAR INTERCONNECT BOARD
COHERENT 0167-686-00 REV:BB SABRE MODE DETECTOR BOARD
COHERENT 0168-648-00 REV:A LINE FILTER BOARD,DIAMOND 64/84 FOR CO2 LASER
COHERENT 0169-212-00 FAB 0169-211-00,RFP 250-RM COMBINERWAY FOR CO2 LASER
COHERENT 0169-214-00 REV:A,4-8 WAY RF EXCITER PWB 0169-219-00 B
COHERENT 0169-214-000 REV:A,4-8 WAY RF EXCITER PWB 0169-219-00 B
COHERENT 0169-291-00 WATER WHEEL BOARD FOR CO2 LASER
COHERENT 0169-619-00 REV:CA SABRE DIGITAL HEAD BOARD
COHERENT 0171-172-00 REV:C,10 MHZ VSWR PROTECTION BOARD FOR CO2 LASER
COHERENT 0171-172-00 REV:D,10 MHZ VSWR PROTECTION BOARD FOR CO2 LASER
COHERENT 0171-172-00 REV:DC,10 MHZ VSWR PROTECTION BOARD FOR CO2 LASER
COHERENT 0172-585-00 REV:A DC POWER SUPPLY,8 WAY BOARD FOR CO2 LASER
COHERENT 0172-585-00 REV:B DC POWER SUPPLY,8 WAY BOARD FOR CO2 LASER
COHERENT 0172-585-00 REV:BA DC POWER SUPPLY,8 WAY BOARD FOR CO2 LASER
COHERENT 0176-011-01 D AVIA CPU BOARD
COHERENT 0178-129-00 REV:A,4-8 WAY RF EXCITER PWB 0169-219-00 C
COHERENT 0178-605-00 REV:A,DIAMOND DIGITAL INTERFACE BOARD FOR CO2 LASER
COHERENT 0178-605-00 REV:BA,DIAMOND DIGITAL INTERFACE BOARD FOR CO2 LASER
COHERENT 0178-605-00 REV:BB,DIAMOND DIGITAL INTERFACE BOARD FOR CO2 LASER
COHERENT 0178-605-00 REV:BD,DIAMOND DIGITAL INTERFACE BOARD FOR CO2 LASER
COHERENT 0178-605-00 REV:BD,DIAMOND DIGITAL INTERFACE BOARD FOR CO2 LASER
COHERENT 1013325 REV:AB MOPS POWER SUPPLY BOARD
COHERENT 1014798 REV:AB MOPS CPU BOARD
COHERENT 1046182 REV:AE,0178-129-00 AA,4-8 WAY RF EXCITER PWB 0169-219-00 DB
COHERENT 1083667 REV:AA SABRE HEAD HV INTERCONNECT BOARD
COHERENT 1083669 REV:AC SABRE HEAD REAR INTERCONNECT BOARD
COHERENT 1083671 REV:AA SABRE HEAD PHOTOCELL INTERCONNECT BOARD
COHERENT 1083673 REV:AC SABRE MODE DETECTOR BOARD
COHERENT 1083702 REV:AC SABRE DIGITAL HEAD BOARD
COHERENT 1083710 REV:AC BOARD
COHERENT 1114619 FIBER COUPLED DIODE LASER ENCLOSED POWER
COHERENT AVIA 355-400 SIGNAL INTERCONNECT BOARD 0176-396-00 REV:CA
COHERENT AVIA 355-400 SIGNAL INTERCONNECT BOARD 0176-396-00 REV:C
COHERENT AVIA CPU BOARD 0176-011-00 REV:DB
COHERENT AVIA CPU BOARD,0176-011-, 0176-011-00 REV:DB
COHERENT AVIA ULTRA DISPLAY BD III 0178-432-00 1042908 AB,1057382 AA,AND1781BST
COHERENT AVIA ULTRA DISPLAY BD III 0178-432-00 REV:AA,0170-378-00,AND1781BST
COHERENT AVIA VERDI MOTHER BOARD 0171-954-00 REV:AB
COHERENT AVIA VERDI MOTHER BOARD 1054644 REV:AB,0171-954-00
COHERENT AVIA-HP PULSE BOARD,0178-112-00,0178-112-01 REV:DB
COHERENT AVIA-HP PULSE BOARD,0178-112-00,0178-112-01 REV:DB
COHERENT COH SERVICE FIBER COUPLED DIODE LASER ENCLOSED POWER FOR ULTRA 355-2000
COHERENT COMPASS 315M,1096517-REV AA
COHERENT COMPASS 405-CW LASER HEAD
COHERENT COMPASS 561-25 LASER HEAD
COHERENT CONROLLER BD, I-300 ASSY 0160-322-00, FAB 0160-321-00 BOARD
COHERENT CONROLLER BOARD, INNOVA ASSY 0168-253-00, FAB 0168-252-00
COHERENT ENT.II ENTERPRISE LASER HEAD BOARD 0167-748-00 REV:D
COHERENT EOT-QSW 10W REV 1,0178-385-00
COHERENT FET POWER AMP BD [SHORT],A3RC53-2 100W,RFP 40-100 RE
COHERENT FET POWER AMP BD [SHORT],RFT 2305 1A100100,RFP 40-100 RE
COHERENT FET POWER AMP BD [SHORT],RFT 2526 S1A100100,RFP 40-100 RE
COHERENT FET POWER AMP BD [SHORT],RFT 3164 S1A100100,RFP 40-100 RE
COHERENT I-300 HEAD DRIVER BOARD ASSY 0160-448-00 REE
COHERENT INNOVA Laser Emission I300C-FRED
COHERENT MATRIX CONTROLLER 1143906,LASER CONTROLLER
COHERENT POWER DISPLAY BOARD ASSEMBLY 0169-430-01 AS PHOTOS
COHERENT POWER SUPPLY K 225i-HP OEM DC,0176-505-00 ECT25-C1010
COHERENT RADIUS 635 LASER ,1008053/AS, 1mm CIRCULAR, PS-304
COHERENT RADIUS 635 LASER ,1008053/AS, 637NM/25.0MW 1mm CIRCULAR, PS-304
COHERENT SAPPHIRE 488-200 LASER HEAD
COHERENT ULTRA 2000 HEAD BD 1006424 REV:AC
COHU CAMERA 49195401 66mm f/4 0271
Coilcraft 1008CS-822XJLB, 1008CS822XJLB, RF Inductors SMD 1008 8.2uH# 1720
Coilcraft Fixed Inductors 8.1nH Unshld, 0908SQ-8N1GLBV, 290,
Coilcraft Fixed Inductors 8.9nH Unshld, 0806SQ-8N9GLB, 297,
COILCRAFT Outgassing Compliant Power Inductors, AE611PYA103MSZ, 53
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