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
BURNETT HRI 8016 CAST CUTTER 182106
BURNVOLL THURSTERS MAIN CONTROL PANEL
BURTON SAW SHK3041-16
BUSCH PENDANT PUMP CONTROLLER HANDHELD CONTROL UNIT
BUSCH R5 PUMP VACUUM RA 0040 F 503,0614130268 B14-160
BUSCH SV1040C0001NXX 346-420/200-240V 2-6A (AS PICTURED)
BUSCHJOST NORGREN 8240100.9136 SOLENOID VALVE 24V
BUSDIST -86 BOARD 208-500104-2,281-500104
BUSHING DRUM KIT A2000 #21296 (REPLACES WARM 69637)
BUSM2-01,KFV00004-001 & BUSM1-01 KFV00003-001 BOARD
BUSSMANN 100CJ 600VAC 100A (PKG OF 10) NSFS
BUSSMANN 15.5FFVHK100E
Bussmann 170M4563, Fuses 450A 690V 1GKN/AR UC, 6, #1212Z
Bussmann Eaton Semiconductor FUSE 170M7078, Specialty Fuses 1000A 690V 4BKN/65
Bussmann FUSE SB 5A 250V 6.3X32MM GL, H313005, 394,
BUYERS # QDWC162 WING TYPE COUPLER 1" FEMALE END ONLY
BUYERS PH15 15 TON CAPACITY HAEVTY DUTY FORGED PINTLE HOOK
BUYERS PH15 15 TON CAPACITY HAEVTY DUTY FORGED PINTLE HOOK
BUYERS SLH100 SECURITY CARBON STEEL ZINC PLATED LOCK HASP, CYLINDER NOT INCLUDED
BW BY HONEYWELL GASALERT MICRO CHARGERGAMIC-C07
BW GAS DETECTOR PUMP TEST CAP & HOSE - LOT OF 10 PCS
BW HONEYWELL ADS-6AE-06 06030E-EU CHARGER FOR MICROCLIP XT,XL & MAX XTII
BYPASS Angle Valve NW80 & HUMPHREY 062-4E1-36,
BYPASS WITH PLUNGER NW100 & BIMBA MRS-315-DZ, HUMPHREY 062-4E1-36,
BYRON JACKSON M856 FILLET 4113
BYSTRONIC B-009682 LS80038921 KA01032328
BYSTRONIC B-702111 50A
BYTE RUNNER TC020 16 BIT ISA EPP / ECP PARALELL PORT CARD ad2T6
C&D TECHNOLOGIES ARE48AC6E 120/208/240VAC 4/3.3/2A
C&K SWITCH TOGGLE SPDT 5A 120V, 7103TZQE, 56, #1609V7
C.C.JENSEN 880957 SHUT OFF VALVE 1/4" - 6000 Psi-200°F
C.C.JENSEN TEMPERATURE TRANSMITTER FOR VARNISH REMOVAL UNIT
C-1136TZ COMPRESSOR AND CLUTCH
CABLE [V2E],HF/AC PR PM6,2L82-054340-11,2L86-066914-11 D, RF GENE HF AC-IN
CABLE [V2E],LF/AC PR PM6,2L82-054340-11,2L86-066920-11 D, RF GENE LF AC-IN
CABLE 22 AWG 12 CONDUCTOR X 10 FT with DP25 POS, MALE & FEMALE, 34 Cables
CABLE MASTER POWER CORD CS164-076, 72" 14/3 SJTO 5-20P, 120V 2A, GREY, 50
Cabletron Ethernet EMM-E6, EMME6, BRIM-E100, # 1226H
CACTUS TECHNOLOGIES KC2GR-503-99 COMPACTFLASH 2GB MEMORY CARD - LOT OFPCS.
Cadence Company ASSY PCB Board 2500000012102 SELL "AS-IS"
CAEM TU VDT THERMOSTAT RANGE 60-350°C
CAJON 316L-4TB7-9, 316L4TB79, Tube Butt Weld 1/4" 34, #1545Q15
CAJON 6LV-6MW-91P, 6LV6MW91P, Tribow Tee+Elbow, 13, #1545Q6
CAJON 6LV-6MW-9P, 6LV6MW9P, Union Elbow, 3/8 in, 13, #1545Q8
CAJON FLEXIBLE TUBING 1" X 16", 321-16-X-12-B2, 32116X12B2, #154E2
CAJON REDUCING TEE 1/2" X 1/4", 6LV-8MW-3-8-4, 16, #110M4
CAJON Reducing Union, 1/2" X 1/4", 6LV-8MW-6-4, #Z16RC
CAJON SS-4-VCR-6-DMP, SS4VCR6DMP, Double Male Union 8 #1545Q17
CAJON SS-4-WVCR-6-DF, SS4WVCR6DF, Rotating Female, #1545Q13
CAJON SS-8-VCR-4, SS8VCR4, Male Nut 1/2", 14, #1545Q12
CAJON SS-8-VCR-6-DM, SS8VCR6DM, Double Male Union 1/2", 18 #1545Q11
CAJON TEE UNION 1" VCR, M-32, M32, SS-16-VCR-T, SS16VCRT,
Cajon/SWAGELOK PLUG 1/4” VCR, SS-4-VCR-P, SS4VCRP, 107,
CALA 035, SEHO WAVE ELEVATOR BOARD, 0351, CL600079, ECB03075,
CALA SEHO WAVE ELEVATOR BOARD, 0483, CL00079, ECB03074,
CALCAT #D182-69 83413 CATALYTIC CONVERTERS
CALEFFI 624000 IMMERSION SAFETY THERMOSTAT WITH MANUAL RESET
CALEFFI WMF 33.1394.3000 REPLACEMENT CARTRIDGE
California Instruments 1501IX, Precision Programmable AC Source, 230V
California Instruments 3091-LD, AC Load 3000W, 115 VAC Input
CALMAR LASER FPL-M2UFF
CALORITECH MH22F1C6G1
CAMBRIDGE SENSOTEC RAPIDOX 2100,
Camco Torq Gard TGM-6 Overload Clutch 14mm Bore, TGM 6, TGM6,
CAMERA LINK PoCL Bypass REPEATER RCL-20X2
CAMERA LINK PoCL Bypass REPEATER RCL-30X2
CAMERA STC-A33D-60,NAVITAR 01-19691 1-61400,S01-34689,ASM 03-20752-04
CAMOZZ 60M2L032A0035S01
CAMOZZ 60M2L040A00
Campact Air RFH2X2TR, RFH2X2,TR, #110D
CAMPBELL CHAIN & FITTINGS #4099V WORKING LOADTON MODEL 7339764
CAMPBELL SCIENTIFIC INC CR5000
CAMPBELL SCIENTIFIC INC CR5000 COVER DAMAGED
CANADIAN M.O MARINE BAROGRAPH TYPE B
CANASTRA AG TEMPERATURE REGULATOR TR 792
CANBERRA ADM-606
CANDY CONTROLS DIFF7 SS241CT 120VAC 0.4A
CANON #EF 16-35mm F/2.8L II USM W/LENS LP1319 & LES HOOD EW-88
CANON 0BM07,DG6-0060, MP0402A BOARD
CANON ACC PCB BOARD BG6-4417,BH8-2024-02
CANON ACC-1,BG9-3502,BH8-0672-03 BOARD
CANON ADDA PCB BOARD BH5-7897,AD/DA Y BG6-4467,DSP8920
CANON ADDA PCB BOARD BH5-7897,DSP8920 ,AD/DA X0Z BG6-4475
CANON AL CONT BASE PCB BG6-5737,BG8-1701, BH8-2121-01,+ AL CONT UP BG8-1702,BH8
CANON AXIS BG6-4472 BOARD HP 10897B LASER AXIS
CANON AXIS BG6-4473 BOARD HP 10897B LASER AXIS
CANON AXIS X BG6-4471 BOARD HP 10897B LASER AXIS
CANON AXIS YM BG6-4469 BOARD HP 10897B LASER AXIS
CANON BG6-1259,BH8-1319-01 BOARD
CANON BG6-1277 BOARD XESTEK XK2-C86 OLD STOCK
CANON BG6-3495,BG4-3811 BH8-1394-02 DISK UNIT-II
CANON BG6-4476 BOARD MTT DSP8040
CANON BG6-7316-000, BH8-2071-01,BG8-1644 AS CONTROL PCB BOARD
CANON BG6-9357,BH8-2696-01 SP PCB BOARD
CANON BG7-1164 MMB BH8-1279-01,BH8-1280-02 BOARD
CANON BG9-9668-02,P1-5ZS C.B 2480 I=8.30
CANON BG9-9668-02,P1-5ZS C.B 2536 I=6.80
CANON BG9-9668-02,P1-5ZS C.B 2602 I=6.71
CANON BG9-9668-02,P2-5ZS C.B 2491 I=6.60
CANON BG9-9668-02,P2-5ZS C.B 2627 I=7.81
CANON BG9-9668-02,P3-5ZS C.B 2473 I=6.34
CANON BG9-9668-02,P3-5ZS C.B 2496 I=7.40
CANON BG9-9668-02,P3-5ZS C.B 2564 I=6.07
CANON BH5-6278 BOARD
CANON BH5-7901 BG6-4477 MTT DSP8936 20 SLOT MOTHER S PCB BOARD
CANON BH5-7901,BG6-4477,20 SLOT MOTHER S PCB BOARD MTT DSP8936
CANON BH8-1181-02 BG8-1743,MPA5000 BOARD
CANON BH8-1181-02,BG8-1743 BOARD
CANON BH8-1181-02,BG9-9669 BOARD
CANON BH8-1830-01,BG4-6633,TPB-S.V0 TV-BACK PLANE BOARD
CANON BH8-2024-02,BG6-4417 ACC PCB BOARD
CANON BH8-2025-02,BG6-4418 IO DST PCB BOARD
CANON BH8-2052-02,BG6-4418 IO DST PCB BOARD
CANON BH8-2066-01,BG8 -1813,BG6-7033 MVPCB3 BOARD
CANON BH8-2066-01,BG8-1814,BG6-7034 MVPCB4 BOARD
CANON BH8-2070-02,BG6-7031 ,BG8-1811 BOARD
CANON BH8-2072-01,BG6-5894,BG8-1708,POWER SLAVE PCB BOARD
CANON BH8-2073-01,BG6-4924 PLP BOARD
CANON BH8-2079-02,BG6-7467 ,BG8-1654 XMG/ARC CONT PCB BOARD
CANON BH8-2079-02,BG6-7467-000,BG8-1654,XMG/ARC CONT PCB BOARD
CANON BH8-2085-01,BG6-7340-000 ,BG8-1655 SHU CONTROL PCB BOARD
CANON BH8-2121-01 BG6-5737 BG8-1701 + BH8-2122-01 BG6-5722 BG8-1702
CANON BH8-2122-01,BG6-5722 ,BG8-1702 AL CONT UP PCB BOARD
CANON BH8-2123-01 BG6-5571 BG8-1703 BOARD
CANON BH8-2123-01,BG6-7482-000 ,BG8-1703 BOARD
CANON BH8-2123-01,BG8-1706,BG6-7476,XMB2 CONT PCB BOARD
CANON BH8-2164-01 DRV IF1 PCB/MPA5000 BOARD BG8-1704,BG6-5906
CANON BH8-2265-01 BG6-6117 BG8-1737 FI CONT PCB BOARD AS PHOTOS
CANON BH8-2265-01,BG6-6117,BG8-1737 BOARD
CANON BH8-2269-01 BG6-6239 MICRO PMD IF PCB BOARD
CANON BH8-2493-01 BG6-7026 XY PCB2 BOARD
CANON BH8-2553-01 BG6-7304 XZ PCBBOARD