描述
根据硬件结构的不同,可以将PLC分为整体式、模块式和混合式。
1.整体式PLC
整体式又叫做单元式或机箱式,它的体积小、价格低,对箱体式PLC,有一块CPU板、I/O板、显示面板、内存块、电源等,当然按CPU性能分成若干型号,并按I/O点数又有若干规格。对模块式PLC,有CPU模块、I/O模块、内存、电源模块、底板或机架。无任哪种结构类型的PLC,都属于总线式开放型结构,其I/O能力可按用户需要进行扩展与组合。
2.模块式PLC
大、中型PLC一般采用模块式结构,它由机架和模块组成,模块插在模块插座上,后者焊接在机架中的总线连接板上,有不同槽数的机架供用户选用,如果一个机架容纳不下选用的模块,可以增设一个或数个扩展机架,各机架之间用接口模块和电缆相连。
用户可以选用不同档次的CPU模块、品种繁多的I/O模块和特殊功能块,对硬件配置的选择余地较大,维修时更换模块也很方便。
3.CPU模块中的存储器
存储器分为系统程序存储器和用户程序存储器,系统程序相当于个人计算机中的操作系统,它使PLC具有基本的智能,能完成PLC设计者的规定的各种工作。系统程序由PLC的生厂家设计并固定化在ROM(只读存储器)中,用户不能读取。用户程序由用户设计,它使PLC能完成用户要球的特定功能,用户程序存储器的容量以字节(B)为单位。
欧美品牌停产的,常用的“PLC”备品备件
我司产品应用于以下领域:
1,《发电厂DCS监控系统》
2,《智能平钢化炉系统制造》
3,《PLC可编程输送控制系统》
4,《DCS集散控制系统》
5,《智能型消防供水控制系统》
6,《化工厂药液恒流量计算机控制系统》
7,《电气控制系统》造纸,印染生产线,变电站综合自动化控制系列
本特利,英维思,伍德沃德,福克斯波罗、西屋、瑞恩、施耐德莫迪康、ABB、AB、西门子、摩托罗拉、GE发那科、安川、博世力士乐,ACSO,力士乐等各大品牌的DCS系统配件,机器人系统配件,大型伺服系统备件。
C60415 Unitek Micropull IV Wire Bond Pull Tester 1000g
C61654 Unitek Micropull IV Wire Bond Pull Tester RS232
N72714 Perkin Elmer Aanalyst 100 Atomic Spectrometer
N72711 Seiko D-Tran XM3106B Robotic Arm
C51193 Agilent E4406A Transmitter Tester w/ 202 300 BAF
N72004 Eppendorf 5804 Multipurpose Centrifuge w/Rotor
C52517 Agilent E4406A Transmitter Tester w/ 202 300 BAH
N59001 Unitek Micropull IV Wire Bond Pull Tester
N70041 Rainin Varian Dynamax SD-200 UV-1 FC-1 HPLC Sys.
AE43755 RECIF SA Wafer Scribe Reader IDLW8 System
C69112 Spectra Multi-Quad LMI Gas Analyzer w/ Turbo Vac
L65211 DEK 248ce Semi-Automatic Screen Printer
A41046 ADE Technologies DiskMapper Model M2 System
N63492 Fluke Networks Optiview Workgroup Analyzer
N67906 Tektronix RTPA2A TekConnect Probe Adapter NIB
A66346 Piller Apostar AS50 UPS System 50 kVA, 480V 85A
N53546 Perkin Elmer 300 Micralign Projec. Mask Aligner
C69602 Logitech 2125 Polishing / Bonding Jig
A58951 K&S 6491 Semi-Automatic Die Bonder
A71987 Varian Prostar Autosampler 420, 210, 325, 701
C54973 Agilent 16950A 600MHz State/4GHz Timing/4Meg Mem
C54587 Agilent 16950A 600MHz State/4GHz Timing 4Meg Mem
G53498 Two Alcatel IPUP A100L Dry Vacuum Pumps
N71355 Isel Robotik Wafer Handling Robot 10-21-0015
C72658 FST Fine Semitech Dual Recirculating Chiller
N71514 Leitz Wetzlar Trinocular Microscope w/Stage
N72005 Eurotherm TU1451 SCR Power Controller
C51174 HP E4406A Transmitter Tester 7MHz-4GHz w/Opt BAH
N59032 Signatone S-1007S Manual Probe Station S1007S
N63395 K&S 1470-4 Automatic Wedge Bonder
C51195 HP E4406A VSA Transmitter Tester w/BAH, 204, UK6
C51194 Agilent E4406A Transmitter Tester w/ Opt 202 BAH
G72332 Agilent G1314B VWD Variable Wavelength Detector
G72403 Heidolph Laborota 4001 & Heizbad HB Digital
G71854 NSK XY-HRS120-RH2SN?F Linear Stage w/Ballscrew
G72622 Brinkman Metrohm 784 KFP Titrino & 703 Ti Stand
K72692 Quester Tech. UFT10-02 Liquid Source Cabinet LSC
K72693 Cleansorb CS096DCD Dry Bed Absorber Cabinet
C55171 Agilent 16950A 600MHz State/4GHz Timing/1Meg Mem
A69921 (2) Balanced Power II BPII25 UPS System 25 kVa
N72803 (2) Christie Electrohome Roadie S12 Projectors
N57984 ABI Prism 6700 Auto Nucleic Acid Workstation
C70346 Veeco Dektek SXM Atomic Force Microscope Control
L67921 Hughes Wire Bonder System WD-8700D1
A69920 Leybold Coolpak 6200 Compressor w/ Cold Head
A63423 Bemco Inc. FC-77 Cart Environmental Pump System
A62562 Varian VE10 Vacuum Evaporator, Edwards E2M5
N58955 Signatone S-250-5 Wafer Prober w/ B&L Microzoom
N58956 3S 8013 Pick & Place Inspection Wafer Station
N69000 Instrumentation IL ACL 8000 Coagulation Analyzer
A50159 Tenney Six Engineering T6S Chamber 21*22*23H
N56306 Edwards EH500A Mechanical Booster Pump D90SD
Y70234 Crest Ultrasonic Cleaner & Ultrasonic Generator
C66608 Dage TP1KG Tweezer Load Cell 1kg for 2400PC
A72127 Waters 600 Multisolvent Delivery System HPLC
A72125 Waters 4000 Pump System Controller HPLC
A72126 Coherent Innova 90 Argon Ion Laser System
N65584 Perkin Elmer 1002700 Vacuum Ion Pump System
C51594 Agilent 16950A 600MHz State/4GHz Timing/1Meg Mem