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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
1

Sistema web did?tico para a supervis?o de redes fieldbus

Cavalcanti, Bruno J?come 31 January 2011 (has links)
Made available in DSpace on 2014-12-17T14:55:46Z (GMT). No. of bitstreams: 1 BrunoJC_DISSERT_1-60.pdf: 4138236 bytes, checksum: 7d92583d3159abe9ed3a9cb5f3d51992 (MD5) Previous issue date: 2011-01-31 / Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior / Technological evolution of industrial automation systems has been guided by the dillema between flexibilization and confiability on the integration between devices and control supervisory systems. However, there are few supervisory systems whose attributions can also comprehend the teaching of the communication process that happens behind this technological integration, where those which are available are little flexible about accessibility and reach of patterns. On this context, we present the first module of a didactic supervisory system, accessible through Web, applied on the teaching of the main fieldbus protocols. The application owns a module that automatically discovers the network topology being used and allows students and professionals of automation to obtain a more practical knowledgment by exchanging messages with a PLC, allowing those who are involved to know with more details the communication process of an automation supervisory system. By the fact of being available through Web, the system will allow a remote access to the PLC, comprehending a larger number of users. This first module is focused on the Modbus protocol (TCP and RTU/ASCII) / A evolu??o tecnol?gica dos sistemas de automa??o industrial tem sido norteada pelo dilema entre flexibiliza??o e confiabilidade na integra??o entre equipamentos e sistemas supervis?rios de controle. No entanto, s?o poucos os sistemas supervis?rios cujas atribui??es tamb?m abrangem o ensino do processo de comunica??o que ocorre por tr?s dessa integra??o tecnol?gica, sendo os existentes pouco flex?veis no que se refere ao acesso e ? abrang?ncia de padr?es. Este trabalho apresenta um sistema supervis?rio did?tico, acess?vel via Web, que ? utilizado no ensino dos principais protocolos Fieldbus. O aplicativo proposto possui um m?dulo de descoberta autom?tica da topologia da rede usada e permite que alunos e/ou profissionais da ?rea de automa??o obtenham um conhecimento mais pr?tico desses protocolos ao auxiliar na constru??o e envio de quadros pr?prios da rede Fieldbus considerada, propiciando aos envolvidos um conhecimento mais detalhado do processo de comunica??o que ocorre entre um sistema supervis?rio de automa??o e os dispositivos escravos utilizados na rede. Pelo fato de ser uma aplica??o Web, al?m de contemplar o modo de ensino presencial, o sistema proposto permite o acesso remoto ao CLP, comportando um n?mero bem maior de usu?rios e tornando mais abrangente seu universo de aplica??o. Este primeiro m?dulo ? voltado para o protocolo Modbus (abrangendo suas varia??es TCP e Serial RTU/ASCII)

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