Sistema de avaliação e diagnóstico de falhas em redes de comunicação MODBUS/RTU em chão de fábrica

Abstract

The development of electronics and information technology in the 20th century provided the advancement and use of data communication networks to carry out exchange of information between computers. The industry took advantage of this new concept and incorporated it into equipment with the aim of exchanging information from the process, with some advantages over the traditional analogue method, for cabling savings, for example, aiming at cost reduction. In 1979 the Modicon standardized an open communication protocol called Modbus, which was initially designed for serial communication, but over the years this protocol became widely used in automation systems industrial, and to this day they still are. Despite the large participation of this technology in the industrial market, the domain of the same, mainly, by the professionals of maintenance, is still quite restricted. Therefore, the objective of this work is to propose a system that enables the evaluation and diagnosis of communication failures between industrial equipment with RS-232/485 physical media standard and protocol Modbus/RTU.