Controle Industrial com Modbus/TCP e Microcontrolador ESP8266

Abstract

The following course conclusion work implements remote communication to the discrete controlapplication of an industrial plant through the ESP8266 microcontroller embedded in the WemosD1 mini development board. Remote communication is carried out by the Message Queue Tele-metry Transport (MQTT) protocol, responsible for sending commands and receiving informationfrom the system, even in different Wi-Fi networks. The Wemos D1 mini allows the realization ofa physical-remote interface between the driving system, where the discrete controller is beingapplied, and a remote supervision unit. The implementation and communication is performed bytheModbus/TCP protocol. The controller executed by the microprocessor is a discrete propor-tional integral derivative (PID) properly designed and contemplating the dynamics of delay ofpackets linked to the communication via Transport Control Protocol (TCP) wireless. packets,even in a local network, a discrete low-pass filter was implemented and applied to the controlloop feedback. This work presents results that show the possibility of establishing wirelesscommunication between smart devices with a low cost and easy to implement developmentboard, being applicable in smart homes, monitoring and remote alarm.