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Desenvolvimento de um Sistema de Conversão entre os Protocolos DNP3 e Modbus (TCC)

A low-cost bidirectional DNP3↔Modbus TCP gateway built with two ESP32s and WIZnet W5500 Ethernet, with measured latency and real-world pitfalls.

matthew

Published December 12, 2025

Original author: Pedro Henrique Nogacz · BrazilOriginal source (new tab)

Desenvolvimento de um Sistema de Conversão entre os Protocolos DNP3 e Modbus (TCC)

Project description

Low-cost DNP3 ↔ Modbus TCP Gateway on ESP32 + WIZnet W5500 (UFSC Undergraduate Thesis) Introduction This work is an undergraduate thesis (TCC) from UFSC that tackles a common real-world automation problem: bridging two widely used industrial protocols—DNP3 and Modbus TCP—when systems can’t “speak” the same language. The author implements a bidirectional protocol converter using two ESP32-WROOM-32 modules, each paired with a WIZnet W5500 Ethernet controller, and links the ESP32 pair via UART to separate and simplify the translation pipeline. Overview Goal: Convert traffic both ways between…

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