Industrial Modbus RTU & TCP Communication with ESP32

ESP32工业通信实战：Modbus RTU与TCP

学习用ESP32掌握RS-485和Wi-Fi下的Modbus RTU与TCP协议，实现PLC数据读写、位操作及构建专业IIoT网关，适合有Arduino基础的进阶者。

Published 4/2026
Created by Orhan TARIKCI
MP4 | Video: h264, 1920×1080 | Audio: AAC, 44.1 KHz, 2 Ch
Level: Intermediate | Genre: eLearning | Language: English | Duration: 17 Lectures ( 3h 2m ) | Size: 1.81 GB

Master RS-485 and Wi-Fi for PLC, Sensors, and IIoT Gateway Applications: From Zero to Expert

What you’ll learn
✓ In-depth logic of Modbus RTU (RS-485) and Modbus TCP (Wi-Fi/Ethernet) protocols
✓ Techniques for reading/writing Real (Float) and Integer data from PLCs
✓ Techniques for reading/writing Real (Float) and Integer data from PLCs. Bit manipulation and masking to extract data from 16-bit registers
✓ Building a professional IIoT Gateway to bridge RTU Master and TCP Slave
✓ Building a professional IIoT Gateway to bridge RTU Master and TCP Slave. Industrial troubleshooting for hardware conflicts and timing errors

Requirements
● Basic experience with Arduino IDE and C++ programming.
● At least one ESP32 development board and an RS-485 module
● Fundamental knowledge of electronic circuits
● A curiosity for industrial protocols

Description
Are you ready to explore Modbus, the “universal language” of industrial automation, combined with the power of the ESP32? This course is designed to transform you into a professional IIoT developer through hands-on practice with real hardware, including PLCs, DHT11 sensors, PCF8574 I/O expanders, and RS-485 modules.

Throughout this training, you will uncover the intricacies of both Modbus RTU and TCP protocols. You will master professional techniques ranging from solving RS-485 timing issues to splitting and merging 32-bit Float data across 16-bit registers. The highlight of the course is the IIoT Gateway project, where you will build a bridge between serial lines and Wi-Fi networks, streaming field data directly to the cloud.

Beyond simple data reading, you will experience advanced control using PCF8574 expanders for relay management and bit-masking techniques to handle multiple digital statuses within a single register. Additionally, you will learn how to implement robust auto-reconnect logic for Wi-Fi failures and static IP configurations for stable master-slave communication. We will even dive into hardware-specific troubleshooting, such as why certain modules require specific pin handling.

This training promises to unlock the “black box” of industrial communication. Whether you are an engineering student, an automation tech, or a dedicated maker, by the end of this course, you will be capable of designing your own professional industrial devices and integrating existing PLC systems into the modern IoT world!