Design of Wireless Industrial Internet of Things Gateway Based on ESP32

The digital transformation of the manufacturing industry has led to the rise of Manufacturing Execution Systems (MES) for production management. To overcome the challenge of collecting diverse data within the MES system, we developed a wireless Industrial Internet of Things (IIoT) gateway based on the ESP32 module. This gateway enables the configuration of data collection and transmission parameters through the upper computer and utilizes the S7 and MQTT protocols for data extraction, protocol conversion, and cloud integration. System testing confirms its effectiveness in wirelessly connecting and collecting data from up to 16 PLC devices, including 1200 industrial controllers.