![]() The connections of the ESP32 board with the RS485 module are the same as NodeMCU. For example if I type 50, It will have to update the slave device quantity and add 50. ![]() The overview reflects a typical programming workflow and is broken down into the sections provided below: Modbus Port Initialization - Initialization of Modbus controller interface for the selected port. ![]() In this project we are using the CAS Modbus stack ( most recent commit a year ago Esp32modbustcp ⭐ 53. Modbus Client aka Master for ESP32 built for the Arduino framework for ESP32 non blocking API. The Modbus serial communication protocol is de facto standard protocol widely used to connect industrial electronic devices. It ESP32 POE board as a Modbus server to a Siemens PLC. ![]() Both devices are running in MicroPytthon environment. ![]()
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