ESP32 I Modbus I Connect and Receive Data from Multiple RS485 Devices with Serial Port

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https://www.youtube.com/watch?v=cbAloQcEKUw

將ESP32作為Modbus RTU Master，兩台具RS485通訊功能的TAIE 溫控器(Devices)為Modbus RTU Slave，藉由serial port和IDNO的設定，使ESP32可與兩台TAIE 溫控器請求資料，為建立BS(Browser/Server)系統的前期調適作業。

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