Modbus MQTT-RTU Converter
Controlling Modbus device via the internet network. This firmware uses for ESP8266 Wi-Fi Module such as NodeMCU board.
Application Example Modbus MQTT Modbus RTU
How to use firmware
- Download .bin file to your computer.
- Download firmware to ESP8266 Wi-Fi module by NodeMCU Flasher
- Connect module to Modbus RTU device via serial port with TTL.
- Power ON the module and connect Wi-Fi from ESP8266 Wi-Fi module such as MB_MQTT_XXXX.
- Open URL http://192.168.4.1
- Settings a serial communication, MQTT broker and Wi-Fi network.
- Press 'Save' and waiting success.
- Download and install Modbus Online
- Open Modbus Online and setting MQTT broker
- Type 'DeviceID' of ESP8266 Wi-Fi module that get from Wi-Fi name in AP mode (MB_MQTT_XXXX)
- Press 'Start' for running TCP service
- Download and install Modbus Poll
- Open Modbus Poll and set connection to TCP/IP communications by getting IP address and port from Modbus Online software
- Read/Write register of Modbus RTU device by Modbus Poll