RAK7431 for Node Device and RAK7289 As Gateway.
Class 3 is set.
We successfully send Uplink message from RAK7431 to RAK7289 and also receive final payload over MQTT.
For RAK7431 we set modbus read register (3) query in polling mode and modbus Response send over lora to mqtt in transparent mode.
Now We required to sent Modbus Write Query from MQTT to RAK7431 Node and set register in over Device.
So can you please share the method to do this.