XCTU frame generator (UART)


First of all, I have a XBee SX868 and his development board. I am trying to put into a frame the data that I received via UART from an Arduino but I am not able of achieving this goal.

I am using XCTU but I don’t know what parameters I should configure or what type of frame I should use (I am working in API mode 1). I tried using the ‘0x10 Transmit Request’ but It seems that I can only send what I write in the field ‘RF Data’ and not select a pin as DIN (UART).

If someone can help me with that I really apreciatte it!

Thank you!