When I tested it, I can not get +++ or +++ (cr) from the terminal +++ (CR) (LF).
AND RESET BUTTORN must be sent within 1 second after pressing (XR21 PORT )
CHANGED TERMINAL SETUP [Oxod][oxoa] CR+LF .
OR RESET SEND +++ DELAY 10 SEC RESET SEND +++ DELAY 10 SEC….
If communication port is not set correctly after reset, it should be repeated
Thank You.
If you want to communicate between two xdot modules with at command