XM430-W350-T printing random stuff on Monitor

I am trying to communicate with the motor (Dynamixel XM430-W350-T). I am using Arduino Uno with the Dynamixel shield. I ordered the USB Downloader so that I can communicate with the Motor (as shown in this video - How to use Arduino Uno with DYNAMIXEL || Dynamixel Shield walkthrough || Arduino Setup for DYNAMIXEL - YouTube ) but I am unable to do so.

Hi @Suketu

If you have purchased the LN-101, make sure to use the DEBUG_SERIAL to print any message through the LN-101.
for example,

DEBUG_SERIAL.print("Hello World");

In your Arduino IDE, you’ll need to select the proper port that is assigned to the LN-101 from the Tools menu before opening the serial monitor.