In order to read and analyze serial port data, you should start a serial monitoring session. Here’s how you can do this using Serial Port Monitor:
Download the software and install it on your Windows PC;
Start the program and select Session > New session in the main menu;
In the window that will open, select the COM ports you would like to monitor;
Then, select the viewing mode for captured serial data. There are five data visualizers: Table, Dump, Line, Terminal and Modbus views;
Choose between the Start monitoring now and Start in new window options;
Check the boxes next to the events you want to capture – Create/Close, Read/Write, Device Control;
Click Start monitoring to activate your session.