Check and "HEXShow" if you are working with hexadecimal bytes.

Instantly detects standard COM ports, virtual COM ports (USB-to-Serial chips like CH340, CP2102, FTDI), and Bluetooth serial interfaces.

Calculates Modbus CRC16, ADD, and XOR checksums on the fly before sending packets.

: Connects to various serial communication interfaces, including RS232, RS485, and USB-to-serial adapters. Display Modes : Supports both plain text and Hexadecimal (HEX) display and transmission. Automatic Sending : Includes a feature for timed/periodic data transmission. Protocol Analysis

: Choose your COM port from the dropdown; if it's not showing, click "Refresh."

What are you experiencing?

Locate and check the "English" checkbox usually found at the bottom of the main interface.

For the best experience, ensure your serial drivers are up to date using tools like Driver Talent to prevent "COM Port Not Found" errors. Reliable downloads can often be found through established hardware wiki pages like Waveshare .

SSCom allows you to define buttons for frequently used commands.

What (e.g., CH340, FTDI) are you using?

Are you working with or hexadecimal (HEX) protocol packets ?

Automatically discovers active COM ports on your PC.