Multi-Function Serial/Network Communication

One tool for serial and network debugging

• Multiple connection types

  Supports Serial, TCP Client, TCP Server and UDP communication

• Dual format display

  Supports both ASCII and HEX display with instant switching

• Quick commands

  Up to 50 quick commands with timed auto-send

• Auto reply

  Smart auto reply with exact, contains and regex matching

• Built-in oscilloscope

  Data visualization oscilloscope with dual-channel display

• Modbus protocol

  Full support for Modbus RTU/TCP with all common function codes

• Multi-language

  Built-in Traditional Chinese, Simplified Chinese and English

• Settings import/export

  Save or load all settings in one click for fast migration

Main interface

Serial and network connection settings

Serial connection

Network connection (TCP/UDP)

Data display area

Display formats

[14:32:15] AT+VER\r\n
[14:32:15] VERSION:2.1.32\r\n

[14:32:15] 41 54 2B 56 45 52 0D 0A
[14:32:15] 56 45 52 53 49 4F 4E 3A

Options

Send panel

Quick commands: one-click sending

Quick commands let you preset commonly used send content for one-click sending. Up to 50 quick commands are supported.

Usage examples

// AT command test
Name: AT, Content: AT, Type: ASCII
// HEX protocol frame
Name: Heartbeat, Content: A5 5A 01 00 00 01, Type: HEX, Interval: 1000 ms

Auto reply: device simulation and protocol testing

Auto reply sends the corresponding reply automatically based on the received data, ideal for device simulation and protocol testing.

Modbus protocol

When "Modbus Protocol" is checked, the right panel switches to a dedicated Modbus panel supporting both RTU and TCP modes.

Supported function codes

Oscilloscope

A built-in data visualization oscilloscope displays serial receive/send data as waveforms, suitable for signal analysis and debugging.

Export / import settings

All settings (connection configuration, quick commands, auto-reply rules, etc.) can be exported as a JSON file for backup or migration between computers.

• Export settings

  Click the save icon in the title bar to export all current settings as a JSON file

• Import settings

  Click the folder icon in the title bar and choose a previously exported JSON file to load settings

Settings include

• Connection type and parameters
• Serial/network connection configuration
• Data format preference (ASCII/HEX)
• Display options (auto scroll, timestamp)
• Quick commands list
• Auto reply rules
• Modbus protocol configuration

Multi-language support

WS-SSCOM supports three languages and detects the system language automatically. You can also switch manually.

Keyboard shortcuts and system requirements

Frequently asked questions

• Why can't I find the serial port?

  Please check: 1) the device is properly connected to the computer; 2) the correct serial port driver is installed; 3) the COM port is visible in Device Manager. The program scans available ports automatically every 2 seconds.

• What if HEX sending fails?

  Check the HEX format: it can only contain 0-9 and A-F and must have an even number of characters. An error prompt appears below the input box.

• How do I save communication data?

  Click the download icon in the receive or send pane header to save the data as a .txt file. The filename includes a timestamp automatically.

• Are settings saved automatically?

  Yes. All settings (connection configuration, quick commands, auto-reply rules, etc.) are saved locally and loaded automatically the next time you start the program.