Streamline Your Automation with Advanced Virtual Serial Port Control

Virtual Serial Port Control is a specialized Software Development Kit (SDK) created by FabulaTech that allows developers to programmatically create and fully control virtual serial (COM) ports within Windows operating systems. It acts as a bridge between legacy serial communication software and custom modern applications, completely emulating the behavior of physical hardware serial ports. Core Functionality

Hardware Emulation: Created virtual COM ports appear in the Windows Device Manager exactly like standard physical RS-232, RS-422, or RS-485 hardware.

Bidirectional Communication: Legacy communication applications write data to the virtual port, which is intercepted by your custom program via the SDK. Your program can then feed custom responses back through the port.

Event-Driven Architecture: The SDK leverages an event-driven model. Developers do not need to constantly poll or check the port state; instead, functions are triggered automatically when data arrives or signal states change.

Signal Line Control: It gives developers complete control to monitor and alter hardware line states such as DTR, RTS, CTS, DSR, DCD, and RI, as well as strict baud rate emulation. Supported Development Environments

The SDK provides flexible integration options for Windows applications:

Dynamic Link Library (DLL): Offers standard API functions like FtVspcCreatePort and FtVspcWrite for C/C++ environments.

ActiveX Component: Simplifies implementation for environments supporting COM/ActiveX.

.NET Component: Tailored for managed code development in C# or VB.NET. Primary Use Cases

Serial Device Emulation: Simulating a physical hardware unit (like a GPS receiver, barcode scanner, or industrial sensor) entirely in software so you can test desktop applications without physical equipment.

Legacy Software Support: Intercepting and rerouting data from older software that only understands traditional COM ports, allowing it to interface with modern networks, databases, or cloud infrastructure.

Testing and Debugging: Streamlining automated testing environments by creating dynamic pairs of ports to analyze data flows and stress-test serial communication boundaries.

To see how a similar virtual serial port framework functions to bundle, split, and pair COM ports in real time, watch this tutorial: How to create virtual serial port? Electronic Team, Inc. YouTube · Jan 21, 2026