Can multiple programs use the same serial port?

In Windows, you can not open a single port simultaneously by multiple applications. It is impossible, it is a “feature” Windows.

How do I share a port between applications?

How to share COM ports between applications?

1. Launch VSPD Pro on your Windows machine.
2. Open the “Share” tab and select the serial port that you intend to share.
3. Choose the applications that will be sharing access to the port and set their custom rights.

How many devices can be connected to a serial port?

There is also a practical limit on resources available inside the PC to allocate to Serial Ports. Multiple devices can be tied together by converting the signal at each point to a multi-drop bus, like RS-485. This allows up to 32 devices on a single network without repeaters.

Can you add a serial port to a virtual machine?

You can set up the virtual serial port in a virtual machine to use a physical serial port on the host computer. Select Serial Port, then click Next. Select Use Physical Serial Port, then choose the port on the host computer that you want to use for this serial connection.

How to share a serial port between applications?

Open the “Share” tab and select the serial port that you intend to share. Choose the applications that will be sharing access to the port and set their custom rights. You will need to specify the full path to each application and then click the “Set custom rights” button to proceed.

How to send strings to serial ports in Visual Basic?

This topic describes how to use My.Computer.Ports to send strings to the computer’s serial ports in Visual Basic. This example sends a string to the COM1 serial port. You may need to use a different serial port on your computer. Use the My.Computer.Ports.OpenSerialPort method to obtain a reference to the port.

Can a serial data splitter share a COM port?

RS232 Splitter is a flexible software enables you to share one physical COM port among multiple applications. The connected applications can share the COM port and any device that is attached to the interface.

How does virtual serial port driver pro work?

Virtual Serial Port Driver PRO is a flexible software enables you to share one physical COM port among multiple applications. The connected applications can share the COM port and any device that is attached to the interface.