Virtual Serial Ports

VIrCom, thats a blast from the past; still in use by the sound of it.

these device normally have a few things to line up.

  1. The RS232 port is selected on the device (if it can do more then just RS232). Nomrally this will be in the setup for the device. Setup all the normal comms settings, e.g. 8 Data Bits 1 start, 1 stop no parity etc as per your needs.
    Note: This is for the comms from the realy world com port on the remote device to this unit.

  2. On the unit setup to be either a client or server.
    Client will attempt to connect to the remote PC running the software.
    Server will wait for the remote PC server to connect to it.

3, In the PC Software create a virtual comm port ensure the correct matching details. e.g. if this device is a server, the PC will be a client and enter the IP address and port that this unit is set to listen on.

  1. Connect your software to the virtual com port like any other com port.

If all that sounds like what you have done, can you post some screen shots etc of all the settings pages.