Configuring Loopback Plug
Loopback plug is very useful while developing and debugging serial communications programs. It internally connects the transmitting line (TxD) to the receiving line (RxD). Everything that is written to the virtual COM port can be immediately read from the same virtual COM port.
To create loopback plug, on the Port menu, click Add Loopback Plug.
Virtual Serial Port Kit supports COM ports overlapping. It means that virtual serial port can have the same name as existing physical COM port. If overlapped virtual COM port is created, it will be accessed instead of physical one.