The I/O Controller 2 is used in this example.
I/O Controller 2 can be connected to a PC over the LAN in order to use the I/O Controller 2's serial port as a Virtual Serial Port (VSP). HW group offers HW VSP – a free virtual serial port application that supports up to 100 remote serial ports (support includes Windows 7 and x64 systems). I/O Controller 2 offers a truly full RS-232 serial port (9 pins).
Two devices can be connected back-to-back (Box-2-Box mode). In this mode, the digital I/O as well as the RS232/485 serial line are extended (tunneled) over the LAN.