The messages used to control the software are common to both the 100BASE-TX and USB interfaces.
(The communication methods are administered together, sp it is not possible to send/receive commands.)
TCP/IP control is used for 100BASE-TX LAN.
Use "2" as the last digit for the port number specified by "Communication Settings" in the instruction manual.
For example, if the initial port number is 880X, use 8802 as the final port number.
Communication Device Class (CDC) is used for USB.