Hi Eugene,
I know English is not your native language, but I admit that I really didn't understand your question.
I will do my best to answer what I think you are asking, so feel free to ask again if I misunderstood
you.
I assume that you have CAT coming over the network through COM2 on the RRC's. This is done by
connecting a serial cable between the TS-480 CAT (serial) port and the RRC COM2 and setting COM2
in the RRC to TS-480 mode-5.
On the control side, you can also set COM2 to mode-5. Then you can use either a standard serial cable
on COM2 for CAT, or set "use USB COM port as COM2" to yes to use a USB cable as well.
If you need an additional COM port, you can use the RRC COM1 port for that purpose, assuming this port
is not already being used for another purpose, such as rotor control. To use that, change COM1 to mode-6
or 7. Then just connect a serial cable to COM1 and use that for CAT as well, or change COM1 to use USB as
I described above. Note that the pinout for COM1 is different (mirrored) from COM2, use the manual if you do
not plan to use USB for that port. Also note that the speed of COM1 does not have to be the same as COM2.
I hope this answers your question. If not, just let us know.
73,
Mitch DJ0QN / K7DX