G'Day N5XTH,

Your description is a little confusing. I don't have an ICOM 7100 so am a little in the dark - so to speak.

In the amateur radio world, USB connections to radios can be of two types ... native USB ports, or USB ports that emulate RS232 COMx devices.

I don't think LOGic knows anything about "native USB devices". This way of operating needs the special software usually specific to the radio.

LOGic knows about USB ports that emulate an RS232 COMx port, but needs to be told which specific COMx port to use.

Have you told LOGic the correct COMx port to use?

Change mode? ... from what Mode to what other mode?

LOGic found something. What then works? ... anything?

Pictures tell a thousand words. Post some images of what LOGic displays. That would be a lot of help to others on the forum.