Consider this a feature request. I have seen others requesting / asking the same question that I did with the same not-quite-direct answer. On LINUX hosts:
Please add a broadcast capability to CodeWarrior TAPs connected via Ethernet. Meaning, CodeWarrior sends broadcast packet(s) asking TAPs to respond. Any TAP that responds is interrogated to determine what type of TAP it is and, if the correct type, the response is used to populate the TAP selection box.
Please add a capability to select USB-connected TAP(s) by serial number. It appears that this capability already exists since the USB serial number can be probed and selected on the TAP connection dialog.