Eucon runs on Ethernet with TCPIP as the low-level communication protocol. Using a tool like Wireshark, you can snag all the conversations between the host system and a Eucon controller.
As was pointed out, there might be some encryption on the communications, but I doubt that. In a perfect world you would use two PC's, a Eucon controller, and an intelligent network switch. One PC would be the audio host system, the other PC would run Wireshark, and both of those will be connected to the intelligent switch with the Eucon controller. In the network switch, you would "span" (duplicate all traffic to/from) the Eucon controller to the Wireshark PC.
After that is setup, everything that happens between the Eucon controller and the audio host will be seen on the Wireshark system where you can open up the packets and see the data that is being sent back and forth.
You could simply run Wireshark on your audio host system, but I prefer to have a separate system when I do captures.