No, I can not...but now for different reason. When the focuser is connected to the PI (it is the only device connected to a USB port...no hubs or any other device), a "Scan Ports" reveals 1 available port...which I assume to be /dev/tty0... but when I try to connect, the system reports port already in use by another device. When I issue lsusb at the terminal, the focuser is located at Bus 001 Device 003, but no indication of which /dev that is for setting the connection port.

As for the firmware level, I asked Primaluce support about the Play software upgrading the firmware from 3.1 to 3.05, and their response was:
"I confirm you that the latest firmware of SESTO SENSO 2/ESATTO focusers is version 3.05.01 that is later than 3.1.2 (that you can read as 3.01.02)."

Read More...