Yes it possible. You can do it from the Pittouch Pro 2 main unit.
1. Press and hold the power button on the left of the main body of Pittouch Pro 2 for 2 seconds or more
2. On the function selection screen, select [Terminal setting]> [Network setting]> [Password input] 0000 (4 zeros)> Network setting.
*The above password is set at the time of delivery. If it has been changed, enter the changed password.
・LAN port setting (wired LAN)
・Communication module setting *No need to set if external communication module is not used
・Wireless LAN module setting
-NTP server settings
Please confirm the setting contents with the person in charge of your network before operating.