Hi prycek,
To determine the IP address of your SELPHY CP1200, please follow these steps:
1. Press the MENU button on your SELPHY CP1200.
2. Press the up or down button to select [Wi-Fi Settings] and press the OK button.
3. Press the up or down button to select [Confirm Settings], then press the OK button.
4. Press the down button to view the wireless settings.