Theben TC 649 C Manual page 14

Note: Only use an IP address that is not being used by another device in
the network and that corresponds to your network.
14. Click on "Save" and wait until the settings have been saved.
15. Remove the network cable from the service interface of the TC 649 C.
16. Now connect your PC to your home network again via WiFi or LAN.
17. Open the web browser (Google Chrome).
18. In the address field in the browser, enter the IP address that you assigned in
point 15 in the following format: http://IPaddress.
19. The login screen will appear.
Your TC 649 C is connected to your network. The start-up process is now
complete.

If you still cannot access the TC 649 C device, check the proxy settings and
contact the system administrator if necessary.
TC 649 C manual
Connecting TC 649 C to the network
14