run
ipconfig
from a DOS prompt
that will show the router and PC's IP address
e.g
192.168.2.1
and
192.168.2.2
then the Data logger will be allocated the next one by your router (or the next one again if there is another IP device connected (or it could be that the IP logger gets allocated before that other IP device)
i.e
192.168.2.3
note that if you change the router, then you will need to power down the console to get it to reset the DHCP IP address of the data logger
then repeat the above