Have you set the Parameter Write= 1 on the Setting page? This allows you to write parameters.
You don't "find" the address for the CNC, you assign it. You can configure up to 3 connections (if you have programs stored on 3 programmer's pc's for example), but usually you set it up for only one.
You won't be able to see the Fanuc from your PC, but you will be able to get a directory of the programs stored in the specified folder on your PC. All program transfers (READ, PUNCH) are initiated from the CNC, and drip feed is not possible through embedded ethernet.