Looking at buying Fanuc Robodrill a-T-10b with fanuc 16-m controller from 1995. Any knowledge on this would be appreciated but I am mostly concerned about the amount of control memory it might have and the ability to load or dnc cam programs to the machine. The machine itself is very good condition with little use.

It also comes with a Haas indexer and its own control box. So it seems independent of the machine I am just wondering how these work. Are they automatic or does there need to be an operator there to press a button at certain times during a program? Is there any value to these types of 4th axis or are they outdated?