Kuka 2.x manuals

Well, if you have two different stations to work on (for example, a Pickup station and a Dropoff station), you would probably want to use a separate Base for each. That way, if one moves and the other doesn't, you don't have all their points tied together.

more generally, you would want anything that can be used as a reference to be a base (separate one).
for example if I have to pick something from one rack and place into another, that is two bases.
but if I am placing it on a tooling that is on a turntable position, I would consider making separate base for every index position.

for example turn table could have multiple index positions (here is one with only 4 positions):
http://www.turnkeytechnologies.net/media/products…ith_tooling.jpg

if nesting/tooling at all positions are same and contain bunch of points to be taught, I would make base for each index position (in this case 4 bases).
although after indexing is complete, each nest is supposed to arrive to a same place, chances are they are not machined and installed exactly the same. And first time maintenance guy removes one or more of them from the turntable, there is no guarantee that they will be back in same place exactly as they ware before.
rather than teaching 20 points on each nest, (total 80 points), one can teach 4 bases and 20 points on one nest. then even if one of the nest is moved out of position, we just re-measure base for that nest and everything will be fine.