Just to clarify: the OP's machine is an R1150GS, right? With power brakes/ABS?
If so, in case it's not clear from Multiplicity
's post: there are two separate circuits involved. Master-to-ABS is independent from ABS-to-caliper.
You bleed each section separately. Brake reservoir for the caliper circuit is inside ABS module. That section is really easy to bleed, by the way, since the power pump does all the work.
Here is the pictorial on how to bleed brakes
on an R1150:
It may seem intimidating, but it really is a simple procedure.
Good luck! Robert.