Here is the basic wiring diagram that supports the DCC track power and the occupancy detection using the BDL168 (you can click the image to see a larger version).

This design uses one DCS100 command station/booster and one DB150 booster to divide the layout into two power districts.

In addition, each power district is divided into two sub-districts by using a pair of PXS2 circuit breakers. This gives us four (4) power isolated, circuit protected areas so a short in any one will not shut down the other three.

The BDL 168 provides 16 detection sections that form the base for the train automation. RR&Co Train Controller uses the occupancy information to control the routes of the automated trains as well as any manually operated trains on the layout. Multiple BDL168s can be implemented to expand the number of sections to 32, 48, 64, etc.

As you will see in the diagram, the "B" rail is gapped between power sub-districts and the "A" rail is gapped between occupancy sections (blocks). The black wires represent the "B" side of the power bus and the red wires represent the "A" side.

And lastly, not all track is part of an occupancy section. Track sections with turnouts, crossovers, etc are not generally part of the occupancy system. They are connected directly to the track bus and not the BDL168.

I will post other diagrams showing the turnout control system as well as the signaling system.