That is about as good a reference as you can get. Good find.
That manual will tell you everything thing you need to know about how many dimmers can be on a bus and what type of topology to the features of the processor.
One thing to note is that a 4 Series can not use RPM's, but can use WPM's.
If I were doing a new system in a new construction, I would use an 8 Series Processor (about an $1800 upgrade from a 4) and use RPM's solely for outdoor lighting and bath fans or other large wattage load. Everything else would be Maestro dimmers. I would have a keypad at every entrance and one in the MBR and at the top of the basement stairs.
One nice thing about upgrading to HW from RadioRA is that the dimmers can be controllers. For example there is a Maestro dimmer at the entrance of the MBR which controls the can lights. But if you are leaving the room, turn off the cans also turns off all lights in the MBR. So it turns on the cans, but can turn off all the lights so all you have to do is hit one switch as you walk out.
And all the closets (and my daughter's room) turn off after 20 minutes (1 hour in the case of my daughter's room) so lights don't get left on. A double tap removes the timer feature.
That manual will tell you everything thing you need to know about how many dimmers can be on a bus and what type of topology to the features of the processor.
One thing to note is that a 4 Series can not use RPM's, but can use WPM's.
If I were doing a new system in a new construction, I would use an 8 Series Processor (about an $1800 upgrade from a 4) and use RPM's solely for outdoor lighting and bath fans or other large wattage load. Everything else would be Maestro dimmers. I would have a keypad at every entrance and one in the MBR and at the top of the basement stairs.
One nice thing about upgrading to HW from RadioRA is that the dimmers can be controllers. For example there is a Maestro dimmer at the entrance of the MBR which controls the can lights. But if you are leaving the room, turn off the cans also turns off all lights in the MBR. So it turns on the cans, but can turn off all the lights so all you have to do is hit one switch as you walk out.
And all the closets (and my daughter's room) turn off after 20 minutes (1 hour in the case of my daughter's room) so lights don't get left on. A double tap removes the timer feature.