This is an example of what is possible with the DA70 when Group 4 is activated. Looking at the diagram below we can see that the short piece of conveyor has 5 motors, 5 photo eyes, and 5 popup stops.
This entire system can be completely controlled with a control panel with the DA70 Group 4, DA70 IO Modules, along with some basic motor overloads and what not. This cabinet is a rough example.