Purpose:

For each control device type, you may have an arbitrary number of control models comprising your railroad configuration. .

Screen Images:

This table shows some of the control models used on my railroad. Notice that I use multiple Turnout Controllers and Turnout Machines, for example

The Team Digital SMD 8 control device model is highlighted. The lower pane shows the 8 ports in a Team Digital SMD8, the number of pins per port, and the ports are used .