Controlled by / controls
The Controlled by / controls relationship labels the relation between multiple pieces of equipment and a control system that communicates with the piece of equipment.
Edge gateway for / Edge gateway
The Edge gateway for / Edge gateway labels the relation between an Edge gateway (device behind gateway) and one or multiple control systems.
Part of / Parts
The Part of / Parts relationship labels the relation between a piece and equipment like a heating system or air handling unit and the pieces of equipment that are a part of the system or unit.
Supplied by / Supplies
The Supplied by / Supplies relationship labels the relation between a piece and equipment like a heating system or air handling unit and the pieces of equipment that supply the system or unit.