A smart communications controller for building equipment includes an equipment port connected to the building equipment and a plurality of autoconfiguration objects. Each of the autoconfiguration objects is configured to perform a protocol testing process for a particular communications protocol. The protocol testing process includes automatically determining whether the communications protocol is used by the building equipment connected to the equipment port. The smart communications controller further includes an autoconfiguration manager configured to cause the autoconfiguration objects to iteratively perform their protocol testing processes until the communications protocol used by the building equipment is identified. The smart communications controller further includes an equipment controller configured to use the identified communications protocol for the building equipment to generate protocol-specific control signals for the building equipment.