Modern buildings contain numerous systems that benefit from integration. A BMS can serve as the central platform connecting HVAC, lighting, access control, fire systems, and more.
Communication Protocols
BACnet has become the predominant protocol for building automation integration. Its object-oriented structure and multiple transport options suit diverse applications. Modbus remains common for simpler devices and utility metering. KNX dominates European lighting and blind control. LonWorks, whilst less common in new installations, persists in existing buildings.
Integration Approaches
Native protocol support provides the cleanest integration when systems share a common language. Protocol gateways translate between dissimilar systems, adding cost but enabling connection. API-based integration suits modern cloud-connected systems and IT infrastructure.
Practical Considerations
Successful integration requires clear documentation of points, naming conventions, and data formats. Define which system "owns" each data point to prevent conflicts. Consider network architecture carefully - keeping building systems isolated from corporate IT networks addresses security concerns.
Common Integration Scenarios
Lighting control integration enables coordinated scheduling and occupancy response. Access control data can inform HVAC operation based on actual presence. Fire system integration ensures appropriate smoke control and plant shutdown sequences. Metering integration supports energy management and tenant billing.
Planning for Success
Integration works best when considered from project inception. Retrospective integration between separately-specified systems often proves difficult and expensive. Specify integration requirements clearly, including points lists, update rates, and testing procedures.