bms definition is an Intelligent Micro-processor based system which centralizes and simplifies: Controlling, Monitoring, Operating, and Managing Of Heating, Ventilation , Air-Conditioning (HVAC), Lighting , Hydraulics Systems & Other Buildings services systems.

More specifically they link the functionality of individual pieces of building equipment so that they operate as one complete integrated system.
Now installed in every major building or facility with the availability of direct integration into all other building services such as security, access control, CCTV, fire, Lifts and other life and safety systems.
Current generation BMS systems are now based on open communications protocols and are WEB enabled allowing integration of systems from multiple system vendors and access from anywhere in the world.
Building Management Systems (BMS) also known as Building Automation Systems (BAS), Building Management and Control System (BMCS), Direct Digital Controls (DDC) and Building Controls
Other terms associated with Control Systems include:
- Supervisory, Control and Data Acquisition (SCADA)
- Programmable Logic Controllers (PLC)
- Energy Management System (EMS)
- Data gathering panels (DGP)
- Modbus, Lonworks, and Bacnet – All refer to communications protocols
- ‘Front End’ – legacy term used to refer to the BMS Operator Workstation
Most Common Current industry term of bms definition –
– Building Management System (BMS) or
– Building Management and Control Systems (BMCS)
BMS Suppliers and Integrators :
- Procured as a complete system that includes, engineering, supply, installation, programming and commissioning.
- Specialist Integrators that are either directly associated with the manufacturer or are approved re-sellers.
- All Integrators should have full factory technical support
- Need to work closely with Mechanical Services, Mechanical Electrical and other contractors.
- For new construction BMS is usually included within the mechanical services package.