What is the purpose of a setpoint map in a BAS database?

• A. To store historical setpoint values for auditing.
• B. To automatically generate new setpoints every hour.
• C. To translate user-set values into controller-friendly numbers and units for correct control actions.
• D. To log setpoints for performance visuals.

Answer: (C)

Translating human-set values into controller-friendly numbers and units is what a setpoint map does. When operators enter a setpoint—like 72 degrees Fahrenheit—the control system may operate in different units or on a scaled signal. The setpoint map converts that value into the exact numeric input the controller expects, handling unit conversion, scaling to the controller’s input range, and any limits or deadbands. This guarantees the HVAC equipment responds correctly to the intended temperature or condition. It also ensures consistent behavior across different devices or zones by applying the appropriate mappings. It’s not about storing history, automatically generating new setpoints, or logging visuals—those are separate functions.