Analog Input (AI) points provide variable-type information to the automation station. Examples of AI points include:
- Temperature sensors
- Relative humidity sensors
BACnet Property | Short Name | BACnet Description | Notes |
|---|---|---|---|
object-type | ObjTyp | Object type | Value: 0 (analog-input) |
profile-name | PrfNam | Profile name | Value: 7-001-SBCv15.03 |
Prototype | BAObjTyp | Building automation profile | Value: 1 (AnalogInput) |
present-value | PrVal | Present value | A standard BACnet property that indicates the current value, in engineering units, of the input being measured. The present-value property shall be writable when out_of_service is TRUE. |
Tracking_Value | TckVal | Tracking value | A read-only proprietary property that indicates the measured value regardless of whether the input is decoupled by means of out-of-service. |
units | Un | Units | A writable standard BACnet enumerated property that indicates the measurement units of this object. |
resolution | Rsl | Resolution | A writable standard BACnet property that indicates the smallest recognizable change in present-value in engineering units. |
max-pres-value | PrValMax | Present maximum value | A writable standard BACnet property that indicates the highest number in engineering units that can be reliably obtained for the present-value property of this object. |
min-pres-value | PrValMin | Present minimum value | A writable standard BACnet property that indicates the lowest number in engineering units that can be reliably obtained for the present-value property of this object. |
Correction_Offset | CorrOfs | Correction offset | A writable proprietary property that specifies an offset used to correct a potential difference between the real Physical Variable and the measured value. |
Correction_Factor | CorrFac | Correction factor | A writable proprietary property that specifies a multiplication factor used to correct a potential difference between the real Physical Variable and the measured value. |
cov-increment | Cov | Change of value, COV | A writable standard BACnet property that specifies the minimum change in present-value that will cause a COV Notification to be issued to subscriber COV-clients. |
Alarm-Extension | AlarmExtn | Event configuration | A writable enumerated proprietary property that specifies whether the optional intrinsic alarming extension is enabled for the object. |
Aggregation-Extension | AggtnExtn | Aggregation: Operating hours & others | A writable enumerated proprietary enumerated property that allows an optional aggregation extension to be enabled for the object. |