The Out-Of-Range extension detects whether a numeric object property value exceeds a range defined by a high-limit and a low-limit.
Supported BACnet object types capable of using Out-Of-Range extension:
- Analog_Input
- Analog_Output
- Analog_Value
- Pulse_Converter
Using the BACnet CreateObject service to create an EEO with event-type Out-Of-Range and an object-property-reference that does not reference one of the object types listed will be rejected with error-class Object and error-code Unsupported-Object-Type.
Property Name | Description |
|---|---|
Out-Of-Range-High-Limit | A writable proprietary property that specifies the high limit of the normal range. |
Out-Of-Range-Low-Limit | A writable proprietary property that specifies the low limit of the normal range. |
Deadband | A writable proprietary property that specifies the deadband that is applied to the respective limit before a (alarm) return to Normal event state is indicated. |
Time-Delay | A writable proprietary property that specifies a deadband time, in seconds, that must pass between the time an object first detects an offnormal condition and a to-offnormal event state transition occurs. |
If the Object-Name-Reference is not successfully resolved, object-property-reference shall be set to default, reliability shall be set to configuration-error, and the EEO will not detect event states or issue event notifications.