The analog totalization extension is available for all analog object types. Analog totalization is useful for calculating:

  • The volume total from a flow rate sensor over a specified time period
  • Kilowatt hours from an energy meter over a specified time period
  • Degree days, etc.

ANALOG-ACCUMULATED-TOTALIZED-VALUE

BACnet Property

Short name

BACnet Description

Notes

Totalized-Value

TotlizdVal

Totalized value

A writeable property that represents the accumulated value of the analog value over time since the date and time indicated by the Time-Of-Totalized-Value-Reset property.

Totalized-Value will not update if Enable-Aggregation is False or the Fault status-flag is set. Writing to this property causes:

Time-Of-Totalized-Value-Reset property to be set to the current date and time.

Totalized-Previous-Reset-Value to be set to the value written. Typically, the value will be zero.

Time-of-Totalized-Value-Reset

TiTotValRst

Time of totalized value reset

A read-only property that indicates the date and time when the accumulation of the analog value over time, indicated by the Totalized-Value property, was started.

Totalized_Previous_Reset_Value

TotPrvRtVal

Totalized previous reset value

A read-only property that indicates the value written to Totalized-Value when it was last reset.

Totalization-Rate

TotliznRate

Totalization rate

Sets the duration of the aggregation period.