According to the BACnet protocol documentation:

Defines a standardized object whose properties represent the externally visible characteristics of a named data value in a BACnet device. A BACnet device can use a Positive Integer Value object to make any kind of unsigned data value accessible to other BACnet devices. The mechanisms by which the value is derived are not visible to the BACnet client.

Objects of type positiveIntegerValue have the following properties:

•ackedTransitions

•commandTimeArray

•covIncrement

•currentCommandPriority

•deadband

•description

•eventAlgorithmInhibit

•eventAlgorithmInhibitRef

•eventDetectionEnable

•eventEnable

•eventMessageTexts

•eventMessageTextsConfig

•eventState

•eventTimeStamps

•faultHighLimit

•faultLowLimit

•highLimit

•lastCommandTime

•limitEnable

•lowLimit

•maxPresValue

•minPresValue

•notificationClass

•notifyType

•objectIdentifier

•objectName

•objectType

•outOfService

•presentValue

•priorityArray

•profileLocation

•profileName

•propertyList

•reliability

•reliabilityEvaluationInhibit

•relinquishDefault

•resolution

•statusFlags

•tags

•timeDelay

•timeDelayNormal

•units

•valueSource

•valueSourceArray