According to the BACnet protocol documentation:

Defines a standardized object used to describe a periodic schedule that may recur during a range of dates, with optional exceptions at arbitrary times on arbitrary dates. The Schedule object also serves as a binding between these scheduled times and the writing of specified "values" to specific properties of specific objects at those times. Schedules are divided into days, of which there are two types: normal days within a week and exception days. Both types of days can specify scheduling events for either the full day or portions of a day, and a priority mechanism defines which scheduled event is in control at any given time.

Objects of type schedule have the following properties:

•ackedTransitions

•description

•effectivePeriod

•eventDetectionEnable

•eventEnable

•eventMessageTexts

•eventMessageTextsConfig

•eventState

•eventTimeStamps

•exceptionSchedule

•listOfObjectPropertyReferences

•notificationClass

•notifyType

•objectIdentifier

•objectName

•objectType

•outOfService

•presentValue

•priorityForWriting

•profileLocation

•profileName

•propertyList

•reliability

•reliabilityEvaluationInhibit

•scheduleDefault

•statusFlags

•tags

•weeklySchedule