trendLog Object

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trendLog Object

According to the BACnet protocol documentation:

Monitors a property of a referenced object and, when predefined conditions are met, saves ("logs") the value of the property and a timestamp in an internal log buffer for subsequent retrieval. The data may be logged periodically, upon a change of value or when "triggered" by a write to the Trigger property. The Trigger property allows the acquisition of samples to be controlled by network write operations or internal processes. Errors that prevent the acquisition of the data, as well as changes in the status or operation of the logging process itself, are also recorded. Each timestamped buffer entry is called a "log record."

Objects of type trendLog have the following properties:

ackedTransitions

alignIntervals

bufferSize

clientCovIncrement

covResubscriptionInterval

description

enable

eventAlgorithmInhibit

eventAlgorithmInhibitRef

eventDetectionEnable

eventEnable

eventMessageTexts

eventMessageTextsConfig

eventState

eventTimeStamps

intervalOffset

lastNotifyRecord

logBuffer

logDeviceObjectProperty

logInterval

loggingType

notificationClass

notificationThreshold

notifyType

objectIdentifier

objectName

objectType

profileLocation

profileName

propertyList

recordCount

recordsSinceNotification

reliability

reliabilityEvaluationInhibit

startTime

statusFlags

stopTime

stopWhenFull

tags

totalRecordCount

trigger

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