Objects and properties

Adding and removing objects, and choosing which properties they have.

Most object types are created with BACnetStack_AddObject(); several types have their own add function, which is required for them. A property must be enabled before it can be read, and must be made writable before a client can write it. Required properties are enabled when the object is added; BACnetStack_SetPropertyEnabled() is mainly for optional ones. A property that becomes writable when its object is out of service, such as Present_Value of an input or value object, accepts a write while Out_Of_Service is true without being made writable. The values of most properties are served by your callbacks (Property value callbacks); call BACnetStack_UpdateValue() when a value you serve changes, so COV, trending and alarms see it. See Serving property values.

Functions

Function	Summary
`BACnetStack_AddObject()`	Adds a BACnet object to an existing device.
`BACnetStack_AddNetworkPortObject()`	Adds a BACnet Network Port Object.
`BACnetStack_ActivateNetworkPortPendingChanges()`	Activates the pending changes of one Network Port object, or of every Network Port object of a device.
`BACnetStack_AddTrendLogObject()`	Adds a BACnet Trend Log Object.
`BACnetStack_AddTrendLogMultipleObject()`	Adds a BACnet Trend Log Multiple Object.
`BACnetStack_AddElevatorGroupObject()`	Adds an Elevator Group Object.
`BACnetStack_AddLiftOrEscalatorObject()`	Adds a Lift or Escalator Object.
`BACnetStack_AddFileObject()`	Adds a File Object.
`BACnetStack_SetPropertyEnabled()`	Enables a device or object property.
`BACnetStack_SetPropertyByObjectTypeEnabled()`	Per-object-TYPE variant of BACnetStack_SetPropertyEnabled().
`BACnetStack_SetProprietaryProperty()`	Sets the data type that is used in the callback for a object property.
`BACnetStack_SetPropertyWritable()`	Makes a device’s or object’s property writable.
`BACnetStack_SetPropertyByObjectTypeWritable()`	Per-object-TYPE variant of BACnetStack_SetPropertyWritable().
`BACnetStack_SetPropertySubscribable()`	Makes a device’s or object’s property subscribable.
`BACnetStack_SetPropertyByObjectTypeSubscribable()`	Per-object-TYPE variant of BACnetStack_SetPropertySubscribable().
`BACnetStack_SetObjectTypeCreatable()`	Allows objects of the specified object type to be created using the BACnet Create Object service.
`BACnetStack_RemoveObject()`	Removes an object from a device.
`BACnetStack_ObjectExists()`	Checks whether an object exists on the device or not.
`BACnetStack_AddEventLogObject()`	Adds a BACnet Event Log Object.
`BACnetStack_UpdateValue()`	Tells the stack that a value you serve has changed, so COV, trend logging and alarms see it.