BACnetUnconfCOVNotification (FUN)ΒΆ

FUNCTION BACnetUnconfCOVNotification : IEC_BACNET_STATUS

Sends an UnconfirmedCOVNotification request.

Sends a BACnet Unconfirmed COV Notification service request message to the COV-client and to a process in it that is indicated by a process Identifier. This request is used to notify subscribers about changes that occurred in the properties of a particular object. A zero value of the process identifier means broadcast. This routine may control APDU Properties like APDU length and segmentation during its execution.

InOut:

Scope

Name

Type

Comment

Return

BACnetUnconfCOVNotification

IEC_BACNET_STATUS

A status indicating if the operation worked.

Input

pSourceAddress

POINTER TO IEC_BACNET_ADDRESS

If the BACnet application has only one device constructed and installed, this can be 0. In this case the MAC address of this device will be used. Otherwise this shall be the MAC address returned on device object construction.

pDestinationAddress

POINTER TO IEC_BACNET_ADDRESS

This is the MAC address of the device to which the request should be sent.

pCOVInfo

POINTER TO IEC_BACNET_COV_NOTIF_INFO

A pointer to the service information data structure.

pAPDUParams

POINTER TO IEC_BACNET_APDU_PROPERTIES

A pointer to the APDU-Properties structure which sets APDU properties for this transaction only. This does not change global defaults or settings for the application APDU Properties. This argument may be 0. In this case APDU properties are used which were specified in the device object properties of the applications device which sends the request.