EVT_BACNET_CONFCOVNOTIFICATION (STRUCT)

TYPE EVT_BACNET_CONFCOVNOTIFICATION : STRUCT

Receives confirmed Change Of Value requests

This is the type declaration for the Confirmed COV Notification service application hook. This hook allows a BACnet application to process Confirmed COV service since there are no default processing of this service in the present API version. This hook is given all of the parameters of a service request, and is responsible for all error checking ( Device/Object existence, address correctness and so forth). A pointer to the routine is registered with the Client by BACnetSetHook API routine. A hook can be registered by the registering API routine at any time. One hook procedure is registered per service. If a hook is registered more than once for the same service, the new hook procedure replaces the old one. A 0 procedure pointer can be used to deregister the hook. A Confirmed COV Notification hook must complete its service request processing by using one of the transaction completion API routines: BACnetSrvcResponseCbCompletion, BACnetSrvcAbortCbCompletion, BACnetSrvcErrorCbCompletion or BACnetSrvcRejectCbCompletion.*)

InOut:

Name	Type	Comment
pCBStatus	POINTER TO IEC_BACNET_CB_STATUS	CB-Status returned for the event. “Default” processes the standard APIs reaction, which needs no additional Callback-Signalling.
phTransaction	POINTER TO BYTE	This is the Transaction State Machine (TSM) handle for the current service request. It is generated by the BACnet API and is the first parameter given to the Hook- Completion functions.
sourceAddress	POINTER TO IEC_BACNET_ADDRESS	This is the MAC address of the BACnet addressed device from which the request has been sent.
destinationAddress	POINTER TO IEC_BACNET_ADDRESS	This is the MAC address of the device constructed by the application which has received the request.
pServiceInfo	POINTER TO IEC_BACNET_COV_NOTIF_INFO	A pointer to the service information data structure. This data structure is of data type IEC_BACNET_COV_NOTIF_INFO.