IEC_BACNET_APDU_PROPERTIES (STRUCT)

TYPE IEC_BACNET_APDU_PROPERTIES : STRUCT

Structure which holds the main APDU communikation parameters for communication, interacting and exchange of values between BACnet network devices.

InOut:

Name	Type	Comment
mask	IEC_BACNET_UNSIGNED	Mask of flags which define which member of this struct is valid. Possible flags are: APDU_MAX_LENGTH_FLAG, APDU_SEGMENTATION_FLAG, APDU_MAX_SEGMENTS_FLAG, APDU_WINDOW_SIZE_FLAG, APDU_SEGMENT_TIMEOUT_FLAG, APDU_TIMEOUT_FLAG, APDU_NUM_RETRIES_FLAG, APDU_MAX_SEGMENTS_TO_SEND_FLAG, APDU_ROUTE_RESOLVE_TIME_FLAG and APDU_MAX_ROUTE_RETRIES_FLAG
nMaxLength	IEC_BACNET_UNSIGNED	The maximum number of octets that may be contained in a single, indivisible application layer protocol data unit. The value of this property shall be greater than or equal to 50. The maximum value of this parameter is constrained by the underlying data link technology.
eSegmentation	IEC_BACNET_SEGMENTATION	Defines which kind of segmentation may be used in an BACnet request or response.
nMaxSegments	IEC_BACNET_UNSIGNED	Indicate the maximum number of segments of an APDU that an device will accept.
nWindowSize	IEC_BACNET_UNSIGNED	Is the proposed size of a segmented message. The actual size window size is determine as the minimum of the proposed window size of both communicated device.
nSegmentTimeout	IEC_BACNET_UNSIGNED	Indicates the amount of time in milliseconds between retransmission of an APDU segment.
nTimeout	IEC_BACNET_UNSIGNED	Indicates the amount of time in milliseconds between retransmissions of an APDU requiring acknowledgment for which no acknowledgment has been received.
nRetryCount	IEC_BACNET_UNSIGNED	Indicates the maximum number of times that an APDU shall be retransmitted before it will be terminated with an error state.
nMaxSegmentsToSend	IEC_BACNET_UNSIGNED	Indicates the maximum number of segments of an APDU that this device will send. If it is set to 0, then it is considered to be the same as Max-Segments-Accepted.
nRouteResolutionTimeout	IEC_BACNET_UNSIGNED	Indicates the amount of time in milliseconds between retries to establish an routing path for the APDU frames to be sent. This timeout will be added to the normal APDU timeout specified in nTimeout if the network layer needs to find a routing path. A value of 0 indicates that the normal APDU timeout specified in nTimeout will be used.
nRouteResolutionRetries	IEC_BACNET_UNSIGNED	Indicates the maximum number of retries to ask for an specified router if routing path is unknow. This value will be added to the normal number of APDU retries specified in nRetryCount if the network layer needs to find a routing path. A value of 0 indicates that the normal APDU retries specified in nRetryCount will be used.