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_UINT	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_UINT	The maximum number of octets supported 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_UINT	Indicate the maximum number of segments of an APDU that an device will accept.
`nWindowSize`	IEC_BACNET_UINT	Is the proposed size of a segmented message.
`nSegmentTimeout`	IEC_BACNET_UINT	Defines the time in milliseconds which has to expire between retransmission of an APDU segment requiring segment acknowledgment.
`nTimeout`	IEC_BACNET_UINT	Defines the time in milliseconds which has to expire between retransmissions of an APDU requiring acknowledgment but no acknowledgment has been received yet.
`nRetryCount`	IEC_BACNET_UINT	Defines the maximum number retransmissions that an APDU may reach before it will be terminated with an error state.
`nMaxSegmentsToSend`	IEC_BACNET_UINT	Defines the maximum number of segments of an APDU that this device will send.
`nRouteResolutionTimeout`	IEC_BACNET_UINT	Defines 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_UINT	Defines 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.