IEC_BACNET_PROPERTY_DESCRIPTION (STRUCT)¶

TYPE IEC_BACNET_PROPERTY_DESCRIPTION : STRUCT

Describes everything about an property that the BACnet API knows about.

ATTENTION: The information about the property in this structure is object specific because several object have the same property identifier but they have different data types for it (e.g. the present-value property).

InOut:

Name	Type	Comment
propID	IEC_BACNET_PROPERTY_ID	BACnet property ID of this properties information
structFlags	IEC_BACNET_UINT	The different flags for the information about property. Following flags might be set: ::PROP_IS_ARRAY_FLAG, ::PROP_IS_LIST_FLAG, ::PROP_IS_CONSTRUCTED_FLAG, ::PROP_IS_OPTIONAL_FLAG, ::PROP_IS_REQUIRED_READABLE_FLAG, ::PROP_IS_REQUIRED_WRITEABLE_FLAG, ::PROP_IS_REQUIRED_INTRINSIC_FLAG, ::PROP_IS_PROPERTY_HIDDEN_FLAG, ::PROP_IS_REQUIRED_INTRINSIC_R13_FLAG, ::PROP_IS_REQUIRED_COV_FLAG, ::PROP_IS_REQUIRED_COMMANDABLE_FLAG, ::PROP_IS_WRITABLE_ON_OOS_TRUE_FLAG, ::PROP_IS_NO_COVP_PROPERTY_FLAG, ::PROP_HAS_CONST_ARRAY_SIZE_FLAG, ::PROP_HAS_VARIABLE_SIZE_FLAG, ::PROP_HAS_NO_RP_AND_RPM_ACCESS_FLAG
size	IEC_BACNET_UINT	The initially reserved size for this property If the property is no array it’s BACnet size of property. If the property is an array it’s size of ONE item in the array. If the property is an list it’s size of whole list.
itemNumber	IEC_BACNET_UINT	The initially reserved size for this property if it is an array If the property is an const array it’s number of array elements. If the property is no array it’s number contents (eg. number of bits).
dataType	IEC_BACNET_DATA_TYPE	The API used BACnet datatype of this property
valueDescription	POINTER TO IEC_BACNET_BYTE	Pointer to a hidden description (for internal use only)
ddxFunction	IEC_BACNET_DDX_DDV_SIZE	Pointer to a hidden decoding function (for internal use only)
eexFunction	IEC_BACNET_DDX_DDV_SIZE	Pointer to a hidden encoding function (for internal use only)
sizeFunction	IEC_BACNET_DDX_DDV_SIZE	Pointer to a hidden size calculating function (for internal use only)
alignedSize	IEC_BACNET_UINT	The initially reserved aligned size for this property