IEC_BACNET_SELECTION_CRITERION (STRUCT)

TYPE IEC_BACNET_SELECTION_CRITERION : STRUCT

This structure represents the Selection-Criteria data parameters for an read property conditional service request.

InOut:

Name

Type

Comment

ePropertyID

IEC_BACNET_PROPERTY_ID

The property identifier specifies the property to be accessed.

eRelationSpecifier

IEC_BACNET_RELATION_TYPE

Specifies the relation for comparing property value and comarison value.

nIndex

IEC_BACNET_ARRAY_INDEX

The index specifies if a single element or the whole array is accessed.

comparisonValue

IEC_BACNET_PROPERTY_CONTENTS

This parameter shall be a constant of the same datatype as the property being compared. If the Comparison Value is being used to select properties of type CharacterString, then the “wildcard” characters “?” and “*” may be used but only for the == operators.