Data Attribute

A data attribute is a child element of a common data class (CDC). Most of the data attributes are basic type such a a BOOLEAN of a INT32 and others. All basic data attributes type are defined within the scope of the IEC 61850 some are common to other definitions as well as the BOOLEAN some are unique to IEC 61850 as the Quality bit string.

Some data attributes are structure variables. In structure - not complexity - similiar to the common data class or the logical node. One such data attribute is the Vector, which is defined with two child element mag and ang. Another exaple is the type AnalogueValue that is defined to have either a FLOAT32 child f of a INT32 child i.