a kind of object?
Data and event connections can be considered objects insofar as IEC 61499 defines a textual syntax for their declaration and a management service for their creation, query and deletion. However, the only attributes that IEC 61499 defines for a connection are its source and destination. Software tools may require additional attributes, such as scheduling priority for event connections, communication timeliness constraints for both data and event connections in order to determine whether a proposed system configuration is feasible. Software tools should also check the types of data and event inputs and outputs for consistency. Annex J of IEC 61499-1 will define syntax and semantics for the declaration of additional attributes.
