The messages from machines (in OpConXML format or in other formats) are populated in internal C# objects within DirectDataLink, then parsed in JSON format and sent to RabbitMQ.
Further information about the OpConXML standard can be found in the associated documentation.
EventId, Name, HeaderVariables These elements contain the information about the message itself. The elements include all information that is necessary for the clear identification of the message.
Application, Location, ProcessNo These elements describe all event-specific information.
BodyVariables These elements describe user-defined variables.