Each logical node contains DATA, which are standard and related to logical node functions. It involve basic data objects, status, control, and measurement. Each data element consists of a number of data attributes with a DATA Type
Data sets is a group or set of data which is used to read or write several data objects and data attributes at once using a single request/response message exchange.
They have a reference of the format LDName/LNName.DataSetName.
Persistent data sets.
Non-Persistent data sets.
Reporting allows a server to send data based on events and without explicit request by the client.
What data is sent and the events that cause reports are configured through so called report control blocks (RCB).
![](https://i.ytimg.com/vi/QElWlSPVPwA/mqdefault.jpg)