ProSoft Technology MVI71-DNP - Manual (Page 97)

Reference MVI71-DNP ♦ PLC Platform
DNP 3.0 Master/Slave Communication Module
ProSoft Technology, Inc. Page 97 of 172
August 23, 2007
The following illustration shows the interaction of the binary and analog input
points with the databases.
The DNP database consists of data from the PLC and the IED units. The IED
database contains only data acquired from IED units. This data can be used in
the PLC's ladder logic, and is the only path to get IED data into the PLC. The
RBE flags and last value database are used for event generation. Events
received from the IED unit can be placed directly in the event buffer. This
requires that the RBE flag for the data points be set to a value of 1. For all points
in the RBE flags database with a value of zero, the module will generate the
events.