ProSoft Technology 5201-DFNT-DNPS - Manual (Page 56)

ProLinx DNPS ♦ ProLinx Gateway Reference
DNP 3.0 Slave User Manual
Page 56 of 86
ProSoft Technology, Inc.
December 1, 2009
Data Requirements
This phase of design defines what data elements are to be interfaced between
the other ProLinx protocol and the DNP master. The module provides the
following data types:
ƒ Digital Input
ƒ Digital Output
ƒ Counter
ƒ Floating
Point
ƒ Analog Input
ƒ Analog
Output
All communications between the DNP master and the other protocol is through
these data types. Therefore, all data to be used by the system must be contained
and configured in one of these data types.
The following illustration shows the databases maintained by the module for the
DNP data.
DATA AREA
DNP DATA BINARY INPUTS
ANALOG INPUTS
COUNTER DATA
BINARY OUTPUTS
ANALOG OUTPUTS
FROZEN COUNTER DATA
BINARY INPUT EVENTS
ANALOG INPUT EVENTS
The module is responsible for maintaining the databases using data acquired
from the other protocol and DNP master attached network port.
The following illustration shows the interaction of the binary and analog input
points with the databases.
All data for these data types is derived from the processor and is passed to the
module over the backplane. The module will constantly monitor for changes in
this data and generate event messages when point values change. For binary
input points, events will be generated on any state change. For analog input
points, events will be generated for points that have a current value outside of the
user-set deadband based on the last value used for an event.