Rockwell Automation 1758-RTU202 DataSite Software User Manual FRN 1.2 - Manual (Page 251)

Publication 1758-UM002D-EN-P - October 2010
DataSite DNP3 Configuration Utility (DS DNP3) 251
The following table provides a description of the options for these
attributes.
5. To add a data point into a session, select the check box for the session in
the corresponding row.
For example, if you want to add data point 2 into session 03, select the
check box as shown.
To remove a data point from a session, clear the check box for the
session in the corresponding row.
Options for Signal Type, Data Type, Storage Type and Event Type
Attribute Option
Signal Type AI, AO, DI, DO, PI, and String.
Only AO and DO have a local flag. Set the flag when some or
all of the outstation's digital output points are in the Local
state. This means that the Outstation's control outputs are not
accessible through the DNP protocol. Clear the flag when the
Outstation is in the Remote state. This means that the
Outstation's control outputs are accessible through the DNP
protocol.
A String object has four data types, for example, String(20),
String(60), String(100), and String(250). You can write values to
and read values from string object points.
Data Type Boolean for DI and DO signals.
Short, Integer, and Float for AI and DO signals.
Storage Type HL (high byte first, low byte next)
LH (low byte first, high byte next)
Event Type Objects may be assigned to a class. There are four classes of
data. Class 0 is reserved for static data objects. Static data
reflects the current value of data in the outstation (a slave
station in a SCADA system). Class 1, 2, and 3 are reserved for
event data objects. These objects are created as the result of
data changes in the Outstation or some other stimulant. Each
event object can be assigned to Class 1, 2 or 3. Objects may be
grouped in Classes by priority, which is determined by the user,
and the data classes may be polled at varying rates.