ASE2000 V2 Communication Test Set User Manual 173
26.6.3. DNP3 – Exchange Mode RTU Simulation
Most DNP3 masters acquire data from an Outstation using Class Data scans. Each response
to a Class Data scan includes a set of one or more DNP3 data objects appropriate to the class
being requested.
• Class 0 is the static class and contains all static object groups, those that report the current
values of analog, binary, and counter input points
• Classes 1, 2, and 3 are event classes and contain all event/data change object groups. The
ASE2000 does not di󰀨erentiate between classes 1, 2, and 3. A request for any or all event
classes will cause the ASE2000 to respond with all enabled event object group data
To conîš¿gure a response to a Class 0 data scan, the static object groups that can be included in
a Class 0 scan response must be conîš¿gured with point information, discussed in the Exchange
Properties Menu section. To conîš¿gure a response to a Class 1/2/3 data scan, the change
event object groups that can be included in a Class 1/2/3 scan response must be conîš¿gured.
Applicable object groups for both static and event data are shown below.
Static Class Objects Event Class Objects
Object
Group
Description Object
Group
Description
1 Binary Input (1-bit) 2 Binary Input Change (1-bit)
3 Binary Input (2-bit) 4 Binary Input Change (2-bit)
10 Binary Output Status
20 Binary Counter 21 Binary Counter Change
22 Frozen Counter 23 Frozen Counter Change
30 Analog Input 31 Analog Change Event
32 Frozen Analog Input 33 Frozen Analog Event
40 Analog Output Status
By following instructions in the Exchange Properties Menu section and Object List Subsection,
each exchange is conîš¿gured with the correct number of points and point simulation parameters.
A congured exchange can be included in a Class Data response, simply set the Exchange’s
Transmitag.
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