Rockwell Automation 1758-RTU202 DataSite Software User Manual FRN 1.2 - Manual (Page 242)

Publication 1758-UM002D-EN-P - October 2010
242 DataSite DNP3 Configuration Utility (DS DNP3)
SDNP3 Data Points and Database
Choose SDNP3 data points from the Modbus register. Each SDNP data point
matches a Modbus register. Each data point has a set of corresponding
configuration parameters, such as number of data points, Modbus address,
data types, event class and so on. Data points can match actual RTU I/O, and
also match intermediate variable registers. Different data points can match the
same Modbus register.
The collection of SDNP3 data forms the SDNP3 database. The maximum
number of data points of the database is 400.
SDNP3 Data Points
Modbus register addresses can match any type of DNP3 data points. For
example, any address of Modbus 3 or 4 data segments can be mapped to the
AI points and AO points of DNP3.
Modbus Register SDNP Database
00001
...
00101
...
10011
10012
...
30001
30002
...
40001
...
40101
40102
...
0 00001 (DO)
1 00101 (DO)
2 10012 (DI)
3 10011 (DI)
4 30001 (AI)
5 30002 (AI)
6 40001 (AO)
7 40101 (AO)
8 30001 (PI)
9 40102 (PI)
10 41001 (String)
...