Rockwell Automation 1758-RTU202 DataSite Software User Manual FRN 1.2 - Manual (Page 265)

Publication 1758-UM002D-EN-P - October 2010
DataSite DNP3 Configuration Utility (DS DNP3) 265
10. Repeat steps 1 through 6 to set the parameters for session 3.
For session 3, the station address is 6. The controller will send the DI
change events to the master immediately as class 1 type, and save the DI
events into the buffer in case the connection fails. The buffer length is
2000 and scan time is 200 ms. It is not necessary to detect AI change
events.