Rockwell Automation 1758-RTU202 DataSite Software User Manual FRN 1.2 - Manual (Page 239)

Publication 1758-UM002D-EN-P - October 2010
DataSite DNP3 Configuration Utility (DS DNP3) 239
SDNP3 Data Scan Mode
According to the requirements for communication structures, channel types
and master station to different data points, the following types of data scan
mode can be selected.
• Self-reporting on changes
The master station will not communicate with the equipment of the
slave station proactively. The equipment of the slave station reports the
event data to the master station proactively.
• Self-reporting on changes plus polling
The master station will scan all or part of the static data from the
equipment of the slave station, and at the same time, the equipment of
the slave station will report the event data to the master station
proactively.
• Self-reporting on changes under polling
The master station will scan all or part of the static data from equipment
of slave station, and scan event data at periodic intervals, such as slow
scanning of static data, quick scanning of event data.
• Polling
The master station only scans all or part of the static data.
SDNP3 Channel and Session
An SDNP3 channel is the physical SDNP3 communication connection, such
as a network port or a serial port.
An SDNP3 session is the logical communication links established between a
master station and a slave station of SDNP3.