DNP3 Operation
Document No. D109-010
Page 75 of 108
Revision 1.15
Each time a new event is written into the Logix controller, bit 0 of the EvtPending DINT will
be set to 1. This is an indication to the Logix application code that an event has not yet been
processed. It is recommended to clear this bit once the event has been processed to avoid
duplicate processing of events.
NOTE
: Refer to the Logix example code which provides a mechanism to extract
the DNP3 Events from the Logix Master Events Tag.
Figure 5.17 – DNP3 Master Event Unloading
Refer to the Logix Master Example code which can be found on the website at the following
link
http://www.aparian.com/products/dnp3router
. The Logix Master Example code provides
UDTs and AOIs to process events in the Master Event Buffer and copy the values to the
respective static DNP3 objects.
5.5.
REPORT-BY-EXCEPTION
Reporting by Exception can considerably reduce network traffic by eliminating or reducing
continuous polling.
Reporting by exception can be configured by, enabling Events in each Outstation for all
relevant groups. The DNP3 Master needs to have Events enabled in Unsolicited Class mode.
At least one Logix Tag Mapping is required to set the Logix Target. This item’s scan interval
can be set to a large number.
Содержание A-DNP3R
Страница 1: ...DNP3 Router User Manual A DNP3R Document No D109 010 09 2017 Revision 1 15...
Страница 64: ...Logix Operation Document No D109 010 Page 64 of 108 Revision 1 15 Figure 4 8 DNP3 Message Response Example...
Страница 93: ...Diagnostics Document No D109 010 Page 93 of 108 Revision 1 15 Figure 7 17 Web interface...