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PACSystems™ RX3i DNP3 Outstation User Manual
GFK-3103B
5.6
User Event Point Push Interface
Point Push Interface is a feature where users will have a mechanism to manually create and push an
Event through user logic into DNP3 Outstation Event Buffer. It allows us to set the Event parameters
such as DNP3 object type, Variance type, Point Number, Value, Date and Time, and/or flags
information. This feature is available in either SOE mode, or Non-SOE Mode. It can be used to interface
a PLC to an SOE or record-based system (local or remote) so that records containing information from
the source can be transferred to the Outstation Module.
To use this feature, a special SVC_REQ #130, with protocol code 0x0002 can be used, for more
information, please see Section 5.14.8. The SVC_REQ is configured with a custom record format as
shown below, that will be used to push an Event into DNP3 Outstation Event Buffer.
Note: A DNP3 point that has been used in the Point Push will not get updated automatically when there
is change in the actual reference memory data, it can only receive updates using Point Push Interface.
So, care must be taken to use this feature only on the points to have such an intended behavior.
5.6.1
Record Format
The Point Push Record Format consists first of a 3-Word Header Section and a 13-Word Record Section.
The Record Section may be repeated up to eight times. Each iteration is concatenated to the preceding
Record Section. Refer Section 5.14.8 for point push service request, and Section 5.14.9 for Record
Sample.
Table 21: Header Section of the Record Format
[000]
[001]
[002]
Note: While the Point Push interface is operating, it will continue to modify the header section. Note
that it takes multiple scans to accomplish a Point Push.
System Operation
Index
Value
1235
1 ... 65534 A counter or changed variable that will signal the Outstation that
1 ... 8
Specific value the Outstation will look for to start the record
there is new data to be processed.
Number of Record Sections to process
Section 5
June 2020
Description
60
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