SATEC PM180 Operation Manual User Manual
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Chapter 10 Configuring Communication
Protocols
Configuring DNP3
114
PM180 Substation Automation Unit
Object change events are normally polled via DNP Class 1, Class 2 or Class 3
requests. You can link any change event point to any event class upon the event
priority. Refer to the PM180 DNP3 Reference Guide for more information on polling
event classes via DNP.
A change event point index is normally the same as for the corresponding static
object point. To use independent numeration for event points, enable re-mapping
event point indices via DNP Options setup (see above) so they start with index 0.
Define a separate event setpoint for each static object point to be monitored for
change events. To view or change the factory-set DNP event setpoints, select
Protocol Setup from the Meter Setup menu and click on the DNP Event Setpoints
tab.
The number of event setpoints for each static object type is specified via the
Note: The device clears all event buffers and links the default set of static
points to each event object type every time you change the number of points
for any of the objects.
To define setpoints for selected static points:
1. Check the “Ext” box if you wish to use the extended point list.
2. Select a parameter group and then a desired parameter for each
event point.
3. For AI and BC points, select a relation and an operating threshold
or a deadband to be used for detecting events. All thresholds are
specified in primary units. The following relations are available:
Delta – a new event is generated when the absolute value of
the difference between the last reported point value
and its current value exceeds the specified deadband
value;
More than (over) - a new event is generated when the point
value rises over the specified threshold, and then when
it returns below the threshold minus a predefined
return hysteresis – applicable for AI objects;
Less than (under) - a new event is generated when the point
value drops below the specified threshold, and then
when it returns above the threshold plus a predefined
return hysteresis – applicable for AI objects.
Hysteresis for the return threshold is 0.05 Hz for frequency and 2%
of the operating threshold for all other points.
4. Check the “Ev On” box for the points you wish to be included into
event poll reports.