SATEC SA300 ezPAC Operation Manual - Manual (Page 116)

Chapter 10 Configuring Communication Configuring DNP3
116 SA300 Substation Automation Unit
Scaling 16-bit Binary Counters
Scaling 16-bit Binary Counters allows changing a counter unit in powers of 10 to
accommodate a 32-bit counter value to 16-bit BC object format.
If the scaling unit is greater than 1, the counter value is reported being divided by the
selected scaling unit from 10 to 1000. To get the actual value, multiply the counter
reading by the scaling unit.
Configuring DNP Class 0
The most common method of getting static object information from the device via
DNP is to issue a read Class 0 request. The SA300 allows you to configure the Class
0 response by assigning ranges of points to be polled via Class 0 requests.
To view the factory-set DNP Class 0 assignments or build your own Class 0 response
message:
1. From the Meter Setup menu select Protocol Setup and click on the
DNP Class 0 Points tab
2. Select the object and variation type for a point range.
3. Specify the start point index and the number of points in the range.
Refer to the SA300 DNP3 Reference Guide for available data
points.
4. Repeat these steps for all point ranges you want to be included
into the Class 0 response.
5. Click Send to download your setup to the device.
The factory-set Class 0 point ranges are shown in the picture below.
Configuring DNP Event Classes
The SA300 generates object change events for any static analog input, binary input,
and binary counter point when a corresponding point either exceeds a predefined
threshold, or the point status changes. A total of 64 change event points are available
for monitoring.