Schweitzer Engineering Laboratories SEL-751 - Table D.13 Sample Custom DNP3 AI Map

D.27
Date Code 20170927 Instruction Manual SEL-751 Relay
DNP3 Communications
DNP3 Documentation
If it is important to maintain tight data coherency (that is, all data read of a
certain type was sampled or calculated at the same time), then you should
group that data together within your custom map. For example, if you want all
the currents to be coherent, you should group points IA_MAG, IB_MAG,
IC_MAG, IN_MAG, and IG_MAG together in the custom map. If points are
not grouped together, they might not come from the same data sample.
The following example describes how to create a custom DNP3 map by point
type. The example demonstrates the SEL ASCII command SET DNP for each
point type, but you can complete the entire configuration without saving
changes between point types. To do this, you simply continue entering data
and save the entire map at the end. Alternatively, you can use
ACSELERATOR
QuickSet to simplify custom data map creation.
Consider a case where you want to set the AI points in a map as shown in
Table D.13.
To set these points as part of custom map 1, you can use the command SET
DNP 1 AI_00 TERSE <Enter> command as shown in Figure D.5.
Table D.13 Sample Custom DNP3 AI Map
Desired Point Index Description Label Scaling Deadband
0 IA magnitude IA_MAG default default
1 IB magnitude IB_MAG default default
2 IC magnitude IC_MAG default default
3 IN magnitude IN_MAG default default
4 Three-Phase Real Power P 5 default
5 AB Phase-to-Phase Voltage Magnitude VAB_MAG default default
6 AB Phase-to-Phase Voltage Angle VAB_ANG 1 15
7Frequency FREQ.01 1
=>>SET DNP 1 AI_00 TERSE <Enter>
Analog Input Map
DNP Analog Input Label Name (24 characters)
AI_00 := NA
? > IA_MAG <Enter>
AI_01 := NA
? > IB_MAG <Enter>
AI_02 := NA
? > IC_MAG <Enter>
AI_03 := NA
? > IN_MAG <Enter>
AI_04 := NA
? > P:5 <Enter>
AI_05 := NA
? > VAB_MAG <Enter>
AI_06 := NA
? > VAB_ANG:1:15 <Enter>
Figure D.5 Sample Custom DNP3 AI Map Settings