R.6.30
SEL-421 Relay Reference Manual Date Code 20111215
DNP3 Communications
Application Example
(Continued from previous page)
8: 478
9: 607
Binary Output Map
(Index Number)
1: 0
2: 1
3: 2
4: 3
5: 4
6: 5
7: 32
Analog Input Map
(Index Number, Scale Factor, Deadband)
1: 0
2: 1, 1.000, 200
3: 2
4: 3, 1.000, 200
5: 4
6: 5, 1.000, 200
7: 36
8: 37, 1.000, 200
9: 38
10: 39, 1.000, 200
11: 40
12: 41, 1.000, 200
13: 87, 40.000, 40
14: 91, 40.000, 40
15: 100, , 200
Analog Output Map
(Index Number)
1: 0
Save settings (Y,N) ?Y <Enter>
Saving Settings, Please Wait...........
Settings Saved
=>>
Figure 6.2 SEL-421 Example DNP Map Settings
Tab le 6.18 lists the settings for PORT 3 for this example. The physical
connection between the relay and the DNP master is an EIA-485 network. An
SEL-2884 interface converter on the relay PORT 3 provides conversion from
EIA-232 to EIA-485. Unsolicited reporting has been disabled because the
network is wired as a four-wire connection and does not provide carrier
detection or the opportunity to monitor for data traffic on the network.
Tabl e 6 . 18 SEL -42 1 Port 3 Example Settings (Sheet 1 of 2)
Setting Name Setting Description
PROTO DNP Protocol
SPEED 9600 Data speed; hidden and set to 9600 if MBT set to Y
RTSCTS N Hardware handshaking enable
DNPADR 101 DNP address
ECLASSB 1 Event Class 1 for binary event data
ECLASSC 1 Event Class 1 for counter event data
ECLASSA 1 Event Class 1 for analog event data
ECLASSV OFF Disable virtual terminal event data because this feature is not
supported by master
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