Schweitzer Engineering Laboratories SEL-421-4 - Page 1345

16.29
Date Code 20171006 Instruction Manual SEL-400 Series Relays
DNP3 Communication
DNP3 Serial Application Example
Table 16.12 lists the settings for PORT 3 for this example. The physical connection
between the relay and the DNP3 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 opportu-
nity to monitor for data traffic on the network.
Analog Input Map
(Analog Input Label, Scale Factor, Deadband)
1: LIAFM
? <Enter>
2: LIAFA
? LIAFA,1,200 <Enter>
3: LIBFM
? <Enter>
4: LIBFA
? LIBFA,1,200 <Enter>
5: LICFM
? <Enter>
6: LICFA
? LICFA,1,200 <Enter>
7: B1IAFM
? VAFM <Enter>
8: B1IAFA
? VAFA,1,200 <Enter>
9: B1IBFM
? VBFM <Enter>
10: B1IBFA
? VBFA,1,200 <Enter>
11: B1ICFM
? VCFM <Enter>
12: B1ICFA
? VCFA,1,200 <Enter>
13: B2IAFM
? 3P_F,40,40 <Enter>
14: B2IAFA
? 3Q_F,40,40 <Enter>
15: B2IBFM
? DC1,,200 <Enter>
16: B2IBFA
? DELETE 200 <Enter>
16:
? <Enter>
Analog Output Map
(Analog Output Label)
1: ACTGRP
? <Enter>
2:
? <Enter>
Save settings (Y,N) ?Y <Enter>
Saving Settings, Please Wait...........
Settings Saved
=>>
Table 16.12 SEL-421 Port 3 Example Settings (Sheet 1 of 2)
Setting Name Setting Description
EPORT Y Enable port
MAXACC 2 Maximum access level for virtual terminal sessions
PROTO DNP DNP3 protocol
SPEED 9600 Data speed
PARITY N No parity bit
STOPBIT 1 1 stop bit
TIMEOUT 5 Time out virtual terminal session after 5 minutes
TERTIM1 1 Check for termination after 1 second idle time
TERSTRN “\005” Virtual terminal termination string
Figure 16.7 SEL-421 Example DNP Map Settings (Continued)