D.11
Date Code 20100129 Instruction Manual SEL-751A Relay
DNP3 Communications
DNP3 in the SEL-751A
DNP3 Settings
The DNP3 port configuration settings available on the SEL-751A are shown
in Table D.7. You can enable DNP3 on Ethernet Port 1 or on any of the serial
Ports 2 through 4, up to a maximum of three concurrent DNP3 sessions. Each
session defines the characteristics of the connected DNP3 Master, to which
you assign one of the three available custom maps. Some settings only apply
to DNP3 LAN/WAN, and are visible only when configuring the Ethernet Port.
For example, you only have the ability to define multiple sessions on port 1,
the ethernet port. Likewise, settings applicable to serial DNP3 are visible only
when configuring a serial port.
Table D.7 Port DNP3 Protocol Settings (Sheet 1 of 2)
Name Description Range Default
EDNP
a
Enable DNP3 Sessions 0–3 0
DNPNUM
a
DNP3 TCP and UDP Port 1–65534 20000
DNPADR Device DNP3 address 0–65534 0
Session 1 Settings
DNPIP1
a
IP address (zzz.yyy.xxx.www) 15 characters “”
DNPTR1
a
Transport protocol UDP, TCP TCP
DNPUDP1
a
UDP response port REQ, 1–65534 20000
REPADR1 DNP3 address of the Master to send messages to 0–65519 1
DNPMAP1 DNP3 Session Custom Map 1–3 1
DVARAI1 Analog Input Default Variation 1–6 4
ECLASSB1 Class for binary event data, 0 disables 0–3 1
ECLASSC1 Class for counter event data, 0 disables 0–3 0
ECLASSA1 Class for analog event data, 0 disables 0–3 2
DECPLA1 Decimal places scaling for Current data 0–3 1
DECPLV1 Decimal places scaling for Voltage data 0–3 1
DECPLM1 Decimal places scaling for Miscellaneous data 0–3 1
ANADBA1 Analog reporting dead band for current; hidden if ECLASSA1 set to 0 0–32767 100
ANADBV1 Analog reporting dead band for voltages; hidden if ECLASSA1 set to 0 0–32767 100
ANADBM1 Analog reporting dead band for miscellaneous analogs; hidden if ECLASSA and
ECLASSC set to 0
0–32767 100
TIMERQ1 Time-set request interval, minutes (M = Disables time sync requests, but still accepts
and applies time syncs from Master; I = Ignores (does not apply) time syncs from
Master)
I, M, 1–32767 I
STIMEO1 Select/operate time-out, seconds 0.0–30.0 1.0
DNPINA1
a
Send Data Link Heartbeat, seconds; hidden if DNPTR1 set to UDP 0.0–7200 120
DRETRY1
b
Data link retries 0–15 3
DTIMEO1
b
Data link time-out, seconds; hidden if DRETRY1 set to 0 0.0–5.0 1
ETIMEO1 Event message confirm time-out, seconds 1–50 5
UNSOL1 Enable unsolicited reporting; hidden and set to N if ECLASSB1, ECLASSC1, and
ECLASSA1 set to 0
Y, N N
PUNSOL1 Enable unsolicited reporting at power up; hidden and set to N if UNSOL1 set to N Y, N N
NUMEVE1
c
Number of events to transmit on 1–200 10
AGEEVE1
c
Oldest event to transmit on, seconds 0.0–99999.0 2.0
URETRY1
c
Unsolicited messages maximum retry attempts 2–10 3
UTIMEO1
c
Unsolicited messages offline timeout, seconds 1–5000 60
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