D.21
Date Code 20170927 Instruction Manual SEL-751 Relay
DNP3 Communications
DNP3 Documentation
Default Binary Inputs
The SEL-751 dynamically creates the default Binary Input map after you
issue an R_S command. The SEL-751 uses the Part Number to determine the
presence of Digital Input cards in slots 3, 4, and 5. If present, each digital
input point label, INx0y (where x is the slot number and y is the point), is
added to the default map in numerical order.
Default Analog Inputs
The SEL-751 dynamically creates the default Analog Input map after you
issue an R_S command. The SEL-751 then uses the Part Number to determine
the presence of Analog Input cards in slots 3, 4, and 5. If these cards are
present, the SEL-751 adds each analog input point label, AIx0y (where x is the
slot and y is the point number), to the default map in numerical order to the
DNP map.
Device Attributes (Object 0)
Table D.10 includes the supported Object 0 Device Attributes and variations.
In response to Object 0 requests, the SEL-751 sends attributes that apply to
that particular DNP3 session. Because the SEL-751 supports custom DNP3
maps, these values are likely be different for each session. The SEL-751 uses
its internal settings for the following variations:
➤ Variation 242-FID string
➤ Variation 243-Part Number
20, 22 0–31 NA
30, 32, 34 0 IA_MAG
1IB_MAG
2IC_MAG
3IG_MAG
4IN_MAG
5IAV
63I2
7FREQ
8VAB_MAG
9 VBC_MAG
10 VCA_MAG
11 VAVE
12 3V2
13 P
14 Q
15 S
16 PF
17–99 A portion of these analog inputs can have default values as
described in Default Analog Inputs on page D.21. Outside
that scope, they contain the value NA.
40, 41 0–31 NA
Ta b l e D.1 1 D N P 3 Defa ul t Da ta M a p (Sheet 2 of 2)
Object Default Index Point Label
NOTE: Dead-band changes via
Object 34 are stored in nonvolatile
memory. Make sure to reissue the
Object 34 dead bands after a warm
(HIS C) or cold start (power cycle).
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