R.6.40
SEL-421 Relay Reference Manual Date Code 20111215
DNP3 Communications
DNP LAN/WAN in the SEL-421
In order for Binary Input points to have SOE-quality timestamps, each point
must be listed in the SER and the corresponding STATE region points mapped
to DNP (see DNP LAN/WAN Application Example on page R.6.49).
Analog Inputs
Analog dead bands and scaling factors may be set for each individual point.
Use the AIDxxxx setting to impose a dead band of 0–32767. This may be used
in conjunction with a scaling factor of 0.000001–1000000.0 entered in
AISxxxx.
Binary Outputs
A Binary Output manipulates a control point, which is associated to the
Binary Output by a Control Point Identifier (CPId). The CPId represents either
a non-paired (single) control point or a paired (two control points) control
point, where the operation selects the control point. The control points
correspond to all paired and unpaired remote bits and all breaker controls plus
the CCINx bits. CPIds for the SEL-421 Relay, which has 128 CCINx points,
32 Remote Bits, 16 Remote Bit pairs, and controls for 2 Circuit Breakers, are
given in Table 6.22.
Analog Outputs
Any of the 256 Analog Output Quantities in the D1 Region, RA001–RA256,
can be included in a custom data map. Up to 64 Analog Outputs can be
assigned to a custom map. Please note that you must subtract 1 from the
Analog Quantity number to get the correct index. For example, if you want to
specify RA064, use index 63.
DNP Map Command
Use the POR 5 and Ethernet card DNPMAP command to display the data
(object types, indices, default variation and source) and controls (object type,
indices and destination) that are accessible via DNP LAN/WAN. The output
of the DNPMAP command documents the DNP3 data map(s) in the Ethernet
card to help with the configuration of the DNP3 master.
If the DNPMAP setting is set to CUSTOM, then you can specify an additional
integer parameter corresponding to a DNPMAP number (1–5) to view each
custom DNP3 data map. For example, the command DNPMAP 2 would be
used to view the custom data map for DNP3 session 2. If a DNPMAP number
is not specified, a summary of DNP3 map settings for all configured sessions
will be displayed.
Table 6.22 SEL-421 Binary Output CPId Values
CPId Description
0–127 CCIN001–CCIN032
128–159 Remote Bits RB01–RB32
160–175 Remote Bit Pairs RB02/RB01–RB32/RB31
176 Open/Close Pair for Circuit Breaker 1 (OC1–CC1)
177 Open/Close Pair for Circuit Breaker 2 (OC2–CC2)
NOTE: When DNPMAP = CUSTOM,
the DNPPAIR setting is ignored. The
user must choose the appropriate
CPId(s) to select paired or unpaired
points for custom BO maps. For
example, you may set BOM000 = 160,
BOM001 = 130 to set the first DNP BO
point to the remote bit pair RB02/
RB01 and the second to RB03.
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