Siemens 3AD8 Instruction Manual page 7

Point mapping example 1
This is a typical DNP3 mapping for the RCU
analog input points to reduce bandwidth
requirements by excluding some points and
keeping the DNP3 indices contiguous so
that an integrity poll will return DNP3
indexes 0 to 13 in a single message. The
points in grey are not mapped and cannot
be read.
Figure 1: Point mapping example 1
Point mapping example 2
A similar mapping to above, but with
unwanted points mapped and assigned to
class "None" at the end of the DNP3 point
index. The unwanted points will not
generate events and will not be returned in
a status poll, but can still be read by issuing
a command to read that point or data type
directly. This mapping will reduce the
bandwidth requirements by the same
amount as the previous example, but the
unwanted points can still be read if
necessary.
Figure 2: Point mapping example 2
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