ABB Relion RER615 DNP3, Communication Protocol Manual, Page: 21 / 36

Table 6: Analog inputs
Description Values
Static (steady-state) object number 30
Static variation reported when variation 0
requested (default setting)
2 (16-bit analog input)
Change event object number 32
Change event variation reported when variation
0 requested (default setting)
4 (16-bit analog input change with time)
Table 7: Default Class assignment for analog input data
Point index Name/description Default deadband Default change event
assigned class (1, 2, 3 or
none)
See the point list manual. Configurable IED setting 2
3.2.3.1 Analog data scaling
The four scaling options associated with analog input data reporting are None,
Ratio, Multiplicative and Divisor. The selection
None means that no scaling is
performed on the source IEC 61850 value. The value is reported as such to DNP3.
Ratio, multiplicative and divisor scaling methods
The PCM600 tool contains four value arguments related to the scaling methods:
sourceMinVal , sourceMaxVal , destMinVal and destMaxVal . The use of these
arguments differs depending on the scaling method.
The ratio, multiplicative and divisor scaling methods use the first two arguments,
souceMinVal and sourceMaxVal , to define the source value range inside which the
object is to be used. The complete value range of the object is usually wanted even
though the user could freely define the source range.
Arguments three and four, destMinVal and destMaxVal , define the destination
value range. In ratio scaling, arguments destMinVal and destMaxVal define the
corresponding range of the scaled, reported DNP3 value.
DNPvalue=
(sourceValue - sourceMinVal)
(destMaxVal-destMinV Val)
+destMinVal
(sourceMaxVal - sourceMinVal)






GUID-9F985816-2268-412A-AE24-ED90EAC44AD7 V2 EN
(Equation 1)
In multiplicative scaling, argument four destMaxVal becomes a scale constant and
argument three destMinVal becomes an offset.
DNPvalue sourceValue destMaxVal destMinVal = × +
( )
GUID-4CB1987F-BDD8-48A2-9389-20B0B2EB271F V1 EN
(Equation 2)
1MRS757820 B
Section 3
Vendor-specific implementation
Recloser Protection and Control RER615 15
Communication Protocol Manual