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FS-8700-47 DNP 3.0 Driver Manual Page 10 of 51
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4.4. Client Side Map Descriptors
4.4.1. FieldServer Specific Map Descriptor Parameters
Column Title Function Legal Values
Map_Descriptor_Name Name of this Map Descriptor
Up to 32 alphanumeric
characters
Data_Array_Name
Name of Data Array where
data is to be stored in the
FieldServer
One of the Data Array names
from “Data Array” section
above
Data_Array_Offset Starting location in Data Array
0 to maximum specified in
“Data Array” section above
Function
Function of Client Map
Descriptor
Rdbc, Wrbc, Wrbx
4.4.2. Driver Specific Map Descriptor Parameters
Column Title Function Legal Values
The following parameters are used by a number of drivers.
Node_Name Name of Node to fetch data from
A Node Name specified in
“Client Node Descriptor”.
Special Map Descriptors are
discussed in Error!
Reference source not
found..
Length
Length of Map Descriptor. If a request length
is too large the DNP 3.0 driver will produce a
message and a panic. The maximum length
is a function of the data object and data
variation.
1 – 1000
Address Starting address of data element to be read 0, 1 , 2 etc
The following parameters apply only to the DNP 3.0 Driver
DnpDataType
Corresponds to the Data Object Types defined
in the DNP data object Library. Additional
information is provided in Appendix A.9
1, 2, 10, 12, 30, 31, 32, 33,
40, 41, 20, 22, 23, 50, 51, 52,
60, 80 - decimal numbers
DnpDataVari
Corresponds to the Data Object Variant
defined in the DNP data object Library. Enter
as decimal number. Additional information is
provided in Appendix A.9
0, 1,2,3 etc
Legal values are determined
by the value of dnpDataType.
DnpSubType*
Used to tell driver which Suffield of the object
to map to/from the FieldServer Data Array.
Additional information is provided in Appendix
A.10
Value, flags, time1, time2,
combo
DnpFlagBit* Not Used.
DnpQualifier*
This parameter is only required if you need to
over-ride the default qualifier used by the DNP
3.0 driver. Refer to Appendix A.11
Zero, 1, 6, 7, 8, 17h -
hexadecimal values. For
qualifier 17h specify the
value of dnpQualifier as 17 in
the Map Descriptor. For
Qualifier zero use the string
“zero”
DnpFunction*
This parameter is only required if you need to
over-ride the default function used by the DNP
3.0 driver. Refer to Appendix A.10
Legal DNP function codes.
Correspond to the function
code required on vendor’s
implementation table.