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FS-8700-47 DNP 3.0 Driver Manual Page 13 of 51
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4.4.5. Map Descriptor Example 2 – Simple Read – Extract the Quality/Status
In this example the status data rather than the input values are written to the data array specified.
// Client Side Map Descriptors
Map_Descriptors
Map_Descriptor_Name ,Data_Array_Name ,Data_Array_Offset ,Function ,Node_Name ,Address ,Length ,Scan_Interval ,dnpDataType ,dnpDataVari ,dnpSubType
A1 ,DA_AI3STAT ,20 ,Rdbc ,Node_A ,20 ,10 ,5 ,30 ,1 F,lags
4.4.6. Map Descriptor Example 3 – Simple Read Extract Value & Status
In this example we extract both the value and the status using two Map Descriptors.
// Client Side Map Descriptors
Map_Descriptors
Map_Descriptor_Name ,Data_Array_Name ,Data_Array_Offset ,Function ,Node_Name ,Address ,Length ,Scan_Interval ,dnpDataType ,dnpDataVari ,dnpSubType ,dnpAsscoiate
A1 ,DA_AI3 ,20 ,Rdbc ,Node_A ,20 ,10 ,5 ,30 ,
1
,Value ,1
A2 ,DA_AI3STAT ,20 ,Passive ,Node_A ,20 ,10 ,5 ,30 ,
1
,Flags ,1
The results of the
read are placed in
this data array.
Tells the driver to write the status byte to the data
array, ignoring the value of the object being read.
You can use value / time1 / time2 / flags / combo as
legal values for this parameter. The default is value.
Not all objects have these sub
-
fields.
DNP Object Type is
Analog Input
The common value for dnpAssociate
ties these two Map Descriptors
together and tells the driver to use
them both to process the response
data.
The status data is
placed into a different
array from the value
data.
Only one Map Descriptor need be active. The
active Map Descriptor generates the poll. Both
the active and passive Map Descriptors are
used to process the response.
DNP Object Variation is
16 Bit Analog Input