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4.4.9.Map Descriptor Example 6 – Read an unknown variation
If the DNP device does not document the object type variation that it serves, set the variation to zero. The remote device will respond with its default variation. The problem is that the response cannot be stored using this Map Descriptor because the response will have its variation non- zero. Thus you would need to make a Server Map Descriptor for each possible variation. A better strategy is to experiment. Use the single Map Descriptor below, wait for the error and then modify the CSV based on information found in the error message.
//Client Side Map Descriptors
Map_Descriptors |
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Map_Descriptor_Name ,Data_Array_Name ,Data_Array_Offset | ,Function | ,Node_Name | ,Address | ,Length | ,Scan_Interval | ,dnpDataType | ,dnpDataVari | ,DnpQualifier | ||
ReadAll_AI’s | ,DA_AI | ,0 | ,Rdbc | ,Node_A | ,0 | ,100 | ,5.0s | ,30 | ,0 | ,6 |
With the variation set to zero the remote device will respond with its default variation.
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