The three sample XML input scripts are in the DeltaV\samples\opchda directory for use with the OPCHDAClient.exe sample client. The three sample script files provide examples of how to read raw, processed, and attribute data from the DeltaV OPC History Server. The sample script files are named OpdHdaRaw.xml, OpcHdaProcessed.xml, and OpcHdaAttr.xml.
The script file specifies what the client application should perform. It defines one or more steps. Each step retrieves data from one data item and generates one data output file. A single log file is also generated that contains overall execution procedure and detailed error information.