Two client applications are provided that allow browsing the items in the DeltaV OPC History Server and displaying raw data for individual items for a fixed time span or start/end time with a fixed number of samples. The applications can write the returned data to a file in a common file format (csv, xml) that can be used by third-party applications.
One sample client application (OPCHDAClient.exe), located in the DeltaV\bin directory, allows you to create an XML input script file that is used as a command line argument and writes output to text files. Several example script files are available in the DeltaV\samples\opchda directory.
To use the OPCHDAClient.exe sample client provided with the DeltaV software, it is assumed that the user is familiar with XML and has access to an XML schema tool, such as XML Spy.