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Raw Data

Read unprocessed data from an OPC HDA server

Retrieve raw values from the server, and processes that data using MATLAB® rather than relying on the server to perform the processing for you.


readRawRead raw data of specified time range from HDA server
readModifiedRead modified data from an OPC HDA server


Read Historical Data Over a Time Range

Request the value, quality, and timestamp data for a list of items over a specified time domain.

Reading Modified Data

Read only modified data from the server.

Native MATLAB Data Types from Read Operations

Specify that the read operations return data as MATLAB data types.