Learn more about OPC Toolbox

Working with OPC Data

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When an OPC server returns data from a read or logging operation, three pieces of information make up the data. The Value, Quality, and Timestamp all contribute information about the data point that is returned. As a result, you need to understand how to deal with this information together, because one aspect of the data in isolation will not provide a complete picture of the data returned by a read operation, data change event, read async event, or toolbox logging task.

This chapter describes how OPC Toolbox software handles data returned by an OPC server.

• Understanding OPC Data: Value, Quality, and TimeStamp

• Working with Structure Formatted Data

• Understanding Array Formatted Data

• Working with Different Data Types

Logging OPC Server Data

Understanding OPC Data: Value, Quality, and TimeStamp

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