Data Logs and Buffers

Log data to disk or memory, read data logs

Log data from an OPC server for later analysis or visualization.

Control notifications when OPC servers generate data change events.

Functions

`refresh`	Read all active items in group
`start`	Start a logging task
`stop`	Stop a logging task
`wait`	Suspend MATLAB execution until object stops logging
`flushdata`	Remove all logged data records associated with `dagroup` object
`getdata`	Retrieve logged OPC records from toolbox engine to MATLAB workspace
`peekdata`	Preview most recently acquired data
`opcread`	Read logged records from disk to MATLAB workspace
`opcstruct2array`	Convert OPC data from structure to array format
`opcstruct2timeseries`	Convert OPC data from structure to time series format

opcda Object Properties	Configure OPC DA client
dagroup Object Properties	Configure OPC `dagroup` object
daitem Object Properties	Configure OPC `daitem` object

Log OPC Server Data
Describes how to log data from an OPC server for later analysis and/or visualization.
Data Change Events and Subscription
Describes how OPC servers generate data change events, and how you can control data change event notification.

Configure and execute a logging session, and retrieve data from that logging session.