OPC UA Historical Data

[x] Enable History Recovery

Marking this initiates the history recovery every time connector communication to an OPC UA server is broken and then re-established, and every time the connector is stopped and restarted. The history recovery is implemented for those OPC UA dynamic variables that have a history to recover.

Read Block Size [10]

Specifies the maximum number of variables in the history Read() call.

Number of Values per Node [ 0 ]

Specifies the maximum number of returned events per variable in the history Read() call.

0 means the server returns the maximum number of values per node.

[x] Include variables having historical data only

Marking this causes the connector to scan those OPC UA variables that store only historical data; that is, variables without current values.

Note: When marked, the Historical Data Scan Period is used for polling.

Historical Data Scan Period [s] [ 60 ]

Specifies the scan period used for polling variables with historical data.