Import and delete OPC HDA variables
- Last UpdatedFeb 24, 2025
- 2 minute read
You can use the OPC HDA variables configuration tool to import variables from the OPC HDA server into the project and delete variables from the project.
Prerequisite
Add the OPC HDA data source and data connection before you using the OPC HDA variables configuration tool.
To import and delete OPC HDA variables
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Verify that the connection to the OPC HDA server is open.
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In the Project Explorer, right-click the data source, and then select Configure Variables

The OPC HDA variables configuration tool appears, and it shows a static view of the OPC HDA server as it exists at the time that you open the tool. If the variable configuration on the OPC HDA server changes, the changes do not appear in the OPC HDA variables configuration tool until you click Refresh on the tool.
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Use the tool controls to filter, sort, and group variables according to your requirements.
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Take note of the variable mapping indicators to distinguish the variables in the list.
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Select the check boxes of the variables that you want to import into the project, and clear the check boxes of the variables that you want to remove from the project.
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Click OK to commit the changes.