Some questions:
- The raw values or a trend line?
- Automatically export on a schedule or enable a user to export when there’s something they want to save?
- Vision or Perspective or neither? (This is potentially related to the above question)
For user interaction, there are components in both vision and perspective that will let you print a trend line or export the data to a file (Easy Chart For Vision, Power Chart for Perspective).
To export the data automatically on a schedule, the Reporting module has a ‘Tag Historian Query’ data source. Reports can then be emailed as a PDF or saved to a network file location.