# Set up data logging (Setup tab)

In the Setup tab, provide a brief description of the data log model, and specify how many tag values to store.

## Options

- Model name

  This is the name you specify when you save the data log model. To save the model, click Close, or, from the File menu, choose Save.

  Tip: | You cannot save a data log model until you have added at least one tag to the model (in the Tags in Model tab).

- Description

  Type a brief description of the model, up to 50 characters. This is for your information only.

- Maximum data points

  Type the total number of tag values to store. When this number is reached, the oldest tag values are deleted to make room for new values. The higher you set the limit, the more space the data log file requires on the run-time computer; or, if you are logging to a custom path on a remote computer, more space is required on the remote computer.

  Tip: | The minimum value to store is 100. The maximum value is 1,000,000 for version 7.00.00 or 300,000 for release versions earlier than 7.00.00. The default is 1000.

Important: | Applications with a very large number of data points in the data log model, at or close to the maximum, will take longer to close than applications with a smaller number of data points.

## See also

About data logging

Set up data logging (Paths tab)

Set up data logging (Log Triggers tab)

Set up data logging (Tags In Model tab)