Monitoring Data with Tags

Create and configure a tag to track the value of scalar data.

1. In Tag Viewer, click Create.
2. Specify a path, or display name, for the tag. You can also use the wildcard character (*) to specify multiple paths. Refer to the following table to see how you can use the wildcard to specify multiple paths, or display names.

   Goal	Example Tag Search Path	Result
   I want to specify one tag path.	Station1.Temperature	Searches for one tag, Station1.Temperature.
   I want to specify multiple tags using a common path.	Station*	Searches for all tags starting with Station.

   

   Note  

   Use dot separators instead of slashes in tag paths. The tag path is how you programmatically reference the tag.

3. Specify the data type of the values the tag will hold.
4. Specify the retention type, which determines how long to store previous tag values. After you configure your tag, you can see a chart of current and past values under History.
5. Specify whether the tag will aggregate values. If a tag collects aggregates, you can see the minimum, maximum, and average values of the tag, as well as its total number of updates, in the Tag Viewer list.
6. Click Create.
7. Click the gear next to the tag to view details and set keywords or properties for the tag. You can use keywords and properties to search for tags in Tag Viewer or programmatically with Query Tags.
8. Click Tag Viewer to return to your list of tags.
9. Search for a tag in one of the following ways:
   • Type a tag path or part of a tag path in the search bar.
   • Click the filter button next to the search bar to search for exact matches. You can include multiple queries, but only tags matching all the queries return as results.
   You can use the wildcard character (*) when you search by path.

After you create and configure a tag, you can write values to tags, read tags, query tags, and create alarms or data visualizations using tag values.