Delete a digital state set

Caution: We recommend that you do not delete a digital state set that has been in use, because archived events associated with the deleted set are no longer visible to PI SDK-based clients, such as ProcessBook 3.x, DataLink 3.x, and PI SMT. Instead, edit the set or create a new digital state set whenever possible. Users who try to retrieve archive values associated with a deleted digital set, whose clients run PI SDK 1.3.6.353 and later, will see:

? StateID: ## | Offset: ##

Note: Previously archived events can be displayed correctly in PI API-based clients. You can continue to see the archived events using apisnap, ProcessBook 2.x and DataLink 2.x. Internally, Data Archive does not remove deleted digital state sets; it renames the deleted digital state set to DIGSET_##, where ## is the set number, and they can be accessed only through piconfig.

If you do delete a digital state set, reconfigure points and events that use the deleted digital state set. For more information, see Reconfigure points that use a deleted digital state set and Reconfigure events that use a deleted digital state set.

The easiest way to delete a digital state set is to use the Digital States tool in PI SMT.

1. In PI SMT, select Points > Digital States.

   Digital state sets for the server you are connected to are shown.

2. Right-click the digital state set that you want to delete and click Delete Set .

3. Click OK.