4.4.3   Tagname

Assigns a unique tag to the single point. This name will identify the tag throughout configuration, DRAW and VIEW during run-time operation. 21 characters in length. See Alias for longer tag names. Can be any alphanumeric. Blank spaces are NOT recommended. Keymacros and scripts will not interpret tags with spaces correctly. Typical tag Name is FIC2492.

Range:                  21 alphanumeric characters
Field Type:            Text 
Tag fields:             .NAME

For more information on legal characters and other tag name consideration see 4.11,1  Legal Characters in a Tag Name, Characters not Permitted and 4.11.2 Tag Name Length