In 8.1.17, the Tag Editor was redesigned to improve usability. The new Tag Editor now requires fewer clicks and keeps relevant tag information visible while modifying bindings, alarms, and event scripts. Additional improvements include the following:
- Only expression bindings now require opening the dialog to change. Tag and Parameter bindings can be edited in-line within the tag editor and are not shortened.
- Sorting in UDT Editor now sorts folders first, then tags.
- Users can add tags in the UDT Editor without having to click the root of the UDT/folder.
- UDT Parameters now show when they are overridden.
- The Tag Editor uses the entire width allowed to display content.
- UDT properties are added in-line to bindings now rather than clearing out the content.
- Property values are now all left-aligned.
- The Expression editor now accepts drag and drops from the UDT Editor or Tag Browser.
Pages detailing features of the previous Tag Editor can be found in Deprecated Ignition Features.
Tag security is often the best way to configure security for data access. By defining security on a Tag, you affect the Tag across wherever it is used, as opposed to configuring component security on each component that displays or controls that Tag.
There are three properties on Tags that can restrict access.
Read Permissions: Defines the security levels required in order to read values from a Tag
Read Only: Defines whether a Tag is read-only or writable
Write Permissions: Defines the security levels required in order to write values to a Tag
Users with specific roles and zones can be given read/write access to a Tag, while other users with other roles are excluded from modifying the Tag.
If a user opens a Perspective view or a Vision client window that has components that are bound to a Tag they do not have permissions for, the user will see an overlay on top of the component. For more information, see Quality Codes and Overlays. The following example shows a tank displayed in a session, but the user does not have read permission for the Tag it is bound to.
