User System Defined Attributes

A User System Defined Attribute (USDA) allows the administrator to place a behaviour on a standard AVEVA E3D Design element. For example limits may be applied to attributes of top level elements within AVEVA E3D Design.

The hierarchy of elements which make up a USDA within the Lexicon database is shown below.

A USDA allows the administrator to add the following behaviour to system attributes:

1. Set valid values

2. Define limits

3. Hide attributes on forms

4. Category.

The valid values and limits may be varied with element type.

These values are defined by creating a USDA element in the dictionary database. A USDA element has the following attributes.