This activity is used to define a cross reference attribute scheme. This cross-reference enables the automatic notification of process data changes between objects that have a valid process object relation. For example, when a Process Stream object is set as a Process Object to a Pump object, it will trigger and notify the process data value differences on the Pump Object, when the Process Stream data is changed. These process data changes could then be copied or ignored by the relevant objects, which in turn switches off the notification.
The inheritance applies between two classes - Consumer and Producer. Attributes in different classes sharing the same name are generally cross-referred. This can be simplified by selecting the Copy All Attributes option. Attributes in different classes with different names are mapped manually, one at a time.
By not defining attributes for either class, a dummy cross-reference can be created where the process change is shown but changed process data cannot be copied in.
This activity can be performed on Cross Reference Between Attributes page.
A cross reference attribute scheme is created,