Alias names are automatically created for any control module classes/equipment module classes when they are added to a unit class. Alias names are placeholders for the actual parameter reference path strings used in the phase logic defined in a phase class. Using aliases makes the phase logic more flexible by allowing phases to be used by multiple units/equipment.
You can create alias names directly in the DeltaV Explorer and then bind the alias by browsing to the parameter reference path. It is also possible to create an alias name and then drag a control module class or equipment module class to the alias name. This creates in the unit class a module block for the equipment or control module class with the alias name.
Alias names can be used for all or a portion of the parameter reference path (module/function block/parameter.field). An alias can also be used to point to a unit parameter on a unit module. Examples of valid alias names and their reference paths are:
#AGITATOR# = AGIT_500
#INLET_VLV# = XV_BASE_500/DC1/SP_D.CV