Parameter reference paths and aliases

When a phase algorithm references a parameter, the general format is:

    module/function block/parameter.field

For example, the following could be used to reference the current value of the output parameter of the PID function block in a flow control module, FIC_COLOR_100:

FIC_COLOR_100/PID1/OUT.CV

When the phase logic in a unit module references a module, an alias (placeholder) enclosed in number signs (#) can be used in place of:

• the module name
• the full path
• part of the path, starting from the beginning

For example, an alias such as #FLOW_CONTROL# could be set up to reference any of the following:

• FIC_COLOR_100
• FIC_COLOR_100/PID1
• FIC_COLOR_100/PID1/OUT
• FIC_COLOR_100/PID1/OUT.CV

If the control module is part of an equipment module, the control module name would be preceded by the equipment module name.

When the unit module is created, click Aliases under the unit module, select the alias, and open its Properties dialog to assign the parameter reference path. You can create additional aliases for non-class-based modules at the unit class level using the New → Alias option on the context menu. 

In a class-based system, aliases are automatically created for each module when the module class is added to a unit class. With class-based modules, you can browse to any parameter within the module. This will be demonstrated during phase logic configuration.