Working with deferred parameters

Recipes (operations and unit procedures) can use deferred parameters. A deferred parameter is one where the value is set from a parameter that is one recipe level higher. For example, an operation's recipe parameter can have its value set from a unit procedure's recipe parameter. Only input parameters are deferred.

You can defer a step or recipe parameter to a formula allowing you to chain multiple parameters together. For example, the previous figure showed the phase XFER_IN defined with the step parameter AMT_TO_ADD and its value is defined at the procedure level. In this way, you instruct a recipe to retrieve the step parameter's value from a formula and not from the equipment database.