Build Recipes in a Connectionless Process Model

Constructing recipes from a connectionless process model requires more attention to details on the part of the recipe builder when you define the sequence of operations and phases. Connectionless transfers require complementary process phases coordinated in the recipe and by the operator or the control system to move material from one unit to another. Parallel operations must be constructed in the procedure with the source and destination instances assigned to the appropriate operation. Within each operation, you must define the appropriate discharge or charge phase. If multiple units are available for the source instance, you must define manual unit selection in the recipe equipment requirements and you must include a recipe allocate process instance phase in the phase procedure to have an operator manually select the appropriate source unit for the transfer.

If material tracking is required, you must assign any input material being transferred to a parameter of the source process phase and must assign any output material being transferred to a parameter of the destination process class phase.

The following example shows a material transfer operation and phase procedure from a bulk tank to a reactor. The Discharge BulkTks phase has an input parameter defined for the phase that is not shown in the diagram. This parameter is used to track the amount of material transferred from the manually allocated bulk tank to the automatically allocated reactor.