This specification distinguishes between recipes which are merely present on the vision system and prepared recipes, which have then been activated in such a way that they can be immediately used for processing.

Thus, we have two conceptually distinct operations:

• AddRecipe: Adds a new recipe to the vision system.
• PrepareRecipe: Prepares one of the recipes on the vision system. It is expected that after successful preparation, the recipe can be immediately used by a Start method for processing.

This specification assumes that the client has no knowledge of the internal recipe management by the vision system. The only information provided by the client is the ExternalId and the ProductId.

In many cases, the automation system, represented here by the OPC UA client, will want to work only with the ProductId.