Wednesday, 18 November 2009

Information flow from general recipe to equipment entity

The latest version of S88 has this diagram in it.
It is a nice little explanation of how a recipe maps to equipment. It really does not say anything that the original standard does not, but it does provide a different viewpoint.
There was an surprsingly long debate about how the Equipment Procedural Elements should be shown, should they have Start and End elements just like the Recipe Procedural Elements or not. The thinking was that the start and end implied that the bit in-between might be taking part in a sequence in the equipment, when really it is not.
I liked the idea, but also accepted that the EPE must have a start and end.
Furthermore there is a meaning to these icons, differentiating between where they exist.
So I have played a bit with the diagram - click to show full size.

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