How to select devices based on conformance categories

When the automation engineer builds the plant line, it only needs to select the same consistency category of equipment for a profinet IO system, as shown in the selection process, when the process goes to the steps shown in a circle, the selection ends and the consistency category to which the device belongs can be determined. In fact, every time I see this picture, the more I feel according to the consistency category to choose the steps of the device, like playing "Jumping house" game as a child, first draw a variety of shapes (such as square, round, triangular, etc. This is the end of the game.

First look at the above flowchart determines which consistency category will feel a bit abstract, in fact, the consistency category of the various functions and requirements of a little finishing, you can make it look like the model configuration options, will be better understanding. Left, from left to right is the Audi A1 the same car "enterprising", "comfort", "luxury" or "flagship" and other models, from the top to the bottom is the configuration parameters, "0-" respectively indicated standard, optional and none.

The right image from left to right is the consistency category, from top to bottom is a number of features, requirements, standards and other items information, here listed four consistency categories, the consistency category A according to the physical transmission media to differentiate, the purpose is to simplify the list, so that it is more like the usual we see the model configuration table. Or you can imagine that you are choosing a mobile fare package.

How to select devices based on conformance categories