Beside the Connection points classifications for Electrical Connection, the Connection points classifications Mounting Point (CNS_CP|4|6) and Mounting Description (CNS_CP|4|7) are especially important.

Precondition:

All mounting points have to be equipped with a Connection point.

These connection points are classified as Mounting Point or Mounting Description.

	Note
	With regard to two parts to assemble it means, that one of them has a connection point classified according to Mounting Point and the other a connection point classified according to Mounting Description. Both classes have an attribute "Description" and this needs to have the same value in order for the parts to be able to be assembled.

Class "Mounting Point" and "Mounting Description"

Mounting Point describes at which places of the component other components can be mounted.

Mounting Description describes point and direction where the part itself can be plugged into a compatible component.

This is differently supported by CAD systems.

The procedure of classifying with Mounting Point (CNS_CP4|6) is standard.

At the class Mounting Description (CNS_CP4|7), the important point is the attribute Description. Its value will later be displayed as Slot name in E3 and says, that only parts whose Description attribute has the same value, may be plugged in. As different parts could be plugged in, there is a potential need to specify several values. As the CNS classification system does not support arrays, a special method is used. Details on this can be found below.

The figure exemplarily shows the value"HOOD" at the attribute "Description". Basically the name can freely be chosen, however, regard to give meaningful names.

Following figure shows a part in Zuken E3 with 6 slots, respectively with description "MODULE", meaning that the part can receive 6 subparts with Mounting Description "MODULE".

Zuken E3 - 6 slot points

This part itself can be plugged into slots of other parts, if these Slots are named "HOUSING" or "HOOD". Note: Here we have a Mounting Description apparently managing 2 strings.

"Mounting Description" in Zuken E3.

The schema of classifying is completely analogously to the classifying of electrical connections. The only difficulty is that there could be several "Descriptions". In this case the "utility class" CNSELEK|5|3 is used.

In the class CNSELEK|5|3, in the attribute Description, different values can be entered. In this way the Mounting Description manages an array of strings. Compare Fig. „"Mounting Description" in Zuken E3.“.

After having selected the Connection Point classified as Mounting Description (CNS_CP|4|7), the decisive point is the value under attribute Link ID. It references classes of the type CNSELEK|5|3 which are several times instantiated and which again have to have the same value under attribute Link ID. This class is the container for the Mounting Description strings, which are entered in the class of type CNSELEK|5|3, in the attribute Description.

Note

With the present definitions we linked the main class with a set of different strings. That means, a subordinated amount of strings belongs to the main class. In most cases this is completely sufficient for target systems. Otherwise the instance ID of CNSELEK|5|3 serves for the sorting of respective Mounting Descriptions. Only with this definition we can speak of an array, in the proper meaning of the word.

Example: Mounting Description (CNS_CP|4|7) for an array with two entries.

Example: The same named value "LINK_HOOD_HOUSING" links CNS_CP|4|7 and CNSELEK|5|3

So the component itself can be plugged into a "HOOD" or a "HOUSING".