We recommend that you get thoroughly acquainted with the standard because the following requires advanced know-how of the RDS 81346 standard. The "A Guide to RDS - Reference Designation Systems" handbook contains more detailed information.
Classification Table
The classification tables used to classify systems are usually made up of either a one, two or three-letter code as a part of the reference designation. Common letter codes realize a classification table. The letter codes defined in a classification table are a part of the designation, which gives you an instant recognition of the system based on three different abstraction levels.
ONE letter code (Functional systems) for designation of high-level systems, i.e., high abstraction level.
TWO letter code (Technical systems) for designation of mid-level systems, i.e., mid abstraction level.
THREE letter code (Component systems) for designation of component systems, i.e., low abstraction level.
Even though there are one, two and three-letter codes to choose from, this does not mean that you always have to use all three-letter codes (read: all three classification tables) when creating a structure in CORE.
If you haven't already, you can see all the ISO/IEC RDS 81346-2:2019 classification tables in the RDS 81346 App.
Classification types
Classification tables are used to classify a wide range of data. We have, therefore, divided them into types: CORE (to classify systems) and SIMO (to classify systems interfaces).
Creating a classification table
We understand that some organizations need to tailor classification tables to fit their requirements to make a proper systems breakdown.
The one- and two-letter code classifications tables in RDS 81346-2 have proven to be too abstract and generic for some industries/organizations. The solution for this is to specify industry/organizational specific classes at high- and mid-level systems and share classes of component systems (motor, door, sensor, pipe, valve, etc.).
Industry specific tables are available in, e.g., the 81346-10 standard, which covers systems in the power production industry, and the 81346-12 standard covers construction works.
The Classification table editor
NB! We recommend that you create separate tables to fit each letter code!
A table for one-letter codes (high-level systems)
A table for two-letter codes (mid-level systems)
A table for three-letter codes (component systems)
Create from file
To create a classification table from file you will need to contact us. As for now, this is only available through us.
How to create a classification table
Start by creating a classification table.
Navigate to setup
Select Classification
Select Add Classification Table
Fill out name, description & classification type.
Select Save
Select the newly created classification table to start adding classes.
Creating a high-level classification table
Start by defining your high-level systems (one-letter code):
Select New Class
Add Code (one-letter code)
Add a definition of the code.
Add a name for the code.
Select Save
Once you have created a class, you can add examples to the class (organizational terms for the class).
When you have completed the classification table, you can publish it in the classification overview. Once published you can't edit in the classification table.
Creating a mid-level classification table
Start by defining your mid-level systems (two-letter code):
Create a new classification table for your mid-level systems
Select New Class
Add Code (two-letter code)
Add a definition of the code.
Add a name for the code.
Select Save
You can now add examples to the class.
Component systems
In most cases, it is not necessary to make a classification table for component systems. The three-letter code component systems defined in ISO/IEC RDS 81346-2 can fit into any structure because they are designed to be generic and used in structures covering all industry areas.
However, the procedure is the same as high/mid-level system classification tables.
You can find the component systems in the RDS 81346 App.