Tagging and coding of industrial systems, installations, and equipment is essential to relate documentation to real physical products. Legalization (e.g. European Machinery Directive) requires that products are properly tagged. While some companies have developed their own reference system for tagging installations, products and documentation, others are following international standards such as ISO/IEC 81346, RDS-PP and Cuneco Coding System (CCS).

Typical challenges when working with self-developed reference systems:

  • Outdated – A reference system must be maintained. When products and technology are being developed, the reference system must also be updated
  • Inconsistent – Self-developed reference systems are often inconsistent, e.g. the tags are not unique for identification
  • Not compliant with international standards – Self-developed reference systems are rarely compliant with international standards

A possible consequence of these issues can be a reference system that is not compliant with legalization and not in accordance with agreements with customers, suppliers and others. An insufficient reference system can lead to negative results such as errors in communication and improper documentation.

Typical challenges when applying international standards such as ISO/IEC 81346 and CCS:

  • General standards – The standards are general and can be applied for many types of products and industries. It can be difficult to see how a general standard can be applied for a specific product or installation
  • Very few examples – The standards offer very few examples of how their reference system can be applied
  • How to apply – A standard very rarely explains how the reference system is to be used; for example how to include the references in documents, how to include the references in the IT systems or what to do with existing products and documentation


The Danish construction industry has developed a standard for tagging buildings and building elements. CPC has helped develop this standard on behalf of Cuneco; it’s called Cuneco Coding System (CCS).

The CPC approach includes the following tools and methods:

  • RDS structures – CPC has developed a method for systematically working with structures and the related tags
  • RDS coding tool – To support the implementation of ISO/IEC 81346, CPC has developed a software tool for working with multi-structures and for automatic tagging of the components
  • RDS diagram tool - To support the implementation of ISO/IEC 81346, CPC has developed a software tool that can generate RDS structures based on block diagrams


CPC is experienced in the successful implementation of ISO/IEC 81346 in industrial projects and in applying the standard in an operational manner.

CPC can offer you the following benefits when implementing or revising a reference system:

  • Simpler coding system
  • Easier and more constant coding principle
  • Higher quality in codes in documentation

Contact CPC to learn more about how your business can benefit from working with ISO/IEC 81346 and CCS.

Contact CPC

Contact CPC

Contact CPC to learn more.