The IEC-CIM Ontology viewer can be found here. For information on how to use the ontology viewer, make sure to check the documentation. The model OWL ontology underlying the publication can be found on github. Meta-model The IEC-CIM model is modelled in UML. For the purpose of interoperability with other standards, the model is transformed to the Web Ontology Language. A simplified overview of the mapping rules can be found in the table here.