The focus of the “OPC UA Information Model for CNC systems” is on data that is situated within the CNC kernel but not within the PLC of a CNC system. This results out of the main objective of this Information Model to standardize an interface that provides and enables to access clearly defined raw data. Hence this Information Model addresses applications like UIs, PDA/MDA systems, diagnosis and monitoring applications, but not necessarily MES or ERP systems as the two latter ones mostly need summarized data.

For PLC data and in a wider context for MES and ERP data, please refer to suitable standards and OPC UA companion standards like OPC 30000 (PLCopen) or OPC 10030 (ISA 95).