FieldComm Group, FDT Group, OPC Foundation and PROFIBUS & PROFINET International are the co-owners of the FDI specification. FieldComm Group develops and maintains the FDI Specifications in its working group structure, establishing and controlling new technology developments and enhancements that support the needs of the process automation industry. FieldComm Group manages the FDI Specifications and other related documents and provides related services and applications to end users.
The FDI Technical Specifications is a collection of 19 documents that specify the different aspects of the protocol and test procedures. Additionally, the FDI Technical Specification package includes the Unified EDDL Technical Specifications which consists of 3 documents. The specifications is a package that includes all of the individual documents in the set (total of 22).