The DEXPI project produces informal and formal specifications for the data-exchange in the process industry.
The current DEXPI Specification can be found on Github: https://github.com/dexpi
The DEXPI Sandbox
The DEXPI Export Verificator
The DEXPI Information Model
The DEXPI group has agreed about the concentration on a first exemplary Process and Instrumentation Diagram for the application of data exchange:
P&ID Piping example based on ISO 10628: