The TwinCAT 3 JSON Data Interface is an interface for the exchange of data in JSON format between the TwinCAT system and custom applications. The JSON format enables access to the ADS interface with different programming languages. It is possible to access all symbols of the runtime that are also available with the standard ADS interface.In this webinar, Michael Knossalla, product manager TwinCAT, presents the TwinCAT JSON Data Interface. The TwinCAT JSON Data Interface is an interface for the flexibly adaptable exchange of data between TwinCAT systems and user-specific applications. The various communication paths of the JSON Data Interface will be explained theoretically and illustrated with example calls.