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A smart transducer network consists of a set of transducer nodes interconnected with a digital bus. Smart transducer technology implicates the development of systems supporting the timely exchange of real-time data. Additional requirements are support for system integration, mechanisms for dynamic reconfiguration, and diagnostic interfaces. Such systems should be composable and ease controlling system complexity, i.e. support the system engineer in understanding the system behavior Furthermore, developers expect diagnostic services, which are deterministic, reproducible, and do not interfere with real-time services. This paper describes three interfaces for smart transducer networks, which provide the required services while yielding the mentioned properties. We describe a case study demonstrating the effectiveness of the three interfaces for the proclaimed purpose.