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Service-oriented Architectures become more and more important in connecting devices with each other. The main advantages of Service-oriented architectures are higher abstraction level and interoperability of devices. In this field Web services become the most important standard for communication between devices. But this upcoming technology is only available on powerful devices. Embedded hardware is often excluded from the deployment of Web services because of the lack of resources like computing power and memory. In this area also real-time capabilities for process control are required. This paper presents a new approach to handle Web services communication on deeply embedded hardware with the Devices Profile for Web Services Specification.

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In the domain of industrial automation the interoperability of devices gains importance. One major trend is the usage of Ethernet based solutions to connect devices at all levels of a company. Through a common interface technology in all levels of execution, a central control mechanism or business flows can control an entire workflow. This paper describes a new RESTful oriented device architecture, called RODA. RODA will be compared against Web Services based service-oriented devices architecture. It describes how Web services technologies can be adapted to fulfill the requirements of automation, embedded, and real-time domains. The development process in these domains can gain an advantage, with the usage of middleware components based on well-known internet technologies. Furthermore, the created interfaces can be easily reused in other applications and merged with other interfaces to combine a bundle with an additional benefit. The applicability of RODA has been verified on a mobile robotics testbed, where robots are communicating via different wireless interfaces.