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The adoption of service-oriented architectures based on Web services in industrial automation promises increased interoperability and flexibility. However, industrial automation requires real-time processing, i.e. a task has to be processed within a specific deadline, which is a large obstacle for utilizing Web services in this domain. The time-constrained services (TiCS) framework meets the demands of industrial automation and empowers automation engineers to develop, deploy, publish, compose, and invoke time-constrained Web services. This paper presents the TiCS real-time SOAP engine for industrial PCs called SOAP4IPC. It permits the execution of Web services in real-time. The architecture of the SOAP4IPC engine, implementation details, and experimental results are discussed.