Dipl.-Ing.

Stiller, Michael

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  • Publication
    Cloud-based industrial control services
    ( 2018)
    Langmann, Reinhard
    ;
    Stiller, Michael
    The paper presents the concept and implementation for Cloud-based Industrial Control Services (CICS) as a next generation PLC. As a distributed service-oriented control system in the cloud, a CICS controller can replace the traditional PLC for applications with uncritical timing in terms of Industry 4.0. The CICS services are programmed to industry standards, pursuant to standard IEC 61131-3, and executed in a CICS runtime in the cloud. This paper gives an overview about the concept and implementation, discusses the results of application examples as well as the evaluation of the operability of a CICS controller.
  • Publication
    A comparison of current web protocols for usage in cloud based automation systems
    ( 2018)
    Shekhada, Dhavalkumar
    ;
    Stiller, Michael
    ;
    Salvi, Aniket
    Web protocols are critical factor in successful implementation of web based industrial applications. Nevertheless, the main issue that significantly affects the real-time performance of such application is Web latency. Traditional web communication technologies, such as HTTP1.1, provide a uni-directional link and a request/response message exchange model. This solution is not feasible in web based applications involving large number of different interconnected devices, such as Industrial Internet of things. In this paper, we focus on bi-directional web protocols WebSocket, WebRTC and HTTP/2.0. We compare the performance parameters like latency, reliability, and security of these three protocols. At the end of this paper, we will present some suggestions how to optimize the usage of web protocols in industrial process automation applications.