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P. Denzler, T. Frühwirth, A. Kirchberger, M. Schoeberl, W. Kastner:
"Static Timing Analysis of OPC UA PubSub";
Talk: 2021 17th IEEE International Conference on Factory Communication Systems (WFCS), Linz, Austria; 2021-06-09 - 2021-06-11; in: "17th IEEE International Workshop on Factory Communication Systems 2021 WFCS 2021", (2021), ISBN: 978-1-6654-2478-3; 167 - 174.

Industrial automation is changing towards higher integration and seamless communication. A stepping stone is end-to-end real-time machine-to-machine communication, now becoming feasible with technologies such as time-sensitive networking (TSN) and OPC Unified Architecture (OPC UA) publish-subscribe. While TSN takes care of communication, the OPC UA stack´s execution time behavior remains unknown. This paper highlights experiences made while adjusting the OPC UA subscriber of the open62541 stack for worst-case execution time (WCET) analysis. Two directly connected time-predictable T-CREST platforms hosting the publisher and subscriber delivered end-to-end timing measures validating the WCET estimates. The paper concludes by outlining further research with several time-predictable publishers and subscribers.

worst-case execution time, industrial software, real-time communication, OPC UA

http://dx.doi.org/10.1109/WFCS46889.2021.9483614

https://publik.tuwien.ac.at/files/publik_297114.pdf

Project Head Wolfgang Kastner:
FORA