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(Draft) An OPC UA PubSub Implementation Approach for Memory-Constrained Sensor Devices

Abstract : Open Platform Communications Unified Architecture (OPC UA) is one of the most well-known standards for building information and manufacturing systems in the industry. It comprises 14 specifications to deploy a system's industrial devices with reliability, security, and interoperability. A system based on the OPC UA specifications is also called an OPC UA system. While realizing this standard and profiting from its advantages, the industrial devices of an OPC UA system must have enough capabilities in computation and storage. It becomes a challenge in the Industrial Internet of Things (IIoT), a scenario in which field-level devices can be memoryconstrained sensor devices. Tailoring OPC UA to fit such devices requires advanced programming skills; otherwise, some essential features of OPC UA must be simplified or removed, such as simplifying the information model on the data provider side or removing message layer security. This paper presents another implementation approach to tailor OPC UA PubSub, a specification for the publish-subscribe messaging pattern, into memory-constrained sensor devices. This approach, titled OPC UA PubSub-C, proposes using a remote OPC UA server as a configurator to operate large-memory-footprint tasks for field-level devices. The proof-of-concept experiment of OPC UA PubSub-C, also in this paper, shows that a memoryconstrained sensor device needs only 48 KB of random access memory (RAM) and 96 KB of read-only memory (ROM).
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Contributor : Patrick Bellot Connect in order to contact the contributor
Submitted on : Sunday, October 24, 2021 - 5:01:08 PM
Last modification on : Monday, January 24, 2022 - 8:26:27 AM
Long-term archiving on: : Tuesday, January 25, 2022 - 6:12:41 PM


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  • HAL Id : hal-03400151, version 1



Patrick Bellot, Quang-Duy Nguyen, Pierre-Yves Petton. (Draft) An OPC UA PubSub Implementation Approach for Memory-Constrained Sensor Devices. [Research Report] Telecom Paris. inPress. ⟨hal-03400151⟩



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