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Ralph Lange, ITER Organization

OPC UA Device Support Overview and Status. Ralph Lange, ITER Organization. OPC UA Background. Industrial protocol (2006) to interface SCADA to PLCs Covers live data, alarms , events, historical data Based on OPC Classic ( Microsoft; 1996), it provides

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Ralph Lange, ITER Organization

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  1. OPC UA Device SupportOverview and Status Ralph Lange, ITER Organization

  2. OPC UA Background • Industrial protocol (2006) to interface SCADA to PLCs • Covers live data, alarms, events, historical data • Based on OPC Classic (Microsoft; 1996), it provides • Functional equivalence to OPC Classic • Portability • Safety (authentication, encryption) • Information modeling (user defined structures) • OPC UA is gaining traction as universal integration tool • Siemens S7-1500 series PLCs include an embedded OPC UA server

  3. EPICS Device Support • Based on commercial C++ Client SDK • Vendor: Unified Automation (~3.5k€ for sources and 1yr support) • Binaries can be distributed royalty-free • Platform: Windows and Linux • Prototype by Bernhard Kuner (HZB / BESSY II)https://github.com/bkuner/opcUaUnifiedAutomation • ITER use cases tested by F4E (ITER) and TCS (India): • S7-1516/1518 embedded OPC UA server • WinCC-OA embedded OPC UA server

  4. Status and Roadmap • Requirements Specification v1.0 reviewed and agreed:https://bit.ly/opcua-srs-10 • Design done (no formal doc yet) • Implementation is in “usable pre-release” state • no arrays, no user-defined structures • Feature-complete implementation by end of 2018 • Under EPICS license, upstream repository on GitHub:https://github.com/ralphlange/opcua

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