The Blog (Posts about opcua)

S2OPC 1.7.0 release

Systerel — Tue, 20 Jan 2026 08:56:51 GMT

The S2OPC team is proud to announce the 1.7.0 release of S2OPC.

This release introduces several improvements including:

Security Audit: fires OPC UA events in case of cybersecurity related events
Role Permission: to assign permissions to roles rather than individual users, simplifying management and improving security
PubSub Extended Support: it is now available on Windows
History Read: adds the capacity for the server to store previous values of nodes
Node Management : completes the services to add and delete nodes run time
Performance Improvement: improves performance of write/add nodes operations
Zephyr 4.1 Support: compatible with the latest version of this real-time operating system

S2OPC 1.6.0 release

Systerel — Mon, 27 Jan 2025 08:56:51 GMT

The S2OPC team is proud to announce the 1.6.0 release of S2OPC.

This release introduces several improvements including:

OPC UA events management
Support of Zephyr revision 3.6 (see issue #1464)
Support of PikeOS revision 5.1 (thanks to our partner SYSGO) (see issue #1160)
Support of MbedTLS revision 3 (see issue #1446)
A complete rework of our Python binding PyS2OPC (see issue #1251)

As this revision contains important cybersecurity fixes, we advice all our customers to switch to this new revision.

S2OPC 1.5.1 release

Systerel — Thu, 13 Jun 2024 08:56:51 GMT

The S2OPC team is proud to announce the 1.5.1 release of S2OPC.

The main new features are the availability of a demo server implementing the Push Management model according to the OPC UA part 12 (see issue #1247), and a hook to re-evaluate X509IdentityToken certificates for all sessions (on server side, see issue #1370).

S2OPC 1.5.0 release

Systerel — Tue, 06 Feb 2024 08:56:51 GMT

The S2OPC team is proud to announce the 1.5.0 release of S2OPC.

Securing IIoT communications using OPC UA PubSub and Trusted Platform Modules

Olivier Gilles, Daniel Gracia-Perez, Pierre-Antoine Brameret, Vincent Lacroix — Thu, 05 Jan 2023 11:23:15 GMT

In the Industry 4.0 context, data are a valuable asset that must be protected. OPC UA PubSub enables secure and interoperable solutions, but authentication of IIoT devices remains a sensitive issue. This article presents a novel approach based on open source software, using a Trusted Platform Module to protect secrets on devices, and evaluate the security level on a predictive maintenance use case.