OPC UA Server for FANUC FOCAS

Fixed an issue in the monitored items handler configuration. Due to an implementation error, the background worker responsible for polling the CNC controller was not running when subscriptions were created. As a result, the server cache was not populated, forcing the OPC UA server to perform synchronous reads from the controller for every client request. This could lead to slower response times and client timeouts under heavy load. The issue has been resolved. Background polling and the caching mechanism now operate correctly, even with a large number of subscriptions and monitored items.

Fixed an issue in the caching mechanism that could, in rare cases, incorrectly trigger a cache miss. As a result, clients could receive a "no data" error even though valid data was already available in the server cache.

This release serves as a baseline milestone summarizing the evolution of the FANUC FOCAS OPC UA Server and the platform as a whole across previous releases. Starting with version 3.13.0, all subsequent releases are published on this website.

Previous releases significantly expanded the capabilities of the FANUC FOCAS driver. Support was added for key FOCAS APIs, including advanced diagnostics and parameter access, the CNC model detection logic was improved, particularly for the FANUC 0i series, and overall reliability was enhanced by resolving issues that could limit data acquisition. Support for Linux and Docker was also introduced and refined, while the build infrastructure was unified and platform-specific type limitations were eliminated.

At the platform level, numerous improvements were made to increase stability and reliability. These include graceful service shutdown, improved resource management, memory management fixes, optimized build and CI/CD pipelines, and enhanced long-term stability of the OPC UA server during continuous operation.