All about the community project for a standard Open Source communication stack for real-time Ethernet connections of the future
After successfully completing earlier phases of the OSADL project for OPC UA PubSub over TSN, the open62541 software provided an SDK that allowed to set up a modern OPC UA server which is now certifiable by the OPC Foundation based on the "Standard 2017 UA Server Profile". This software is under an Open Source license that can be combined with proprietary components.
In addition and also for the first time, a PubSub implementation was available allowing Virtual Local Area Network and other Time-Sensitive Networking components to be used to enable real-time communication over Ethernet. Another milestone was the implementation of secure PubSub with encryption and support for TPM. Furthermore, it is now possible to dynamically load the information model at runtime, to configure the server via a JSON file and there are recommendations for using the SDK on resource-constrained devices.
Due to the interest of SDK users and project participants, it was decided to plan phase 5 of the project. To cover the needs of the community as precisely as possible in this phase as well, a questionnaire was carried out. The topics that received the most votes were:
- open62541: Full XML datatype de-/encoding
- open62541: Implementation of a Binary / ROM-based nodestore
- Creating up-to-date and easy-to-use PubSub over TSN examples and building a demonstrator
- open62541: Enhancement and improvement of the PubSub FastPath
After the questionnaire campaign was completed, a letter of intent for project phase 5 was prepared and published in February 2024. The call for participation is still open.
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