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2024-06-16 - 07:31

The OSADL OPC UA PubSub over TSN Project

Project phase #1 - Project phase #2 - Project phase #3 - Project phase #4 - Project phase #5 - Presentations - Project overview

Project phase #1 (completed)

In addition to the standardization of the protocols, to gain general acceptance of this technology it also is necessary to provide a freely accessible software implementation that can be used in an unrestricted way. Since this currently is not not the case, the Open Source Automation Development Lab (OSADL) in collaboration with Indian system integrator Kalycito Infotech has launched a related Open Source software project that is funded by Kalycito and an OSADL project group. The already developed and further to be enhanced software is based on the OPC UA implementation that was created in the open62541 project ( The Fraunhofer Institute of Optronics, System Technologies and Image Processing (Fraunhofer IOSB) has taken over the activity of programming the OPC UA enhancements; this was a logical decision, since Fraunhofer IOSB already played an important role in the development of the original open62541 project.

Demonstrator at Embedded World 2018

Flyer distributed at the OSADL booth of the Embedded World 2018

The currently available results of the named project will be presented at the OSADL booth of Embedded World 2018 (hall 4, booth 168) in a demonstrator with several TSN nodes and concurrent real-time and non-real-time communication. The demonstrator contains a variety of TSN hardware and software implementations of various vendors that communicate to each other using a unified OPC UA implementation and provides the following features for the first time under an Open Source license that can be used in proprietary products:

  • Brokerless OPC UA Pub/Sub via IP multicast and the binary message encoding format according to draft of part 14 of the OPC UA specification
  • Integration of the publisher in a regular OPC UA server with additional real-time interrupting
  • Implementation of the subscribers as standalone software
  • Intel Atom/I210 by TQ-Systems
  • FPGA-TSN by Analog Devices
  • FPGA-TSN Cyclone V SoC by Intel/Altera
  • FPGA-TSN Zync SoC by Xilinx
Software development and project management
  • Fraunhofer IOSB
  • Kalycito Infotech
  • Open Source Automation Development Lab (OSADL)
Partial funding and other contributions through the following participants of the OSADL project
  • Heidelberger Druckmaschinen
  • Kontron
  • Linutronix
  • Pilz
  • SICK
  • TQ-Systems

Letter of Intent (project phase #1, completed)


Letter of Intent V5 (project phase #1, completed)

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