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the official daily 2020 ● sps connect 3 Messe Dienstag 24 November Aktuell Whats about Open Source license? OPC UA PubSub via TSN as Open Source License This is the goal that Fraunhofer IOSB Kalycito and OSADL have been pursuing since SPS 2018 with the open62541 org project How far has the work progressed? Dr Carsten Emde provides an update Photo OSADL Dr Emde how are you progressing with the open source implementation of OPC UA PubSub via TSN? Why is it taking so long? Dr Carsten Emde We are often asked about the latter in particular Many suspect that there are some slowing down forces at work here But this is definitely not the case! Its just that when a proprietary software is developed by a company the development work often takes six years in private and the project work is not published until the final year With an Open Source project like ours however the public is involved from the very beginning And then everyone thinks that the development took seven times longer than usual So what is available after two years? Iwould like to answer this question separately for OPC UA PubSub and TimeSensitive Networking Regarding the open source implementation of OPC UA PubSub we have made remarkable progress Among other things the OPC Foundation has certified an OPC UA server developed with the help of this software according to the Micro Embedded Device Server profile Furthermore PubSub server and client have been developed and successfully tested on different architectures and systems The development of this software in its current implementation can already be used productively Several larger companies active in the automation environment have already decided to use this implementation And what about Time Sensitive Networking? Most of the realization of TSN is done in hardware Progress in this area is therefore highly dependent on the availability of suitable hardware components OPC UA PubSub via TSN is completely supported by the Intel network adapter I210 starting with Linux kernel 4 19 The successor I225 from the same manufacturer has just been released and is currently FAULHABER Applikationen Dynamik und Kraft Eine Frage der Technik Mit FAULHABER Antriebssystemen für Prothesen verschieben Sie die Grenzen des Möglichen für Menschen mit Handicap faulhaber com p bxt de WE CREATE MOTION Dr Carsten Emde managing director of OSADL dispels rumors There are no brakemen at work who want proprietary protocols which have been declared dead to live longer than expected being adapted But for the development of a manufacturerindependent kernel interface we need more hardware also from other manufacturers This may still take a while Can we already see the results somewhere? The OSADL QA farm on our website which was originally set up to determine and make publicly available realtime behavior longterm stability and other key performance indicators of embedded systems that are important for production systems has now been expanded to test network connections peertopeer and star topology with OPC UA PubSub via TSN The longterm measurements performed there concern the quality of time synchronization between network and system as well as the maximum jitter in roundtrip measurements The measurement results are publicly available on the website Meinrad Happacher