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Gunnar Lessmann

Bio: Gunnar Lessmann is an academic researcher from Phoenix Contact. The author has contributed to research in topics: PROFINET & Communications system. The author has an hindex of 7, co-authored 34 publications receiving 131 citations.

Papers
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Proceedings ArticleDOI
03 Oct 2008
TL;DR: A model-driven development approach has been adopted to verify the concept by using simulation technique and the description of the complete network topology is realized with a minimum amount of data and includes a systematically propagation towards the topology manager.
Abstract: This paper describes a novel method for layer-2 auto-configuration of realtime Ethernet networks. Our approach is able to roll out local MAC addresses to the involved devices as well as to discover the topology automatically on top of LLDP. The description of the complete network topology is realized with a minimum amount of data and includes a systematically propagation towards the topology manager. A model-driven development approach has been adopted to verify the concept by using simulation technique.

18 citations

Patent
16 Jan 2008
TL;DR: In this article, a method for the optimized transmission of data between a control device and a plurality of field devices which are connected to one another via an IP-based communication network, the data transmission being controlled using a Profinet protocol is presented.
Abstract: The invention relates to a method for the optimized transmission of data between a control device and a plurality of field devices which are connected to one another via an IP-based communication network, the data transmission being controlled using a Profinet protocol. The invention also relates to a control and data transmission installation (10) which is particularly suitable for carrying out the method. The control and data transmission installation (10) can be used to transmit the data which is to be transmitted from a control device (20) to a group of field devices (30, 40, 50) in a single total frame divided into data fields and to transmit the data which is to be transmitted from a multiplicity of field devices (30, 40, 50) to a control device (20) likewise in just one common total frame divided into data fields. This allows the transmission rate to be optimized in comparison with standard - Profinet - frames.

18 citations

Patent
Gunnar Lessmann1
08 Feb 2013
TL;DR: In this article, the authors proposed a PROFINET adapter having at least one first Ethernet interface and one second Ethernet interface (512) for coupling a subscriber to a P2P network.
Abstract: The present invention relates to a PROFINET adapter having at least one first Ethernet interface (511) and one second Ethernet interface (512) for coupling a subscriber to a PROFINET network. The PROFINET adapter (50) comprises a third Ethernet interface (55), a number of at least one application interface (53, 54) and a separating filter (56). The third Ethernet interface (55) is designed at least to interchange Ethernet-based data packets. The separating filter (56) is connected to the switch (51), the PROFINET protocol stack (52), the application interfaces (53, 54) and the third Ethernet interface (55) and is designed to divide real-time data packets and non-real-time data packets according to a particular configuration and to transmit said data packets between the switch and the application interface and/or the third Ethernet interface.

16 citations

Patent
07 Jul 2011
TL;DR: In this article, a real-time-critical data message is transmitted by a conventional standard Ethernet communication device (10) to a PROFINET IRT system (40) with first communication devices (50, 60) for isochronous transmission.
Abstract: The invention relates to a communication system (5) which has a PROFINET IRT system (40) with first communication devices (50, 60) for isochronous transmission. In order to also allow a conventional standard Ethernet communication device (10) to transmit real-time-critical data via the PROFINET IRT system (40), a specific IRT bridge device (30) is provided. The bridge device (30) has a timer (34), which is synchronized with the timers (57, 67) of the first communication devices (50, 60) in time. Furthermore, a device (31) is provided for evaluation of the transmission time of a real-time-critical data message which is received from the communication device (10), and a control device (33) is provided which controls the passing on of the associated real-time-critical data message to at least one second communication device (50, 60) depending on the evaluated transmission time.

10 citations

Patent
23 Jan 2012
TL;DR: In this paper, a port-independent, topologically predefined real-time network is introduced which provides the compliance with the at least similar safety standard as the PROFInet IRT while dispensing with the target specification of a network interface being used.
Abstract: For an industrial network, for example a PROFInet IRT net for a motion control or in general a network with an isochronous time structure for transmitting time-critical data, it is the object according to the invention to considerably simplify the handling during installation or during maintenance and device replacement. For this purpose, a port-independent, topologically predefined real time network is introduced which provides the compliance with the at least similar safety standard as the PROFInet IRT while dispensing with the (target) specification of a network interface being used. The apparatus according to the invention is illustrated.

9 citations


Cited by
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Journal ArticleDOI
11 Jan 2019
TL;DR: It is anticipated that OPC UA TSN will reveal itself as a game changer in the field of industrial automation, being a candidate for establishing a holistic communication infrastructure from the sensor to the cloud.
Abstract: The industrial communication market is dominated by Ethernet-based fieldbus systems. Although they share similar requirements and market segments, their implementations and ecosystems differ considerably. As a result, end customers and device manufacturers are faced with a multitude of technologies that need to be produced, run, diagnosed, maintained, and kept in stock. Although the availability of products and services is largely satisfactory, dealing with multiple solutions generates high costs and limits IoT capability. This paper introduces Open Platform Communication Unified Architecture Time-Sensitive Networking (OPC UA TSN) as a new technology and presents the current view. This time, the industrial prospects of fulfilling industrial communication requirements while leveraging the cost benefits of standard Ethernet hardware in the midterm are in reach. We anticipate that OPC UA TSN will reveal itself as a game changer in the field of industrial automation, being a candidate for establishing a holistic communication infrastructure from the sensor to the cloud.

138 citations

Journal ArticleDOI
TL;DR: This work introduced three building blocks as key components for a generic RTE system, these includes topology-based addressing, optimized datagram transfer, and synchronous scheduling.
Abstract: After the introduction of fieldbus technology, real-time Ethernet (RTE) systems now form the second generation of industrial communication systems (2G ICS). A lot of different approaches for RTEs appeared during the last years, most of them optimized for specific use cases or application domains. From a user's perspective, the transition from a proved fieldbus system to a RTE only makes sense, if multiple system properties are improved significantly in comparison to the state-of-the-art. In order to address such main requirements of machine builders, we introduced three building blocks as key components for a generic RTE system, these includes topology-based addressing, optimized datagram transfer, and synchronous scheduling.

79 citations

Patent
James S. Hiscock1
30 Jan 2013
TL;DR: In this article, the authors propose a method for determining a desired topology of a network, comparing the desired topologies to a current topology, and then assigning role assignments and parameter assignments to network components in the current network topology.
Abstract: Controlling a topology of a network includes determining a desired topology of a network, comparing the desired topology to a current topology of the network, and controlling the current topology with role assignments and parameter assignments to network components in the current topology to implement the desired topology with the current network components.

56 citations

Proceedings ArticleDOI
29 Jul 2013
TL;DR: This paper presents a two-step architecture for the autoconfiguration of real-time Ethernet (RTE) systems based on the OPC Unified Architecture (OPC-UA), and a procedure to autoconfigure modular IO-Devices is introduced.
Abstract: In the future, production systems will consist of modular and flexible production components, being able to adapt to completely new manufacturing processes. This requirement arises from market turbulences caused by customer demands, i. e. highly customized goods in smaller production batches, or phenomenon like commercial crisis. In order to achieve adaptable production systems, one of the major challenges is to develop suitable autoconfiguration mechanisms for industrial automation systems. This paper presents a two-step architecture for the autoconfiguration of real-time Ethernet (RTE) systems. As a first step, an RTE-independent device discovery mechanism is introduced. Afterwards, it is shown how the parameters of an RTE can be configured automatically using Profinet IO as an exemplary RTE system. In contrast to the existing approaches, the proposed discovery mechanism is based on the OPC Unified Architecture (OPC-UA). In addition, a procedure to autoconfigure modular IO-Devices is introduced.

55 citations

Patent
10 Dec 2012
TL;DR: In this article, a near field communication (NFC) antenna in a mobile device is used to wirelessly charge a battery in the mobile device by placing the mobile devices on, or in very close proximity to, a charging station that emits an electromagnetic field.
Abstract: A near field communication (NFC) antenna in a mobile device is used to wirelessly charge a battery in the mobile device by placing the mobile device on, or in very close proximity to, a charging station that emits an electromagnetic field. An induced current from the NFC antenna is detected that is above a predetermined threshold for longer than a predetermined duration. The induced current is used to charge the battery in the mobile device.

41 citations