Siemens Aktiengesellschaft

Siemens Aktiengesell Schaft

Frank Volkmann

Thomas Talanis

Christian Hock

Sven Kerschbaum

Markus Erlmann

Stephan Höme

Karl-Heinz Deiretsbacher

Franz-Josef Götz

Jürgen Schmitt

Thomas Tröster

Jörn Peschke

Roland Heymann

Stefan Elsterer

Thomas Bauer

Heinz-Christoph Schmolka

Marcus Sebald

Christian Strömsdörfer

Harald Albrecht

Ronald Lange

Joachim Feld

Thomas Fischer

Marcel Kiessling

An Ninh Nguyen

Matthias Heller

Rolf-Dieter Pavlik

Wolfgang Riedl

Herbert Grieb

Marcel Kießling

Benjamin Kohler

Hendrik Gerlach

Martin Kunz

Michael Wieczorek

Marc Holz

Gernot Rossi

Jürgen Haardörfer

Thomas Banik

Reiner Plaum

Konstantin Jung

Gerald Kaefer

Jens Grebner

Bernd Schönmüller

Josef Braun

Thomas Edelmann

Stefan Roth

Jochen Balduf

Edgar Frank

Jörg Middel

Sebastian Wittig

Rainer Förtsch

Stefan Werner

Wolfgang Gutermuth

A system for data transmission between a client device, a server device and a plurality of automation devices, wherein the server device includes a descriptive representation of each of the plurality of automation devices, wherein the server device includes a server instance, which server instance is configured to load one of the descriptive representations based on a hostname identifying one of the plurality of automation devices, and wherein the server instance is configured to transmit data from the automation device to a client application on the client device based on the loaded descriptive representation of the automation device.

System for data transmission between a client device, a server device, and a plurality of automation devices

A method for configuring at least one OPC UA PubSub subscriber in an in particular industrial network, in which a) a virtual address space is provided for the at least one subscriber on a configuration module that is separate from the at least one subscriber, b) a configuration for the at least one subscriber is performed and/or a configuration already existing for the at least one subscriber is changed in the virtual address space of the at least one subscriber, c) the configuration module converts the configuration and/or configuration change into at least one PubSub message, d) the at least one PubSub message is transmitted to the at least one subscriber, and e) the at least one subscriber is configured according to the at least one PubSub message. In addition, the invention relates to an automation system, a computer program and a computer-readable medium.

Method for configuring an OPC UA PubSub subscriber, automation system, computer program and computer-readable medium

A control method, device, computer program and a computer-readable medium and method for data communication in an industrial network, wherein a stream is created between at least two stream subscribers, where resources are reserved on at least one node point, particularly bridges and/or switches between the at least two stream subscribers, and subsequently data is transmitted between the at least two stream subscribers, via the stream, and at least one subscriber of the stream interrupts the emittance and/or reception of data via the stream and resources that are reserved on at least one node point for the at least one subscriber of the stream are released for use for a data transmission that is lower priority than the data transmission via the stream, and where the reservation of the resources being maintained for the at least one subscriber.

Method for data communication in an industrial network, control method, device, computer program and computer-readable medium

The invention describes a transmission device having a (TCP/IP) protocol stack (S, S'), which is designed for the transmission of data (D) in a time-sensitive network (TSN). The transmission device comprises at least one TSN-compliant virtual Ethernet interface (&#x2032;) and an associated TSN control unit (&#x2032;). The at least one TSN-compliant virtual Ethernet interface (&#x2032;) is designed to send and/or receive a TSN-compliant data stream (&#x2032;) in a physical layer () of the TCP/IP protocol stack (S, S&#x2032;). The TSN-compliant data stream (&#x2032;) can be configured and/or parameterised by means of the associated TSN control unit (&#x2032;).

Data transmission in time-sensitive data networks

A method is provided which enables industrial communication via the TSN protocol by means of sockets. Owing to the described method, the possibility of communicating with the socket programming known to the programmer via TSN streams is provided. As a result, simple use of the new TSN quality for simple Internet (IP) programming is possible. Existing applications can easily be expanded for TSN and can therefore benefit from the robustness of TSN in a simple manner. In addition, parallel operation is possible; the same mechanism is always used.

Method for industrial communication via TSN

A method for operating a server device in a system is disclosed. The server device determines a current process value of at least one process parameter of a process controlled by the system and transmits the determined current process values to a plurality of client devices in the system for each process parameter or a subset thereof via a data network. According to the invention, the server device forms a variable group for at least one process parameter which is to be transmitted to more than one of the client devices. The server device then combines in each case the current process values of the at least one process parameter in the variable group at the different transmission times to form a single multi-target message and at the different transmission times to form a single multi-target message and transmits the multi-target message to a group address in the data network.

Provision of process values in a process installation

In automation-engineering installations, there is a need to exchange process information between different devices. For this, OPC Unified Architecture (OPC UA) from OPC Foundation has become established as a standard protocol. However, rather than transmit requested OPC-UA subscriptions via the conventional OPC-UA session channel, the invention sets up a separate TSN data communication by means of which that subscription information is transmitted.

Providing process values in a process system having a real-time requirement

An OPC UA session is interpreted as a single transaction according to the invention. In this case, a transaction means that all service calls, apart from the abovementioned calls, are initially only simulated and are not executed and the execution of the service calls is shifted to the termination of the transaction. Each operation inside a session is formally checked and then simulated. The simulated result or the result of the formal check is immediately sent to the client. The client therefore receives a preview of the result of the operations. If the client determines that one of the operations carried out would not lead to the desired result, the client can reject the operations. If the client wants the set operation to be carried out, the client terminates the current session.

Method and apparatus for expanding transactions in OPC UA

A method and apparatus for energy-optimized data transmission by OPC UA protocol in radio networks is disclosed. When OPC UA communication is operated in a mobile device, e.g. as mobile access to part of a plant for maintenance, monitoring, parameterization, transmission is frequently implemented by the OPC UA's own request-response based communication behavior. Since the device is rarely able to switch off the transmitter, the battery of the device is very quickly discharged. This poses a problem, particularly in the case of devices that are intended to respond promptly to infrequent warnings or events. However, when a client device is intended to provide notification in relation to one event only, the previous polling, i.e. the periodic interrogation is dispensed with and an alternative notification through means inherent in the mobile network is used. This method uses, for example, a mobile push service supplied by the network provider.

Method and apparatus for energy-optimized data transmission using the OPC UA protocol in radio networks

A method for providing clients with access to a service of a server in a network using an OPC-UA, the server service making available varying values of at least one variable to the clients, wherein a client registers for the server service by sending a subscription request for the server service to the server which sets up a subscription structure including a unique subscription ID as well as a TCP/IP multicast group associated with the subscription structure and including a unique multicast address, and there server communicates the multicast address and the subscription ID to every client submitting a subscription request to register for the server service, the server additionally sends each change in value of each variable of the server service to the multicast address over a network via a multicast message so that all clients registered for the server service receive the same multicast message.

Providing clients access to a server service using an OPC unified architecture (OPC-UA)

A method for optimizing repeated write access by a client to at least one variable in a server via OPC UA, wherein a call method for repeated write access is provided on the server, the call method includes notification of an access time interval and at least one variable for the repeated write access, the client calls the call method on the server, the server is notified of an access time interval and the at least one variable for the repeated write access in the process, where the server creates a data structure for the repeated write access and maintains said data structure during the access time interval, values of the at least one variable which are to be written are transmitted to the server by the client during the access time interval, and the server allocates each value transmitted by the client to the associated variable.

Write access to a variable in a server

A method for communication between two clients via a server in a network using OPC Unified Architecture (OPC-UA), wherein a virtual server object that provides a server functionality to a first of two clients is implemented in the server by making available to the first client a virtual address space in an address space of the server, and a process for generating and modifying virtual server nodes in said virtual address space. The server allows the second client to access virtual server nodes in the virtual address space and informs the first client each time that the second client accesses a virtual server node in the virtual address space.

Communication between two clients via a server

A method for controlling an electric machine or electric unit by actuating a component of the electric machine or unit using a predicate and by automatically examining the component in regard to the performance of the predicate to permit examination of an automated system for possible errors in a simply manner, wherein the predicate contains an expected value of a (physical) quantity of the component, and wherein in the examination of the component, a check is performed to determine whether the expected value actually arises when the predicate is performed such that erroneous situations can be detected by a runtime system without explicit programming being necessary therefor.

Method for controlling an electric machine and control device

A method for interchanging data between two devices in a network which utilizes a communication protocol with an interface based on an Object Linking and Embedding for Process Control Unified Architecture (OPC-UA) standard to interchange the data, wherein the communication protocol includes a priority allocation function which can allocate to the data at least two different priority values, and the data are interchanged based on the allocated priority values, such that the data interchangeable between the two devices in a predetermined period of time with a prescribed probability.

Method and apparatus for interchanging data between two devices in an automation network

An electronic display apparatus comprising a control device and an electronic display panel that can be turned off by the control device. In order to support an energy-saving state in which information can continue to be displayed at least to a certain extent, an electrochromic display is additionally provided that is switchable into different display states by the control device. The invention furthermore relates to an installation appertaining to automation technology, and to a method for operating an electronic display apparatus.

Electronic display apparatus, installation pertaining to automation technology, and method for operating an electronic display apparatus

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Nürnberg, Germany

Frank Volkmann