Siemens Aktiengesellschaft

Siemens Enterprise Communications Gmbh & Co. Kg

Franz-Josef Götz

Jürgen Schmitt

Dieter Klotz

Feng Chen

An Ninh Nguyen

Dieter Brückner

Jürgen Schimmer

Marcel Kiessling

Marcel Kießling

Frank Volkmann

Günter Steindl

Joachim Lohmeyer

Hermann Angst

Johann Arnold

Chongning Na

Harald Albrecht

Thomas Talanis

Dragan Obradovic

Karl-Heinz Krause

Matthias Scheffel

Michael Kasper

Michael Franke

Christian Hock

Ruxandra Scheiterer

Stephan Schüler

Christian Strömsdörfer

Jürgen Haardörfer

Herbert Bernecker

Gerhard Scheithauer

Rainer Schiekofer

Rainer Förtsch

Marcel Kieβling

Rolf Knoerzer

Christiane Müller

System and method for providing time-critical control applications via flow control components that are each loadable into and executable by a flow control environment formed via a server device, wherein the control applications each periodically determine, from periodically acquired measured and/or state variables, manipulated variables for a process to be controlled or regulated, a plurality of mutually redundant flow control components are executed in parallel with one another, the mutually redundant flow control components determine the manipulated variables for a respective process cycle that follows a respective acquisition time of the measured and/or state variables when a majority of the mutually redundant flow control components signal error-free presence of the measured and/or state variables for the respective acquisition time, where as an alternative or in addition, the determined manipulated variables are transmitted, together with a sequence number assigned to the respective process cycle, to actuators and/or control units.

Method and system for providing time-critical control applications

Method for synchronizing control applications via a communication network for transferring time-critical data, wherein network infrastructure devices determine, for the forwarding of datagrams associated with selected data streams, respective time delays between a planned transmission time of the datagram and an actual transmission time of the datagram in question, where the selected data streams are assigned to control applications running on communication terminals, and where a beginning of a next end-node-side transfer cycle is determined by a starting-node-side control application based on the time delay determined by a preceding network infrastructure device in question, an accumulated maximum time delay and a transmission time of the datagrams to achieve synchronization between transfer cycles of starting-node-side control applications and transfer cycles of end-node-side control applications.

Network infrastructure device, communication terminal and method for synchronizing control applications via a communication network for transferring time-critical data

Method for data transmission within an industrial communication network, wherein selected datagrams are transmitted within predetermined time intervals, which are synchronized at all network nodes, where a number of network nodes from the respective source network node to the respective target network node is determined for forwarding the selected datagrams in each case, and where the selected datagrams are transmitted during first periodic time intervals having a first protection interval length in the event of a determined number of network nodes corresponding to at least one predefined threshold value and, in contrast thereto, if a determined number lies below the threshold value, then the selected datagrams are transmitted during second periodic time intervals having a second protection interval length, which is shorter than the first protection interval length.

Communication device and method for data transmission within an industrial communication network

A network node, computer program, computer-readable medium and method for fail-safe data transmission in a network, in which data packets are transmitted from a sender to a receiver via redundant paths, upon which resources for the transmission are reserved at participating network nodes utilizing an identifier associated with the relevant path, wherein, if a new path is to be found for at least one of the paths involved, then the previous reservations on all redundant paths are maintained, a new redundant path is determined for the at least one path involved and an attempt is made to reserve resources for the transmission on this new redundant path at the participating network nodes, wherein a new identifier associated with the new path is utilized, and if the new reservations on the at least one new path are successful, then previous reservations on the at least one previous path involved are removed.

Network node, computer program, computer-readable medium and method for fail-safe data transmission

The present disclosure concerns a method of synchronization of data packet transmission (P, P, P) in a network (N), including and/or initiating the acts of: Receiving (S), e.g. from a terminal device (T, T, T) of the network (N), one or more data packets (P, P, P) after a threshold time interval (tt) of a periodic transmission window (RT, BE), wherein the threshold time interval (tt) is arranged at the beginning of said periodic transmission window (RT, BE), and Forwarding (S) the data packet (P, P, P) in a subsequent transmission window (RT, BE), preferably directly after the transmission window in which the data packet (P, P, P) was received, within the threshold time interval (tt) of the transmission window (RT, BE).

Method of synchronization of data packet transmission

A control method, device, computer program, computer-readable medium and method for data communication in an industrial network that includes at least one node point, via a stream, in which resources are reserved on the at least one node point for data transmission between subscribers via the node point, using a reservation protocol, and data is transmitted via the stream, and a data frame is sent from the transmitter to transmit data from a transmitter to receivers, the data frame being formed from a plurality of data subrecords determined for different receivers, and on at least one output port of at least one node point, at least one data subrecord is filtered out of the data frame, and/or data is transmitted from a plurality of transmitters to a receiver via data frames that have a plurality of data subrecords originating from different emitters, on at least one node point.

Control method, device, computer program, computer readable medium and method for data communication in an industrial network

The invention relates to methods and to a device for the modular orientation of an AVB stream. The introduction of a new attribute (L_BRIDGE) into the reservation protocol that has been further developed for TSN allows to better use the existing mechanisms in the Ethernet Standard. To this end, each receiver and each transmitter has to announce himself in the network (already existing for the transmitters).

Method and device for the modular orientation of an AVB stream

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

Sensors of a control system transmit detected cyclical actual states of a technical industrial process to a common central unit via a first protected connection of a first open communication network once within a specified time window. The central unit transmits cyclical control signals commensurate with the actual states to multiple actuators via a second protected connection of a second open communication network once within the specified time window. Each sensor supplies the actual state detected by the sensor to the first open communication network within a respective transmitter-side sub-region within the time window. The central unit receives the transmitted actual states within a respective corresponding receiver-side sub-region within the time window. The transmitter-side sub-regions of the sensors are specified such that the receiver-side sub-regions are disjointed from one another.

Sum stream for actual states and control signals of a distributed control system

The invention relates to a method and to a device that describe a real-time network plan for industrial control and monitoring applications, wherein standard Ethernet switching elements are used for the communication network, in particular on the basis of the new mechanisms according to the IEEE 802.1 TSN Task Group. The sequence plan combines clocked data transfer with the stream reservation concept and thus provides determinism with guaranteed maximum latency and access controls at runtime.

Method for performant data transmission in a data network with, in part, real-time requirements and apparatus for carrying out the method

The disclosure relates to a method and device for time-controlled data transmission in a TSN. A new traffic shaping method is described for time-sensitive data streams. The objective is to offer the same real-time performance and configuration complexity as in the prior art but without the need for time synchronization throughout the entire network. The traffic shaper provides that a data frame that is received by a bridge in a first-time interval is passed by this bridge to the next hop/bridge in the next time interval. Each bridge knows the start time of the time interval that belongs to a particular data stream. Each data frame must contain a so-called 'delay value,' thus a delay value which is measured by each bridge using a local clock that measures the delay time spent by the data frame in the queue at the outgoing port.

Method and device for time-controlled data transmission in a time-sensitive network

Methods and systems are provided for improved data packet transmission in a network bridge. Separate data packets received from a plurality of automation components are aggregated into a single data packet stream. The data packet stream is transmitted to another network node, for example, another network bridge.

Method for data packet transmission and/or reception

In a method for data transmission in a communications network, data frames containing metadata and payloads are transmitted via point-to-point connections between a respective transmitter and a receiver according to a communications protocol. For each point-to-point connection, a transmission list of the data frames to be transmitted from the transmitter to the receiver is kept. In addition, a priority set of at least three interrupt priorities of pairs with differing significance is provided, and the communications protocol permits each data frame of a transmission list to be assigned an interrupt priority and to interrupt a current transmission of a data frame of the transmission list in order to transfer a data frame that is contained in the transmission list and that has been assigned a higher interrupt priority than the currently transferred data frame.

Data transmission in a communications network

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

A method for the prioritization of real-time telegrams in a convergent network, in particular in an industrial network and/or a 'time-sensitive network' (TSN), wherein the convergent network has a central distribution infrastructure and a decentralized distribution infrastructure, and within the convergent network a service sends and/or receives real-time telegrams, and wherein the convergent network has a switching node forming a central network node for connection of central distribution infrastructure and decentralized distribution infrastructure, and which has a coupling port via which the switching node is connected to the decentralized distribution infrastructure, wherein the switching node has central network ports via which the switching node is integrated into the central distribution infrastructure, where real-time telegrams received at central network ports of the switching nodes are assigned a higher priority level than the real-time telegrams received at the coupling ports so as to provide efficient prioritization of real-time telegrams.

Growing community of inventors

Heideck, Germany

Franz-Josef Götz