Abstract: 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.

Abstract: 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.

Abstract: A method and system is provided for data communication in a network, with one or more nodal for data transfer between a plurality of data-providing transmitters and a receiver receiving the data provided by the plurality of transmitters via a stream with which, to establish the stream, the receiver issues a listener advertise message for the stream, that comprises a stream description, and the listener advertise message is transmitted to at least one nodal point in the network.

Abstract: 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.

Abstract: 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 effici

Abstract: In automation-engineering installations, there is a need to exchange process information between different devices. For this, OPC Unified Automation (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.

Abstract: A control apparatus includes a first apparatus for ascertaining at least one primary data path between a first and a second data terminal device, which are connected to a data network, a second apparatus for selecting one of the ascertained primary data paths and a third apparatus for ascertaining at least one alternative data path between the first and the second data terminal device, which alternative data path has no common transmission links with the selected primary data path. A corresponding network node and a corresponding method for operating the apparatus are also described.

Abstract: 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.

Abstract: For redundant message transmission in an industrial communication network having an arbitrarily meshed network topology, mutually independent paths are ascertained for a communication link that is redundant at least in sections between two network nodes within the industrial communication network, where the mutually independent paths comprise separate network nodes of a single communication network, and messages with duplicate identifiers are interchanged between transmission and reception units of communication devices of the industrial communication network in accordance with forwarding rules that correspond to the ascertained paths.

Abstract: A control apparatus includes a first apparatus for ascertaining at least one primary data path between a first and a second data terminal device, which are connected to a data network, a second apparatus for selecting one of the ascertained primary data paths and a third apparatus for ascertaining at least one alternative data path between the first and the second data terminal device, which alternative data path has no common transmission links with the selected primary data path. A corresponding network node and a corresponding method for operating the apparatus are also described.

Abstract: 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 effici

Abstract: A communication device for an industrial communication network which can be operated in a redundant manner comprises a first and a second transmitting and receiving unit that transmit data packets in a bumpy or bumpless manner inside the industrial communication network and are selectively changeable over to a bumpy or bumpless transmission mode. An evaluation unit is connected to the first and/or second transmitting and receiving unit(s) and detects data packets to be transmitted in the bumpy or bumpless manner inside the industrial communication network. Redundancy handling and filter units for received redundant data packets are deactivated when a data packet to be transmitted in the bumpy manner is detected. A memory unit is assigned to the first and/or second transmitting and receiving unit(s) and buffers at least one data packet to be transmitted in the bumpy manner during a predefined period of time in the bumpy transmission mode.

Abstract: A method for synchronizing an operating clock with a time clock in an automation network comprising a plurality of sync slaves that are to be coordinated and a time sync master, wherein the plurality of sync slaves are synchronized with respect to the time clock by the time sync master, and wherein the plurality of sync slaves derive their operating clock from the time clock.

Abstract: For redundant message transmission in an industrial communication network having an arbitrarily meshed network topology, mutually independent paths are ascertained for a communication link that is redundant at least in sections between two network nodes within the industrial communication network, where the mutually independent paths comprise separate network nodes of a single communication network, and messages with duplicate identifiers are interchanged between transmission and reception units of communication devices of the industrial communication network in accordance with forwarding rules that correspond to the ascertained paths.

Abstract: A method for synchronizing the operating clock and the timing clock of a subordinate domain of an automation network, wherein sync slaves are synchronized by a clock sync master with respect to an operating clock, a clock sync master forms part of a subordinate domain, a single synchronization message serves to synchronize the sync slaves with respect to their respective operating clock and timing clock, wherein the method comprises providing a notification of the difference between the timing clock and the operating clock using the synchronization message, and accepting this difference into the synchronization message as additional information.

Abstract: A method for redundant communication in a communication system having a plurality of communication networks connected to one another by at least one node, wherein data that originates from a first communication network is prevented from being transmitted back from the second the communication network into the first communication network as a result of information that is predefined before the transmission.

Abstract: A method for controlling runtime behavior of processes of an automation system is provided. A priority is assigned to each of the processes, wherein an operating system of the automation system assigns runtime to the processes as a function of their priority. A scheduling service monitors starting and ending of all processes, wherein the highest priority available in the operating system is assigned to the scheduling service. Metadata is assigned to at least one process, the data including at least one rule on the priority of the process. The scheduling service analyzes the metadata and registers the process for monitoring when starting a process to which metadata is assigned, wherein the scheduling service monitors the registered processes for compliance with the at least one rule per process, and wherein the scheduling service modifies the priorities of the registered processes, the at least one rule of which is in non-compliance, according to the rule.

Abstract: A communication device for an industrial communication network which can be operated in a redundant manner comprises a first and a second transmitting and receiving unit that transmit data packets in a bumpy or bumpless manner inside the industrial communication network and are selectively changeable over to a bumpy or bumpless transmission mode. An evaluation unit is connected to the first and/or second transmitting and receiving unit(s) and detects data packets to be transmitted in the bumpy or bumpless manner inside the industrial communication network. Redundancy handling and filter units for received redundant data packets are deactivated when a data packet to be transmitted in the bumpy manner is detected. A memory unit is assigned to the first and/or second transmitting and receiving unit(s) and buffers at least one data packet to be transmitted in the bumpy manner during a predefined period of time in the bumpy transmission mode.

Abstract: A method for synchronizing the operating clock and the timing clock of a subordinate domain of an automation network, wherein sync slaves are synchronized by a clock sync master with respect to an operating clock, a clock sync master forms part of a subordinate domain, a single synchronization message serves to synchronize the sync slaves with respect to their respective operating clock and timing clock, wherein the method comprises providing a notification of the difference between the timing clock and the operating clock using the synchronization message, and accepting this difference into the synchronization message as additional information.

Abstract: A method for synchronizing an operating clock with a time clock in an automation network comprising a plurality of sync slaves that are to be coordinated and a time sync master, wherein the plurality of sync slaves are synchronized with respect to the time clock by the time sync master, and wherein the plurality of sync slaves derive their operating clock from the time clock.