Siemens Aktiengesellschaft

Dieter Klotz

Dieter Brückner

Franz-Josef Götz

Jürgen Schimmer

Karl-Heinz Krause

Dieter Brueckner

Franz-Josef Goetz

Juergen Schimmer

Johann Arnold

Joachim Lohmeyer

Herbert Bernecker

Wolfgang Werner

Martin Kiesel

Karl Weber

Matthias Scheffel

Michael Franke

Albert Tretter

Hermann Angst

Wilhelm Diesch

Patrik Sieberling

Christiane Müller

Gerhard Scheithauer

Matthias Schweikart

Franz Josef Götz

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

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.

Network arrangement and method prioritization of real-time telegrams in a convergent network

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.

Communication device and method for redundant message transmission in an industrial communication network

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.

Redundant communication in a communication system

A destination node in a data network for transmission of real-time data by a data telegram, the data telegram including an identification, data and a transfer status, is provided. The destination node includes a device for receiving a first data telegram, a device for storing the data of the first data telegram and an assigned timer value, a device for receiving a second data telegram and a device for replacing the stored data of the first data telegram, wherein the stored data of the first data telegram is replaced with data of the second data telegram. Further, a method and a non-transitory storage medium are provided.

Replacement messages for identifying and preventing errors during the transmission of realtime-critical data

The invention relates to a method for data transmission in a serial bus system comprising a control unit and bus users. The method comprises steps: receiving a first data telegram by a bus user from the control unit, wherein the data telegram has a data field containing output data; reading out the data field intended for the bus user from the first data telegram; preparing input data as a response to the read out data field; checking whether a predefined criterion is met, wherein if the criterion is met a second data telegram is newly generated and the input data is attached to the second data telegram and if the criterion is not met, the input data is attached to a data telegram previously received from another bus user; and transmitting the input data to the control unit by the second data telegram.

Method for data transmission

The invention relates to a switching node comprising a dynamic address table in a data network, in addition to a method for creating a dynamic address table of this type for a switching node. The method comprises the following steps: receipt of a first data message with a source address at a port of the switching node; entry of the source address, details of the port and a counter initial value in a line of the address table that is assigned to the source address as the target address, whereby the current counter value indicates the validity of the entry and the current counter value is modified, if a second data message with the source address as the target address is received and the entry is valid.

Method for creating a dynamic address table for a switching node in a data network and a method for transmitting a data message

A method for transmitting real time data packets in a cyclic communication system, each transmission cycle having a first partial cycle (IRT-Z) for a real time communication portion and a second partial cycle (NRT-Z) for a non-real-time communication portion. The method includes determination () of a cycle number and processing of a transmission sequence of real time data packets in the first partial cycle. The transmission sequence is composed of one or more partial sequences (1, 2, 3, 4, 5), and the composition depends on the cycle number.

Method for transmitting real-time data messages in a cyclic communications system

A method is specified for the operation of an automation device provided for the receiving of telegrams together with such an automation device, which is distinguished by the fact that the automation device manages a resource pool for telegrams which are arriving or received, that the automation device distinguishes between active and new communication relationships with a remote communication participant and that for each new communication relationship a free resource is selected from the resource pool and thereafter is used for this communication relationship, which thereby becomes an active communication relationship.

Method for operating an automation device and automation device

A processing of consistent data sets by asynchronous application of a subscriber in an isochronous, cyclical communication system is provided. Accordingly, by connecting a communication memory and a consistency, transmission and reception buffer, copying processes leading delay can be kept to a minimum.

Method for processing consistent data sets by an asynchronous application of a subscriber in an isochronous, cyclical communications system

The invention relates to a method for transmitting real time-critical data using data messages in a data network. The data messages have an identification, useful data and a transfer status. According to the inventive method, data messages comprising errors are replaced by replacement messages that have the same structure as the data messages. The replacement message has the same identification as the data message to be replaced and is thus forwarded via the switching node, which would have been used to route the error-free data message. The replacement message can contain details of the type of transmission error.

Replacement messages for identifying and preventing errors during the transmission of real time-critical data

The invention relates to a method for transmitting a data telegram from a non-real-time domain to a real-time domain, comprising the following steps: generation of a non-real-time data telegram comprising a useful data zone, the data telegram containing a real-time or a non-real-time identifier in addition to a data telegram identifier (identifier i) in the useful data zone thereof when the real time identifier is provided; monitoring of the non-real-time data telegram for the presence of a real time identifier by the coupling unit if the real-time identifier is provided; transmission of the useful data and real-time identifier (identifier i) from the useful data zone of the non-real-time data telegram to a user interface of the coupling node; storage of the useful data in a storage zone of a communication memory which is associated with the identifier.

Method for transmitting a data telegram between a real-time domain and a non-real-time domain and a coupling unit

A method for the transmission of data messages in a switched cyclical communication system () with a linear or ring arrangement of the users. Real-time critical data messages are transmitted in a first segment () of a transmission cycle (), without the need to first plan the send and receive instants in the forwarding users, such that the chronological start () of the first segment () of a transmission cycle () is guaranteed by all users in all transmission cycles through monitoring. The duration of the first segment () of a transmission cycle () can be fixedly specified or automatically adjusted using a timeout procedure.

Method for transmission of data telegrams in a switched cyclical communication system

The method carrying out permanent redundant transmission of data messages in disjunctive paths, such that circulating data messages can be reliably identified and destroyed. The method includes splitting a redundant message into two data messages in the respective branching point in a transparent manner. The method further includes causing no additional load for the receiver of the two identical messages by, for instance, allocating a current cycle number to the received data message in a cyclic communication system (). This can also be ensured in a non-cyclic communication system by means of software processing, for instance, by processing the header identifier of the data messages. In particular, the behavior of the communication system () with respect to 'learning' the addresses in the individual users (), more particularly the switches, is not altered for the remaining non-redundant data traffic.

Growing community of inventors

Fürth, Germany

Dieter Klotz