公开(公告)号：US12101258B2

公开(公告)日：2024-09-24

申请号：US17546907

申请日：2021-12-09

Applicant: Beckhoff Automation GmbH

Inventor： Holger Büttner ,  Dirk Janssen ,  Erik Vonnahme ,  Hans Beckhoff ,  Thomas Rettig ,  Thorsten Bunte ,  Johannes Beckhoff ,  Guido Beckmann

IPC: H04L47/33 ,  G06F11/10 ,  H04L45/00 ,  H04L47/2416

CPC classification number: H04L47/33 ,  H04L45/20 ,  H04L47/2416 ,  G06F11/1004

Abstract: A method is described for operating a communication network with a plurality of subscribers. Data exchange between the subscribers takes place in the form of telegrams, which comprise data sections. The subscribers interpret an end portion of the telegrams as a check value for the absence of errors in preceding data sections. The telegrams are processed in pass-through, so that the telegrams are forwarded to a respective next subscriber while being received. If an error is detected when receiving a telegram, the subscribers send the telegram to the next subscriber with a characterizing data section at the end, so that the telegram has an end portion representing an invalid check value. The telegram is characterized by the characterizing data section, which is part of the end portion, so that the telegram is not to be considered as an initial error but as a subsequent error.

公开(公告)号：US12003613B2

公开(公告)日：2024-06-04

申请号：US17685978

申请日：2022-03-03

Applicant: Beckhoff Automation GmbH

Inventor： Holger Büttner ,  Dirk Janssen ,  Erik Vonnahme ,  Hans Beckhoff ,  Thomas Rettig ,  Thorsten Bunte ,  Johannes Beckhoff ,  Guido Beckmann ,  Karl Weber

IPC: H04L7/10 ,  H04J3/06 ,  H04L7/00 ,  H04L12/40

CPC classification number: H04L7/10 ,  H04J3/0667 ,  H04L7/0012 ,  H04L2012/4026

Abstract: A method for synchronizing time in an Ethernet-based network having a master network subscriber and a slave network subscriber includes sending out a first telegram via the master network subscriber, where the slave subscriber receives the first telegram at a first receipt time value of a local system time and stores the first receipt time value. The method can also include reading out the first receipt time value via the master subscriber, sending out a second telegram by the master subscriber, where the slave subscriber receives the second telegram at a second receipt time value of the local system time and stores the second receipt time value, and reading out the second receipt time value via the master network subscriber. A speed parameter of the local system time can be calculated from the receipt time values via the master network subscriber, and transmitted to the slave subscriber.

公开(公告)号：US20230231736A1

公开(公告)日：2023-07-20

申请号：US18186649

申请日：2023-03-20

Applicant: Beckhoff Automation GmbH

Inventor： Holger Büttner ,  Dirk Janssen ,  Erik Vonnahme ,  Thorsten Bunte ,  Thomas Rettig

IPC: H04L12/40

CPC classification number: H04L12/40006 ,  H04L12/40202 ,  H04L12/40195 ,  H04L2012/421

Abstract: An automation system has a plurality of subscribers including a first master unit, first distributor, second master unit, second distributor, and at least another subscriber unit. First and second transmitting/receiving devices of the first and second distributor are connected via a ring-shaped data bus. In a first mode, the first distributor forwards telegrams received from the first master unit to the first transmitting/receiving device, and forwards telegrams received by the second transmitting/receiving device to the first master unit. The second distributor also forwards first telegrams received by the first transmitting/receiving device to the second transmitting/receiving device. In a second mode, the second distributor forwards telegrams received by the second master unit to the second transmitting/receiving device, and the second distributor forwards telegrams received by the first transmitting/receiving device to the second master unit. The first distributor also forwards telegrams received by the second transmitting/receiving device to the first transmitting/receiving device.

公开(公告)号：US11109215B2

公开(公告)日：2021-08-31

申请号：US16409936

申请日：2019-05-13

Applicant: BECKHOFF AUTOMATION GMBH

Inventor： Pascal Dresselhaus ,  Dirk Janssen ,  Sven Goldstein ,  Timo Bracke ,  Manuel Auster ,  Simon Geldner

IPC: H04W8/00 ,  H04L29/08 ,  H04L12/28 ,  H04L12/58 ,  G06F9/54 ,  H04W48/16 ,  H04L12/24

Abstract: A message transmission between communication subscribers in an automation system is controlled, wherein publisher applications and/or subscriber applications are executed on each of the communication subscribers, wherein the automation system comprises a message broker configured to enter subscriptions for specified topics for designated subscriber applications into a topic tree. In reaction to a message on a specified topic of the topic tree being published by a publisher application of a first of the plurality of communication subscribers on the first communication subscriber offering one or a plurality of services, the message broker determines whether a subscriber application of a second of the plurality of communication subscribers has been entered for the specified topic. If a subscriber application for the specified topic has been entered, the message broker transmits a message to the entered subscriber application of the second communication subscriber that one or the plurality of services are on offer.

公开(公告)号：US20210203720A1

公开(公告)日：2021-07-01

申请号：US17200710

申请日：2021-03-12

Applicant: Beckhoff Automation GmbH

Inventor： Hans Beckhoff ,  Holger Büttner ,  Dirk Janssen

IPC: H04L29/08

Abstract: At least one distribution node with a plurality of input/output interfaces is provided in an automation communication network. Data is exchanged via telegrams with priority levels. The distribution node interrupts transmission of a telegram having a first priority level if a telegram with a second, higher priority level is received. The distribution node terminates the interrupted telegram, which forms a first fragment defined by sending first fragmentation information at the end of the first fragment. A part that has not been sent forms a second fragment. The distribution node stores the second fragment together with second fragmentation information. After sending the telegram having the second, higher priority level, the distribution node sends the second fragment together with the second fragmentation information. A node, for which the telegram having the first priority level is intended, assembles the first and second fragments on the basis of the first and second fragmentation information.

公开(公告)号：US11050585B2

公开(公告)日：2021-06-29

申请号：US16847898

申请日：2020-04-14

Applicant: Beckhoff Automation GmbH

Inventor： Thorsten Bunte ,  Holger Büttner ,  Dirk Janssen ,  Thomas Rettig ,  Hans Beckhoff ,  Erik Vonnahme

IPC: H04L29/06 ,  H04L12/40 ,  H04L12/403 ,  H04L12/46

Abstract: A communications network having a master subscriber M and at least one slave subscriber. At least one distribution node CU1, CU2, CU3, CU4 is provided which has a plurality of input/output interfaces, each of which is connected to a network segment, the master subscriber M arranged in a first network segment M1 and the slave subscriber arranged in a second network segment S1, S2, S3, S4, S5. Data is exchanged between the master subscriber M and the slave subscriber in the form of telegrams initiated by the master subscriber. The telegrams to be sent from the slave subscriber to the master subscriber are each assigned control data containing a forwarding time information when the corresponding telegram is to be output from the distribution node via the input/output interface in the direction of the first network segment comprising the master subscriber, the forwarding time information determined by the master subscriber M.

公开(公告)号：US10484138B2

公开(公告)日：2019-11-19

申请号：US15800669

申请日：2017-11-01

Applicant: BECKHOFF AUTOMATION GMBH

Inventor： Holger Büttner ,  Florian Essler ,  Rainer Hoffmann ,  Dirk Janssen ,  Karl Weber

IPC: H04L1/08 ,  H04L1/18 ,  H04L1/16 ,  H04L12/741

Abstract: A first communication subscriber transmits a first data packet comprising data and an identification character to the second communication subscriber. The first communication subscriber and the second communication subscriber respectively determine a first and a second acknowledgement character on the basis of the identification character. The second communication subscriber transmits a second data packet comprising the second acknowledgement character back to the first communication subscriber. The first communication subscriber can thus check, on the basis of the second acknowledgement character, whether the first data packet arrived at the second communication subscriber.

公开(公告)号：US20180241585A1

公开(公告)日：2018-08-23

申请号：US15959041

申请日：2018-04-20

Applicant: BECKHOFF AUTOMATION GMBH

Inventor： Thorsten Bunte ,  Holger Büttner ,  Erik Vonnahme ,  Dirk Janssen ,  Thomas Rettig ,  Hans Beckhoff

IPC: H04L12/40

Abstract: A communications network comprises a plurality of participants. A first participant transmits a message repeating sequence of N≥2 successive messages to a second participant. An action which can be performed by the second participant is assigned to each message in the sequence. The first participant begins to transmit one of the N messages at N successive transmission times T_I (I=0, . . . , N−1). Each of the N messages contains a field defining a waiting time assigned to the respective message W_I=T_(N−1)−T_I+ΔW_I (I=0, . . . ,N−1), where ΔW_I is a non-negative tolerance time. The second participant selects one message from among the messages in the sequence which are successfully received by the second participant as a useful message, measures a time elapsed since reception of the useful message, and performs the action assigned to the useful message when the elapsed time has reached the assigned waiting time.

公开(公告)号：US20170171096A1

公开(公告)日：2017-06-15

申请号：US15428926

申请日：2017-02-09

Applicant: BECKHOFF AUTOMATION GMBH

Inventor： THORSTEN BUNTE ,  Holger Büttner ,  Erik Vonnahme ,  Dirk Janssen ,  Thomas Rettig ,  Hans Beckhoff

IPC: H04L12/875 ,  H04L12/741 ,  H04L12/927 ,  H04L29/08

CPC classification number: H04L47/56 ,  H04L12/40006 ,  H04L12/4625 ,  H04L45/745 ,  H04L47/625 ,  H04L47/628 ,  H04L47/801 ,  H04L47/822 ,  H04L47/826 ,  H04L49/206 ,  H04L49/351 ,  H04L67/125 ,  H04L2012/4026

Abstract: A distribution node for an automation network comprises at least two input/output interfaces for transmitting and receiving real-time-relevant and non-real-time-relevant data packets, and a switching device connected to the input/output interfaces. The switching device forwards data packets received via an input/output interface via a further input/output interface using a switching table, where the switching table contains at least a data packet identifier and a transmission time in a data transfer cycle for each real-time-relevant data packet. Inter alia, the switching device can detect a data packet identifier on reception of a real-time-relevant data packet, and output the real-time-relevant data packet at the transmission time allocated to the detected data packet identifier in the switching table via an input/output interface as a transmission interface.

公开(公告)号：US20160132446A1

公开(公告)日：2016-05-12

申请号：US14996798

申请日：2016-01-15

Applicant: BECKHOFF AUTOMATION GMBH

Inventor： Thorsten Bunte ,  Holger Buettner ,  Erik Vonnahme ,  Dirk Janssen ,  Thomas Rettig ,  Hans Beckhoff

IPC: G06F13/362 ,  G06F1/10

CPC classification number: G06F13/362 ,  G06F1/10 ,  H04L12/40013

Abstract: A network subscriber comprises a plurality of individual functional units, each individual functional unit comprising an application interface. The network subscriber further comprises a network subscriber comprises at least a shared functional unit, a first interface for establishing a physical connection and a second interface for establishing a further physical connection.

Abstract translation: 网络用户包括多个单独的功能单元，每个单独的功能单元包括应用接口。 网络用户还包括网络用户，其至少包括共享功能单元，用于建立物理连接的第一接口和用于建立另外的物理连接的第二接口。