Receiver network component, communication network and method for operating communication network
A technology of network components and communication networks, applied in the direction of ring network, data exchange network, general control system, etc., can solve the problems of not providing the ability of network components to work together, computing troubles, etc., and achieve the effect of protecting the ability to work together
Inactive Publication Date: 2015-09-30
SIEMENS ENERGY GLOBAL GMBH CO & KG
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- Application Information
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Problems solved by technology
To date, proprietary communication and redundancy methods have been used for communication networks with redundant sender network components, so that interoperability of network components of different manufacturers is generally not provided
Furthermore, the application of proprietary redundancy methods is usually carried out at the application level, so that the method can only be executed with relatively computational complexity
Method used
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Embodiment Construction
[0041] figure 1 An exemplary embodiment of an extremely simply constructed communication network 10 is shown in a highly schematic illustration. According to the exemplary embodiment shown, the communication network 10 consists of two subnetworks 10A and 10B via which data telegrams can be transmitted redundantly from the two sender network components 11A, 11B to the receiver network component 13 . For this purpose, subnetworks 10A and 10B are designed redundantly with one another and have switches 14A and 14B in addition to communication lines. The switches 14A and 14B are used for the correct transmission of data telegrams from the sender network elements 11A, 11B to the receiver network elements 13 . Besides the illustrated structure of the communication network 10 , other network topologies can of course also be used, for example the communication network 10 can have a ring structure and / or a plurality of sender and receiver network components can be present.
[0042] Th...
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A receiver network component operates in a communication network of an automation system. The component receives data messages sent redundantly by transmitter network components of the communication network and rejects duplicates of an already received data message. Interoperability of network components from different manufacturers is ensured even for device-redundant transmitter network components and redundant transmission of data messages is achieve with comparatively low complexity. The receiver network component is prompted by reception of a current data message from one of the transmitter network devices to check whether a data message with identical useful data has already been received from another transmitter network component. The data message is processed if it is received for the first time and it is rejected as a duplicate if it is a data message with such useful data that have already been received in an earlier data message from another transmitter network component.
Description
technical field [0001] The invention relates to a receiver network component for operation in a communication network of an automation system, wherein the receiver network component is designed to receive data telegrams sent redundantly by a sender network component of the communication network and discard already received A copy of the datagram. Furthermore, the invention relates to a communication network of an automation system having a plurality of network components which are connected to one another for exchanging data telegrams, wherein the data telegrams are exchanged redundantly. The invention also relates to a method for operating such a communication network. Background technique [0002] Network components, that is to say network-capable devices, which can be connected to a communication network and exchange data via the communication network by transmitting corresponding data telegrams are currently used in many technical fields, for example in the automation o...
Claims
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IPC IPC(8): H04L1/22
CPCH04L45/24G05B9/03H04L67/10H04L43/10H04L12/40176G06F11/1608H04L1/22G05B19/4185H04L12/42H04L2012/421Y02P90/02
Inventor H.海因C.霍加
Owner SIEMENS ENERGY GLOBAL GMBH CO & KG