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Network with partial unidirectional data transmission

A technology of external network and internal network, applied in the direction of transmission system, electrical components, etc., can solve problems such as unfavorable data transmission time

Active Publication Date: 2018-11-09
HIRSCHMANN AUTOMATION AND CONTROL +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Said signal processing chain leads to a disadvantageous increase in the data transmission time from one of the networks to the other network

Method used

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  • Network with partial unidirectional data transmission
  • Network with partial unidirectional data transmission

Examples

Experimental program
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Embodiment Construction

[0022] figure 1 A schematic configuration of a network 10 is shown, in which at least one external (safety-non-critical) network 12 and at least one internal (safety-critical) network 13 are also schematically shown. Symbolically, at least one network device 14 (eg data logger) is shown for the external network 12 and at least one network device 15 (eg data source) is symbolically shown for the internal network 13 .

[0023]The two networks 12 , 13 (or possibly other networks or network devices) are connected to a transmission unit 16 . The transmission unit 16 has a first router 17 and a further router 18 , wherein in the exemplary embodiment the external network 12 is connected to the router 18 and the internal network 13 is connected to the router 17 via corresponding cable connections and interfaces. The two routers 17 , 18 are connected to each other for data transmission in a unidirectional direction, wherein the unidirectional data transmission is symbolically indicate...

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Abstract

Method for operating a network (10), wherein the network (10) comprises at least one outer network (12) having at least one network device (14) and at least one inner network (13) having at least onenetwork device (15), wherein additionally a transmission unit (16) is present that blocks a transmission of data from the outer network (12) to the inner network (13) and allows it in the opposite direction (or vice versa), characterised in that the transmission unit (16) permits a transmission of data only from the inner network (13) to the outer network (12) and the at least one network device (15) sends data from the inner network (13) to the transmission unit (16) with a first address, wherein the transmission unit (16) converts this first address into a second address and thereafter the data are transmitted with this second address in the direction of the outer network (12), the second address being a target address for the at least one network device in the outer network (12).

Description

technical field [0001] The invention relates to a method for operating a network and a device for carrying out such a method according to the features of the respective preambles of the independent claims. Background technique [0002] It is basically known that a plurality of network devices are connected to one another in a network and exchange data with one another. [0003] Furthermore, there are networks which are divided into at least two separate networks, in which not only data are exchanged between network devices within a corresponding network, but also data from network devices of one network are transmitted to the other network to network devices at the further network, and vice versa. [0004] As long as the at least two networks (network segments) are equivalent, there is no doubt that data will be transmitted from one of the networks into at least the other of the networks and vice versa. However, there are applications when networks are operated in which th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L29/06
CPCH04L61/103H04L61/106H04L63/0227H04L63/105H04L61/5038H04L2101/622H04L63/0428
Inventor D·戈尔策尔利克D·克利佩尔J·席林R-D·佐默H·鲍尔H·克拉夫特
Owner HIRSCHMANN AUTOMATION AND CONTROL