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Wireless gateway apparatus

A device and gateway technology, applied in the field of wireless gateway equipment, can solve problems such as increased burden

Inactive Publication Date: 2013-08-14
YOKOGAWA ELECTRIC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

For this reason, with the above-mentioned configuration, since both the server 31 and the server 32 access the external controller 5 in parallel, the burden imposed on the external controller 5 becomes large.

Method used

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Embodiment Construction

[0032] The invention will be described below with reference to exemplary preferred embodiments. Those skilled in the art will appreciate that many alternative preferred embodiments can be accomplished using the teachings of the present invention and that the invention is not limited to the preferred embodiments shown for explanatory purposes.

[0033] A redundant communication system according to a first preferred embodiment of the present invention will be described below.

[0034] figure 1 is a block diagram showing the configuration of a redundant communication system according to the first preferred embodiment of the present invention.

[0035] Such as figure 1 As shown, the distributed field control system 10 includes: a controller 1, which controls the field device group; operation and monitoring equipment 21 and 22, which operate and monitor the field device group via the controller 1; servers 31 and 32, which have a gateway function ; and network switches SW1, SW2...

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PUM

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Abstract

A redundant communication system may include: a plurality of multiple communication apparatuses configured to function as a gateway, the same network address being allocated to all of the plurality of multiple communication apparatuses on a network; a setting unit configured to set one of the plurality of multiple communication apparatuses to be an active system as a first communication apparatus, the setting unit being configured to set the other of the plurality of multiple communication apparatuses to be a standby system as a second communication apparatus; and a switch configured to open to the network only the first communication apparatus.

Description

[0001] Cross References to Related Applications [0002] This application claims priority from Japanese Patent Application No. 2012-029133 filed on February 14, 2012, the entire contents of which are incorporated herein by reference. technical field [0003] The present invention relates to a redundant communication system and a redundant communication method in which multiple provided communication devices are used as gateways. Background technique [0004] All patents, patent applications, patent publications, scientific literature, etc. cited or identified below in this application are hereby incorporated by reference in their entirety to more fully describe the state of the art to which this invention pertains. [0005] A communication device with a gateway function is used when connecting, for example, controllers from different manufacturers and having different communication standards in a field system. In order to improve the reliability of the field system, redunda...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/24H04L12/66
CPCH04L41/0668H04L69/40H04L45/00H04L61/5007
Inventor 泽田圭介本乡健
Owner YOKOGAWA ELECTRIC CORP