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Title:
CONTROL SYSTEM, RELAY APPARATUS, AND CONTROL METHOD
Document Type and Number:
WIPO Patent Application WO/2015/156083
Kind Code:
A1
Abstract:
The objective of the invention is to ensure, at low cost, that an instruction is executed on a given condition when a control/monitor system, to which information-related and control-related systems are connected, controls and monitors an object to be controlled and monitored. A control system for achieving this objective comprises: a control apparatus that executes at least one of the controlling and monitoring of an object to be controlled; a computer that executes a process related to the controlling or monitoring; and a gateway apparatus that relays a communication message between the control apparatus and the computer. When having received a first communication message from the computer, the gateway apparatus acquires a predetermined status index related to the first communication message, and determines, on the basis of the status index, whether a predetermined execution condition is satisfied. If the execution condition is satisfied, the gateway apparatus transmits, to the control apparatus, a second communication message based on the received first communication message. If the execution condition is not satisfied, the gateway apparatus does not transmit the second communication message to the control apparatus.

Inventors:
OHMIYA MASAHIRO (JP)
YOKOTA DAISUKE (JP)
SHIMIZU KATSUTO (JP)
IRIE NAOHIKO (JP)
Application Number:
JP2015/057402
Publication Date:
October 15, 2015
Filing Date:
March 13, 2015
Export Citation:
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Assignee:
HITACHI LTD (JP)
International Classes:
H04L12/46; G05B23/02; H04L12/28
Domestic Patent References:
WO2010140193A12010-12-09
Foreign References:
JP2011024010A2011-02-03
JP2002016614A2002-01-18
JP2003244187A2003-08-29
JP2008227798A2008-09-25
JP2009253803A2009-10-29
JP2008193572A2008-08-21
Attorney, Agent or Firm:
INOUE Manabu et al. (JP)
Manabu Inoue (JP)
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