JPS5713509A - Fault diagnostic system of control device - Google Patents

Fault diagnostic system of control device

Info

Publication number
JPS5713509A
JPS5713509A JP8653180A JP8653180A JPS5713509A JP S5713509 A JPS5713509 A JP S5713509A JP 8653180 A JP8653180 A JP 8653180A JP 8653180 A JP8653180 A JP 8653180A JP S5713509 A JPS5713509 A JP S5713509A
Authority
JP
Japan
Prior art keywords
station
fault
master station
case
control device
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP8653180A
Other languages
Japanese (ja)
Other versions
JPS6337989B2 (en
Inventor
Akira Sawagata
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura Electric Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP8653180A priority Critical patent/JPS5713509A/en
Publication of JPS5713509A publication Critical patent/JPS5713509A/en
Publication of JPS6337989B2 publication Critical patent/JPS6337989B2/ja
Granted legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B9/00—Safety arrangements
    • G05B9/02—Safety arrangements electric
    • G05B9/03—Safety arrangements electric with multiple-channel loop, i.e. redundant control systems

Landscapes

  • Small-Scale Networks (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Automation & Control Theory (AREA)
  • Testing And Monitoring For Control Systems (AREA)

Abstract

PURPOSE:To execute an efficient operation of a transmission line, by communicating with a device which becomes other slave station in accordance with status of a fault in case of communication between a master station and a slave station, when transmitting a data between plural digital control devices which are able to become a master station, respectively. CONSTITUTION:A digital control device has a function for controlling a process in accordance with a prescribed control algorithm, and as for these control devices, the master station is changed at a prescribed time or depending on existence of information to be transmitted to other station, in accordance with a prescribed sequence. In case when a control device 3-1 is a master station and is unable to transmit a data even if it communicates with a control device 3-2, the device 3-1 communicates with other station 3-3 and discriminates a fault. In case when it is able to communicate with the station 3-3 in the same data transmission mode, the fault is considered to have been caused by the station 3-2, it transmits a data including a fact that the device 3-2 is faulty, to station which becomes a master station next. In case when a device which has become a master station is faulty, since a fault can be displayed by its station itself, it can be discriminated easily. Also, after a constant time has elapsed, in case said device does not become a master station, it is discriminated as a fault, and an apparatus control of the whole control system becomes easy.
JP8653180A 1980-06-27 1980-06-27 Fault diagnostic system of control device Granted JPS5713509A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8653180A JPS5713509A (en) 1980-06-27 1980-06-27 Fault diagnostic system of control device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8653180A JPS5713509A (en) 1980-06-27 1980-06-27 Fault diagnostic system of control device

Publications (2)

Publication Number Publication Date
JPS5713509A true JPS5713509A (en) 1982-01-23
JPS6337989B2 JPS6337989B2 (en) 1988-07-27

Family

ID=13889569

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8653180A Granted JPS5713509A (en) 1980-06-27 1980-06-27 Fault diagnostic system of control device

Country Status (1)

Country Link
JP (1) JPS5713509A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6041600A (en) * 1983-08-12 1985-03-05 Kurita Water Ind Ltd Dehydration method of sludge
JPS63114335A (en) * 1986-10-30 1988-05-19 Nec Corp State supervisory method
JPS6424653A (en) * 1987-07-21 1989-01-26 Fujitsu Ltd Backup system for pos system

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS513140A (en) * 1974-06-26 1976-01-12 Hitachi Ltd

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS513140A (en) * 1974-06-26 1976-01-12 Hitachi Ltd

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6041600A (en) * 1983-08-12 1985-03-05 Kurita Water Ind Ltd Dehydration method of sludge
JPS63114335A (en) * 1986-10-30 1988-05-19 Nec Corp State supervisory method
JPS6424653A (en) * 1987-07-21 1989-01-26 Fujitsu Ltd Backup system for pos system

Also Published As

Publication number Publication date
JPS6337989B2 (en) 1988-07-27

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