JPS559225A - Check method of double bus - Google Patents

Check method of double bus

Info

Publication number
JPS559225A
JPS559225A JP8021478A JP8021478A JPS559225A JP S559225 A JPS559225 A JP S559225A JP 8021478 A JP8021478 A JP 8021478A JP 8021478 A JP8021478 A JP 8021478A JP S559225 A JPS559225 A JP S559225A
Authority
JP
Japan
Prior art keywords
section
bus
units
spare
data
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
JP8021478A
Other languages
Japanese (ja)
Other versions
JPS6040058B2 (en
Inventor
Fumihiko Nakada
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.)
Nissin Electric Co Ltd
Original Assignee
Nissin 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 Nissin Electric Co Ltd filed Critical Nissin Electric Co Ltd
Priority to JP53080214A priority Critical patent/JPS6040058B2/en
Publication of JPS559225A publication Critical patent/JPS559225A/en
Publication of JPS6040058B2 publication Critical patent/JPS6040058B2/en
Expired legal-status Critical Current

Links

Landscapes

  • Hardware Redundancy (AREA)
  • Detection And Prevention Of Errors In Transmission (AREA)
  • Small-Scale Networks (AREA)

Abstract

PURPOSE: To give the compulsive operation instruction signal to the data bus and data control section in operation disable state, to check the propriety of other operation in operation disable state, without giving any hindrance to one function under operation.
CONSTITUTION: The unit 1 to n having normal use I/O section 10A and spare I/O section 10B as the data bus interface section (hereinafter I/O section) 10 are connected to the normal use bus 20A and spare bus 20B. The test for the said spare units is conducted when the operation of the spare units is inhibited with the selection signal line 30. When compulsive operation instruction signal is made on the signal line 40B at the I/O 10B of the unit 1, the I/O 10B for all the units is separated from the processing section S. After that, the check data CD is fed from the unit 1 to the bus 20B. The I/O section 10B of the unit 1 can check the bus and other units with the response condition from other units to the said data.
COPYRIGHT: (C)1980,JPO&Japio
JP53080214A 1978-06-30 1978-06-30 How to check redundant bus Expired JPS6040058B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP53080214A JPS6040058B2 (en) 1978-06-30 1978-06-30 How to check redundant bus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP53080214A JPS6040058B2 (en) 1978-06-30 1978-06-30 How to check redundant bus

Publications (2)

Publication Number Publication Date
JPS559225A true JPS559225A (en) 1980-01-23
JPS6040058B2 JPS6040058B2 (en) 1985-09-09

Family

ID=13712127

Family Applications (1)

Application Number Title Priority Date Filing Date
JP53080214A Expired JPS6040058B2 (en) 1978-06-30 1978-06-30 How to check redundant bus

Country Status (1)

Country Link
JP (1) JPS6040058B2 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5991754A (en) * 1982-11-18 1984-05-26 Japanese National Railways<Jnr> System and device for switching communication line
JPS60134352A (en) * 1983-12-21 1985-07-17 Hitachi Ltd Duplex bus control device
JPS63171046U (en) * 1987-04-28 1988-11-08

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5991754A (en) * 1982-11-18 1984-05-26 Japanese National Railways<Jnr> System and device for switching communication line
JPS60134352A (en) * 1983-12-21 1985-07-17 Hitachi Ltd Duplex bus control device
JPS63171046U (en) * 1987-04-28 1988-11-08

Also Published As

Publication number Publication date
JPS6040058B2 (en) 1985-09-09

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