JPS5437436A - Data bus fault diagnosis device for sequence controller - Google Patents

Data bus fault diagnosis device for sequence controller

Info

Publication number
JPS5437436A
JPS5437436A JP10270277A JP10270277A JPS5437436A JP S5437436 A JPS5437436 A JP S5437436A JP 10270277 A JP10270277 A JP 10270277A JP 10270277 A JP10270277 A JP 10270277A JP S5437436 A JPS5437436 A JP S5437436A
Authority
JP
Japan
Prior art keywords
data bus
fault diagnosis
diagnosis device
sequence controller
bus fault
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
JP10270277A
Other languages
Japanese (ja)
Other versions
JPS6013592B2 (en
Inventor
Kazuyoshi Osako
Katsumi Taniuchi
Masao Oura
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP52102702A priority Critical patent/JPS6013592B2/en
Publication of JPS5437436A publication Critical patent/JPS5437436A/en
Publication of JPS6013592B2 publication Critical patent/JPS6013592B2/en
Expired legal-status Critical Current

Links

Landscapes

  • Testing And Monitoring For Control Systems (AREA)
  • Control By Computers (AREA)
  • Programmable Controllers (AREA)
  • Small-Scale Networks (AREA)

Abstract

PURPOSE:To ensure an fault diagnosis for the data bus in an assured way through a simple constitution by giving a constant monitoring to the specified data for diagnosis obtained from other terminal during the dead period of the data bus in the fetch cycle.
JP52102702A 1977-08-29 1977-08-29 Sequence controller data bus failure diagnosis device Expired JPS6013592B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP52102702A JPS6013592B2 (en) 1977-08-29 1977-08-29 Sequence controller data bus failure diagnosis device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP52102702A JPS6013592B2 (en) 1977-08-29 1977-08-29 Sequence controller data bus failure diagnosis device

Publications (2)

Publication Number Publication Date
JPS5437436A true JPS5437436A (en) 1979-03-19
JPS6013592B2 JPS6013592B2 (en) 1985-04-08

Family

ID=14334583

Family Applications (1)

Application Number Title Priority Date Filing Date
JP52102702A Expired JPS6013592B2 (en) 1977-08-29 1977-08-29 Sequence controller data bus failure diagnosis device

Country Status (1)

Country Link
JP (1) JPS6013592B2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH022402A (en) * 1988-06-13 1990-01-08 Fuji Electric Co Ltd Programmable controller
KR20170077175A (en) 2014-12-05 2017-07-05 쇼와 덴코 가부시키가이샤 Light control panel and optical imaging device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH022402A (en) * 1988-06-13 1990-01-08 Fuji Electric Co Ltd Programmable controller
KR20170077175A (en) 2014-12-05 2017-07-05 쇼와 덴코 가부시키가이샤 Light control panel and optical imaging device

Also Published As

Publication number Publication date
JPS6013592B2 (en) 1985-04-08

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