JPS5769305A - Programmable logic controller - Google Patents

Programmable logic controller

Info

Publication number
JPS5769305A
JPS5769305A JP55142610A JP14261080A JPS5769305A JP S5769305 A JPS5769305 A JP S5769305A JP 55142610 A JP55142610 A JP 55142610A JP 14261080 A JP14261080 A JP 14261080A JP S5769305 A JPS5769305 A JP S5769305A
Authority
JP
Japan
Prior art keywords
data
master device
memory
circuit
transmission
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.)
Pending
Application number
JP55142610A
Other languages
Japanese (ja)
Inventor
Kenji Nishikido
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.)
Omron Corp
Original Assignee
Tateisi Electronics Co
Omron Tateisi Electronics Co
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 Tateisi Electronics Co, Omron Tateisi Electronics Co filed Critical Tateisi Electronics Co
Priority to JP55142610A priority Critical patent/JPS5769305A/en
Publication of JPS5769305A publication Critical patent/JPS5769305A/en
Pending 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
    • G05B19/00—Programme-control systems
    • G05B19/02—Programme-control systems electric
    • G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
    • G05B19/05—Programmable logic controllers, e.g. simulating logic interconnections of signals according to ladder diagrams or function charts
    • G05B19/052—Linking several PLC's
    • 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
    • G05B2219/00—Program-control systems
    • G05B2219/10—Plc systems
    • G05B2219/15—Plc structure of the system
    • G05B2219/15018—Communication, serial data transmission, modem

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Automation & Control Theory (AREA)
  • Programmable Controllers (AREA)
  • Multi Processors (AREA)

Abstract

PURPOSE:To easily constitute a large-scale control system, by connecting plural controllers of the same constitution with a link bus and executing each user program in parallel. CONSTITUTION:Both the new data NEW read out of an input/output memory 4 of a master device plus the old data OLD read out of a reference memory 9 are supplied to an exclusive OR circuit 11. Then a data change signal (eor) is obtained from the circuit 11. Both the data (eor) and the NEW are sent alternately to a link bus 10 via multiplexer 35. These data are supplied to a mixing circuit 32 of a slave device to which no right of transmission is given and mixed up there to be changed into a mixture data MIX. This data MIX is written into the memory 9 as well as to the memory 4 via a mask circuit 33. Then the right of transmission is transferred to a master device from the master device to carry out the transmission in the same way to the master device from the slave device. In such way, the data produced at the master and slave devices are made alternately to have the same contents for the memories of both devices.
JP55142610A 1980-10-13 1980-10-13 Programmable logic controller Pending JPS5769305A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55142610A JPS5769305A (en) 1980-10-13 1980-10-13 Programmable logic controller

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55142610A JPS5769305A (en) 1980-10-13 1980-10-13 Programmable logic controller

Publications (1)

Publication Number Publication Date
JPS5769305A true JPS5769305A (en) 1982-04-28

Family

ID=15319324

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55142610A Pending JPS5769305A (en) 1980-10-13 1980-10-13 Programmable logic controller

Country Status (1)

Country Link
JP (1) JPS5769305A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5965309A (en) * 1982-10-06 1984-04-13 Hitachi Ltd Multi-sequencer system
JPS6048504A (en) * 1983-08-26 1985-03-16 Hitachi Ltd Connection system of sequence controller
JPS6129906A (en) * 1984-07-23 1986-02-12 Nissan Motor Co Ltd Programmable logic controller
CN117193149A (en) * 2023-11-08 2023-12-08 重庆华悦生态环境工程研究院有限公司深圳分公司 Control method and device for equipment operation state and electronic equipment

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5965309A (en) * 1982-10-06 1984-04-13 Hitachi Ltd Multi-sequencer system
JPS6048504A (en) * 1983-08-26 1985-03-16 Hitachi Ltd Connection system of sequence controller
JPS6129906A (en) * 1984-07-23 1986-02-12 Nissan Motor Co Ltd Programmable logic controller
CN117193149A (en) * 2023-11-08 2023-12-08 重庆华悦生态环境工程研究院有限公司深圳分公司 Control method and device for equipment operation state and electronic equipment
CN117193149B (en) * 2023-11-08 2024-02-13 重庆华悦生态环境工程研究院有限公司深圳分公司 Control method and device for equipment operation state and electronic equipment

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