JPS57152065A - Programmable logic controller - Google Patents

Programmable logic controller

Info

Publication number
JPS57152065A
JPS57152065A JP56036941A JP3694181A JPS57152065A JP S57152065 A JPS57152065 A JP S57152065A JP 56036941 A JP56036941 A JP 56036941A JP 3694181 A JP3694181 A JP 3694181A JP S57152065 A JPS57152065 A JP S57152065A
Authority
JP
Japan
Prior art keywords
input
ram3
output
user program
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.)
Pending
Application number
JP56036941A
Other languages
Japanese (ja)
Inventor
Yoshitane Saito
Tetsuo Doi
Satoshi Yano
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 JP56036941A priority Critical patent/JPS57152065A/en
Publication of JPS57152065A publication Critical patent/JPS57152065A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F13/00—Interconnection of, or transfer of information or other signals between, memories, input/output devices or central processing units
    • G06F13/10—Program control for peripheral devices
    • G06F13/12—Program control for peripheral devices using hardware independent of the central processor, e.g. channel or peripheral processor
    • G06F13/124—Program control for peripheral devices using hardware independent of the central processor, e.g. channel or peripheral processor where hardware is a sequential transfer control unit, e.g. microprocessor, peripheral processor or state-machine

Landscapes

  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Computer Hardware Design (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Multi Processors (AREA)
  • Programmable Controllers (AREA)

Abstract

PURPOSE:To remarkably reduce the parallel period of the user program, by performing the execution operation of the user program and other controls including an input and output control in parallel with a CPU exclusively arranged to every operation. CONSTITUTION:When a program execution mode is selected with a changeover switch 6a, an input and output CPU2 fetches the input data of an input circuit 4 to an internal RAM2b, and the output data stored in the RAM2b is transferred to an output circuit 5. On the other hand, an operating CPU1 fetches an input data stored in a data exchange area EXC of the common RAM3 to an internal RAM1b, and as to the input and output data stored in the RAM1b, the user program stored in a user program area USP of the RAM3 is sequentially read in and the operation is executed, and the output data of the result is transferred to the area EXC of the RAM3. When a program forming mode is selected with the changeover switch 6a, the data of the RAM3 is read in or written in with the input from an operation panel 6.
JP56036941A 1981-03-13 1981-03-13 Programmable logic controller Pending JPS57152065A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56036941A JPS57152065A (en) 1981-03-13 1981-03-13 Programmable logic controller

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56036941A JPS57152065A (en) 1981-03-13 1981-03-13 Programmable logic controller

Publications (1)

Publication Number Publication Date
JPS57152065A true JPS57152065A (en) 1982-09-20

Family

ID=12483770

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56036941A Pending JPS57152065A (en) 1981-03-13 1981-03-13 Programmable logic controller

Country Status (1)

Country Link
JP (1) JPS57152065A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61134863A (en) * 1984-12-04 1986-06-21 Mitsubishi Electric Corp Data processor
JPH01183048A (en) * 1988-01-08 1989-07-20 Jeol Ltd Electron probe microanalyzer
JPH09198355A (en) * 1997-03-07 1997-07-31 Hitachi Ltd Processor system
US5909052A (en) * 1986-03-12 1999-06-01 Hitachi, Ltd. Semiconductor device having plural chips with the sides of the chips in face-to-face contact with each other in the same crystal plane
US5968150A (en) * 1986-03-12 1999-10-19 Hitachi, Ltd. Processor element having a plurality of CPUs for use in a multiple processor system
CN103403633A (en) * 2011-03-15 2013-11-20 欧姆龙株式会社 Cpu of plc, system program for plc, and recording medium storing system program for plc

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5450329A (en) * 1977-09-28 1979-04-20 Ricoh Co Ltd Copier control device using plural micro-computers

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5450329A (en) * 1977-09-28 1979-04-20 Ricoh Co Ltd Copier control device using plural micro-computers

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61134863A (en) * 1984-12-04 1986-06-21 Mitsubishi Electric Corp Data processor
US5909052A (en) * 1986-03-12 1999-06-01 Hitachi, Ltd. Semiconductor device having plural chips with the sides of the chips in face-to-face contact with each other in the same crystal plane
US5968150A (en) * 1986-03-12 1999-10-19 Hitachi, Ltd. Processor element having a plurality of CPUs for use in a multiple processor system
US6379998B1 (en) 1986-03-12 2002-04-30 Hitachi, Ltd. Semiconductor device and method for fabricating the same
JPH01183048A (en) * 1988-01-08 1989-07-20 Jeol Ltd Electron probe microanalyzer
JPH09198355A (en) * 1997-03-07 1997-07-31 Hitachi Ltd Processor system
CN103403633A (en) * 2011-03-15 2013-11-20 欧姆龙株式会社 Cpu of plc, system program for plc, and recording medium storing system program for plc
CN103403633B (en) * 2011-03-15 2016-08-10 欧姆龙株式会社 The central processor unit of Programmable Logic Controller

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