JPS57182203A - Programmable sequence controller - Google Patents

Programmable sequence controller

Info

Publication number
JPS57182203A
JPS57182203A JP6516081A JP6516081A JPS57182203A JP S57182203 A JPS57182203 A JP S57182203A JP 6516081 A JP6516081 A JP 6516081A JP 6516081 A JP6516081 A JP 6516081A JP S57182203 A JPS57182203 A JP S57182203A
Authority
JP
Japan
Prior art keywords
plcs
input data
planted
input
successively
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
JP6516081A
Other languages
Japanese (ja)
Inventor
Kazuyoshi Asada
Masaoki Takagi
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 JP6516081A priority Critical patent/JPS57182203A/en
Publication of JPS57182203A publication Critical patent/JPS57182203A/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
    • G05B2219/12—Plc mp multi processor system
    • G05B2219/1213—All plc send their input to a common image memory, output directly send out

Abstract

PURPOSE:To use plural CPUs which fit to a minimum scale programmable sequence controller (PLC) as one set of large sized PLC, by connecting them with each other. CONSTITUTION:Data taken in from an I/O input 13 are transferred to all PLCs 45 and 46 connected to a transfer line 47 through the transfer line 47. The connected PLCs deliver own I/O input data in order. To the line 47, all input data of all the PLCs are successively sent. When the I/O input data are successively planted in an input image memory 51, all I/O input data of all the PLCs are planted in the image memory 51. When the PLCs complete successive delivery of own I/O input data in order, they wait to the next turn. They repeat this procedure. Program instructions planted in a program memory 11 are successively executed at an operating section 12. Operated results issued through output instructions are directly sent to an I/O output 14.
JP6516081A 1981-05-01 1981-05-01 Programmable sequence controller Pending JPS57182203A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6516081A JPS57182203A (en) 1981-05-01 1981-05-01 Programmable sequence controller

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6516081A JPS57182203A (en) 1981-05-01 1981-05-01 Programmable sequence controller

Publications (1)

Publication Number Publication Date
JPS57182203A true JPS57182203A (en) 1982-11-10

Family

ID=13278847

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6516081A Pending JPS57182203A (en) 1981-05-01 1981-05-01 Programmable sequence controller

Country Status (1)

Country Link
JP (1) JPS57182203A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59168506A (en) * 1983-03-15 1984-09-22 Matsushita Electric Works Ltd Sequence analyzer
JPS59183404A (en) * 1983-03-15 1984-10-18 Matsushita Electric Works Ltd Sequence analyzer
JPS59188703A (en) * 1983-03-15 1984-10-26 Matsushita Electric Works Ltd Control system
JPS6048504A (en) * 1983-08-26 1985-03-16 Hitachi Ltd Connection system of sequence controller
WO2008049753A1 (en) * 2006-10-25 2008-05-02 Endress+Hauser Gmbh+Co.Kg Process automation system for determining, for monitoring and/or for influencing different process variables and/or state variables

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59168506A (en) * 1983-03-15 1984-09-22 Matsushita Electric Works Ltd Sequence analyzer
JPS59183404A (en) * 1983-03-15 1984-10-18 Matsushita Electric Works Ltd Sequence analyzer
JPS59188703A (en) * 1983-03-15 1984-10-26 Matsushita Electric Works Ltd Control system
JPH0526201B2 (en) * 1983-03-15 1993-04-15 Matsushita Electric Works Ltd
JPS6048504A (en) * 1983-08-26 1985-03-16 Hitachi Ltd Connection system of sequence controller
WO2008049753A1 (en) * 2006-10-25 2008-05-02 Endress+Hauser Gmbh+Co.Kg Process automation system for determining, for monitoring and/or for influencing different process variables and/or state variables
US8311651B2 (en) 2006-10-25 2012-11-13 Endress + Hauser Gmbh + Co. Kg Process automation system for determining, monitoring and/or influencing different process variables and/or state variables

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