JPS57101906A - Programmable controller - Google Patents

Programmable controller

Info

Publication number
JPS57101906A
JPS57101906A JP17840180A JP17840180A JPS57101906A JP S57101906 A JPS57101906 A JP S57101906A JP 17840180 A JP17840180 A JP 17840180A JP 17840180 A JP17840180 A JP 17840180A JP S57101906 A JPS57101906 A JP S57101906A
Authority
JP
Japan
Prior art keywords
input
switch
state
nonpermission
changed over
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
JP17840180A
Other languages
Japanese (ja)
Inventor
Naohisa Yamaguchi
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.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura 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 Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP17840180A priority Critical patent/JPS57101906A/en
Publication of JPS57101906A publication Critical patent/JPS57101906A/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
    • G05B19/054—Input/output
    • 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
    • G05B2219/11—Plc I-O input output
    • G05B2219/1199—Inserting or taking out of boards during power on, hot plug in

Landscapes

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

Abstract

PURPOSE:To replace an input part without exerting a large influence on an object to be controlled, by replacing a necessary part in the faulty input part in a state that the influence exerted on its original control has beein minimized. CONSTITUTION:An input permission-nonpermission setting part 12 having an input permission-nonpermission switch 11 is provided on the input side of an input/output control part 4A. In this state, before a corresponding operation is executed to a corresponding part of an input/output storage part 3, a state of the switch 11 of the setting part 12 is read, and in case when the switch 11 is changed over to the input permission side, a state of an input signal from a corresponding input part 8 read, and it is stored in a corresponding part of the storage part 3. On the other hand, in case when the switch 11 of the setting part 12 is changed over to the input nonpermission side, read from the input part 8 is not executed, and the part of contents of the storage part 3, which has been changed over to the input nonpermission side is held at a state before the switch 11 is changed over. In this way, a faulty part of the input part 8 is replaced.
JP17840180A 1980-12-17 1980-12-17 Programmable controller Pending JPS57101906A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP17840180A JPS57101906A (en) 1980-12-17 1980-12-17 Programmable controller

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP17840180A JPS57101906A (en) 1980-12-17 1980-12-17 Programmable controller

Publications (1)

Publication Number Publication Date
JPS57101906A true JPS57101906A (en) 1982-06-24

Family

ID=16047847

Family Applications (1)

Application Number Title Priority Date Filing Date
JP17840180A Pending JPS57101906A (en) 1980-12-17 1980-12-17 Programmable controller

Country Status (1)

Country Link
JP (1) JPS57101906A (en)

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