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JPS5793403A - Input and output controller - Google Patents

Input and output controller

Info

Publication number
JPS5793403A
JPS5793403A JP16807980A JP16807980A JPS5793403A JP S5793403 A JPS5793403 A JP S5793403A JP 16807980 A JP16807980 A JP 16807980A JP 16807980 A JP16807980 A JP 16807980A JP S5793403 A JPS5793403 A JP S5793403A
Authority
JP
Japan
Prior art keywords
output
input
control
section
terminal
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
JP16807980A
Other languages
Japanese (ja)
Inventor
Shinya Sekine
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 JP16807980A priority Critical patent/JPS5793403A/en
Publication of JPS5793403A publication Critical patent/JPS5793403A/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
    • G05B9/00—Safety arrangements
    • G05B9/02—Safety arrangements electric
    • G05B9/03—Safety arrangements electric with multiple-channel loop, i.e. redundant control systems

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Automation & Control Theory (AREA)
  • Feedback Control In General (AREA)
  • Safety Devices In Control Systems (AREA)

Abstract

PURPOSE:To increase the reliability of control by deciding if the operation output is normal through duplicated operation section and giving output through the switching to the normal output, in a sequence control using microcomputer and the like. CONSTITUTION:A master side controller 10 is provided with an operation device 21 with an operation section, a memory section and a control section, and an input and output control 22 having an input and output table 23. A slave controller 20 consists of an operation device 31 and an input and output control 32. A switching device 40 is connected to devices 10, 20. An input signal from an input interface 8 is given to the devices 10, 20 via the device 40, and the result of operations 21, 31 is decided by the device 40. If the result of decision is coincident, output is given to an output interface 9 from the device 10 connected to a terminal A. If not, the input signal is compared with the output value of a check data 42 of the device 40, and if a failure takes place in the device 10, a switch 43 is operated and output is supplied from the device 20 connected to a terminal B.
JP16807980A 1980-12-01 1980-12-01 Input and output controller Pending JPS5793403A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP16807980A JPS5793403A (en) 1980-12-01 1980-12-01 Input and output controller

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP16807980A JPS5793403A (en) 1980-12-01 1980-12-01 Input and output controller

Publications (1)

Publication Number Publication Date
JPS5793403A true JPS5793403A (en) 1982-06-10

Family

ID=15861447

Family Applications (1)

Application Number Title Priority Date Filing Date
JP16807980A Pending JPS5793403A (en) 1980-12-01 1980-12-01 Input and output controller

Country Status (1)

Country Link
JP (1) JPS5793403A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6165301A (en) * 1984-09-06 1986-04-03 Nec Corp Control device selection method

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6165301A (en) * 1984-09-06 1986-04-03 Nec Corp Control device selection method

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