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JPS5279849A - Process input/output system for essential safety protection - Google Patents

Process input/output system for essential safety protection

Info

Publication number
JPS5279849A
JPS5279849A JP15867275A JP15867275A JPS5279849A JP S5279849 A JPS5279849 A JP S5279849A JP 15867275 A JP15867275 A JP 15867275A JP 15867275 A JP15867275 A JP 15867275A JP S5279849 A JPS5279849 A JP S5279849A
Authority
JP
Japan
Prior art keywords
output system
safety protection
essential safety
process input
essential
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
JP15867275A
Other languages
Japanese (ja)
Inventor
Isamu Kamata
Akio Otani
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 JP15867275A priority Critical patent/JPS5279849A/en
Publication of JPS5279849A publication Critical patent/JPS5279849A/en
Pending legal-status Critical Current

Links

Landscapes

  • Safety Devices In Control Systems (AREA)

Abstract

PURPOSE: To lower the price of barrier in essential safety circuit and to improve unit in safety in use of insulating barrier prepared between computer for control of plant and input/output devices with prevention of abnormal high-voltage from other devices.
COPYRIGHT: (C)1977,JPO&Japio
JP15867275A 1975-12-26 1975-12-26 Process input/output system for essential safety protection Pending JPS5279849A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15867275A JPS5279849A (en) 1975-12-26 1975-12-26 Process input/output system for essential safety protection

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15867275A JPS5279849A (en) 1975-12-26 1975-12-26 Process input/output system for essential safety protection

Publications (1)

Publication Number Publication Date
JPS5279849A true JPS5279849A (en) 1977-07-05

Family

ID=15676831

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15867275A Pending JPS5279849A (en) 1975-12-26 1975-12-26 Process input/output system for essential safety protection

Country Status (1)

Country Link
JP (1) JPS5279849A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6072003A (en) * 1983-09-28 1985-04-24 Hitachi Ltd Control microcomputer
JP2012074029A (en) * 2010-09-27 2012-04-12 Fisher-Rosemount Systems Inc Method, apparatus, and article of manufacture to identify hazardous process conditions associated with device in process control system

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6072003A (en) * 1983-09-28 1985-04-24 Hitachi Ltd Control microcomputer
JP2012074029A (en) * 2010-09-27 2012-04-12 Fisher-Rosemount Systems Inc Method, apparatus, and article of manufacture to identify hazardous process conditions associated with device in process control system

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