JPS528278A - Controlling circuit of contactless switch - Google Patents

Controlling circuit of contactless switch

Info

Publication number
JPS528278A
JPS528278A JP8342075A JP8342075A JPS528278A JP S528278 A JPS528278 A JP S528278A JP 8342075 A JP8342075 A JP 8342075A JP 8342075 A JP8342075 A JP 8342075A JP S528278 A JPS528278 A JP S528278A
Authority
JP
Japan
Prior art keywords
contactless switch
controlling circuit
switch
computer
receiving
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
JP8342075A
Other languages
Japanese (ja)
Inventor
Masao Yamamori
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 JP8342075A priority Critical patent/JPS528278A/en
Publication of JPS528278A publication Critical patent/JPS528278A/en
Pending legal-status Critical Current

Links

Landscapes

  • Safety Devices In Control Systems (AREA)

Abstract

PURPOSE: On the occasion when a contactless switch is controlled by signal from a computer, after receiving the opening and closing command of switch, only when the controlling system is normal, answer-back signal is sent to the computer and upon receiving the succeeding controlling command, the switch is actually opened or closed and thus, the reliability of the system is improved.
COPYRIGHT: (C)1977,JPO&Japio
JP8342075A 1975-07-09 1975-07-09 Controlling circuit of contactless switch Pending JPS528278A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8342075A JPS528278A (en) 1975-07-09 1975-07-09 Controlling circuit of contactless switch

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8342075A JPS528278A (en) 1975-07-09 1975-07-09 Controlling circuit of contactless switch

Publications (1)

Publication Number Publication Date
JPS528278A true JPS528278A (en) 1977-01-21

Family

ID=13801934

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8342075A Pending JPS528278A (en) 1975-07-09 1975-07-09 Controlling circuit of contactless switch

Country Status (1)

Country Link
JP (1) JPS528278A (en)

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