JPS5657101A - Control system switching system - Google Patents

Control system switching system

Info

Publication number
JPS5657101A
JPS5657101A JP13191979A JP13191979A JPS5657101A JP S5657101 A JPS5657101 A JP S5657101A JP 13191979 A JP13191979 A JP 13191979A JP 13191979 A JP13191979 A JP 13191979A JP S5657101 A JPS5657101 A JP S5657101A
Authority
JP
Japan
Prior art keywords
control device
cable
channel
connector
faulty
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
JP13191979A
Other languages
Japanese (ja)
Inventor
Shoichi Matsumiya
Toichi Fujitani
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 JP13191979A priority Critical patent/JPS5657101A/en
Publication of JPS5657101A publication Critical patent/JPS5657101A/en
Pending legal-status Critical Current

Links

Landscapes

  • Feedback Control In General (AREA)
  • Safety Devices In Control Systems (AREA)

Abstract

PURPOSE: To make it possible to back up a faulty control device only with connection change of cables, by providing a function, which discriminates a channel whose cable connects the control device and a device to be controlled, in the control device.
CONSTITUTION: Since control device 1a is used to back up control device 1b when control device 1b controlling channel CH.B becomes faulty, connector 4A of cable 3A is removed from control device 1a, and connector 4B of cable 3B is connected to control device 1a. Then, control device 1a receives the cable identification code from connector 4B and discriminates that the new connected cable is cable 3B of channel CH.B, and control corresponding to the channel is performed. Thus, the faulty control device can be backed up only with connection change of cables.
COPYRIGHT: (C)1981,JPO&Japio
JP13191979A 1979-10-15 1979-10-15 Control system switching system Pending JPS5657101A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13191979A JPS5657101A (en) 1979-10-15 1979-10-15 Control system switching system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13191979A JPS5657101A (en) 1979-10-15 1979-10-15 Control system switching system

Publications (1)

Publication Number Publication Date
JPS5657101A true JPS5657101A (en) 1981-05-19

Family

ID=15069253

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13191979A Pending JPS5657101A (en) 1979-10-15 1979-10-15 Control system switching system

Country Status (1)

Country Link
JP (1) JPS5657101A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60230166A (en) * 1984-04-27 1985-11-15 Toshiba Corp Image forming device
JPS62147401A (en) * 1985-12-20 1987-07-01 Sony Corp Diffraction grating

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60230166A (en) * 1984-04-27 1985-11-15 Toshiba Corp Image forming device
JPS62147401A (en) * 1985-12-20 1987-07-01 Sony Corp Diffraction grating

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