JPS55123704A - Maintenance device of control unit - Google Patents

Maintenance device of control unit

Info

Publication number
JPS55123704A
JPS55123704A JP3055279A JP3055279A JPS55123704A JP S55123704 A JPS55123704 A JP S55123704A JP 3055279 A JP3055279 A JP 3055279A JP 3055279 A JP3055279 A JP 3055279A JP S55123704 A JPS55123704 A JP S55123704A
Authority
JP
Japan
Prior art keywords
maintenance
computer
control
control unit
make
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
JP3055279A
Other languages
Japanese (ja)
Inventor
Kenji Yoneda
Kazuhiro Sakata
Masaaki Nakazato
Takeo Yuminaka
Soshiro Kuzunuki
Yasunori Katayama
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 JP3055279A priority Critical patent/JPS55123704A/en
Publication of JPS55123704A publication Critical patent/JPS55123704A/en
Pending legal-status Critical Current

Links

Landscapes

  • Testing And Monitoring For Control Systems (AREA)
  • Safety Devices In Control Systems (AREA)

Abstract

PURPOSE:To make maintenance work high-efficiency and make the control system safe by providing a function, by which the maintenance unit for a control unit is connected and disconnected, in the control unit controlled by an operating control computer. CONSTITUTION:Before elevator control unit 20 including control computer 3 and maintenance unit 21 are connected electrically through 7, 8 and 9 by signal lines, it is decided whether they have been connected or not. If it is decided that they are not connected, a function to make the receiving function of control data for maintenance in computer 3 ineffective is provided in computer 3. Further, it is decided whether they have been connected electrically or not; and if it is decided that they have been connected, a function to make the transmission and receiving function of control data for maintenance between computer 3 and unit 21 effective is provided. Thus, maintenance work can be made high-efficiency, and the control system can be made safe.
JP3055279A 1979-03-17 1979-03-17 Maintenance device of control unit Pending JPS55123704A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3055279A JPS55123704A (en) 1979-03-17 1979-03-17 Maintenance device of control unit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3055279A JPS55123704A (en) 1979-03-17 1979-03-17 Maintenance device of control unit

Publications (1)

Publication Number Publication Date
JPS55123704A true JPS55123704A (en) 1980-09-24

Family

ID=12306950

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3055279A Pending JPS55123704A (en) 1979-03-17 1979-03-17 Maintenance device of control unit

Country Status (1)

Country Link
JP (1) JPS55123704A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5760406A (en) * 1980-09-29 1982-04-12 Ibm Method and device for controlling machine
JPS5981708A (en) * 1982-10-30 1984-05-11 Diesel Kiki Co Ltd Data monitoring device of electronic control type internal-combustion engine apparatus
JPS61281303A (en) * 1985-06-07 1986-12-11 Diesel Kiki Co Ltd External supervisory and control equipment for electronic control type internal-combustion engine equipment

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5760406A (en) * 1980-09-29 1982-04-12 Ibm Method and device for controlling machine
JPS5981708A (en) * 1982-10-30 1984-05-11 Diesel Kiki Co Ltd Data monitoring device of electronic control type internal-combustion engine apparatus
JPS61281303A (en) * 1985-06-07 1986-12-11 Diesel Kiki Co Ltd External supervisory and control equipment for electronic control type internal-combustion engine equipment

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