JPS55154604A - Sequence controller - Google Patents

Sequence controller

Info

Publication number
JPS55154604A
JPS55154604A JP6173879A JP6173879A JPS55154604A JP S55154604 A JPS55154604 A JP S55154604A JP 6173879 A JP6173879 A JP 6173879A JP 6173879 A JP6173879 A JP 6173879A JP S55154604 A JPS55154604 A JP S55154604A
Authority
JP
Japan
Prior art keywords
circuit
cpu
signal
set time
output
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
JP6173879A
Other languages
Japanese (ja)
Inventor
Masakazu Yokoi
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.)
Tsubakimoto Chain Co
Original Assignee
Tsubakimoto Chain Co
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 Tsubakimoto Chain Co filed Critical Tsubakimoto Chain Co
Priority to JP6173879A priority Critical patent/JPS55154604A/en
Publication of JPS55154604A publication Critical patent/JPS55154604A/en
Pending legal-status Critical Current

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Landscapes

  • Safety Devices In Control Systems (AREA)

Abstract

PURPOSE: To enable efficient maintenance, by displaying a permanent failure of CPU after distincting from temporary operation defect, through the input of the output signals of one timer circuit and the relation of complementary to the reset terminal of CPU.
CONSTITUTION: A CPU produces the timing signal of a given time interval T0 at normal operation, and the set time of timer circuits 1 and 2 are taken as T1 and T2. The circuit 1 starts time count with the timing signal, and the circuit 2 is connected to the circuit 1 so that the time count of the circuit 2 starts with the signal produced by the circuit 1 when it reaches the set time T1. Further, the signal produced when the circuit 2 reaches the set time T2, is fed to the circuit 1 in the equivalence with the timing signal. Moreover, the output of the circuit 2 is the driving signal to the display unit 7 and the inversion output signal Q2 complementary with the Q output signal Q2 of the circuit 2 is input to the reset terminal of CPU. Thus, a permanent failure of CPU can be distincted from temporary defect for display, allowing efficient maintenance.
COPYRIGHT: (C)1980,JPO&Japio
JP6173879A 1979-05-18 1979-05-18 Sequence controller Pending JPS55154604A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6173879A JPS55154604A (en) 1979-05-18 1979-05-18 Sequence controller

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6173879A JPS55154604A (en) 1979-05-18 1979-05-18 Sequence controller

Publications (1)

Publication Number Publication Date
JPS55154604A true JPS55154604A (en) 1980-12-02

Family

ID=13179824

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6173879A Pending JPS55154604A (en) 1979-05-18 1979-05-18 Sequence controller

Country Status (1)

Country Link
JP (1) JPS55154604A (en)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57155601A (en) * 1981-03-20 1982-09-25 Nippon Denso Co Ltd Car safety device
JPS57159302A (en) * 1981-03-26 1982-10-01 Toshiba Corp Car controller
JPS5814204A (en) * 1981-07-20 1983-01-27 Hitachi Ltd Microcomputer controller
JPS5870303A (en) * 1981-10-21 1983-04-26 Hitachi Ltd Controller for diesel engine power generator
JPS58113103U (en) * 1982-01-20 1983-08-02 ヤンマー農機株式会社 work machine
JPS59121554A (en) * 1982-12-28 1984-07-13 Fujitsu Ltd Processor backup system
JPS62151901A (en) * 1985-12-25 1987-07-06 Nec Corp Mechanism and protecting system for drive circuit
JPS6446769A (en) * 1987-12-28 1989-02-21 Canon Kk Image processor

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57155601A (en) * 1981-03-20 1982-09-25 Nippon Denso Co Ltd Car safety device
JPS57159302A (en) * 1981-03-26 1982-10-01 Toshiba Corp Car controller
JPS5814204A (en) * 1981-07-20 1983-01-27 Hitachi Ltd Microcomputer controller
JPH0413738B2 (en) * 1981-07-20 1992-03-10 Hitachi Ltd
JPS5870303A (en) * 1981-10-21 1983-04-26 Hitachi Ltd Controller for diesel engine power generator
JPS58113103U (en) * 1982-01-20 1983-08-02 ヤンマー農機株式会社 work machine
JPH0342481Y2 (en) * 1982-01-20 1991-09-05
JPS59121554A (en) * 1982-12-28 1984-07-13 Fujitsu Ltd Processor backup system
JPH0218504B2 (en) * 1982-12-28 1990-04-25 Fujitsu Ltd
JPS62151901A (en) * 1985-12-25 1987-07-06 Nec Corp Mechanism and protecting system for drive circuit
JPS6446769A (en) * 1987-12-28 1989-02-21 Canon Kk Image processor
JPH0565872B2 (en) * 1987-12-28 1993-09-20 Canon Kk

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