JPS6437197A - System and device for monitoring control circuit - Google Patents

System and device for monitoring control circuit

Info

Publication number
JPS6437197A
JPS6437197A JP62192588A JP19258887A JPS6437197A JP S6437197 A JPS6437197 A JP S6437197A JP 62192588 A JP62192588 A JP 62192588A JP 19258887 A JP19258887 A JP 19258887A JP S6437197 A JPS6437197 A JP S6437197A
Authority
JP
Japan
Prior art keywords
status
counter
control circuit
history
circuit
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.)
Granted
Application number
JP62192588A
Other languages
Japanese (ja)
Other versions
JP2575145B2 (en
Inventor
Naoto Kagami
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.)
Canon Inc
Original Assignee
Canon Inc
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 Canon Inc filed Critical Canon Inc
Priority to JP62192588A priority Critical patent/JP2575145B2/en
Publication of JPS6437197A publication Critical patent/JPS6437197A/en
Application granted granted Critical
Publication of JP2575145B2 publication Critical patent/JP2575145B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Landscapes

  • Maintenance And Management Of Digital Transmission (AREA)

Abstract

PURPOSE:To rapidly execute the analysis of a cause of a communication failure by providing a status counter that shows the status of a circuit, storing an output from this status counter with hysteresis intact, and monitoring a status control circuit based on the history of the status counter. CONSTITUTION:A control circuit 10 to activate/inactivate a line is constituted of the status counter 1 to show the status of a circuit and a status control circuit 2 that controls corresponding to a value of said counter 1. An FIFO memory 3, corresponding to the variation in the counter 1, stores outputs from the counter 1 as keeping the history. The content in the FIFO memory 3 is displayed in a display part 4 under a prescribed condition, and thus the control circuit 10 is monitored based on the history is in the status counter 1.
JP62192588A 1987-08-03 1987-08-03 Control circuit monitoring method and device Expired - Fee Related JP2575145B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62192588A JP2575145B2 (en) 1987-08-03 1987-08-03 Control circuit monitoring method and device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62192588A JP2575145B2 (en) 1987-08-03 1987-08-03 Control circuit monitoring method and device

Publications (2)

Publication Number Publication Date
JPS6437197A true JPS6437197A (en) 1989-02-07
JP2575145B2 JP2575145B2 (en) 1997-01-22

Family

ID=16293777

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62192588A Expired - Fee Related JP2575145B2 (en) 1987-08-03 1987-08-03 Control circuit monitoring method and device

Country Status (1)

Country Link
JP (1) JP2575145B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0852500A (en) * 1994-08-11 1996-02-27 Hirotsugu Kitajima Method for treating excess sludge and device therefor

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0852500A (en) * 1994-08-11 1996-02-27 Hirotsugu Kitajima Method for treating excess sludge and device therefor

Also Published As

Publication number Publication date
JP2575145B2 (en) 1997-01-22

Similar Documents

Publication Publication Date Title
EP0245113A3 (en) Air condition monitor unit
JPS56123014A (en) Overrun preventing device of program control device
JPS6437197A (en) System and device for monitoring control circuit
AU3369189A (en) Time display device
ES2002189A6 (en) Train monitoring device
JPS566022A (en) Engine controlling system
JPS5725734A (en) Party call receiver
JPS5440458A (en) Elevator supervising system
JPS567583A (en) Remote control system
JPS5739414A (en) Control system monitoring device
JPS57159316A (en) Power supply interrupting system
JPS57185731A (en) Line switching circuit
JPS5421215A (en) Power monitor
JPS5736313A (en) Monitoring system
JPS55149894A (en) Balance equipped with watch
SU1451427A1 (en) Device for controlling and checking lubrication system
JPS6486729A (en) Bus monitor device for token passing system
JPS5723156A (en) Fault monitoring system of information processor
JPS56163474A (en) Electronic timepiece
JPS54151874A (en) Electronic watch
JPS6462698A (en) Display device
JPS6426901A (en) Control output switch device for duplex system
JPS5759207A (en) Monitoring system of sequence controller
JPS5730004A (en) Centralized monitoring system
JPS5790710A (en) Process alarm display device

Legal Events

Date Code Title Description
LAPS Cancellation because of no payment of annual fees