JPS56118153A - Digital input circuit - Google Patents
Digital input circuitInfo
- Publication number
- JPS56118153A JPS56118153A JP2082280A JP2082280A JPS56118153A JP S56118153 A JPS56118153 A JP S56118153A JP 2082280 A JP2082280 A JP 2082280A JP 2082280 A JP2082280 A JP 2082280A JP S56118153 A JPS56118153 A JP S56118153A
- Authority
- JP
- Japan
- Prior art keywords
- input
- bit
- processor
- bundle
- common line
- 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
Links
Classifications
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F11/00—Error detection; Error correction; Monitoring
- G06F11/22—Detection or location of defective computer hardware by testing during standby operation or during idle time, e.g. start-up testing
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Computer Hardware Design (AREA)
- Quality & Reliability (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Testing And Monitoring For Control Systems (AREA)
- Test And Diagnosis Of Digital Computers (AREA)
Abstract
PURPOSE:To make easy the maintenance and arrangement of input circuit and the failure detection, by turning off the common line of signal input in response to the control output of processor and turning on each signal input at a bundle. CONSTITUTION:The input section 1 of three-input and a processor 2 are provided with a digital input diagnostic section 3 having the functions to turn off the common line CL of the input section 1 and to turn on the input lines S1, S2, S3 at a bundle. In diagnosing the input section 1, the common line CL is off by the processor 2 by writing in ''0'' to the bit 0 of the output register TR and also to the bit 1 through the processor 2. When contacts SG1, SG2, SG3 are on, the bit 0, bit 1, and bit 2 of the input register RR are all a ''0''. Accordingly, in case of failure when the output of the gate G1 is fixed to high potential side, CL is off and the input is on at a bundle if fixed to low potential side, allowing to diagnose the failed bits for the bits written in the processor 2 for either ''1'' or ''0''.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2082280A JPS56118153A (en) | 1980-02-21 | 1980-02-21 | Digital input circuit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2082280A JPS56118153A (en) | 1980-02-21 | 1980-02-21 | Digital input circuit |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS56118153A true JPS56118153A (en) | 1981-09-17 |
Family
ID=12037723
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2082280A Pending JPS56118153A (en) | 1980-02-21 | 1980-02-21 | Digital input circuit |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS56118153A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH03276204A (en) * | 1990-03-23 | 1991-12-06 | Mitsubishi Electric Corp | Input system for monitoring state signal |
JP2020195260A (en) * | 2019-05-30 | 2020-12-03 | 三菱電機株式会社 | Protective relay device |
CN112444720A (en) * | 2019-08-30 | 2021-03-05 | 宁德时代新能源科技股份有限公司 | Detection circuit and detection method of electric control device |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5211840A (en) * | 1975-07-18 | 1977-01-29 | Hitachi Ltd | Diagnostic system of input-output control unit |
JPS5425135A (en) * | 1977-07-28 | 1979-02-24 | Toshiba Corp | Self-diagnostic system of digital controller |
JPS54122946A (en) * | 1978-03-17 | 1979-09-22 | Hitachi Ltd | Self diagnosis unit |
-
1980
- 1980-02-21 JP JP2082280A patent/JPS56118153A/en active Pending
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5211840A (en) * | 1975-07-18 | 1977-01-29 | Hitachi Ltd | Diagnostic system of input-output control unit |
JPS5425135A (en) * | 1977-07-28 | 1979-02-24 | Toshiba Corp | Self-diagnostic system of digital controller |
JPS54122946A (en) * | 1978-03-17 | 1979-09-22 | Hitachi Ltd | Self diagnosis unit |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH03276204A (en) * | 1990-03-23 | 1991-12-06 | Mitsubishi Electric Corp | Input system for monitoring state signal |
JP2020195260A (en) * | 2019-05-30 | 2020-12-03 | 三菱電機株式会社 | Protective relay device |
CN112444720A (en) * | 2019-08-30 | 2021-03-05 | 宁德时代新能源科技股份有限公司 | Detection circuit and detection method of electric control device |
US11435389B2 (en) | 2019-08-30 | 2022-09-06 | Contemporary Amperex Technology Co., Limited | Electrical control device detection circuit, detection method, and electric vehicle |
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