JPS5657103A - Preventing device for erroneous control of controlling computer - Google Patents
Preventing device for erroneous control of controlling computerInfo
- Publication number
- JPS5657103A JPS5657103A JP13298279A JP13298279A JPS5657103A JP S5657103 A JPS5657103 A JP S5657103A JP 13298279 A JP13298279 A JP 13298279A JP 13298279 A JP13298279 A JP 13298279A JP S5657103 A JPS5657103 A JP S5657103A
- Authority
- JP
- Japan
- Prior art keywords
- relay
- anomaly
- contact
- erroneous control
- control
- 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
Landscapes
- Safety Devices In Control Systems (AREA)
Abstract
PURPOSE: To make it possible to prevent efficiently erroneous control, by monitoring periodically whether control command logic, input point information of the input device, and output point information of the output device are present or not respectively.
CONSTITUTION: In computer 1, three elements, namely, control command logic, input point 12 of relay 6 in the input device, and output point 11 of relay 6 in the output device are monitored. If one or two of these three elements do not exist, anomaly is decided, and contact 7A of relay 7 for erroneous control prevention is turned off, and contact 8A of relay 8 for anomaly detection is closed to display anomaly of the input device, the output device, and so on. Since contact 7A is turned off for anomaly in this manner, operation commands (electric power applying) to control device 5 are not issued independently of the switching state of contact 6B of relay 6. As a result, erroneous control for anomaly is prevented. Thus, erroneous control can be prevented efficiently.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13298279A JPS5657103A (en) | 1979-10-17 | 1979-10-17 | Preventing device for erroneous control of controlling computer |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13298279A JPS5657103A (en) | 1979-10-17 | 1979-10-17 | Preventing device for erroneous control of controlling computer |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5657103A true JPS5657103A (en) | 1981-05-19 |
Family
ID=15094013
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP13298279A Pending JPS5657103A (en) | 1979-10-17 | 1979-10-17 | Preventing device for erroneous control of controlling computer |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5657103A (en) |
-
1979
- 1979-10-17 JP JP13298279A patent/JPS5657103A/en active Pending
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