JPS5688520A - Malfunction preventing system - Google Patents
Malfunction preventing systemInfo
- Publication number
- JPS5688520A JPS5688520A JP16655479A JP16655479A JPS5688520A JP S5688520 A JPS5688520 A JP S5688520A JP 16655479 A JP16655479 A JP 16655479A JP 16655479 A JP16655479 A JP 16655479A JP S5688520 A JPS5688520 A JP S5688520A
- Authority
- JP
- Japan
- Prior art keywords
- voltage
- controlled
- detection line
- input
- potential
- 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
Abstract
PURPOSE: To prevent a fault due to malfunction of a device to be controlled even if malfunction occurs at a controller side, by providing a signal line that transmits the power voltage of a logic circuit in the controller to the device to be controlled and also by providing the device to be controlled with a means of detecting the potential of the signal line.
CONSTITUTION: Logic circuit 2 of the controller, receiving an operating voltage from power source 1, sends a control signal to driving circuit 4 via interface IF31, bus 6, and input-output side IF32 of a device to be controlled, such as a line printer, to drive mechanism part 5. The power voltage of the controller side is applied to the input-output device to be controlled by way of power voltage detection line 7. At the input-output device side, specific supply voltage V for the input-output device itself can be applied to detection line 7 via diode D2 and voltage source Vcc higher than a prescribed voltage is connected via resistance R so as to hold detection line 7 at the voltage. The potential of detection line 7 is compared by comparator 8 with a prescribed potential obtained by resistances r1 and r2 and when the potential of detection line 7 is lower, control signal 9 is sent to circuit 4 to suppress the driving operation of mechanism part 8.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP16655479A JPS5688520A (en) | 1979-12-21 | 1979-12-21 | Malfunction preventing system |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP16655479A JPS5688520A (en) | 1979-12-21 | 1979-12-21 | Malfunction preventing system |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5688520A true JPS5688520A (en) | 1981-07-18 |
Family
ID=15833407
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP16655479A Pending JPS5688520A (en) | 1979-12-21 | 1979-12-21 | Malfunction preventing system |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5688520A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6082724U (en) * | 1983-11-15 | 1985-06-07 | 岩崎通信機株式会社 | Processor stop state detection and display device in magnetic printing device |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4818041B1 (en) * | 1967-01-23 | 1973-06-02 |
-
1979
- 1979-12-21 JP JP16655479A patent/JPS5688520A/en active Pending
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4818041B1 (en) * | 1967-01-23 | 1973-06-02 |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6082724U (en) * | 1983-11-15 | 1985-06-07 | 岩崎通信機株式会社 | Processor stop state detection and display device in magnetic printing device |
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