JPS5657133A - Fault diagnostic system in decentralized control system - Google Patents
Fault diagnostic system in decentralized control systemInfo
- Publication number
- JPS5657133A JPS5657133A JP13192779A JP13192779A JPS5657133A JP S5657133 A JPS5657133 A JP S5657133A JP 13192779 A JP13192779 A JP 13192779A JP 13192779 A JP13192779 A JP 13192779A JP S5657133 A JPS5657133 A JP S5657133A
- Authority
- JP
- Japan
- Prior art keywords
- signal
- input
- cpu10
- fault
- normal operation
- 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
- Multi Processors (AREA)
- Test And Diagnosis Of Digital Computers (AREA)
Abstract
PURPOSE: To make it possible to decide a fault surely with a comparatively simple constitution, by causing the CPU to diagnose the fault on a basis of change of the normal operation signal of the CPU and change of the transmission and receiving signal of the control station.
CONSTITUTION: Normal operation signal 6 of control station 3 is generated by using input signal 7 obtained from communication line 1, output signal 8 to communication line 1, and normal operation signal 16 from CPU10 as the input in fault detecting circuit 5. This signal 6 operates the contact of relay 4, and at the normalcy time, relay 4 is so operated that station 3 may be included in communication line 1. Signal 16 is input to multivibrator 50; and if the signal is changed in the time section determined by the time constant of this circuit, output signal 17 is held in the 1 state. This signal is input to the IRQ terminal as interrupt signal 18 for CPU10. When this interrupt is repeated continuously up to a prescribed frequency, it is confirmed whether an abnormal endless loop is generated in the program or not, and CPU10 is stopped if anomaly is detected.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13192779A JPS5657133A (en) | 1979-10-15 | 1979-10-15 | Fault diagnostic system in decentralized control system |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13192779A JPS5657133A (en) | 1979-10-15 | 1979-10-15 | Fault diagnostic system in decentralized control system |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5657133A true JPS5657133A (en) | 1981-05-19 |
Family
ID=15069451
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP13192779A Pending JPS5657133A (en) | 1979-10-15 | 1979-10-15 | Fault diagnostic system in decentralized control system |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5657133A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0671024A (en) * | 1993-08-06 | 1994-03-15 | Daiichi Shokai Co Ltd | Pachinko game machine controller |
-
1979
- 1979-10-15 JP JP13192779A patent/JPS5657133A/en active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0671024A (en) * | 1993-08-06 | 1994-03-15 | Daiichi Shokai Co Ltd | Pachinko game machine controller |
JPH06102099B2 (en) * | 1993-08-06 | 1994-12-14 | 株式会社大一商会 | Pachinko machine controller |
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