JPS5557961A - Annunciator - Google Patents
AnnunciatorInfo
- Publication number
- JPS5557961A JPS5557961A JP13198178A JP13198178A JPS5557961A JP S5557961 A JPS5557961 A JP S5557961A JP 13198178 A JP13198178 A JP 13198178A JP 13198178 A JP13198178 A JP 13198178A JP S5557961 A JPS5557961 A JP S5557961A
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- self
- detecting
- output
- signals
- 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 improve reliability of a system by indicating a fault by detecting the confirmation signal of self-diagnosis.
CONSTITUTION: By a main controller composed mainly of input scanning circuit 8, CPU1, and memories ROM2 and RAM3, a self-diagnostic program for checking its functions is executed at constant intervals of time to output comfirmation signals of it from output port 5. Then, fault information circuit 7 is separately provided which sends a fault information output on detecting intermittence of confirmation signals, so that abnormality would be caused, the circuit can indicate it rappidly.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13198178A JPS5557961A (en) | 1978-10-26 | 1978-10-26 | Annunciator |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13198178A JPS5557961A (en) | 1978-10-26 | 1978-10-26 | Annunciator |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5557961A true JPS5557961A (en) | 1980-04-30 |
Family
ID=15070748
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP13198178A Pending JPS5557961A (en) | 1978-10-26 | 1978-10-26 | Annunciator |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5557961A (en) |
-
1978
- 1978-10-26 JP JP13198178A patent/JPS5557961A/en active Pending
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