JPS5585913A - Sequence control unit - Google Patents
Sequence control unitInfo
- Publication number
- JPS5585913A JPS5585913A JP15850978A JP15850978A JPS5585913A JP S5585913 A JPS5585913 A JP S5585913A JP 15850978 A JP15850978 A JP 15850978A JP 15850978 A JP15850978 A JP 15850978A JP S5585913 A JPS5585913 A JP S5585913A
- Authority
- JP
- Japan
- Prior art keywords
- input
- area
- output section
- output
- inputted
- 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 enable to discriminate the defect in either of input and output section or external unit easily, and to diagnose the input and output section, by adding the high speed selector switch, level converter, and pattern generator and test input area. CONSTITUTION:When the failure diagnosis of input and output section 5 is desired, high speed switches 23, 24, 26, 27 are connected to T1, T2, T3, T4 side. Thus, the signal from the pattern generator 22 is inputted to the test input area 29 via the output buffer 11, transistor 12, fuse 13, level converter 25, and input buffer 15. When the pattern generator 22 outputs ''0'' state, it is inputted to the ''0'' state area 30, and when the ''1'' state is outputted, it is inputted to the ''1'' area 31, thus the high speed selection switch E32 is selected. Thus, when the input and output section 5 is correctly operated, the content of the test areas 30, 31 are respectively ''0'' and ''1''. If different, the input and output circuit of the input and output point is in failure.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15850978A JPS5585913A (en) | 1978-12-25 | 1978-12-25 | Sequence control unit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15850978A JPS5585913A (en) | 1978-12-25 | 1978-12-25 | Sequence control unit |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5585913A true JPS5585913A (en) | 1980-06-28 |
Family
ID=15673280
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP15850978A Pending JPS5585913A (en) | 1978-12-25 | 1978-12-25 | Sequence control unit |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5585913A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS57189209A (en) * | 1981-05-12 | 1982-11-20 | Oki Electric Ind Co Ltd | Process input and output device |
-
1978
- 1978-12-25 JP JP15850978A patent/JPS5585913A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS57189209A (en) * | 1981-05-12 | 1982-11-20 | Oki Electric Ind Co Ltd | Process input and output device |
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