JPS55164917A - Initializing system - Google Patents
Initializing systemInfo
- Publication number
- JPS55164917A JPS55164917A JP7055379A JP7055379A JPS55164917A JP S55164917 A JPS55164917 A JP S55164917A JP 7055379 A JP7055379 A JP 7055379A JP 7055379 A JP7055379 A JP 7055379A JP S55164917 A JPS55164917 A JP S55164917A
- Authority
- JP
- Japan
- Prior art keywords
- switch
- initializing
- misoutput
- misinput
- disconnection
- 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 make easy the ON-line maintenance, by holding the initializing state until the initializing switch is OFF at the process input and output unit to prevent the misinput to CPU and misoutput to the plant.
CONSTITUTION: When the switch SW1 is ON, FF2 is reset through the gate G2 and gate G1 is stopped. Further, the disconnection of the process input and output unit PIO and the data bus line is made without giving effect to others. Further, after the end of repairment with disconnection, the unit 1 is connected to the data bus line while the switch SW1 is ON and the SW1 is OFF. Thus, the unit PIO holds the initializing state until the switch SW1 is OFF to prevent the misoutput to the plant and the misinput to CPU. Thus, the ON-line maintenance can be made easy.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7055379A JPS55164917A (en) | 1979-06-07 | 1979-06-07 | Initializing system |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7055379A JPS55164917A (en) | 1979-06-07 | 1979-06-07 | Initializing system |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS55164917A true JPS55164917A (en) | 1980-12-23 |
Family
ID=13434823
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP7055379A Pending JPS55164917A (en) | 1979-06-07 | 1979-06-07 | Initializing system |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS55164917A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS58189728A (en) * | 1982-04-28 | 1983-11-05 | Hitachi Ltd | Key input device |
JPS62147030U (en) * | 1987-02-25 | 1987-09-17 |
-
1979
- 1979-06-07 JP JP7055379A patent/JPS55164917A/en active Pending
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS58189728A (en) * | 1982-04-28 | 1983-11-05 | Hitachi Ltd | Key input device |
JPS62147030U (en) * | 1987-02-25 | 1987-09-17 | ||
JPH054033Y2 (en) * | 1987-02-25 | 1993-02-01 |
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