JPS57117001A - Control device - Google Patents
Control deviceInfo
- Publication number
- JPS57117001A JPS57117001A JP283781A JP283781A JPS57117001A JP S57117001 A JPS57117001 A JP S57117001A JP 283781 A JP283781 A JP 283781A JP 283781 A JP283781 A JP 283781A JP S57117001 A JPS57117001 A JP S57117001A
- Authority
- JP
- Japan
- Prior art keywords
- area
- contents
- changed
- ram
- constituted
- 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
Classifications
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11C—STATIC STORES
- G11C7/00—Arrangements for writing information into, or reading information out from, a digital store
Landscapes
- Safety Devices In Control Systems (AREA)
Abstract
PURPOSE:To change the contents of a memory in an on-line state, by providing a fixed area of PROM, a storage area and a setting area of RAM, and a half- fixed area of a nonvolatile RAM, and transferring the changed contents of the setting area to the half-fixed area. CONSTITUTION:A fixed area 71 constituted of a PROM, a storage area 72 constituted of an RAM, for storing a data information required for a program, a setting area 73 constituted of an RAM, for storing a table, etc., and a semifixed area 73 constituted of a nonvolatile RAM, for saving the same contents as those of the area 73 are provided on a memory area 7 of a control device 8 using an MPU. In case when contents of the area 73 are changed, a data changing signal 81 is applied to a control device, only a function of an updating program in the area 71 is stopped, a data in the area 73 is changed in an operating state, and the changed contents are confirmed. If necessary, the contents are returned to the original state before updating by releasing the signal 81. Also, the changed part is used as a subsequent data by applying a data fixing signal 82 and transferring the contents of the area 73 to the area 74.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP283781A JPS57117001A (en) | 1981-01-12 | 1981-01-12 | Control device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP283781A JPS57117001A (en) | 1981-01-12 | 1981-01-12 | Control device |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS57117001A true JPS57117001A (en) | 1982-07-21 |
Family
ID=11540521
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP283781A Pending JPS57117001A (en) | 1981-01-12 | 1981-01-12 | Control device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS57117001A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS59114602A (en) * | 1982-12-22 | 1984-07-02 | Toshiba Corp | Programmable controller |
-
1981
- 1981-01-12 JP JP283781A patent/JPS57117001A/en active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS59114602A (en) * | 1982-12-22 | 1984-07-02 | Toshiba Corp | Programmable controller |
JPH0410081B2 (en) * | 1982-12-22 | 1992-02-24 |
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