JPS57143606A - Scanning type programmable controller - Google Patents
Scanning type programmable controllerInfo
- Publication number
- JPS57143606A JPS57143606A JP3012581A JP3012581A JPS57143606A JP S57143606 A JPS57143606 A JP S57143606A JP 3012581 A JP3012581 A JP 3012581A JP 3012581 A JP3012581 A JP 3012581A JP S57143606 A JPS57143606 A JP S57143606A
- Authority
- JP
- Japan
- Prior art keywords
- input
- output
- cpu4
- execution
- operations
- 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
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
- G05B19/05—Programmable logic controllers, e.g. simulating logic interconnections of signals according to ladder diagrams or function charts
- G05B19/058—Safety, monitoring
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B2219/00—Program-control systems
- G05B2219/10—Plc systems
- G05B2219/14—Plc safety
- G05B2219/14086—Watch dog
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3012581A JPS57143606A (en) | 1981-03-03 | 1981-03-03 | Scanning type programmable controller |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3012581A JPS57143606A (en) | 1981-03-03 | 1981-03-03 | Scanning type programmable controller |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS57143606A true JPS57143606A (en) | 1982-09-04 |
Family
ID=12295050
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP3012581A Pending JPS57143606A (en) | 1981-03-03 | 1981-03-03 | Scanning type programmable controller |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS57143606A (ja) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS60142436A (ja) * | 1983-12-28 | 1985-07-27 | Mitsubishi Agricult Mach Co Ltd | 農機におけるマイクロコンピユ−タの異常表示方式 |
EP0176655A2 (en) * | 1984-10-03 | 1986-04-09 | Hitachi, Ltd. | Programmable controller |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS49109783A (ja) * | 1973-02-21 | 1974-10-18 | ||
JPS5255347A (en) * | 1975-10-30 | 1977-05-06 | Nippon Denso Co Ltd | Fail-safe system of control computer |
JPS54120378A (en) * | 1978-03-09 | 1979-09-18 | Toyoda Mach Works Ltd | Sequence controller |
-
1981
- 1981-03-03 JP JP3012581A patent/JPS57143606A/ja active Pending
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS49109783A (ja) * | 1973-02-21 | 1974-10-18 | ||
JPS5255347A (en) * | 1975-10-30 | 1977-05-06 | Nippon Denso Co Ltd | Fail-safe system of control computer |
JPS54120378A (en) * | 1978-03-09 | 1979-09-18 | Toyoda Mach Works Ltd | Sequence controller |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS60142436A (ja) * | 1983-12-28 | 1985-07-27 | Mitsubishi Agricult Mach Co Ltd | 農機におけるマイクロコンピユ−タの異常表示方式 |
EP0176655A2 (en) * | 1984-10-03 | 1986-04-09 | Hitachi, Ltd. | Programmable controller |
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