US4550278A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Control device
Assignee: Mitsubishi Electric Corp
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Filing: 1982-07-14
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Granted: 1985-10-29
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Expires: 2002-07-14
Abstract
Abstract A control unit is provided with a memory unit for storing data representative of errors occurring in the system, as well as the order in which sequential errors occurred and the number of occurrences of the errors. An error "history" may be displayed from these data, to assist in pinpointing the cause of the trouble.
Inventors
- 👤 Kimio Yamanaka
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 18:38
CPC Classifications
G; G06; G06F; G06F11/00; G06F11/07; G06F11/0703; G06F11/0751; G06F11/0754; G06F11/076; G05; G05B; G05B19/00; G05B19/02; G05B19/04; G05B19/042; G05B19/0428; G06F11/0706; G06F11/0748; G06F11/0766; G06F11/0772; G06F11/079; G06F11/30; G06F11/32; G06F11/324; G06F11/327; G05B2219/00; G05B2219/20; G05B2219/24; G05B2219/24093; G05B2219/24095; G05B2219/24096; G06F11/325; G06F11/326
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
93 words
In a control device having a control memory for temporarily storing data, the operation of which is controlled by a program, and a process I/O unit serving as an interface for external data, the improvement comprising; memory means for storing trouble data representative of errors and abnormal operations in said memory and process I/O unit, in combination with the sequence of occurrence of said errors and the number of occurrences of said errors; and means for editing and displaying said trouble data stored in said memory section, together with an error occurrence history.
Claim 2
Dependent Claim
93 words
In a control device having a control memory for temporarily storing data, the operation of which is controlled by a program, and a process I/O unit serving as an interface for external data, the improvement comprising; memory means for storing trouble data representative of errors and abnormal operations in said memory and process I/O unit, in combination with the sequence of occurrence of said errors and the number of occurrences of said errors; and means for editing and displaying said trouble data stored in said memory section, together with an error occurrence history.
Claim 3
Dependent Claim
24 words
A device as claimed in claim 1, in which a number of said memory means is equal to a number of different error factors.
Claim 4
Dependent Claim
54 words
A device as claimed in claim 2, in which said memory means includes means storing an error pointer indicating an error occurrence order, an address of a program concerning an error, an address of a bus concerning an error, a read/write designation, the number of times of occurrence of the errors and data contents.
Claim 5
Dependent Claim
30 words
A device as claimed in claim 1, in which said means for editing and displaying includes means for displaying an error pointer and the number of occurrences of particular errors.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-10-28 | 1989-04-29 | 1989-10-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-10-28 | 1993-04-29 | 1993-10-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-10-28 | 1997-04-29 | 1997-10-29 | $7700.00 | Window Closed / Lapsed |