US3753246A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Printer adapted for operation with a programmable controller
Assignee: Allen Bradley Co LLC
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Filing: 1971-08-27
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Granted: 1973-08-14
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Expires: 1991-08-27
Abstract
Abstract A printer is attached to a programmable controller to read and record the program stored in its memory. The clock pulse generator in the programmable controller is disabled and clock pulses are generated by a central controller in the printer. Each clock pulse reads an instruction from the controller memory which instruction is decoded by the printer to select symbols on a digital printer. The digital printer visually records the instruction in response to a print command signal from the central controller, after which another clock pulse is generated to read the next instruction from memory. A
Inventors
- 👤 W Kiffmeyer
- 👤 D Sackman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 20:12
CPC Classifications
G; G05; G05B; G05B19/00; G05B19/02; G05B19/04; G05B19/05; G05B19/056; G11; G11C; G11C17/00; G11C17/08; G05B2219/00; G05B2219/10; G05B2219/13; G05B2219/13039
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
176 words
A printer connectable to a programmable controller having a memory matrix containing a program stored as a series of one-word instructions which are read out one at a time in response to clock pulses produced by a clock pulse generator, the combination comprising: a digital printer which visually records a line containing a plurality of selected symbols when a print command signal is received; decoder means connected to the memory matrix of the programmable controller to receive each instruction read from said memory matrix and connected to said digital printer to select symbols corresponding to the received instruction; switch means for disconnecting said clock pulse generator from said memory matrix; and a central controller connected to said digital printer and connected to said programmable controller, said central conTroller including first means which generates a clock pulse to said programmable controller causing an instruction to be read out of said memory matrix, and second means which generates a print command signal to said signal printer causing the instruction read from the memory matrix to be visually recorded.
Claim 2
Dependent Claim
176 words
A printer connectable to a programmable controller having a memory matrix containing a program stored as a series of one-word instructions which are read out one at a time in response to clock pulses produced by a clock pulse generator, the combination comprising: a digital printer which visually records a line containing a plurality of selected symbols when a print command signal is received; decoder means connected to the memory matrix of the programmable controller to receive each instruction read from said memory matrix and connected to said digital printer to select symbols corresponding to the received instruction; switch means for disconnecting said clock pulse generator from said memory matrix; and a central controller connected to said digital printer and connected to said programmable controller, said central conTroller including first means which generates a clock pulse to said programmable controller causing an instruction to be read out of said memory matrix, and second means which generates a print command signal to said signal printer causing the instruction read from the memory matrix to be visually recorded.
Claim 3
Dependent Claim
68 words
The combination, as recited in claim 1 wherein said first means includes a monoshot circuit which generates a clock pulse to said programmable controller, and said second means includes delay means which is connected to receive the clock pulse generated by said monoshot circuit and which is connected to generate a print command signal to said digital printer a predetermined time interval after reception of each clock pulse.
Claim 4
Dependent Claim
74 words
The combination, as recited in claim 2, which includes a line number counter connected to receive the clock pulses generated by said monoshot circuit and connected to the digital printer to select from a first set of symbols, said line number counter being operable to count the number of clock pulses generated by the monoshot circuit while a program is being read out of the memory matrix and to select symbols indicating this count.
Claim 5
Dependent Claim
99 words
The combination, as recited in claim 1 which includes a symbol table and decoder circuit connected to the memory matrix of the programmable controller to receive an address code in each instruction read from said memory matrix and connected to said digital printer to select from a second set of symbols, wherein said symbol table and decoder circuit includes a read-only memory which generates a distinct preset digital signal to the digital printer for each address code received from said memory matrix whereby a distinct set of symbols is selected for recording by each of these preset digital signals.
References Cited (Backward Citations)
US3436732A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-08-13 | 1977-02-12 | 1977-08-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-08-13 | 1981-02-12 | 1981-08-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-08-13 | 1985-02-12 | 1985-08-14 | $7700.00 | Window Closed / Lapsed |