[특허]Programmable controller

Programmable controller 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	G05C-019/24 G06F-003/04
출원번호	US-0616860 (1975-09-25)
발명자 / 주소	Highberger Gary G. (Painesville OH)
출원인 / 주소	Reliance Electric Company (Cleveland OH 02)
인용정보	피인용 횟수 : 24 인용 특허 : 0

초록 ▼

A programmable system controller stores in memory a sequence of program words directly simulating a planar ladder diagram characterizing the desired operation of a controlled system. The ladder diagram is a set of n rung-by-m column arrays of contacts interconnected with particular controlled devices of the system. The program words are read out of the memory in a sequence to directly represent the ladder diagram on a rung-by-rung basis for each column. The controller includes an interface unit coupled to a set of input switches for providing switch signals that are indicative of the operating status of the machine. A data processing unit is provided with an accumulator having a plurality of at least n storage units respectively corresponding to each rung of the ladder diagram. In response to the program words and to the switch signals, the accumulator sequentially determines the states of the storage units according to whether the switch signals are indicative that a particular rung of one column of the ladder diagram can contribute towards operating the controlled device as it is connected in the ladder diagram. After the plurality of storage units have been conditioned according to the rungs in one column, the next column of the ladder diagram is considered for conditioning the storage units. After all columns of the ladder diagram have been considered, a preselected one of the plurality of storage units contains an output signal indicative of whether the controlled device should be operated. A more specific feature of the controller is the interface circuit which alternately provides asynchronous or synchronous input of the switch signals using a partitioned random access memory as a novel buffer register.

대표청구항 ▼

A sequence controller for selectively operating at least one controlled device in a controlled system in response to the operating status of a set of switches in the system, the switches being operated in response to operation of the system, and the operation of the system being characterized by a ladder diagram which represents a connection, in an n rung-by m column array, of the controlled device with a plurality of binary elements corresponding to said switches, comprising: (a) a system interface responsive to the switches for deriving switch signals having values which are indicative of the operating status of each of the switches; (b) program storage means responsive to a set of timing signals for storing and providing a sequence of program words which represents said connection of binary elements and controlled device in said ladder diagram, said sequence of program words thereby characterizing the desired operation of the controlled device; (c) data processing means for producing an output signal in response to the sequence of program words and to the switch signals for effecting operation of the selected controlled device, the data processing means including: (i) an accumulator having a plurality of at least n storage units individually conditionable in response to a set of processor signals, said storage units being effective to provide said output signal, (ii) process signal generating means responsive to the sequence of program words and to the switch signals for generating the set of processor signals and the set of timing signals, the processor signals representative of whether the values of the switch signals are indicative that the corresponding binary elements in the planar array would contribute towards operating said controlled device; and (iii) timing means responsive to said set of timing signals for selecting the storage unit of said accumulator to be conditioned by said processor signals, whereby the selected storage unit after having been conditioned by the processor signals is indicative whether the binary element corresponding to said storage unit would contribute, as determined by the value of the corresponding switch signals, towards operating the controlled device.

이 특허를 인용한 특허 (24)

Peterson Clyde O., Apparatus for solving ladder logic.
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Kudo Toichi (Yokohama JPX) Abe Takasi (Funabashi JPX) Ogawa Seiichiro (Ichikawa JPX), Arithmetic logic unit of a sequence controller.
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Izzo Joseph P. ; Whitsitt Steven L., Automatic polling for user interrupts in a programmable controller using relay ladder logic.
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Mager George E. (Manhattan Beach CA) Nelson Frank M. (Sherman Oaks CA) Reid Steven L. (Redondo Beach CA) Richardson Philip (Pacific Palisades CA) Rochat Vernon E. (Palos Verdes CA) Post Donald S. (Fa, Auxiliary ROM memory system.
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Quatse Jesse T. (2 Fifer Ave. #250 Corte Madera CA 94925), Boolean processor for a progammable controller.
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Tajima Shinobu (Inazawa JPX) Umeda Yasukazu (Inazawa JPX) Kamohara Toshiyuki (Inazawa JPX), Computer control system for selecting a desired control program from a plurality of control programs.
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Tajima Shinobu (Inazawa JPX) Umeda Yasukazu (Inazawa JPX) Kamohara Toshiyuki (Inazawa JPX), Computer control system for selecting a desired control program from a plurality of control programs.
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Benninger,David C., Device and method for discrete signal conditioning.
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Stehman Carl J. (LaGrange IL), Dialed number to function translator for telecommunications switching system control complex.
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Kintner Paul M. (Bayside WI), Integrated circuit controller programmable with unidirectional-logic instructions representative of sequential wire node.
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Berg, Joel; Tamminana, Krishna; Gattu, Jagadish, Ladder logic modeling and simulation.
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Pitroda Satyan G. (Villa Park IL) Fechalos William A. (Naperville IL) Stehman Carl J. (LaGrange IL), Microprocessor control complex for a telecommunication switching system.
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Henry Donald E. (Bettendorf IA) Murrell Thomas A. (Urbana IL) Schilt Marvin H. (Bettendorf IA) Weaver Alfred C. (Champaign IL), Process control system that controls its outputs according to the results of successive analysis of the vertical input c.
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Hill Lawrence W. (Arlington MA) Stoodley III Thomas J. (Lowell MA) Malcolm Ronald (Andover MA), Programmable controller.
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Quatse Jesse T. (27 Venado Dr. Tiburon CA 94920), Programmable controller (“PC”) with co-processing architecture.
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Martin Jonathan F. (Clinton Township ; Hunterdon County MI) Cherba David M. (Pontiac MI), Programmable dual stack relay ladder diagram line solver and programming panel therefor with prompter.
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Bradley John C. (Saint Clair Shores MI) Cherba David M. (Pontiac MI), Programmable dual stack relay ladder diagram line solver with shift register.
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Cherba David M. (Pontiac MI), Programmable dual stack relay ladder line solver and programming panel therefor.
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Sasaki Junichi (Numazu JPX) Okayama Yoshihiko (Numazu JPX), Programmable sequence control method and devices.
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Suzuki Isao (Okazaki JPX) Yomogida Toshihiko (Kariya JPX) Kato Sadamu (Takahama JPX), Programmable sequence controller with auxiliary function decoding circuit.
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Kurokawa Naohiro (Shibata JPX) Abe Ryoichi (Shibata JPX) Fujiwara Tatsuo (Niigata JPX), Sequence controller.
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Heeger Stephen E. (Evansville IN), Sequence controller with microprocessor.
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Heeger Stephen E. (Evansville IN), Sequence controller with microprocessor.
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Kuze Yoshikazu (31-3 ; Higashimagome 1-chome ; Ohta-ku Tokyo JPX), Write-only sequence controller.
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IPC	Description
A	생활필수품
A62	인명구조; 소방(사다리 E06C)
A62B	인명구조용의 기구, 장치 또는 방법(특히 의료용에 사용되는 밸브 A61M 39/00; 특히 물에서 쓰이는 인명구조 장치 또는 방법 B63C 9/00; 잠수장비 B63C 11/00; 특히 항공기에 쓰는 것, 예. 낙하산, 투출좌석 B64D; 특히 광산에서 쓰이는 구조장치 E21F 11/00)
A62B-1/08	.. 윈치 또는 풀리에 제동기구가 있는 것

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Programmable controller 원문보기

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Programmable controller 원문보기

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이 특허를 인용한 특허 (24)

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