Search Images Maps Play YouTube News Gmail Drive More »
Sign in
Screen reader users: click this link for accessible mode. Accessible mode has the same essential features but works better with your reader.


  1. Advanced Patent Search
Publication numberUS3868648 A
Publication typeGrant
Publication dateFeb 25, 1975
Filing dateJul 5, 1973
Priority dateJul 5, 1973
Publication numberUS 3868648 A, US 3868648A, US-A-3868648, US3868648 A, US3868648A
InventorsLevin Herman
Original AssigneeInd Dynamics Inc
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Programmable process and production control systems
US 3868648 A
Abstract  available in
Previous page
Next page
Claims  available in
Description  (OCR text may contain errors)

United States Patent [19 1 Levin [11] 3,868,648 [451 Feb. 25, 1975 PROGRAMMABLE PROCESS AND [73] Assignee: Industrial Dynamics, Inc., Fort Collins, C010.

22 Filed: July 5,1973 21 Appl.No.:376,827'

[52] U.S. Cl. 340/l72.5, 235/151.1 [51] int. Cl. G06! 15/46 [58] Field of Search 340/172 S; 235/151.1

[56] References Cited UNITED STATES PATENTS 3,400,374 9/1968 Schumann 340/172 S 3,566,362 2/1971 Taylor 340/172 S 3,651,314 3/1972 Kosen 235/151.ll 3,686,639 8/1972 Fletcher 340/172 S 3,689,892 9/1972 Glenn 340/172 S 3,701,113 10/1972 Chace 340/172 S 3,719,931 3/1973 Schroeder 340/172 S 3,731,280 5/1973 Shevlin 340/172 S 3,753,243 8/1973 Ricketts 340/172 S 3,761,882 9/1973 Bartlett 340/172 S OTHER PUBLlCATlONS Bulletin, PMC 1750 Programmable Matrix Controller, Pub. SD23, Allen Bradley Corp., August 1972. Programming Information Bulletin 1750 PMC, Pub. SD26, Allen Bradley Corp., June 1972.

Comparison Circuit Expendable Comparison Circuit E/CS1 G. Lapidus, Programmable Logic Controllers- Painless Programming to Replace the Relay Bank, Control Engineering, April 1971, pp. 49-60.

N. Andreiev, Programmable Logic Controllers-An Update, Control Engineering, Sept. 1972, pp. 45-47. Program Sequence Controller, Pub. SM452KCC, Square D. Company, Nov. 1972.

Primary Examiner-Gareth D. Shaw Assistant Examiner-James D. Thomas Attorney, Agent, or Firm-Hugh H. Drake [57] ABSTRACT I rality of external, internal and time signals in order to determine the development of the combination of input signals. Included in the overall arrangement is a wide range of selection with respect to types of inputs and types of outputs as well as permitting choice between numerous different inter-coordinated responses.

13 Claims, 25 DrawingFi'gures PATENTED 3' 868 648 SHEET 01 HF 18 Fig.

mimww w 2.868.648

SHEET 0% 0F 18 WSW INPUTS 4 2 1 IE 1% @/\@|EVNT T L@ 1m IE-JIREs T [IE E9 IE @lsm HE E [E IE DIRECT EMERGENCY 5% QT 39 IE) [E9 E9 E15 m a B Q E1883 o 9 T r ml El E] a E] @1 m E 7 7 5m 8 a a a a [H 511 DIRECT EIBQE;

SHEET 0901 18 SRX Stop 8| Emerg. Stop INPUTS STATES E Event EC Enable Count 8 Start DC Disable Count R Reset 8 Emerg. Reset RC Reset Count Fig.

PATENIEUFEB25|915 SHEET IBM 18 PROGRAMMABLE PROCESS AND PRODUCTION CONTROL SYSTEMS The present invention pertains to programmable process and production control systems. More particularly, it relates to programmable process control systems which exhibit capability of complex control function while yet exhibiting simplicity of set up and operation.

A typical process in which automatic control is desired is a flow-solder station for electronic printed circuits. It is desired to use an optimum amount of flux and to complete as many printed boards per minute as practically possible. However, the duration and amount of flux applied, and the proper rate of the conveyor, varieswith different types of printed boards. Without automatic control of some sort, optimum operation requires that a skilled individual be present to reset each of the station functions each time a new board is to be processed. Of course, that is an uneconomical approach.

Quite apparently, a general purpose computer may be programmed so as to respond to information indicating the kind of board under process at any given time and thereupon serve to control the station function as ordered by its programming. However, this approach requires the inclusion in the overall system of peripheral or interface equipment between the process stations and the computer. It also requires the services of a trained computer programmer in order to feed the computer with the necessary information in the proper language.

It is, accordingly, a general object of the present invention to provide a programmable process and production control center which overcomes the aforenoted disadvantages and deficiencies.

A more specific object of the present invention is to provide a controller which requires no external input- /output or interface equipment and no knowledge of computer programming in order to obtain satisfactory operation.

Another objectof the present invention is to provide a controller in which control functions may be changed merely by the insertion of an appropriately punched or otherwise marked program card.

A further object of the present invention is to provide a controller which features a wide range of flexibility and adaptability.

Still another object of the present invention is to provide a controller that utilizes, as a programmable readonly-memory, an inexpensive tabulation card that is replaceable, reusable and economically disposable.

A still further object of the present invention is to provide a controller with a memory that is totally accessed instead of being only address accessed.

In accordance with the invention, a programmable process and production control center includes means for developing an output signal in response to the occurrence of magnitude of one of time, number of events, and change of character together with means for governing the operation of the development means in response to a combination of input signals. Selectively fixed totally-and-simultaneously accessed passive self-decoding read-only memory means responds to a plurality of incoming signals for defining and determining the development of the combination of input signals. Various features include internal options of types of input and output signals, highly flexible selectible ex- FIG. 1 is a front elevational view of the exterior of a programmable process and production control center; FIG. la is a separated isometric view of a card reader specifically implemented for use in the control center of FIG. 1;

FIG. lb is an enlarged fragmentary cross-sectional view of the implemented form of card reader shown in FIGS. 1 and la;

FIG. 10 is a front view of a decoding platen incorporated into the card reader of the preceding figures;

FIG. 2 is an enlarged rear elevational view of the same control center;

FIG. 3 is a functional diagram of one embodiment of the present invention;

FIG. 4 is a functional diagram of an enhanced embodiment of the present invention;

FIG. 5 is'a pictorial representation of a control card utilized in connection with the embodiments of the earlier figures; 1

FIG. 6 is a functional block diagram of an embodiment of the present invention;

FIG. 7 illustrates the input control logic employed in the system of FIG. 6;

FIG. 8 depicts a block diagram of one version of the embodiment of FIG. 6;

FIGS. 9a, 9b and 9c are schematic diagrams of different input options included in connection with the embodiments of the previous figures;

FIG. 10 is a schematic diagram of a portion of the apparatus shown in FIG. 8;

FIG. 11 is a schematic diagram of another portion of the apparatus shown in FIG. 8;

FIG. 12 is a schematic diagram of still another portion of the apparatus. shown in FIG. 8;

FIG. 13 is a schematic diagram of a further portion of the apparatus shown in FIG. 8;

FIGS. 14a, 14b, 14c and 14d are schematic diagrams of various output options available in'connection with the apparatus of the preceding figures;

FIG. 15 is a schematic diagram of yet another portion of the apparatus of FIG. 8;

FIG. 16 is a schematic diagram of a still further portion of the apparatus shown in FIG. 8; and

FIG. 17 is a schematic diagram .of a final portion of the apparatus depicted in FIG. 8.

In order more readily to understand and appreciate details which will follow, initial consideration will be directed to an external view of the apparatus, reference also being made to certain features of flexibility and to various kinds of input and output signals which desirably are to be received or produced. Thus, FIG. I depicts the front panel of a presently preferred version of the subject programmable control center. Included on the front panel are a card reader 20, a key-operated main-power switch 22 and a sub-panel 24 in which are mounted a plurality of push buttons 26 distributed in an

Patent Citations
Cited PatentFiling datePublication dateApplicantTitle
US3400374 *Jun 16, 1965Sep 3, 1968Robertshaw Controls CoComputerized control systems
US3566362 *Jul 15, 1968Feb 23, 1971Alan E TaylorProgram execution controller
US3651314 *Jan 22, 1970Mar 21, 1972Allen Bradley CoFeedrate computer using a read only memory
US3686639 *Dec 11, 1969Aug 22, 1972Modicon CorpDigital computer-industrial controller system and apparatus
US3689892 *Mar 18, 1970Sep 5, 1972Electroglas IncElectronic control apparatus having learn and automatic operate modes
US3701113 *Aug 13, 1971Oct 24, 1972Digital Equipment CorpAnalyzer for sequencer controller
US3719931 *Apr 29, 1971Mar 6, 1973Bryant Grinder CorpApparatus for controlling machine functions
US3731280 *Mar 16, 1972May 1, 1973Varisystems CorpProgrammable controller
US3753243 *Apr 20, 1972Aug 14, 1973Digital Equipment CorpProgrammable machine controller
US3761882 *Dec 1, 1971Sep 25, 1973Struthers DunnProcess control computer
Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US4064394 *May 28, 1975Dec 20, 1977American Chain & Cable Company, Inc.Electronic digital process controller having simulated analog control functions
US4070702 *Mar 26, 1976Jan 24, 1978Allan-Bradley CompanyContact histogram for programmable controller
US4187550 *Dec 17, 1976Feb 5, 1980Investigacion y Desarrollo de Nuevas Technicas para Automatismo, S.A. (I.D.T.A., S.A.)Multiple parameter processing and programming system
US4292666 *Apr 12, 1978Sep 29, 1981Modicon Div. Gould Inc.Programmable controller
US4377853 *Sep 9, 1980Mar 22, 1983Burroughs CorporationPeripheral controller with segmented memory buffer for interfacing 80 column card reader with host computer
US4418398 *Jun 10, 1982Nov 29, 1983General Electric CompanyManual reset control circuit for microprocessor controlled washing appliance
US4454596 *Jan 13, 1982Jun 12, 1984Reinhold WunschFree-programmable, modular control system with integrated user definable display and operating devices
US4698774 *Sep 27, 1985Oct 6, 1987Kabushiki Kaisha Tamura SeisakushoMethod of and apparatus for controlling automatic soldering system
US5339499 *Feb 16, 1993Aug 23, 1994Velcro Industries B.V.Hook design for a hook and loop fastener
US6457133 *Jul 6, 1999Sep 24, 2002Fujitsu LimitedAutomatic transaction apparatus
US6864859 *Mar 30, 1999Mar 8, 2005Samsung Electronics Co., Ltd.Apparatus for inputting and detecting a display data channel in manufacturing a monitor
US7909699 *Jun 27, 2002Mar 22, 2011IgtScan based configuration control in a gaming environment
US20040002379 *Jun 27, 2002Jan 1, 2004IgtScan based configuration control in a gaming environment
US20110264251 *Feb 15, 2011Oct 27, 2011Siemens AktiengesellschaftElectronic work instruction configured for isa-95 standard
U.S. Classification700/95
International ClassificationG05B19/14, G05B19/04
Cooperative ClassificationG05B19/14
European ClassificationG05B19/14