Registers – Coded record sensors – Particular sensor structure
Patent
1980-10-28
1982-12-14
Yusko, Donald J.
Registers
Coded record sensors
Particular sensor structure
34082522, G06K 1906, G06K 714, G11C 700
Patent
active
043639607
DESCRIPTION:
BRIEF SUMMARY
TECHNICAL FIELD
The present invention relates to a photoelectric write-only sequence controller provided with a program film or sheet as input means.
BACKGROUND ART
A conventional sequence controller having a writing means and a reading means is very unreasonable and expensive although it is used only for reading after the write-in of data. In order to remove such disadvantages, it is necessary be attempted to provide a sequence controller having a single function.
DISCLOSURE OF THE INVENTION
In accordance with the present invention, the sequence controller is divided into a write-only sequence controller and a read-only sequence controller. The write-only sequence controller is provided to write data in the read-only memory (EPROM) and the read-only sequence controller is provided with the EPROM and adapted to produce an output of data in the EPROM.
Since data may be written in a plurality of EPROMS by one write-only sequence controller, an economical control system may be provided.
Further, the conventional sequence controller is complicated to deal with a great variety of control objects and a skilled person is necessary for programming and modifying the data. In addition, the handling operation of the system is complicated, and a plurality of handling operations are required. For example, in order to program the data of 100 words.times.8 bits, key switches must be operated at least 200 times.
Accordingly, it is an object of the present invention to provide a sequence controller in which data programmings and modifications are very simple and easy for anybody having no special technical knowledge, and consequently secrets of the programming and modification may be maintained.
It is a further object of the present invention to provide a sequence controller which is of high fidelity, structured compactly and manufactured inexpensively.
To this end, a sequence control system of the present invention comprises a transparent program sheet bearing a plurality of data lines which are formed by any means such as adhesive attachment of opaque material and arranged in the longitudinal direction of the sheet.
The sequence controller allows a simple procedure of cutting and attaching opaque tape onto the transparent program sheet, and hence initial programming as well as modification of the program for any control sequence is extremely simple and easy.
The program sheet is inserted into the write-only sequence controller from one side, whereby machines may be controlled.
The sheet has a time chart formed by opaque adhesive tapes. The sheet is inserted into the device of the present invention and extracted. The data of 100 words.times.8 bits are written in a memory RAM built in the device, then the written data in the RAM is programmed automatically in an EPROM, after which the EPROM is removed.
The programmed EPROM is set in a read-only sequence controller, whereby various machines may be controlled.
The photoelectric write-only sequence controller of the present invention may be made into a light device having a weight of 450 gr and into a compact size. Thus, an economical controller may be provided for automatization of the machine and for energy saving.
BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 shows a transparent program sheet of a sequence controller according to the present invention;
FIG. 2 shows a time chart attached by opaque tape onto the transparent program sheet;
FIG. 3 shows a front view of the sequence controller;
FIG. 4 shows a back view of the sequence controller;
FIG. 5 shows a transverse cross-sectional view of the sequence controller;
FIG. 6 is a perspective view of the sequence controller;
FIG. 7 shows a circuit of a photo-electric switching array of a sheet reader;
FIG. 8 shows a circuit of the present invention using an EPROM operated by three power supply sources;
FIG. 9 is a timing diagram of program pulses;
FIG. 10 shows another embodiment of the program pulse generator;
FIG. 11 shows a timing diagram of a program pulse according to the circuit of FIG. 10;
FIG. 12 shows another emb
REFERENCES:
patent: 4056771 (1977-11-01), Lamar
patent: 4177377 (1979-12-01), Kuze
patent: 4195773 (1980-04-01), Ogden
LandOfFree
Photoelectric write-only sequence controller does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Photoelectric write-only sequence controller, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Photoelectric write-only sequence controller will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1202541