JPS603211B2 - sequence programmer - Google Patents

Description

[Detailed Description of the Invention] This invention uses a non-volatile RAM as each storage element for storing a user's program, and makes it possible to easily replace the entire storage circuit made up of these storage elements together with the circuit board. A step-by-step sequence programmer (hereinafter abbreviated as a step-by-step sequencer) using a stored program method.

) regarding. Knitting machines that can knit various patterns with one machine, machine tools that can process various shapes with one machine, and machines with different compositions by varying the amount of chemicals injected in each process. Like a chemical plant that can manufacture chemical products, etc.
In order to control machinery or equipment using a construction sequencer, which allows you to obtain various products simply by changing the control specifications, and to quickly change the control specifications, it is necessary to store each control specification in advance in the user's program memory. This usually requires a huge amount of memory capacity, which may not be able to be processed by the capabilities of a so-called general-purpose sequencer.

This invention was made to solve the above-mentioned problems, and its purpose is to solve the problem when multiple control specifications are set in advance for the same equipment or equipment, and among these control specifications, It is an object of the present invention to provide a stored program type step-type sequencer suitable for controlling the above-mentioned equipment or facilities according to one control specification selected from the above.

Hereinafter, a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.

First, to briefly explain the walk-through type sequencer 1 according to this embodiment, 2, 2, . . . are input terminals 3 for receiving binary signals emitted from an external signal source such as a limit switch.
3... are output terminals that issue binary outputs to external devices such as relays, and the output states of these output terminals 3, 3... depend on the signal states to the input terminals 2, 2. Change while maintaining a certain relationship.

The relationship between the reception state of the input terminals 2, 2, . . . and the transmission state of the output terminals 3, 3, . More specifically, this microcomputer includes a user's program storage circuit (hereinafter referred to as user's memory) 4 for storing the above relationship as a user's program, and a user's program memory circuit 4 for storing the above relationship as a user's program. The central control circuit (
(hereinafter referred to as a CPU) 5.
In addition to the above, the main body of the sequencer 1 is also provided with a keyboard switch 6 for programming and various internal input switches 7, 7, etc. for commanding the start, stop, etc. of the device. By performing appropriate operations, writing to the user's memory 4, changes, etc. can be performed freely.

Input terminals 2, 2... and various switches 7 for internal input
, 7... are connected to the CP via an external input interface circuit 8 and an internal input interface circuit 9, respectively.
It is connected to the input bus INB leading to U5, and the output terminals 3, 3... are connected to the external output interface circuit 10 via auxiliary relays X,, X2... Circuit 1 is connected to the CPU 5 via the output bus OTB.

Note that L, L2, . . . are display elements for displaying the signal states of the output terminals 3, 3, . Next, the configuration around the user's memory 4, which constitutes the main part of the present invention, will be described in detail.

The user's memory 4 is an electric circuit mainly consisting of a plurality of storage elements and a small number of additional circuits, and each of the storage elements employs a nonvolatile RAM such as M-NOS.

Further, in this embodiment, as shown in FIG. 4 of the above-mentioned electric circuit, one side edge thereof is made to protrude, and the input/output conductive bands 11 are gathered here to form the connector part 12. 13, and this printed circuit board 13 is mounted on the cassette 1, leaving the connector part 12.
It is housed within 4. In addition, in Fig. 4, 15, 15
is a package of non-volatile RAM, and the entire cassette 14 containing the user's memory composed of the non-volatile RAM 15 will be referred to as cassette memory 16 hereinafter. The front panel 16a of the cassette memory 16 includes the sequencer body 1 as described below.
Handles 17, 17 for use when mounting the cassette memory 16 on the cassette memory 16 are attached, and a contents entry column 18 for displaying information stored in the cassette memory 16 is provided in the center of the panel 16a. On the other hand, on the printed circuit board 13, in addition to the electric circuit constituting the user's memory 4, a key lock circuit 19 as shown in FIG. 6 is mounted.

This key lock circuit 19 has a resistor 20 and a transistor 21 connected in series between the power supply terminals, divides the power supply voltage by resistors 22 and 23 and applies it between the base and emitter of the transistor 21, and further connects a jumper between the base and emitter. The member 24 is detachably provided. The specific structure of the jumper member 24 is as shown in FIG. 5, in which small holes 25a and 25b are formed in parallel to each other in a small piece made of a conductive member. Further, in correspondence with the jumper member 24, the base of the transistor 21 constituting the key lock circuit 19 is provided on the side edge of the printed circuit board 13.
L-shaped pins 26a and 26b, each suitable for external conduction
is installed protrudingly. Then, the cassette memory 16 is inserted into the cassette 14 through the insertion opening 27 formed on the side surface 16b of the cassette 14. When the pad member 24 is inserted, each of the pins 26a, 26b
are inserted into the small holes 25a and 25b, thereby short-circuiting the base and emitter of the transistor 21, and the logical output level of the key lock circuit 19 changes from "L" to "H". Then, as described later, the cassette memory 1
6 is attached to the main body of the sequencer 1, the output of the key lock circuit 19 is sent to the input path INB via the conductive band 11, and this key lock output causes the user's memory 4
Write operations to will be prohibited. Furthermore, when the cassette memory 16 is installed in the main body of the sequencer 1, the user's memory 16 is connected to the address bus A via the conductive band 11.
It will be connected to the DB and the input/output bus IOB, thereby making it possible to send and receive signals between the CPU 5 and the user's memory 4. On the other hand, as shown in FIG. 2, the front panel 28 of the sequencer body is provided with various displays and operating devices necessary for the operation of the sequencer 1, and the cassette memory 16 is also provided at the insertion/removal position.

That is, at the upper right corner of the front panel 28, there is provided a cassette storage section having a Sekiguchi corresponding to the thickness and width of the cassette memory 16 and a depth corresponding to that of the cassette memory 6, and a rear wall of this storage section. is provided with a socket for receiving a board connector. and,
This socket has address bus ADB and input/output bus lOB.
and is internally connected to the input bus INB,
Therefore, when the cassette memory 16 is inserted into the storage section,
Connector section 12 connects the CPU via a socket (not shown)
5 and the user's memory 4 will be communicated. Next, we will briefly explain the relationship between each display and operation device arranged on the front panel 28 and the electric circuit diagram, and
An example of how to use this sequencer 1 will be briefly explained based on a diagram drawn on the front panel 28. The output display elements L, , , and so on are arranged in a single row on the upper left side of the front panel 28 , and the numbers below each display element L, , , and so on are as follows: This is the output terminal number.

Below this display element group, there is a "STE" at the top of each.
P” “OP”, “DATA-1” “DATA-2” “R”
5 indicators 30, 31, 32, 33 labeled "UN"
, 34 are arranged. Furthermore, a code symmetry table 29 with "...STRUCTIONCODE" attached to the top column is arranged below these displays. These indicators 30, 31, 32, 33, 34 and code symmetry table 2
9, we will briefly explain how to program this sequencer. The control performed by this sequencer 1 is so-called process step sequence control,
The entire desired control process is divided into several small processes, and each output state of the output terminals 3, 3... in each process and the transition conditions between each process, that is, the input terminals 2, 2...
・Determine in advance the signal state at which a transition between processes will occur, and write a program containing these contents to the keyboard 6, internal input switch 7,
The data is written into the source memory 4 by the operations 7, . . . and executed by the CPU. The above program is written as machine language in the user's memory 4, but when programming this, a group of machine language with a specific meaning is written in one or several preset codes. You can enter the corresponding code "JUMP", "AND"
The corresponding machine language group can be written into the user's memory 4 by simply pressing the key buttons marked with ..., etc., and these codes can be written as codes (1,
2...etc.) and the code represented by the alphabet (A
ND, OR, etc.). The normal programming order is to first input each process number such as the alphabet code "STEP" and the process number number "1", and then enter the alphabet code representing the transition condition to the next process, such as "OR" or "AND". (meaning to proceed to the next step when the AND condition is established between two specific input terminals), input "1", "2", (each corresponding input terminal number), and then the first "OUT", "
This means inputting things like "ON" and "OFF". The above-mentioned display sections 30, 31, 32 display the process number, transition condition code between processes, input terminal number, etc. explained above.
33, that is, if the display 301 labeled "STEP" displays "01", this means the first step, and the display 301 labeled "OP" displays "4". ”
If it is displayed, it means a process transition command that requires the operation specified by the AND code to be established, and the displays 32 and 33 marked with "DATA-1" and "DATA-2" If ``01'' and ``02'' are displayed, this means that the states of the input terminals corresponding to the input terminal numbers r1'' and ``2'' are symmetrical to the above calculation. Furthermore, the code symmetry table 29 shows what kind of code the number displayed on the display 31 marked with "OP" means, and from the OP column of this symmetry table 29, "4" is " It is possible to know that it is an "AND" code. Next, a case will be described in which the sequencer 1 described above is used to control an automatic knitting machine.

This knitting machine can knit various designs simply by changing the control specifications, and FIGS. 7A and 78 each show examples of the designs. Here, the symbol shown in FIG. 7A will be referred to as symbol A, and the symbol shown in FIG. 7B will be referred to as symbol B. In addition, this knitting machine is equipped with a single needle group that can operate simultaneously, each green needle group can knit a square part of a fixed size, and each needle group can also send either a plain signal or a pattern signal. Accordingly, each square part can be knitted into either a plain color or a design. The above-described knitting machine is controlled by the walkway type sequencer 1 according to the present invention, and desired patterns such as those shown in FIG. 7A and FIG.
The program for knitting the pattern shown in Figure B is 8A.
Each is shown in FIG. 8B.

In the figure, 1 "STEP", "OP", "DATA-"
The meanings of ``1'' and ``DATA-2'' are shown in the code symmetry table 2 above.
It is as left in 9. In this case, input terminal number “1”
"The input terminal 2 corresponding to " is one line raising cycle,
That is, a pulse signal is sent once each time each bran needle group raises a predetermined square portion, and each time this signal is received, a transition to the next process is performed. In addition, the output terminals 3, 3... are electrically connected to the drive device of each knitting needle group, so when the process moves and the state of each output terminal turns "ON" or "OFF", each output terminal changes accordingly. The square area covered by the knitting needles can be either patterned or plain. In addition, OUT1, 2 and OUT1 in FIG. 7A and FIG. 7B
...indicates the output terminal number, and "0",
``xJ'' indicates ``design'' and ``plain J output, respectively.Each program shown in FIGS. 8A and 88 is stored in a dedicated cassette memory 16,
In the contents entry field 18 on the front panel 16a of the cassette memory 16, what kind of symbols are stored in the cassette memory 16 is displayed as shown in FIG.

In the above configuration, for example, to knit pattern A,
As shown in FIG. 2, a cassette memory marked with pattern name A is inserted into a storage section provided on the front panel of the sequencer main body, and the sequencer 1 is operated.

That is, when process number 1 is executed, each adjacent knitting needle group will alternately knit the pattern and plain color into a square, and the knitting end signal issued every time each striped process is completed will cause the knitting process to proceed to the next process. The transition took place and eventually the 7th A
This results in a pattern like the one shown in the figure. on the other hand,
In order to command pattern B to the knitting machine, it is only necessary to replace the cassette memory 16 with a program corresponding to pattern B stored, and at that time, the memory element used in each cassette memory 16 is -Non-volatile RAM like NOS
Therefore, there is no need for the internal memory contents to be erased when the cassette memory 16 is inserted or removed, and furthermore, if it is desired to change the contents of the program, or to write a new program, it can be done freely. As is clear from the above description, according to the present invention, non-volatile RAM is used as each storage element for storing the user's program.
In addition to making it possible to easily replace the entire memory circuit made up of these memory elements along with the circuit board, multiple control specifications can be set in advance for the same device or equipment, and It is possible to provide a stored program type step-type sequencer that is extremely suitable for controlling the above-mentioned equipment or equipment in accordance with one control specification selected from among these control specifications.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing the electrical configuration of a progressive sequence programmer according to the present invention, FIG. 2 is a front view of the front panel of the sequence programmer, and FIG. 3 is a perspective view of a cassette memory. FIG. 4 is a partially cutaway perspective view of the cassette memory, FIG. 5 is an enlarged view of the main part showing an example of the key lock mechanism, FIG. 6 is a circuit diagram showing the key lock mechanism, and FIG.
Figures A and 7B are diagrams each showing an example of a pattern produced by a knitting machine, and Figures 8A and 88 are diagrams 7A and 78, respectively.
It is a figure which shows the user's program of the sequence programmer corresponding to the figure. 1...Sequence programmer, 2...Input terminal, 3...
...Output terminal, 4...User's program memory circuit, 5...Central control circuit, 6...
Keyboard switch, 8... Interface circuit for external input, 10... Interface circuit for external output, 11... Conductive band for input/output, 12
...... Connector section, 13... Printed circuit board,
14...Cassette, 15...Nonvolatile RA
M package, 16...Cassette memory, 19.
...Key lock circuit, 20...Resistor, 21...
...Transistor, 22...Resistor, 23...Resistor, 24...Jumper member, 25a, 25b...
...Small hole, 26a, 26b...L-shaped pin, 27...Insertion hole, 28...Front panel, L, . L...
...Display element, 30, 31, 32, 33...
...Display unit, 15...Non-volatile memory. Figure 2 Figure 1 Figure 3 Figure 4 Figure 5 Figure 6 Figure 7 Figure 8

Claims (1)

[Claims] 1. A plurality of external input terminals, each of which should be connected to an external input device; A plurality of external output terminals, each of which should be connected to an external output device; and an external input terminal for receiving input signals supplied to the external input terminal. an interface circuit; an external output interface circuit for sending an output signal to the external output terminal; and a first memory for storing an output logic state to be sent to each external output terminal in each execution process. a second storage unit for storing process transition conditions from each process to the next process; an output display unit for displaying the output logic state of each external output terminal; ; a process number display for displaying a process number; an operation code display and an operand display for respectively displaying an operation code and an operand representing the process transition conditions; a first memory of the user storage device;
, a keyboard used to write desired information into the second storage unit; external output control based on the output logic state stored in the first storage unit of the user storage device; and the user storage unit. Process step control based on process transition conditions stored in a second storage section of the apparatus, display control for the output display, process number display, operation code display, and open display, and input operation of the keyboard. A step-by-step sequence programmer equipped with a central control circuit that collectively controls writing to a user storage device in response; the external input interface circuit and the external output interface circuit. and central control circuitry are integrally housed in a common housing; the output display, process number display, opcode display, operand display and keyboard are mounted on the front panel of the housing; the user storage device is is housed and sealed in a cassette that can be connected to the outside through a connector part; the front panel of the housing has an entrance to a recess for storing the cassette so that it can be freely inserted into and removed from the housing; A step-by-step sequence programmer, characterized in that a connector connectable to the connector of the cassette is formed on the back wall of the recess.