JPS5962906A - Sequencer and program input method to its sequencer - Google Patents

Abstract

PURPOSE:To prevent erasure at power failure of a program to control an external device and to attain ease of change in the control content by providing a reloadable ROM storing the user's program to a microcomputer. CONSTITUTION:The reloadable ROM5, an RAM and a central processing unit 7 form the microcomputer 9. The common sequencer program required for the operation as the sequencer and the user's program different at each sequencer for individual operation of the external device are stored in the ROM5. Thus, the erasure of the program to control the external device due to power failure is prevented and the change in the control content is performed easily.

Description

DETAILED DESCRIPTION OF THE INVENTION FUJIJJ relates to a sequencer used to control external equipment, and a method for manually storing a program into the sequencer.

A leading technique? In li+, random access memory and
It includes a read-only memory and a central processing unit, and the read-only memory has a common sequencer program written in it that is necessary for operating as a sequencer, and the random access memory has a program that specifically stores each external device. A so-called user program necessary for operation is written. In such prior art, in order to prevent the contents of the random access memory from being erased during a power outage, it is necessary to back up the random access memory with a battery.

In other prior art, a user program is stored in a so-called masked read-only memory that cannot be rewritten. Therefore, the control operation of the external FflS machine number is fixed, and the operation of the external equipment cannot be changed according to various requests.

SUMMARY OF THE INVENTION An object of the present invention is to provide a sequencer and a sequencer capable of making it possible to prevent a program for controlling an external device from being deleted no matter how many times a day, and to freely change the contents of the control. The purpose of the present invention is to provide a method for inputting programs to a sequencer.

FIG. 1 is a perspective view of one embodiment of the present invention.

Sequencer 1 has microcomputer cassettes 2 and 1
Ink face device? The programmer 4 is programmed in connection with this sequencer 1, including the sequencer 13.

FIG. 2 is a block diagram of the sequencer 1.

The microcomputer cassette 2 includes: -) a replaceable read-only memory 5, a random access memory 6, a central processing unit 7, and a bottle-shaped first connector 8; The read-only memory 5, the random access memory 6, and the central processing unit 1ti7 are connected to the microcomputer 9.
is formed f+1η. The human power boat and the output boat of this microcomputer 8 are connected in relation to the 112th connector 8. The read-only memory 5 stores a sequencer program common to all sequencers that is necessary to operate as a sequencer, and a so-called user program that may differ from sequencer to sequencer in order to perform individual operations of external crosspieces, as described below. Stored. Random access memory 6 operates in conjunction with the execution of programs in IJ-only memory 5 to control the external kk device.

The interface device 3 includes a terminal block 10.11 for connection to an external device, an input signal conversion circuit 12 connected to the terminal block 10, an output signal conversion circuit 13 connected to the terminal block 11,' The ink face device 3 includes an L source 14 and a second connector 15.
has a mounting hole 16 for storing the microcomputer cassette 2 with the first and second connectors 8 and 15 connected. The human power signal conversion circuit 12 includes, for example, a photocoupler. The output signal conversion circuit 13 includes, for example, a transistor, a relay, and the like. The human power signal conversion circuit 12 and the output signal conversion circuit 13 are connected to the second connector 1
5.

The power from the power supply 14 is supplied to the input/output warmer conversion circuit 12゜1.
3 and the microcomputer 9 in a state where the first and second connectors 85 are connected.

The third block is block 1 indicating the specific 'r7 (i) configuration of programmer 4. Programmer 4 is
7, a read-only memory 18, a random access memory 19, a display means 20, a key manual means 21, a writer 22 for the read-only memory 18, and a third connector 23.
And the 4th i/ku'e? ? Contains H24. 3rd r
FA <r 23 is microcomputer cassette 2
It has a socket for connection to the first connector 8 of. Fourth
The connector 24 is a cable 25 of [iJ'flexible''l'llE.
to the bus 26. first and third connectors 8,
A mounting hole 27 is formed in the programmer 4 for accommodating the microcomputer cassette 2 with the microcomputer cassette 23 connected. The read-only memory 18 reads a user program input by the key human power means 21 and displays it on the display means 20, writes it into the random access memo IJ 19, or performs read-only memory use by an operation from the key human power means 21. The terminal block 1 can be used to control the writer 22 or derive a signal via the fourth connector 24.
A control program 1 for controlling external devices connected to the random access memory 19 based on a user program stored in the random access memory 19 is stored in advance. Read-only memory like this 1
8, random access memory 19, display means 20, key manual means 21, read-only memory writer 22, third
The connection F+if 23 and the fourth connection device 24 are connected to the bus 26
It is connected to the processing bag di 17 via.

When writing a user program to the rewritable read-only memory 5 of the microcomputer cassette 2, first write the user program to the key manual means 2.
1 to the random access memory 19 included in the programmer 4. Then, the second connector 1
5 is connected to the fourth connector 24, and the central processing unit 17 and the like are L Aided to external equipment via the input signal conversion circuit 12 and the output signal conversion circuit 13. Accordingly, the central processing unit 17 executes the control operations t and t according to the user program inputted by the key manual means 21 as described above, and controls the external F+1S 1M unit. In this way, the operation of the external device according to the program stored in the random access memory 19 is confirmed. When the program is being executed, the stored contents of the random access memory 19 are stopped by the operation of the key manual means 21. In this way, the correct user program will finally be recorded in the random access memory 19. Therefore, the first connector 8 of the microcomputer cassette 2 is connected to the third connector 23 of the programmer 4. Therefore, the user program and sequencer program stored in the random access memory 19 are loaded into the rewritable read-only memory 5 of the microcomputer cassette 2 by the read-only memory writer 22 (1M).

The write operation of the read-only memory writer 22 is performed according to a program stored in the read-only memory 18. When this fortune-telling is completed, the microcomputer cassette 2 is removed from the programmer 4, and its first connector 8 is read directly to the second connector 15.

In this way, the read-only memory 5 of the microcomputer cassette 2 is loaded with the correct user program and sequencer program.

The read-only memory can be an erasable programmable read-only memory whose stored contents can be erased with ultraviolet light, for example when the user program is to be changed. The original user program can be erased and a new user program can be written by irradiating ultraviolet rays through the erase window facing the microcomputer 9. As another example, the microcomputer 9 has a read-only memory that cannot be rewritten. However, the sequencer program may be stored in this read-only memory.

In the illustrated embodiment, microcomputer engineer 7)
2 TE4J '7'' ty Programs for controlling the Grammar 4 are not stored. That is, there is no need to store programs that are not used during actual operation of the microcomputer cassette 2. Therefore, the memory capacity hf should be reduced. Also, microcomputer 9
are read-only memory 5 and random access memory 6
It includes no external wiring, thus increasing reliability and requiring less space.

As described above, according to the present invention, a user program that can be different for each sequencer for controlling a + ij of equipment is written in a read-only memory that can be used for fortune telling, so that when the machine is stopped, However, the store itself will not disappear, so there is no need to upgrade the battery using a battery. It is also easy to change this user program. Also, once the programmer has confirmed that the user program is correct, the user program stored in the programmer's random access memory is stored in the write-enabled read-only memory of the microcomputer cassette. This allows the user program to be corrected and changed accurately.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of an embodiment of the present invention, FIG. 2 is a block diagram showing a specific EQ configuration of the sequencer 1, and FIG. 4153 is a specific li'! FIG. ■...Sequencer, 2...Microcomputer cassette, 3...Ink face device i*, 4...Programmer, 5...Writable read-only memory, 6゜19...Random access memory , 7.17・
...Central processing unit, 8...First connector, 9...Microcomputer, 12...Input signal conversion circuit, 13
...Output TF conversion circuit, 15...Second connector,
18... Read only memory, 20... Display means,
21...Key manual means, 22...Read-only memory writer, 23...Third connector, 24...Fourth connector Agent Patent attorney Kei Nishi Part 2 Figures 2, 3 Figure 3

Claims (2)

[Claims] (1) A sequencer comprising a microcomputer including a replaceable read-only memory in which a user program, which may be different for each sequencer used to control external equipment, is stored. (2) preparing a microcomputer cassette, an interface device, and a programmer, the microcomputer cassette comprising a rewritable read-only memory, a random access memory used during operation according to a program stored in the read-only memory; , a first connector, and a central processing unit connected in association with the read-only memory, random access memory, and connector; the interface device includes an input/output signal conversion circuit connected to an external device; a second connector connected in relation to the input/output fd conversion circuit and removably connected to the first connector; a fourth connector, a fourth connector removably connected to the second connector, a key human power means, a random access memory, and a third connector, a fourth connector, a fourth connector connected in relation to the key human power means and the random access memory; such a preparatory step, including a central processing unit operating a key manual means to write a program for controlling the external equipment in the random access memory of the programmer, connecting the second connector to the fourth connector, and connecting the second connector to the fourth connector; confirming that the external device operates according to the contents written in the programmer's random access memory, and correcting the contents of the programmer's random access memory when the operation is incorrect; connecting the first connector to the third; 1. A sequencer comprising the steps of: writing the contents of the random access memory of the programmer into the read-only memory of the microcomputer cassette by connecting the programmer to the read-only memory of the microcomputer cassette; and connecting the first connector to the second connector. Program human power methods to.