JPS6269346A - Program setting method for input and output controller - Google Patents

Abstract

PURPOSE:To facilitate the easy change of a program and also to reduce the storing capacity of a host computer by storing a program in a random access memory included by an interface for control of an input/output device and controlling this input/output device. CONSTITUTION:A programmable ROM 32 stores a stores a so-called standard program to control the basic operation of each of plural types of input/output devices that can be connected to an interface 20. While random access memories 33-37 store the application programs of the machine words interpreted by a host computer 6. A setting circuit 39 selects the program corresponding to the input/output device connected to the interface 20 out of those standard programs stored in the memory 32. Then a logging printer 17 is controlled based on the programs stored in the memories 32-37 of the interface 20.

Description

TECHNICAL FIELD This invention relates to a programmable method for controlling printers, programmable controllers, and other input/output devices.

weight technology A typical prior art is shown in FIG.

The host computer 1 includes a read-only memory 2 and a processing circuit 3, and is connected to a crowd JJ device 5 via an interface 4.

The interface t performs serial-to-parallel conversion of bits (it), voltage level conversion, etc. The input/output device 5
The read-only memory 1, which is a printer, a programmable controller, etc., contains a so-called standard program for controlling the basic operations of the input/output device 5.
So-called application programs, which may differ depending on each user, are stored.

Problems to be Solved by the Invention In the prior art shown in FIG. When the printer is a printer, it is necessary to change the contents stored in the read-only memory 2, and it is difficult to easily change the stored contents. Furthermore, since all the programs for controlling the input/output device 5 are stored in the read-only memory 2, the capacity of the read-only memory 2 increases.

SUMMARY OF THE INVENTION An object of the present invention is to provide an input/output control device that allows easy modification of programs that control input/output devices and eliminates the need to unnecessarily increase the storage capacity of a host computer. The purpose is to provide a program setting method for.

SUMMARY OF THE INVENTION The present invention connects an input/output device to a host computer via an interface, and the ink7ace is based on a random access memory and a program stored in the random access memory. A program creation device is connected to the host combinator, and the program created by the program creation device is translated into 5!1 machine language by the host computer, This is a detailed program setting method for an input/output control device whose VF characteristic is to write to an access memory and control the input/output S: position by the processing device based on a program stored in the random access memory. .

According to the present invention, a program for controlling an input/output device is stored in the random access memory included in the interface, and the input/output device connected to the ink 7 ace is controlled to the left. This makes it easy to change the program and reduces the storage capacity of the host computer.

Moreover, a program creation device such as a so-called personal computer is connected to the host computer, and a program is created and input using a language such as basic, which is translated into machine language by the host computer, and R
Since the program is floated into random access memory, it is possible to easily change the program.

Embodiment FIG. 1 is an overall system diagram of an embodiment of the present invention. The host console 6 includes a processing circuit 7, a read-only memory 8, a random access memory 0, and a console device 10, such as a display device, key power device, etc.
This host computer 6 operates according to the program stored in the read-only memory 8 (runs IE).
The bus 11 has an interface for transmitting and receiving data using a telephone line.
The transmitting/receiving device 12 is connected to a modulation/demodulation circuit 15.16 for transmitting and receiving data to and from a telemeter 13.14 for performing remote measurements and the like.

The logging printer 17, which is an input/output device, the L computer 18, and outputs management information? ! 1 report printer 1
9 etc. are connected to the bus 11 via interfaces 20, 21 and 22, respectively. Also connected to the host computer 6 is a device 23 having a program creation function, such as a personal computer.

FIG. 2 is a block diagram showing a long circuit configuration of the interface 20. The program creation device 123 has a processing circuit 24 to which a key human power device 25 is connected. A key input device 25 is used to input application programs for input/output devices such as the programmable controller 17j, the computer 18, and the alarm printer 19, such as by Basic. This application program includes, for example, constants, coefficients, conversion equations in the input/output device, and printing in the printer. Application programs can be stored on the 70 disk 26. The application program in the processing circuit 24 is converted into a serial number 13 by the serial/parallel conversion circuit 27 and transmitted to the processing circuit 7 of the host computer 6 via the bus 11. The processing circuit 7 of the host computer 6 controls the compiler of data from the program creation device rIL 23, and also controls the entire system shown in FIG. Also, this processing time m7
translates the program created by the program creation circuit 23 into machine language based on the program stored in the read-only memory 8.

In the interface 20, a direct memory access (abbreviated as DMA) circuit 28 is connected to the bus 11, and a processing circuit 30 is connected to the two buses. The processing circuit 30 performs a synchronous operation based on the clock from the clock generation circuit 31. Memories 32 to 37 are connected to the bus 29.

The memory 32 is a programmable only memory, and stores a so-called standard program that controls basic operations for each of a plurality of types of input/output units that can be connected to the interface 20. .

Memories 33-37 are random access memories and are bank-amplified by a battery 38, such as a lithium battery. A machine language application program translated and selected by the host computer 6 is stored in the random access memories 33-37. The setting circuit 39 selects a program corresponding to the input/output device connected to the interface 20 from among the standard programs stored in the programmable read-only memory 32 . A serial/parallel conversion circuit 40 is connected to the bus 29 . The output of the serial-to-parallel converter circuit 40 derives a baud number at the baud rate set by the baud rate setting circuit 41.
3232C also functions to switch the RS and 122, and the IBO code for each standard is derived from terminals 43 and 44. Logging printer 17, which is an input/output device, is connected to terminal 43 or 44. In this way, the logging printer 17 is controlled based on the programs stored in the memories 32 to 37 of the interface 20.

The remaining ink 7 ace 21.22 is the interface 2
The programmable read-only memory 32 stores one of these standard programs for the logging blink 17, the host computer 18, and the report printer 11, and the setting circuit 39 stores one of these standard programs. Programs can be selected.

Standard programs stored in programmable read-only memory 32 may be stored in read-only memory 8 of host computer 6, and only application programs are stored in random access memory 33-3.
May it be stored on 7? may be configured. Various types of 7-block symbol a-grams are stored in 70 cubic disks 26 to facilitate management. I can do two things.

Effects As described above, the present invention costs 1K and ¥cF to create a program.
A program such as an application program is created by the host computer, translated into machine language by the host computer, the program is stored in the random access memory provided in the interface, and input/output devices are controlled based on this program. Now, we have created a common interface for various input/output devices. I! 111
This simplifies the configuration and eliminates the need to unnecessarily increase the z 42 vH in the host computer. In addition to being able to easily debug and modify programs for input/output devices on-site and at production sites, it also improves production efficiency and production man-hours. Furthermore, it becomes possible to easily expand the entire system by increasing the number or types of input/output devices.

[Brief explanation of drawings]

Figure 1 is an overall diagram of one example of the present invention;
The diagram shows the specifics of Ink 7 Ace 2o! +! i 1 anti-
Figure 3 is a diagram of the previous technology. 6...Host Combiator, 7.2=4,3('l・
...Processing circuit, 8...Read-only memory, 23...
Program creation circuit, 20.21122...Interface, 17...Logging printer, 18...Upper computer, 19...Alarm printer, 32...Programmable read-only memory, 33-37...Language access memory , 38...Battery agent Patent attorney Keibu Saikyo Figure 3

Claims (1)

[Claims] The input/output device is connected to the host computer via an interface, and the interface includes a random access memory and a processing circuit that performs a control operation of the input/output device based on a program stored in the random access memory, A program creation device is connected to the host computer, a program created by the program creation device is translated into machine language by the host computer, and written into the random access memory, and input is performed based on the program stored in the random access memory. A program setting method for an input/output control device, characterized in that an output device is controlled by the processing device.