JP2900071B2 - Programming device for programmable controller - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a programmable controller programming device that creates and inputs a sequence program to be executed by a programmable controller.

[Conventional technology]

Conventionally, as this kind of programming device, an input method using a combination of a position input device such as a mouse in the alphabet input method, the function input method, and the above two methods is often used.

The alphabet input method is a method in which a program command is input in the form of alphabetic characters using a character key of a keyboard input device, and then the input character string is converted into an instruction code used by a programmable controller. The function input method is a method in which a function key is provided for each program command, and the command code is generated by pressing the function key.

In both of the above methods, a position input device called a mouse may be used instead of the cursor key to specify the position of insertion or deletion of a program instruction.

[Problems to be solved by the invention]

However, in the conventional programming device, it is necessary to prepare dedicated information input devices in accordance with the input method desired by the user, that is, in the alphabet input method and the function input method. In addition, the conventional device has the inconvenience that when an information input device of an input method desired by a user is not connected to the system, a desired information input device must be exchanged.

In view of the above, an object of the present invention is to provide:
It is an object of the present invention to provide a programming device for a programmable controller which can selectively use a plurality of input methods with one information input device.

[Means for solving the problem]

In order to achieve such an object, the present invention provides key input means for generating an identification code signal assigned to each key by operating an operator's key, and position input means for instructing and inputting a coordinate position on a display screen. A first conversion means for converting an identification code signal generated by the key input means into a corresponding alphabetic character code; and a sequence program generating a corresponding identification code signal generated by the key input means. And a second conversion unit for converting the identification code signal generated by the key input unit into a corresponding alphabetic character code, and converting the identification code signal into a corresponding one of the cursor keys in the key input unit. Instead, a third conversion means for receiving the coordinate information instructed and input by the position input means, and a third conversion means generated by the key input means. And converting the identification code signal into a corresponding instruction code for creating a sequence program and accepting coordinate information designated and input by the position input means instead of the cursor keys in the key input means. Converting means, the first converting means, the second converting means, the third converting means, and the fourth converting means.
Instruction means for instructing any one of the conversion means, and the conversion means specified by the instruction means being operable, and the information converted or accepted by the specified conversion means is handled as input information. Control means.

[Action]

The present invention focuses on the fact that, in a keyboard input device, a key code identification signal generated by pressing a key is converted into an information code signal by code conversion means such as a key matrix or a central processing unit. The code conversion means is provided, and the type of the information code signal to be converted is specified by the instruction means. For this reason,
Only one key input means is required, and the user does not need to prepare a plurality of types of keyboard input devices. In addition, a single key can be used to input alphabetic characters and an instruction code for creating a sequence program, and an input operation using a coordinate input device such as a mouse becomes possible.

〔Example〕

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

 FIG. 1 shows a basic configuration of an embodiment of the present invention.

In FIG. 1, a key input means 100 generates an identification code signal assigned to each key by operating an operator's key.

The plurality of types of code conversion means 210 to 230 are key input means 100
Are converted into different types of information code signals.

Instructing means 300 instructs the type content of the information code signal to be converted.

The control means 400 selects the code conversion means corresponding to the instruction of the instruction means 300 and makes it operable.

 FIG. 2 shows a main circuit configuration of the embodiment of the present invention.

In FIG. 2, a central processing unit (CPU) 10, a keyboard input device, a position input device 25, a read only memory (R
OM) 30, the display device 40, and other circuits are commonly connected to a bus.

The CPU 10 performs the following processing by executing various control programs stored in the ROM 30 in advance.

(A) Creation and editing of a sequence program input from the keyboard input device 20, (b) Transfer of the sequence program to the programmable controller (c) Key identification code signal transmitted from the keyboard input device is specified by the user (D) Operation control for constituent circuits The keyboard input device 20 includes, for example, a keyboard in which Japanese Industrial Standard (JIS) English character keys are arranged. It can be used as key input means of the present invention. In this example, the signal generated by the pressed key is an identification code signal assigned to each key in advance.

The position input device 25 inputs the coordinates of the position of the cursor mark by moving the cursor mark on the display device 40.

The ROM 30 stores a control program for the above processing executed by the CPU 10. Further, code conversion programs 31 to 34 corresponding to the various input methods described above are also stored.

In this embodiment, an input method is designated by the user, and a key identification code generated in the keyboard input device is converted into an information code signal corresponding to the input method by a conversion program for the designated input method.

The display device 40 visually displays the input information signal after the code conversion.

Input processing of a sequence program in such a circuit configuration will be described.

When the power is turned on or the mode selection key of the keyboard input device 20 is pressed, the CPU 10 executes the control procedure shown in FIG.

First, an input method executable in the programming device is displayed as a message. In the present embodiment, a total of four methods, (1) an alphabet input method, (2) a function key input method, and methods (3) and (4) using a coordinate input device in combination with both methods are possible.

Next, when the user presses the key corresponding to the number “2” to indicate the function key input method, the CPU 1
At 0, it is detected by code comparison that the identification code signal from the keyboard input device (instruction means) 20 is the identification code of the key (steps S100 → S110 → S12 in FIG. 3).
0).

Next, the CPU 10 sets “2” as input mode flag information in an internal register, and stores a user's input method instruction. In addition, as shown in FIG. 5, a list of the function contents assigned to the alphabet character keys is also displayed (step S121 in FIG. 3). Hereafter, keyboard input device
Every time there is an information input from 20, the key code identification signal is converted into an information code signal by a code conversion program corresponding to the value indicated by the input mode flag information. That is, for example, when the user presses the key corresponding to the alphabetical character “A” for the purpose of creating a sequence program,
In U10, after confirming that a key other than the input mode selection key is pressed, the control procedure of FIG. 4 is executed in an interrupt manner. First, the CPU 10 converts the key identification code of the key of the alphabet letter “A” inputted from the keyboard
It is stored in U10 (step S200 in FIG. 4). Thereafter, the CPU 10 checks the current value of the input mode flag.

Since the current value is "2", the procedure proceeds from step S210 to S2.
Go to 20 → S221, the second of the function key input method
The code conversion program is read out, and the key code identification signal stored and stored is converted into an instruction code representing a contact instruction by the second conversion program (step S221 in FIG. 4).
At this time, the CPU 10 operates sequentially as a control unit and a conversion unit.

Since the processing contents of the program for converting the key code identification signal into the form of each code are well known, only a brief description will be given. For example, if "10" (decimal) is assigned as a key code identification signal to the character key of the above-mentioned alphabet "A", the CPU 10 compares the input key code identification number sequentially from the numerical value "1" in order. As a result, it is detected that the key code identification number of the input is "10", and the contact instruction code corresponding to this "10" in advance is handled as user input information.

The contact instruction code is converted into a graphic form by a character generator, and a graphic form contact instruction as shown in FIG. 5 is displayed on the display screen of the display device.

When the alphabet input method is selected, the first conversion program is selected, and in the above example, the input key code identification number "10" is converted to the character code of "A".

In the method used in combination with the position input device 25, the coordinate information input by the position input device is received and used by the CPU 10 instead of the cursor key.

As described above, in this embodiment, the key identification number generated by the user's depression can be converted into various information codes by the conversion program of the designated input method. Therefore, only one keyboard input device is required, and character codes and function keys can be shared by one key.

 The following examples can be given in addition to the present embodiment.

1) In this embodiment, the code conversion program is selected by referring to the input mode flag when there is a key input from the keyboard input device. However, if there is room in the work memory, when an input method is selected by the user, a conversion program corresponding to the selected input method is transferred and stored in the work memory. Code conversion may be performed using a conversion program stored in the memory.

2) In this embodiment, a code conversion program corresponding to the input method is prepared. However, the converted code corresponding to each input method corresponding to the key code identification number is stored in the ROM 30 in the form of a table. It is also possible to perform code conversion by referring to this table by the CPU 10.

〔The invention's effect〕

As described above, according to the present invention, it is possible to input a plurality of types of information codes with a single key input unit such as a keyboard input device. The effect of losing the replacement work of the keyboard input device is also obtained. In addition, a single key can be used to input alphabetic characters and instruction codes for creating a sequence program.
An input operation using a coordinate input device such as a mouse can be performed, and a cursor key and a position input unit such as a mouse can be selectively used according to the input contents, thereby contributing to a reduction in operation labor.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a block diagram showing a basic configuration of an embodiment of the present invention, FIG. 2 is a block diagram showing a circuit configuration of the embodiment, and FIGS. 3 and 4 are diagrams of FIG. FIG. 5 is a flowchart showing a control procedure executed by the CPU 10, and FIG. 5 is an explanatory diagram showing a display example of the present embodiment. 10 CPU, 20 keyboard input device, 25 position input device, 30 ROM, 40 display device.

Claims (1)

(57) [Claims] 1. Key input means for generating an identification code signal assigned to each key by operation of a key by an operator; position input means for instructing and inputting a coordinate position on a display screen; The identification code signal is
First to convert to the corresponding alphabetic character code
Conversion means, and an identification code signal generated by the key input means,
A second conversion unit for converting into a corresponding instruction code for creating a sequence program, and an identification code signal generated by the key input unit.
While converting to the corresponding alphabetic character code,
A third conversion unit that receives coordinate information instructed by the position input unit instead of a cursor key in the key input unit; and an identification code signal generated by the key input unit.
A fourth converting unit that converts the corresponding instruction code into a sequence program and receives coordinate information instructed and input by the position input unit instead of the cursor key in the key input unit; Instruction means for instructing any one of the first conversion means, the second conversion means, the third conversion means, and the fourth conversion means; and activating the conversion means specified by the instruction means. Control means for handling, as input information, information converted or received by the designated conversion means, a programming device for a programmable controller.