JPH0293804A - Numerical controller - Google Patents

Abstract

PURPOSE:To automatically change a display even when the meaning contents of a key switch 2 are changed, to prevent meaning from being erased or consumed and to improve operability by executing the liquid crystal display of an allocating condition for the means of respective keys near the respective keys. CONSTITUTION:The meaning data of the respective key switches 2 are converted to a display pattern from a RAM memory 10, to which the meaning data of the respective key switches 2 are stored by a software in a program memory 9 to control a CPU8. The data of the converted display pattern are housed to a video RAM13 of an address to be allocated in each key switch 2. A display interface circuit 14 periodically converts the data of the video RAM13 to an electric signal and sends the signal to a liquid crystal display 11. Then, the meaning contents of the respective key switches 2 are displayed on the liquid crystal display 11. Thus, the meaning of the key switch 2 can be executed by the liquid crystal display circuit 11, which is provided near the key switch 2 on a console, and the clearly described means can be prevented from being erased.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a numerical control device in which the meaning of each key can be assigned and changed to any key.

[Conventional technology]

FIG. 2 is a block diagram of a conventional numerical control device. In FIG. 1, (1) is an operation board, which includes a key switch 12) and a mechanical switch (3). (4
) is a board interface circuit in which d, (5
(1) key interface circuit and (6) key decoder circuit. Power is a numerical example unit,
Among them are (8) a central processing unit (hereinafter referred to as CPU), f9) is a program memory (ROM) that controls the OPU 18), and Ill is I:! P 17
+81 is a memo that stores data +7 (RAM)
It is.

Next, the operation will be explained. First, by keying in the key switch (2) on the operation board (1),
The signal of the key switch 2) pressed by the key decoder circuit (6) is decoded into code data and passed to the CPUf81 via the key-in 41-face circuit (5) in the board interface circuit (4). C! By the program in the program memory (9) controlling the P U f8), the meaning of the key switch (2) is changed and the information is stored in the RAM memory. The above operation is performed for some or all of the key switches (2), the meaning of key switch +21 is changed, and the data with the changed meaning is stored in RAM memo 1Jf11. Ru. From then on.

When the key switch 12) is pressed in by the software in the program memory (9) that controls the OPU f8), the meaning stored in the RAM memory port is checked against the data and the corresponding key switch (t) is pressed. Operate the numerical control device in the sense of 2).

[Problem to be solved by the invention]

Conventional numerical control devices were configured as described above, so it was necessary for the operator to specify the meaning of the key switch (2) every time the meaning of the key switch (2) changed, such as te, key-in, etc. There were problems such as the meaning of the key switch (2) that had been specified by the key switch (2) was lost, and the key switch (2) was worn out.

This invention was made to solve the above-mentioned problems, and the meaning of the operator's key switch (2) can be omitted from being specified, and can be clearly stated to prevent the meaning from disappearing. The purpose is to obtain a numerical control device.

[Means to solve the problem]

The numerical control device according to the present invention has a liquid crystal display circuit ttn near the key switch (2) on the operation board and a display interface circuit O3 on the board interface circuit (4), so that each key switch (
2) It is a method that allows the meaning to be displayed.

[Effect]

The display device in this invention uses a liquid crystal display system, which consumes less power and has a thin screen, so it can be easily incorporated into an operation board. In this liquid crystal display device, when the key is turned on, the meaning of the key switch 12) disappears and does not wear out, so it is easy to understand what is written.

[Embodiments of the invention]

Below, one embodiment of the invention will be described with reference to FIG.

In the figure, the same parts as those shown in FIG. 2 are designated by the same reference numerals, and the explanation thereof will be omitted. I'IIl is a companion liquid crystal display device mounted on the operation board (1), and Q2 is a friend 1 display device interface circuit mounted on the board interface circuit (4).

(13 is a video RAM in which pattern data to be displayed by the display device interface circuit 03 is stored.

Next, the operation of the above embodiment will be explained. First, 0Pt7
The meaning of each key switch 12) is determined by the software in the program memory (9) that controls (8) from the RAM memory I11 in which data is stored.

The meaning of each key switch 12) is determined by converting the data into a display pattern, and storing the data of the converted ratio display pattern in the video RAM f1'3 of the address assigned to each key switch (2). The above operation is performed on the data to assign meaning to all key switches (2) 9
All of the display patterned data is stored in the video RAM 113 at address t assigned to each key switch (2). The display device interface circuit 114 periodically converts the patterned data of the video RAM fi3 into an electrical signal, and sends the electrical signal to the liquid crystal display jFlau. indicate.

Figure 'j43 shows the display on the liquid crystal display mounted on the operation board (1) and the key switch (2) corresponding to its meaning, and the upper display shows the key switch (2).
) means that the display also changed with the change.

In the above embodiment, the same effect can be obtained even if the liquid crystal display devices QO are arranged horizontally and placed on a fir tree.

Furthermore, the same effect can be obtained even if the key switches 12) are arranged individually.

〔Effect of the invention〕

As described above, according to the present invention, since the liquid crystal display device constantly displays the content of the key switch (2), the meaning of the key switch (2) is automatically displayed even if the content is changed. Since the display changes, it is possible to freely assign functions to the key switches.

[Brief explanation of drawings]

Fig. 1 is a system block diagram according to an embodiment of the present invention, Fig. 2 is a conventional block diagram, and Fig. 3 is an operation board (1
) is a diagram showing an example of the method. fl) in the figure is the operation board, b2) is the key switch, (
3) is a mechanical switch, (4) is a board interface circuit, +51 is a key interface circuit, +6)
H key decoder circuit, (7) is numerical control unit l-,!
81ke CPU. (9) is a program memory that supports the CPU +81, (11 cr ty f8) is a memory that stores data, 0υ is a liquid crystal display device, 1185 is a display device interface circuit, and (13 is a video RAM). Note that the same reference numerals in each figure indicate the same or equivalent parts.

Claims (1)

[Claims] Using the keys on the operation board and the screen display, the operator can assign and change the meaning of each key for operating the machine tool to any key on the numerical control device that operates the machine tool. A numerical control device comprising a key content display device capable of displaying the assigned meaning of each key on a liquid crystal display near each key.