JP2000099137A - Display unit - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a display unit capable of displaying the display screen intended by a designer on a display part. SOLUTION: In this display unit provided with a control part 1 for controlling the whole, a screen data communication part 3 for transmitting/receiving the screen data of the display screen designed while being connected to a personal computer 31 in which a display screen design software is installed, a non-volatile memory part 4 for storing the screen data of the display screen at least and a display part 6 for displaying the display screen based on the screen data, a screen data storage part 7 for storing the screen data of the display screen is provided while being connected to the control part 1 to store the screen data in the screen data storage part 7 and display them on the display part 6 based on a screen plotting command described in the display screen design software.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a display device which is connected to an external device via a programmable controller or the like and displays the operating status of the external device on a display screen designed using display screen design software. It is.

[0002]

2. Description of the Related Art Conventionally, as this kind of display, there is one having a configuration shown in FIG. This includes a control unit for controlling the whole, a screen data communication unit A for transmitting and receiving screen data of a designed display screen B1 connected to a personal computer A2 in which display screen design software A1 is installed, and at least a display screen. A non-volatile memory unit for storing the screen data of B1 and a display unit B for displaying a display screen B1 based on the screen data are provided.

More specifically, when a designer designs a display screen B1 including characters, graphics, and the like using display screen design software A1, a display screen B displayed on a display unit B is displayed.
1 is the computer screen A21 of the personal computer A2
Are created while being confirmed on the display screen B1 displayed on the display section B, that is, without being confirmed on the display section B. At this time,
The display screen B1 displayed on the computer screen A21 uses the font of the character installed in the personal computer A2 and the one in which the drawing algorithm of the graphic is stored in the display screen design software A1. Then, the screen data is transferred from the personal computer A2 to the memory unit and stored.

[0004]

In the conventional display device described above, the display screen B1 to be displayed on the display section B can be designed using the display screen design software A1.

However, the characters are different from the fonts of the characters installed in the personal computer A2 and the fonts displayed on the display unit B, and the figures are the drawing algorithms stored in the display screen design software A1 and the display unit B. Is different from the drawing algorithm used in. Furthermore, if the dot pitch is a personal computer A
2 differs between the computer screen A21 and the display section B.
Therefore, as shown in FIG. 4, the display screen B1 may differ between the one in which characters and graphics are displayed on the display unit B and the one displayed on the computer screen A21. It was difficult to display the display screen B1 on the display section B.

The present invention has been made in view of the above problems, and an object of the present invention is to provide a display device capable of correctly displaying a display screen intended by a designer on a display unit.

[0007]

In order to solve the above-mentioned problems, the present invention is designed so as to be connected to a control unit for controlling the whole and a personal computer in which display screen design software is installed. A screen data communication unit that transmits and receives screen data of the display screen, a non-volatile memory unit that stores at least the screen data of the display screen, and a display unit that displays the display screen based on the screen data. A screen data storage unit for storing screen data of the display screen connected to the control unit, wherein the control unit converts the screen data to screen data based on a screen drawing command described in the display screen design software. The information is stored in the storage unit and displayed on the display unit.

According to a second aspect of the present invention, in the first aspect, the control unit stores the screen stored in the screen data storage unit based on a screen storage command described in the display screen design software. The data is stored in the memory unit.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to FIGS.

Reference numeral 1 denotes a control unit which is a central processing unit, a so-called CPU, provided with a kanji ROM having bitmap data of characters, and a system based on an operation system program stored in a memory unit 4 described later. Take control of the whole.

Reference numeral 2 denotes display screen design software, which stores tool software, a screen drawing command, and a screen storage command that are stored in a recording medium, for example, a floppy desk 21, and that use the first algorithm to design a figure used for the display screen 61. Provided transmission software. The screen data of the display screen 61 on which the transmission software is designed is transmitted by the screen drawing command, and the screen data is stored in the memory unit 4 described later by the screen storage command. This will be described later in detail.

A screen data communication unit 3 includes a control unit 1 and a display screen design software 2 by a communication interface.
Are connected to the personal computers 31 on which the is installed, and transmit and receive screen data of the designed display screen 61.

Reference numeral 4 denotes a memory unit, which is connected to the control unit 1 by a non-volatile readable / writable flash memory and has a plurality of display screens 61 designed by a designer using the display screen design software 2. Stores screen data. Further, an operation system program for controlling the whole with a second algorithm for drawing a figure is stored.

A communication unit 5 is connected to a programmable controller 51 connected to an external device 51a through a communication interface, transmits and receives data to and from the programmable controller 51, and transmits and receives data to and from the external device via the programmable controller 51. 51a is controlled.

Reference numeral 6 denotes a display unit, which comprises a control unit 1 using a liquid crystal screen.
And one of the display screens 61 stored in the memory unit 4 is displayed. Here, the display screen 61 is an operation status of the external device 51a, a production number data, or a time-series transition graph of the production number, a switch, a lamp, and the like for controlling the external device 51a, and displays an operation status of the external device 51a. .

Reference numeral 7 denotes a screen data storage unit, which is connected to the control unit 1 by a readable and writable RAM, and based on a screen drawing command described in the display screen design software 2,
The screen data of the display screen 61 transmitted from the personal computer 31 via the screen data communication unit 3 is stored.

A switch unit 8 is provided with a plurality of switches, each of which is formed by a screen switch or a button switch, switches a display screen 61 and controls an external device 51 a via a programmable controller 51.

The operation of this embodiment will be described with reference to the flowchart of FIG. First, the designer installs the display screen design software 2 on the personal computer 31 and uses the display screen design software 2 to design a display screen 61 formed of characters, graphics, switches, lamps, and the like. At this time, the display screen 61 displayed on the personal computer 31 has a character formed by the first algorithm described in the display screen design software 2 in which characters are created by the font installed in the personal computer 31 and has a predetermined dot pitch. Is displayed on the computer screen 31a having Then, whenever necessary, a screen drawing command described in the display screen design software 2 is transmitted from the personal computer 31 to the screen data communication unit 3.

When the control unit 1 receives a screen drawing command from the personal computer 31 via the screen data communication unit 3 (# 1), the control unit 1 analyzes the screen drawing command and, based on the command, screen data of the display screen 61, that is, character data. Information, graphic information, and control information such as switches and lamps are stored in the screen data storage unit 7 and drawn and edited (# 2), and the edited display screen 61 is displayed on the display unit 6 (# 3). At this time, the display screen 61 displayed on the display unit 6 displays characters in the Kanji ROM by the second algorithm described in the operation system program.
Computer screen 31a
Is displayed in real time on the liquid crystal screen of the display unit 6 having a dot pitch different from the dot pitch. In this way, the designer designs while checking the display screen 61 displayed on the display unit 6.

Next, the designer transmits a screen storage command described in the display screen design software 2 from the personal computer 31 whenever necessary. When receiving the screen storage command from the personal computer 31 via the screen data communication unit 3 (# 4), the control unit 1 displays the display screen 61 already stored in the screen data storage unit 7 based on the screen storage command. The screen data is transferred to the memory unit 4 and stored (# 5).

In the display device according to the embodiment, as described above, the screen data storage unit 7 for storing the screen data of the display screen 61 is provided so as to be connected to the control unit 1.
Causes the screen data to be stored in the screen data storage unit 7 and displayed on the display unit 6 based on the screen drawing command.
When designing the display screen 61 using the display screen design software 2, a screen drawing command described in the display screen design software 2 is transmitted from the personal computer 31 as needed, and the display screen 61 is displayed on the display unit 6 in real time. The display screen 6 is displayed and designed by the designer while checking the display screen 61 on the display unit 6.
1 can be created.

Since the control unit 1 stores the screen data stored in the screen data storage unit 7 in the memory unit 4 based on the screen storage command, for example, when the design of the display screen 61 is interrupted halfway, the screen storage By transmitting the command and storing the screen data in the memory unit 4, the design work can be easily resumed, and the screen data already stored in the screen data storage unit 7 is stored in the memory unit 4. The transfer operation of transferring the screen data to the memory unit 4 can be eliminated.

[0023]

According to the first aspect of the present invention, a screen data storage unit for storing screen data of a display screen is provided in connection with a control unit, and the control unit stores the screen data based on a screen drawing command. When the display screen is designed using the display screen design software, the screen drawing command described in the display screen design software is transmitted from the personal computer whenever necessary, and the display screen is displayed. It is displayed on the display unit in real time, and the designer can design while checking the display screen on the display unit to create a display screen as intended by the designer.

According to the second aspect, in addition to the effect of the first aspect, the control unit stores the screen data stored in the screen data storage unit in the memory unit based on the screen storage command. When the design of the display screen is interrupted, a screen storage command is sent and the screen data is stored in the memory, so that the design work can be easily resumed, and the screen data already stored in the screen data In this case, the transfer operation of transferring the screen data from the personal computer to the memory unit can be eliminated.

[Brief description of the drawings]

FIG. 1 is a configuration diagram showing one embodiment of the present invention.

FIG. 2 is an explanatory diagram showing an operation of the above.

FIG. 3 is a flowchart showing the operation of the above.

FIG. 4 is an explanatory diagram showing a conventional example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Control part 2 Display screen design software 3 Screen data communication part 31 Personal computer 4 Memory part 6 Display part 61 Display screen 7 Screen data storage part

Claims (2)

[Claims] 1. A control unit for controlling the whole, a screen data communication unit for transmitting and receiving screen data of a designed display screen connected to a personal computer in which display screen design software is installed, and at least a screen data of the display screen And a display unit that displays a display screen based on the screen data.A screen data storage unit that stores screen data of the display screen is connected to the control unit. A display unit, wherein the control unit stores the screen data in a screen data storage unit and displays the screen data on the display unit based on a screen drawing command described in the display screen design software. . 2. The method according to claim 1, wherein the control unit stores the screen data stored in the screen data storage unit in the memory unit based on a screen storage command described in the display screen design software. The display according to claim 1, wherein