JP2012018658A - Display device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a display device for monitoring and controlling a controlling device which is capable of storing screen data at the time of occurrence of abnormality with less data amount.SOLUTION: A display device, which is connected to a controlling device for performing device control and functions as an HMI unit of the control device, comprises displaying means for obtaining and displaying data of the control device on a screen, region designating means for designating an optional region of a screen displayed by the displaying means, screen data segmenting means for segmenting a screen data of a region designated by the region designating means and designated region screen storing means for storing the designated region screen data segmented by the screen data segmenting means in a memory.

Description

  The present invention relates to a display device that is connected to a control device that performs device control and has a function as an HMI (Human Machine Interface) device for executing monitoring, control, and the like of these control devices. The present invention relates to a display device capable of storing a screen being displayed.

  2. Description of the Related Art Conventionally, a PLC (Programmable Logic Controller) that performs sequence control of an actuator, an inverter, or a temperature controller that is a control target in a factory or the like is connected to a display device that displays an operation state of the PLC. .

  The display device includes a display screen capable of graphic display and a touch panel superimposed on the display screen, and displays the data content read from each PLC while executing the sequence control of the control target by each PLC. In addition, a setting input of data to be written in each PLC is accepted.

  The display content of the display screen and the operation position on the touch panel are associated in advance by the program, and the operation content set by the program by touching the touch panel at the display position of the switch, button, etc. displayed on the display screen. The instruction data according to is transmitted to each PLC. Therefore, such a display device is sometimes referred to as a programmable display device.

  The display screen of such a display device is created by an operator or the like on a general-purpose computer such as a personal computer, and the created screen data is transferred to the display device. As the screen data, for example, various items (objects) such as switches, various parts, lamps, meters, graphs, and the like are arranged at arbitrary positions to be created as one screen.

  Further, such a display device, when accessing an external device such as a PLC, communicates with the external device via serial / Ethernet (registered trademark), and monitors and controls the external device as described above. .

  For example, if any abnormality occurs in the display device itself, an external device such as a PLC, or the connection state thereof, the display device hard copies the entire screen currently displayed in order to verify the abnormality later. As shown in FIG.

FIG. 7 is a diagram for explaining an example of screen storage in a conventional display device.
When it is desired to save the screen displayed on the display device 1, for example, when the screen displays some abnormal state and needs to be verified later, the user instructs the save to be displayed on the display 3. The button 30 is instructed by the user's finger or the like. This instruction is captured and analyzed via the touch panel controller 15 as a pressing instruction for the touch panel 2 superimposed on the display 3.

  Then, the display device 1 stores the entire displayed screen or screen data 100 of a predetermined area in the memory 4 as bitmap data or the like.

JP 2000-148331 A

  However, in recent years, the screen size of the display device as described above tends to be increased, and accordingly, the data size of a hard-copy screen is enlarged. For this reason, there has been a problem that memory capacity is reduced by storing and storing hard-copy screen data each time an abnormality occurs.

  The present invention has been made in view of the above circumstances, and is a display device for monitoring and controlling a control device, and capable of storing screen data when an abnormality occurs with a small amount of data. The purpose is to provide.

The present invention employs the following configuration in order to solve the above problems.
That is, according to one aspect of the present invention, the display device of the present invention is a display device that is connected to a control device that performs device control and functions as an HMI device of the control device, and acquires data of the control device. Display means for displaying on the screen, area designation means for designating an arbitrary area of the screen displayed on the display means, and screen data for cutting out the screen data of the area designated by the area designation means It is characterized by comprising cutout means and designated area screen data storage means for storing in the memory the designated area screen data cut out by the screen data cutout means.

In the display device of the present invention, it is preferable that the area designating unit uniquely determines the area in accordance with an operation on a touch panel arranged on the screen.
In the display device of the present invention, it is preferable that the area designating unit uniquely determines the area based on information previously set in a memory.

  In the display device of the present invention, it is preferable that the designation by the area designation unit, the cutout by the screen data cutout unit, and the storage by the designated area screen data storage unit are executed by a macro program.

  The display device of the present invention further includes thinned image generating means for generating a thinned image by executing predetermined thinning processing on the screen data of the entire screen displayed on the display means, and the designated area screen data It is desirable that the storage means stores the thinned image generated by the thinned image generating means and the designated area screen data in association with each other in the memory.

  The present invention cuts and saves a predetermined portion of the screen displayed at the time of occurrence of an abnormality, so that only the portion of the screen necessary for later verification etc. can be saved, so without squeezing the memory capacity, There is an effect that it is possible to store a larger number of screen data when an abnormality has occurred from the past.

It is a figure which shows the structural example of the display apparatus to which this invention is applied. It is a figure for demonstrating operation for performing a screen preservation | save process in the display apparatus to which this invention is applied. It is a figure for demonstrating the preservation | save of the screen performed in the display apparatus to which this invention is applied. It is a figure which shows the example of the preservation | save area | region information stored in memory previously. It is a figure which shows the example in the case of creating the switch which performs preservation | save of image data with a drawing program. It is a figure which shows the example of a program description in the case of performing screen data preservation | save with a macro. It is a figure for demonstrating the example of the screen preservation | save in the conventional display apparatus.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
FIG. 1 is a diagram illustrating a configuration example of a display device to which the present invention is applied.
In FIG. 1, a display device 1 is a display device that is connected to a control device that performs device control and executes monitoring and control of the control device, and functions as an HMI device of the control device. A display control circuit 10, a touch panel 2, a display 3, and a memory 4 are provided. The memory 4 may be any storage means, and may be constituted by, for example, a RAM (Random Access Memory), a flash memory, a hard disk, or the like. Further, it may be an external storage device that is externally attached or mounted in an expansion slot. The display control circuit 10 includes a central processing unit (CPU) 11, a read only memory (ROM) 12, a random access memory (RAM) 13, a communication controller 14, a touch panel controller 15, a graphic controller 16, and a video RAM 17. It is connected to the bus 18.

  The CPU 11 is a central processing unit (arithmetic processor) that controls the entire display control circuit 10. The CPU 11 performs a predetermined calculation operation according to a system program stored in the ROM 12. Various calculation results are appropriately stored in the RAM 13. The graphic controller 16 expands the calculation result stored in the RAM 13 on the video RAM 17, and displays on the display 3 corresponding to the contents written in the video RAM 17.

  An instruction by a pressing operation on the touch panel 2 is taken in via the touch panel controller 15 and analyzed. Thereby, various manual operations by the user using the touch panel 2 are realized. The communication controller 14 controls data transmission / reception with an external device such as a PLC (not shown).

  A screen storage program for realizing the present invention is stored in the ROM 12, and when it is read out by the CPU 11, screen storage processing is executed, and image data of a predetermined screen area is stored in the memory 4.

Note that the memory for storing the screen saving program is not limited to the ROM 12, and for example, a flash memory or the like may be used.
Next, screen saving processing executed by the screen saving program will be described.

  FIG. 2 is a diagram for explaining an operation for executing screen saving processing in the display device to which the present invention is applied, and FIG. 3 is a diagram for explaining screen saving executed in the display device to which the present invention is applied. It is a figure for doing.

The display device 1 acquires the data of the control device and displays it on the screen of the display 3.
Here, when the user wants to save the screen displayed on the display device 1, for example, when the screen displays some abnormal state and needs to be verified later, the user can display the screen shown in FIG. As shown, the save instruction button 30 displayed on the display 3 is instructed by the instruction means 20 such as a user's finger. This instruction is captured and analyzed via the touch panel controller 15 as a pressing instruction for the touch panel 2 superimposed on the display 3.

Next, the user designates an area to be saved in the screen displayed on the display 3. For example, an area is specified as follows.
In the present embodiment, an area including the characters “Aiueo” shown in FIG. 2 will be described as an example of an area to be saved.

  First, as shown in FIG. 2B, the user presses the upper left coordinates of the character “Aiueo” displayed on the display 3 of the display device 1 with the instruction means (user's finger) 20 as a starting point. Instruct by. This instruction is also taken in via the touch panel controller 15 and analyzed.

  Next, the user moves to the lower right of the character “Aiueo” displayed on the display 3 of the display device 1 as shown in FIG. Let

  Then, as shown in FIG. 2D, the coordinates are designated as the end point by releasing the designation means 20 at the lower right position of the character “Aiueo”. This instruction is also taken in via the touch panel controller 15 and analyzed.

Based on the start point and end point instructed in this way, a rectangle formed using these as opposite vertices is generated, and this is cut out as a designated area 40 which is an area to be stored.
Then, as shown in FIG. 3, the display device 1 stores the screen data of the specified area 40 that has been cut out in the memory 4.

  Although the embodiments of the present invention have been described above with reference to the drawings, the present invention can be implemented with various modifications without departing from the gist of the present invention regardless of the above-described embodiments. For example, a thinned image is generated by executing predetermined thinning processing on the screen data of the entire screen displayed on the display 3, and the generated thinned image is associated with the screen data of the specified area 40 that has been cut out. May be stored in the memory 4.

  Here, the thinning-out process is to sample the pixels constituting the screen data at a predetermined rate to reduce the data amount. For example, when only the even lines in the vertical and horizontal directions of the screen data are sampled, the screen data amount is thinned out to a quarter.

  As a result, the screen portion that was not originally intended to be saved, that is, the portion that was not cut out as the designated area 40 out of the entire screen displayed on the display 3, is used for verification although it is rough data. There is a possibility that

  Further, when the display device 1 is a programmable display device as described above, the method for specifying the area for storing the screen data is connected to the display device 1 or the display device 1 in addition to the specification method using the touch panel described above. An area to be saved can be set in advance by a drawing program and automatically saved in a memory or the like on the control device.

FIG. 4 is a diagram illustrating an example of storage area information stored in advance in the memory.
In FIG. 4, the coordinates determined by “storage start position: abscissa” and “storage start position: ordinate” correspond to the start point instructed by pressing with the instruction means 20 illustrated in FIG. . Further, the coordinates determined by “storage start position: abscissa” and “storage range length: horizontal direction” and “storage start position: ordinate” and “storage range length: vertical direction” in FIG. This corresponds to the end point indicated by releasing the indication means 20 exemplified in D). These vertical and horizontal coordinates and vertical and horizontal information are determined in advance as “save file name” in FIG.

  Then, by predetermining the start point and the end point of the image data to be stored in this way, the image data storage process can be performed by a macro (program) that can be executed by the display device 1 with a touch panel. The drawing program is a program in which the display content of the screen of the display 3 is associated with the operation position on the touch panel 2 in advance, and by touching the touch panel 2 at the display position of switches, buttons, etc. displayed on the screen of the display 3, Executes the operation contents set by the program.

FIG. 5 is a diagram showing an example in which a switch for executing image data storage is created by a drawing program.
As shown in FIG. 5, in the switch information setting screen 63, the “image data storage switch” is associated with the operation “image data storage” for executing the image data storage based on the information stored in the storage area “D100”. Set. The information stored in the storage area “D100” is, for example, information as shown in FIG. When the “image data saving” switch is pressed, the image data saving operation is executed based on the information stored in the saving area “D100”, and the designated image data is stored. This stored image data is stored in the internal memory of the display device 1 as analysis data (logging data) in time series, or for other PLCs with a display unit connected to the display device 1 or other PLCs to perform sequence control. Or as I / O data. Further, by transferring the data to a higher-level server connected to the display device 1, it can be handled as, for example, production site management data.

FIG. 6 is a diagram showing a program description example when executing screen data saving by a macro.
The example of the program description shown in FIG. 6 is a save file in which image data designated in the range of “80” dots in the horizontal direction and “20” dots in the vertical direction from the coordinates (100, 50) on the screen of the display device 1 is stored. In this example, “screen save macro execution” is executed with the name “IMAGE1”.

  The timing for executing the above-described macro may be triggered by the occurrence of some abnormality in the display device 1 itself, an external device such as a PLC, or a connection state thereof, or may be performed periodically. May be executed automatically.

  Further, the above-described embodiment of the present invention can be realized by hardware or firmware or software on a DSP (Digital Signal Processor) board or CPU board as one function of the display device.

  Further, the display device to which the present invention is applied is not limited to the above-described embodiment as long as the function is executed, and a single device or a system composed of a plurality of devices or an integrated device may be used. Needless to say, the apparatus may be a system that performs processing via a network such as a LAN or a WAN.

  It can also be realized by a system including a CPU, a ROM or RAM memory connected to a bus, an input device, an output device, an external recording device, a medium driving device, and a network connection device. That is, the ROM, RAM memory, external recording device, and portable recording medium in which the software program for realizing the system of the above-described embodiment is recorded are supplied to the display device, and the computer of the display device reads the program. Needless to say, it can also be achieved through implementation.

  In this case, the program itself read from the portable recording medium or the like realizes the novel function of the present invention, and the portable recording medium or the like on which the program is recorded constitutes the present invention.

  Examples of portable recording media for supplying the program include flexible disks, hard disks, optical disks, magneto-optical disks, CD-ROMs, CD-Rs, DVD-ROMs, DVD-RAMs, magnetic tapes, and nonvolatile memory cards. Various recording media recorded via a network connection device (in other words, a communication line) such as a ROM card, electronic mail or personal computer communication can be used.

  The computer (information processing apparatus) executes the program read out on the memory, thereby realizing the functions of the above-described embodiment, and an OS running on the computer based on the instructions of the program. Performs part or all of the actual processing, and the functions of the above-described embodiments are also realized by the processing.

  Furthermore, a program read from a portable recording medium or a program (data) provided by a program (data) provider is stored in a memory provided in a function expansion board inserted into the computer or a function expansion unit connected to the computer. After being written, the CPU of the function expansion board or function expansion unit performs part or all of the actual processing based on the instructions of the program, and the functions of the above-described embodiments are also realized by the processing. obtain.

  That is, the present invention is not limited to the embodiment described above, and can take various configurations or shapes without departing from the gist of the present invention.

DESCRIPTION OF SYMBOLS 1 Display apparatus 2 Touch panel 3 Display 4 Memory 10 Display control circuit 11 CPU (Central Processing Unit)
12 ROM (Read Only Memory)
13 RAM (Random Access Memory)
14 Communication Controller 15 Touch Panel Controller 16 Graphic Controller 17 Video RAM
18 Bus 20 Instruction means (user's finger)
30 save instruction button 40 designated area 50 designated area screen data 60 image data saving switch 63 switch information setting screen 100 screen data

Claims (5)

A display device that is connected to a control device that performs device control and functions as an HMI device of the control device,
Display means for acquiring data of the control device and displaying it on a screen;
Area designating means for designating an arbitrary area of the screen displayed on the display means;
Screen data cutout means for cutting out screen data of the area specified by the area specifying means;
Designated area screen data storage means for storing the designated area screen data cut out by the screen data cutout means in a memory;
A display device comprising:   The display device according to claim 1, wherein the area designating unit uniquely determines the area in accordance with an operation on a touch panel arranged on the screen.   The display device according to claim 1, wherein the area designating unit uniquely determines the area based on information set in advance in a memory.   The display device according to claim 2, wherein the designation by the area designation unit, the segmentation by the screen data segmentation unit, and the storage by the designation area screen data storage unit are executed by a macro program. A thinned image generating means for generating a thinned image by executing a predetermined thinning process on the screen data of the entire screen displayed on the display means;
Further comprising
The designated area screen data storage means stores the thinned image generated by the thinned image generation means in association with the designated area screen data in a memory.
The display device according to claim 1, wherein the display device is a display device.