JP2006309360A - Display device and data display system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a display device for displaying control data more intuitively and understandably than numerical display by level display capable of specifying control data in a PLC. <P>SOLUTION: A display device 14 for level-displaying control data in a PLC 12 on a screen based on the area of an on-region occupying a display area is configured of a screen data storage part 21 for storing two different illustration images 21a as an on-image and off-image, a display area dividing part 22a for dividing the display area into a plurality of block areas, an illustration image arranging part 22b for arranging the on-image in a block region included in the on-region, and for arranging an off-image in the block region other than the on-region to generate a display screen and a warning range instructing part 22c for instructing a warning range relating to control data. The illustration image arranging part 22b generates a display screen by making different the on-image or off-image according to whether or not the control data are present in the warning range. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a display device and a data display system. More specifically, the present invention relates to an improvement of a display device that displays a level of control data in a programmable logic controller on the screen according to the area of an ON region in the display area.

  There is a programmable logic controller (PLC) as a control device that controls devices such as a drive device and a sensor. The PLC is a rewritable electronic device that operates based on a control program created using a program creation tool such as a ladder editor. In such a PLC, the internal state is usually monitored using a display device that displays the operation state of the PLC on the screen. Specifically, the control data in the PLC is displayed as a level on the screen. This level display is a display method in which the quantity of control data is represented by the area of the ON region in the display area, and is called a level meter.

  17 (a) and 17 (b) are diagrams showing a main part of a display screen in a conventional display device, and FIG. 17 (a) shows a level meter 100 having a fan-shaped display area. FIG. 17B shows a level meter 110 having a rectangular display area. In the level meter 100, the area of the fan-shaped on region 101 changes according to the control data, and a boundary line of the off region 102 having a luminance different from that of the on region 101 serves as a guideline. In the level meter 110, the rectangular ON region 111 changes in the vertical direction according to the size of the control data, and the boundary line between the ON region 111 and the OFF region 112 serves as a guideline.

  In addition, the control data in the PLC is numerically displayed on the screen. This numerical display is a display method that represents control data by a combination of numbers, and is called a counter or the like. FIG. 18 is a diagram showing another example of a display screen in a conventional display device, and shows a counter 120 that displays numbers in a rectangular display frame. The counter 120 displays a numerical value that changes according to the operating state of the PLC.

  In the display device using the conventional level display as described above, the control data that changes in accordance with the operation state of the PLC can be displayed more intuitively and easily than the numerical display. However, it is difficult to identify the control data and identify the internal state of the PLC or PLC because the area of the fan-shaped or rectangular on-region is merely changed based on the control data.

  The present invention has been made in view of the above circumstances, and provides a display device that displays control data more intuitively and more easily than numerical display by a level display capable of specifying control data in a programmable logic controller. For the purpose.

  Another object of the present invention is to provide a display device that changes display based on control data in a programmable logic controller. In particular, it is an object of the present invention to provide a display device that, when the control data is out of the alarm range, makes the display different from that in the alarm range.

  A display device according to the present invention is a display device that displays control data in a programmable logic controller on a screen according to the area of an ON region in a display area, and stores two different illustration images as an ON image and an OFF image. An illustration image storing means, a display area dividing means for dividing the display area into two or more block areas, the on-image is arranged in a block area included in the on-area, and the block area outside the on-area is Illustrated image arrangement means for arranging an off-image and generating a display screen.

  In this display device, the display area is divided into a plurality of block areas, an on image is arranged in a block area included in the on area, and an off image is arranged in a block area outside the on area. At that time, a display screen is generated by two different illustration images stored as an on-image and an off-image. Here, a display format that displays numerical values and quantities as a percentage of the total by displaying a part of the display area differently from other areas is called level display. In this level display, numerical values and quantities are displayed. An area indicating the above will be referred to as an ON area. With such a configuration, the control data in the programmable logic controller is displayed as a level by an illustration image for each block area. Therefore, if an illustration image corresponding to the control data is used, the control data is more intuitive and easier to understand than the numerical display. While being able to display, control data can be specified easily by display.

  In the display device according to the present invention, in addition to the above-described configuration, the illustration image arrangement unit arranges an on-image in an area portion included in the on-area with respect to a block area partially included in the on-area. It is configured to place an off-image in the outer area portion. According to such a configuration, when a block area partially included in the on area is generated, the on image and the off image are appropriately arranged in the block area, thereby improving the accuracy in displaying the level of the control data. be able to.

  In addition to the above configuration, the display device according to the present invention further includes an alarm range instruction unit that specifies an alarm range related to the control data, and the illustration image arrangement unit specifies the control data when the alarm range is specified. The display screen is generated with different on-images or off-images depending on whether the alarm range is within the set alarm range. Specifically, when the control data is out of the alarm range, the on-image is changed. Alternatively, the on-image is changed when the control data exceeds the upper limit value of the alarm range, and the off-image is changed when the control data falls below the lower limit value of the alarm range. According to such a configuration, when an alarm range is specified, a display screen is generated with different on-images or off-images depending on whether the control data is within the alarm range. Therefore, when the control data is out of the alarm range, an abnormality in the control data can be effectively notified by a display different from that in the alarm range.

  Further, the display device according to the present invention, in addition to the above configuration, the illustration image storage means stores two or more different image sets with the on image and the off image as image sets, and the illustration image arrangement means includes Based on the control data in the programmable logic controller that designates the image set, the display screen is generated by changing the image set. According to such a configuration, the display screen is generated by changing the image set based on the control data. Therefore, even when the type of the control data is switched, appropriate display is performed and the control is performed. Data can always be identified correctly.

  In addition to the above-described configuration, the display device according to the present invention is configured so that the display area dividing unit calculates the number of display areas divided without changing the area size based on the control data in the programmable logic controller that specifies the input range. In other words, the illustration image arrangement means is arranged to arrange an illustration image in each block area in the display area where the number of divisions is changed. According to such a configuration, even if the input range of the control data is switched, the level display by the illustration image is appropriately performed without changing the area size, so that the control data is always displayed correctly. be able to.

  In addition to the above configuration, the display device according to the present invention further includes input data comparison means for comparing the control data with a predetermined threshold value, and the display area dividing means adds the control data comparison result by the input data comparison means. Based on this, the number of divisions of the display area is increased without changing the area size, and the illustration image arrangement means is configured to reduce and arrange the illustration image in each block area in the display area with the increased number of divisions. . According to such a configuration, even if the input range of the control data is switched, the level display by the illustration image is appropriately performed without changing the area size, so that the control data is always displayed correctly. be able to.

  A data display system according to the present invention operates on the basis of a screen data creation device that creates screen data, and the screen data created by the screen data creation device. A display device for level display of control data on the screen, wherein the screen data creation device stores two different illustration images as an on-image and an off-image, and two or more blocks for the display area. Display area dividing means that divides into areas, and the on-image is arranged in the block area included in the on-area, and the off-image is arranged in the block area outside the on-area to generate a display screen for displaying the control data Levels that generate level display programs A display program generation unit, and a screen data transmitting means for transmitting to said display device each illustration image and the level display program as the screen data.

  According to the display device and the data display system of the present invention, since the control data in the programmable logic controller is level-displayed by the illustration image, the control data can be displayed more intuitively and easily than the numerical display, and the display Thus, it can be easily recognized which control data is displayed.

  Also, the screen display is performed with different on-images or off-images depending on whether the control data in the programmable logic controller is within the alarm range, so when the control data goes out of the alarm range, the alarm range The display can be different from when it is inside.

Embodiment 1 FIG.
FIG. 1 is a block diagram showing an example of a schematic configuration of a monitoring system including a display device according to Embodiment 1 of the present invention. The monitoring system 10 includes a program creation tool 11, a PLC 12, a screen data creation device 13, and a display device 14, and performs an operation for monitoring the internal state of the PLC 12.

  The program creation tool 11 is application software that operates on an information processing terminal such as a personal computer, and generates a control program based on a user operation.

  A PLC (Programmable Logic Controller) 12 is an electronic device that controls devices such as a drive device, a sensor, and a processing device, and operates based on a control program created by the program creation tool 11. The PLC 12 is provided with a control program storage unit 12a that stores the control program transferred from the program creation tool 11 in a rewritable manner.

  The screen data creation device 13 is application software such as a drawing editor that operates on the information processing terminal, and generates screen data based on a user operation. This screen data is constituted by an illustration image used when displaying the control data in the PLC 12 and a level display program for displaying the control data on the screen at a level.

  The level display program is a program in which control data is represented by a variable or a memory address in the PLC 12, and performs an operation of reading the control data in the PLC 12 and generating a display screen. This variable is information (referred to as a device) that specifies the internal state of the PLC 12, and is determined in accordance with the PLC 12 or a device that is to be controlled by the PLC 12.

  The display device 14 is a monitor device that operates based on the screen data created by the screen data creation device 13. The display device 14 is provided with a screen data storage unit 14a that stores the screen data transferred from the screen data creation device 13 in a rewritable manner.

  Here, it is assumed that a table associating variables with memory addresses in the PLC 12 is transferred from the program creation tool 11 to the PLC 12 as variable allocation information together with the control program. When the display device 14 operates based on the level display program, communication is performed by designating a memory address in the PLC 12, and control data of the designated memory address is transmitted by the PLC 12. The display device 14 may read the variable allocation information from the PLC 12 and convert the variable included in the screen data into a memory address.

  In the screen data creation device 13, two different illustration images are stored as an on-image and an off-image, and a level display program is used as a program for displaying the control data in the PLC 12 on the screen according to the area of the on-area occupying the display area. Generated. The display device 14 divides the display area into a plurality of block areas based on the level display program, arranges the on-image in the block area included in the on-area, and sets the off-image in the block area outside the on-area. The placement operation is performed. This facilitates the identification of control data when level-displaying the control data in the PLC 12.

  Here, a kind of display format that makes it possible to intuitively recognize numerical values and quantities as a percentage of the whole by displaying a part of a certain area in a display area differently from other areas is called level display. To do. Specifically, it is expressed by a level meter, bar graph, pie chart, or the like. In such level display, an area indicating a numerical value or quantity to be displayed is referred to as an on area. Specifically, in the bar graph in which the range is “0” to “100”, when the numerical value “60” is represented, the region recognized as “0” to “60” is displayed as the ON region.

  FIG. 2 is a block diagram showing a configuration of a main part of the monitoring system of FIG. 1, and shows a configuration example of the screen data creation device 13. The screen data creation device 13 includes an operation input unit 1, a display area dividing unit 2, an illustration image storage unit 3, an alarm range instruction unit 4, a range display program generation unit 5, a screen data storage unit 6, and a screen data transmission unit 7. Become.

  The operation input unit 1 is an interface that generates an input signal based on an operation input by a user, and includes an operation key and a pointing device. The display area dividing unit 2 performs an operation of dividing a display area for displaying the level of control data into a plurality of block areas based on an input signal from the operation input unit 1. This block area is a basic unit when the quantity indicated by the control data is level-displayed by the area of the ON area.

  The illustration image storage unit 3 performs an operation of storing two different illustration images as an on image and an off image. The on-image is an illustration image used for displaying the on-region, and is composed of, for example, image data in a bitmap format. The off image is an illustration image used for displaying the off region, and for example, an image having a luminance or a color different from that of the on image is used. Specifically, various images associated with devices in the PLC are stored as illustration images.

  Here, it is assumed that the on-image 3a and the off-image 3b are image sets, and the on-image 3a and the off-image 3b are associated with each other and a plurality of different image sets are stored in the illustration image storage unit 3.

  The alarm range instructing unit 4 performs an operation of designating an input range for displaying an alarm as the alarm range for the control data in the PLC. For example, a numerical range composed of an upper limit value and a lower limit value is designated as the alarm range based on an operation input by the user.

  The level display program generation unit 5 arranges an on-image in a block area included in the on-area, and arranges an off-image in a block area outside the on-area to generate a program for generating a display screen for displaying control data. An operation to generate as a display program is performed.

  Here, when an alarm range is specified, a program that displays a screen with different on-images depending on whether the control data is within the specified alarm range is generated as a level display program. . Specifically, when the control data falls outside the alarm range, that is, when the control data exceeds the upper limit value of the alarm range and falls below the lower limit value, the alarm image is arranged as an on image.

  The level display program generated by the level display program generation unit 5 is stored in the screen data storage unit 6 as screen data together with the illustration image for each device. The screen data transmission unit 7 performs an operation of sending screen data to the display device 14.

  FIG. 3 is a block diagram illustrating a configuration of a main part of the monitoring system of FIG. 1, and illustrates a configuration example of the display device 14. The display device 14 includes a screen data storage unit 21, a control unit 22, and a display unit 23. The screen data storage unit 21 performs an operation of storing the screen data transferred from the screen data creation device in a rewritable manner.

  The control unit 22 includes a display area division unit 22a, an illustration image arrangement unit 22b, and an alarm range instruction unit 22c. The control unit 22 accesses the PLC 12 based on the screen data, and generates a display screen that displays the control data in the PLC 12. Yes. The display area dividing unit 22a performs processing for dividing the display area into a plurality of block areas.

  The alarm range instructing unit 22c performs processing for designating an alarm range related to control data in the PLC 12. Based on the control data from the PLC 12, the illustration image arrangement unit 22b arranges an on-image in a block area included in the on-area and generates a display screen by arranging an off-image in a block area outside the on-area. Processing is in progress.

  The display unit 23 is an image output unit that outputs a display screen generated by the control unit 22 and includes a panel display such as a liquid crystal panel.

<Screen data creation>
Steps S101 to S105 in FIG. 4 are flowcharts showing an example of operations in the screen data creation apparatus in FIG. First, a display position and a display size of a level display component (level meter) which is a screen component when displaying control data are specified based on a user operation (step S101).

  Next, a memory address (reference device) referred to by the level display component (level display program) is designated (step S102), and the number of divisions for dividing the display area is designated (step S103).

  Then, an illustration image used for level display of control data is designated (step S104), and the designated illustration image and level display program are transferred to the display device as screen data (step S105).

  FIG. 5 is a diagram showing an example of the operation in the screen data creation device of FIG. 2, and shows the state of the level display component 32 arranged in the preview screen 31. The preview screen 31 is a confirmation screen for confirming the layout and display image of the level display component and other screen components, and the same screen as that displayed on the display device 14 is displayed.

  When the user indicates the display position of the level display component 32, the level display component 32 is displayed at the corresponding position in the preview screen 31. In this example, a rectangular display frame 33 surrounding the display area and an illustration image arranged in a block area in the display frame 33 are displayed. In this example, the horizontally long display area is equally divided into five block areas, and on-image sample images 34a “cylinders” are arranged in the respective block areas in the on-area 35, and An off-image sample image 34b is arranged in the block area.

  FIG. 6 is a diagram showing an example of the operation of the screen data creation device of FIG. 2, and shows the state of the device setting screen 41 for inputting information regarding control data to be displayed in a level. The device setting screen 41 is an input screen for inputting information related to a device referred to by a level display component, and includes an input field related to a reference device, an input field related to an input range, and an input field related to an alarm range.

  Specifically, an input box 42a for inputting a memory address in the PLC and an input box 42b for specifying a data format are arranged in the upper part of the screen as input fields related to the reference device. As an input field regarding the input range, an input box 43a for inputting a lower limit value of input data and an input box 43b for inputting an upper limit value of input data are arranged in the middle of the screen. In this example, the level change of the control data input within the range from the lower limit “0” to the upper limit “100” is displayed as a level display component.

  As input fields related to the alarm range, an input box 44 for specifying the alarm range, an input box 45a for inputting the lower limit value of the alarm range, and an input box 45b for inputting the upper limit value of the alarm range are arranged in the lower part of the screen. . Note that when the OK button 46 is pressed, the device setting process ends.

  FIG. 7 is a diagram showing an example of the operation in the screen data creation device of FIG. 2, and shows a state of the level display setting screen 51 for inputting information regarding level display components. This level display setting screen 51 is an input screen for inputting information related to level display components, and is an input field for a display format, an input field for a background in a display frame, an input field for a display frame, and an input for designating an illustration image. It consists of columns.

  Specifically, an input box 52a for designating an absolute value display of control data, an input box 52b for designating a deviation display from a predetermined reference value, and a part thereof are included in the ON area as input fields related to the display format. An input box 52c for designating the processing method of the block area is arranged. Further, an input box 53 for inputting the number of divisions of the display area and an input box 54 for designating the displacement direction of the level display are arranged.

  Specifically, any one of “partial display”, “rounded up”, and “rounded down” can be selected as the processing method for the block area partially included in the ON area. “Partial display” is a processing method in which an on-image is arranged in an area portion included in the on-area and an off-image is arranged in an area outside the on-area in the block area. That is, the on image and the off image are arranged in the block area at a ratio corresponding to the ratio occupied by the on area.

  “Round up” is a processing method for placing an on-image in the block area, and “round-down” is a processing method for placing an off-image in the block area.

  Specifically, “left to right”, “right to left”, “bottom to top”, and “top to bottom” can be designated as the displacement direction of the level display. For example, when “left to right” is designated, control for shifting the pointer in the level display from the left to the right in the horizontal direction in accordance with the level increase of the input data is performed.

  As an input field related to the background in the display frame, an input box 55 for specifying the background and an input box 55a for inputting the background color are arranged. An input box 56 for designating a display frame and an input box 56a for inputting a frame color are arranged as input fields related to the display frame.

  As an input field for designating an illustration image, a selection button 57 for designating an on-image and a preview window 57a for displaying the selected on-image as a sample are arranged. Also, an input box 58a for designating automatic off-image generation, an input box 58b for designating off-image selection, and a preview window 58c for displaying off-image sample images are arranged.

  Further, a selection button 59 for designating an alarm upper limit image, a preview window 59a for displaying the selected alarm upper limit image as a sample, a selection button 60 for designating an alarm lower limit image, and the selected alarm lower limit image A preview window 60a for displaying a sample is arranged.

  When the on-image selection button 57 is pressed, an on-image selection screen stored in the illustration image storage unit is displayed, and an illustration image used for level display is designated as an on-image based on a user operation.

  When automatic off image generation is specified, an off image is automatically created based on the selected on image. For example, the off-image is created by reducing the brightness and contrast of the on-image or by darkening the display color. When off image selection is designated, an off image selection screen stored in the illustration image storage unit is displayed, and an illustration image used for level display is designated as an off image based on a user operation.

  Here, it is assumed that “off image non-use” that does not use an off image can also be selected. When the off image is not used, the display color designated as the background color is displayed in the off image arrangement area in the display area.

  When the alarm upper limit image selection button 59 is pressed, an illustration image selection screen registered in advance as an alarm image is displayed, and an illustration image used for alarm display is designated as the alarm upper limit image based on a user operation. When the alarm lower limit image selection button 60 is pressed, an illustration image selection screen registered as an alarm image is displayed, and an illustration image used for alarm display is designated as an alarm lower limit image based on a user operation.

  Here, it is also possible to select “automatic alarm image generation” for automatically generating an alarm image based on the selected on-image. For example, a warning image is created by pasting a predetermined image (in this example, “!”) On the on-image.

  FIG. 8 is a diagram showing an example of the operation of the screen data creation device of FIG. 2, and shows an example of level display when non-use of off-image is selected. In this example, an on image 61 a is arranged in the on area 35 in the display area, and a background color is displayed in the off image arrangement area 61 b outside the on area 35. In this way, the level can be displayed using only the on-image.

  FIGS. 9A to 9C are diagrams showing an example of the operation of the screen data creation apparatus of FIG. 2, where the input data is 46 when the input range is 0 to 100 and the number of divisions is 5. FIG. A display example is shown. FIG. 9A shows a level display when “partial display” is designated, and FIG. 9B shows a level display when “round up” is designated. (C) shows a level display when “truncated” is designated. In this example, non-use of the off image is selected, and the level display is performed using only the on image.

  In the “partial display”, on-images are arranged at a ratio corresponding to the proportion of the on-area with respect to the block area partially included in the on-area. Specifically, an on-image is arranged at a ratio r1 of 6/20, and an off-image (background image in this example) is arranged at a remaining ratio r2 of 14/20.

  In “round up”, an on-image is arranged in the block area, and the level display is rounded up to 60. On the other hand, in “round down”, an off image, that is, a background image is arranged in the block area, and the level display is cut down to 40.

  FIGS. 10A and 10B are diagrams showing an example of the operation in the screen data creation apparatus of FIG. 2, and two display examples having different displacement directions are shown. FIG. 10A shows a level display when “left to right” is designated as the displacement direction of the level display, and FIG. 10B designates “bottom to top” as the displacement direction. The level display is shown when

  In the horizontal display in which the boundary line A2 (pointer) of the on region is displaced in the horizontal direction, the direction of displacement is easily associated with the illustration image. Therefore, an image with an asymmetric shape (for example, “automobile”) as the on image and the off image. It is desirable to use A1. In particular, for level display in which the pointer A2 is shifted from left to right, an image in which the right direction can be specified is suitable.

  On the other hand, in the vertically long display area, in the vertical display in which the boundary line A2 (pointer) of the ON region is displaced in the vertical direction, an image (for example, “rocket”) A3 having an asymmetrical shape is used as the on image and the off image. Is desirable. In particular, for a level display in which the pointer A4 is shifted from the bottom to the top, an image in which the upward direction can be specified is suitable.

  Furthermore, as illustration images used for such level display, since the quantity for each block is easy to count, there are backgrounds around the character such as "Cylinder", "Automobile" and "Rocket". Is desirable.

<Level display operation>
Steps S201 to S207 in FIG. 11 are flowcharts showing an example of the operation in the display device in FIG. First, a device is referred to by specifying a memory address in the PLC, and control data is acquired (step S201). Next, the ratio of the on image and the off image arranged in each block area in the display area is calculated based on the acquired control data (step S202).

  Next, when the alarm range is designated, it is determined whether or not the input data is within the alarm range (steps S203 and S204). If the alarm data is out of the alarm range, an alarm image is arranged in the ON area. (Step S205).

  On the other hand, if there is no designation of the alarm range or if the input data is within the alarm range, an on-image is arranged in the on-area (step S207). Then, the off image is arranged in the block area outside the on area in the display area, and the display screen is completed (step S206).

  FIGS. 12A to 12C are diagrams showing an example of the operation of the display device of FIG. 3, where the input range is 0 to 50, the alarm range is 20 to 40, and the number of divisions is 5. A display example for each input data is shown. FIG. 12A shows a level display when input data = 36, FIG. 12B shows an alarm display when input data = 15, and FIG. An alarm display in the case of input data = 49 is shown.

  By counting the number of “cars” displayed as on-image characters, the quantity indicated by the input data can be easily determined. In particular, if a target value is designated as the upper limit value of the input range, the ratio of the current value of the input data to this target value can be easily identified.

  In addition, when the input data is out of the alarm range, an alarm image is arranged instead of the on-image, so that it is possible to easily determine an abnormality in the control data (for example, production line delay or overproduction).

  FIGS. 13A and 13B are diagrams showing an example of the operation in the display device of FIG. 3, and show the states of display screens 70 and 73 including a numerical display component 71 and a level display component 72. . FIG. 13A shows a level display using “car” as an illustration image, and FIG. 13B shows a level display using “gradation bar” as an illustration image.

  On the display screen 70, a list showing titles and production status of automobiles is displayed. This list is provided with a vehicle type display column, a current value display column, and a progress display column as item names. Specifically, a numerical value display component 71 (counter) is arranged in the current value display column, and a level display component 72 (level meter) is arranged in the progress status display column.

  For example, for the vehicle type “A”, the level display corresponding to the current value “75” is performed by the illustration image “automobile”. In this example, the display area of the level display component 72 is divided into five block areas, and control data with an input range = 0 to 100 is displayed. The warning range is 20 to 100, and warning display is performed for the vehicle type “B” (current value “15”).

  On the display screen 73, an image “gradation bar” to which a three-dimensional shadow is given by changing the gradation is designated as an illustration image used for the level display component. In this example, since each gradation bar is provided with a frame, the input level can be easily determined.

  In the present embodiment, the control data in the PLC is level-displayed by the illustration image. Therefore, if the illustration image corresponding to the control data is used, the control data can be displayed more intuitively and easily than the numerical display. The control data can be easily specified by the display.

  When the alarm range is designated, the display screen is generated with different on-images depending on whether the control data is within the alarm range. Therefore, when the control data is out of the alarm range, an abnormality in the control data can be effectively notified by a display different from that in the alarm range.

Embodiment 2. FIG.
In the first embodiment, an example in which level display is performed using an illustration image corresponding to control data in the PLC has been described. On the other hand, in the present embodiment, a case will be described in which level display is performed with different image sets based on control data in the PLC.

  FIG. 14 is a diagram showing an operation example in the display device according to the second embodiment of the present invention, and the on-image arranged in the display area of the level display component 81 is changed based on the control data in the PLC. The situation is shown. In the display device according to the present embodiment, control data stored at a specific memory address in the PLC is read, and an illustration image used as an image set is changed based on the read control data. This control data is registered in advance in the PLC as identification information for designating an image set.

  In this example, a plurality of types of products are manufactured in one production line, and in the production line “B”, “Jeep” was initially manufactured, and the number of units produced was displayed on the level display component 81 (display screen) 80). When the production of “Jeep” is completed, production of “Wagen” is started on the production line “B”, and the illustration image used for the level display component is changed in accordance with the product switching. That is, in the display screen 82 after product switching, “Wagen” is used for the level display component 83 instead of “Jeep”.

  According to the present embodiment, since the display screen is generated by changing the image set based on the control data in the PLC designating the image set, even if the type of the control data is switched, Appropriate display is performed, and control data can always be specified correctly.

  In the present embodiment, an example has been described in which the illustration image used for the level display component is made different based on specific control data in the PLC, but the present invention is not limited to this. For example, the level display may be performed by changing the number of divisions of the display area based on specific control data in the PLC.

  FIG. 15 is a diagram showing another example of the operation of the display device according to the second embodiment of the present invention, showing how the number of divisions of the display area 91 is changed based on the control data in the PLC. Yes. In this level display component, the division number of the display area is changed without changing the area size based on the control data stored in a specific memory address in the PLC, and the block area in the display area in which the division number is changed. An illustration image is placed on the screen. This control data is registered in advance in the PLC as identification information for designating the input range.

  Specifically, the number of divisions is increased in accordance with the increase in the level of input data, and the illustration image is reduced and arranged in each block area in the display area where the number of divisions is increased. At that time, from the viewpoint of ease of determination when determining the input level based on the number of on-images arranged in each block area, the level allocation amount allocated to one block is not changed before and after the division number change. To do.

  In this example, the level display of the input range = 0 to 50 and the number of divisions = 5 is changed to the level display of the input range = 0 to 60 and the number of divisions = 6 based on specific control data in the PLC. . Alternatively, the number of divisions is reduced in accordance with the level reduction of the input data, and the illustration image is enlarged and arranged in each block area in the display area where the number of divisions is reduced.

  Thereby, even when the input range of the control data is switched, the level display by the illustration image is appropriately performed without changing the area size, so that the control data can always be displayed correctly. Further, when the number of divisions is changed as the input range is switched, the area size of the display area does not change, so that the level display component can be prevented from interfering with other screen components on the screen.

Embodiment 3 FIG.
In the first embodiment, the example in which the on-image is changed when the input data is out of the alarm range has been described. In contrast, in the present embodiment, a case will be described in which the on-image is changed when the input data exceeds the upper limit value of the alarm range, and the off-image is changed when the input data is lower than the lower limit value of the alarm range.

  FIG. 16 is a diagram showing an example of the operation of the display device according to the third embodiment of the present invention, and shows the state of the level display component 90 in which the alarm image is arranged in the off-image arrangement area in the display area 91. ing. This example shows an alarm display of input data = 15 when the input range is 0 to 50, the alarm range is 20 to 40, and the number of divisions is 5.

  An on image 92a is arranged in the on area in the display area 91, and an alarm image 92b is arranged in the off image arrangement area outside the on area. Thereby, it is possible to easily determine the alarm display when the input data falls below the lower limit value of the alarm range.

  In the first and second embodiments, the example in which the illustration image used for the level display component is made different based on the control data in the PLC for level display has been described, but the present invention is not limited to this. For example, the level display may be performed by changing the number of divisions of the display area based on the control data in the PLC for level display.

  That is, an input data comparison unit that compares control data in the PLC to be displayed with a predetermined threshold is provided, and the display area dividing unit changes the area size based on the control data comparison result by the input data comparison unit. Increase the number of display area divisions without doing so. It is conceivable that the illustration image arrangement unit is configured to reduce the illustration image in each block area in the display area where the number of divisions is increased.

  Specifically, when the input data exceeds a predetermined threshold within the input range, the level display is performed by increasing the number of divisions of the display area. At that time, an illustration image is arranged by reducing the display size for each block area whose area size is reduced by increasing the number of divisions. Also, from the viewpoint of ease of determination when determining the input level based on the number of on-images arranged in each block area, the level allocation amount allocated to one block is not changed before and after the division number change. .

  With this configuration, when the input level of the control data approaches the upper limit value of the input range, the level display is performed by automatically increasing the number of display area divisions without changing the area size. Therefore, the control data in the PLC can always be displayed correctly. Further, since the area size of the display area does not change when the number of divisions is changed, it is possible to prevent the level display component from interfering with other screen components on the screen.

It is the block diagram which showed an example of schematic structure of the monitoring system containing the display apparatus by Embodiment 1 of this invention. FIG. 2 is a block diagram illustrating a configuration of a main part of the monitoring system in FIG. 1, in which a configuration example of a screen data creation device 13 is illustrated. FIG. 2 is a block diagram illustrating a configuration of a main part of the monitoring system in FIG. 1, in which a configuration example of a display device 14 is illustrated. 3 is a flowchart showing an example of an operation in the screen data creation device of FIG. 2. FIG. 3 is a diagram showing an example of an operation in the screen data creation device of FIG. 2, and shows a state of a level display component 32 arranged in a preview screen 31. FIG. 3 is a diagram showing an example of an operation in the screen data creation apparatus in FIG. 2, and shows a state of a device setting screen 41 for inputting information related to control data. FIG. 3 is a diagram showing an example of an operation in the screen data creation device of FIG. 2, and shows a state of a level display setting screen 51 for inputting information on level display components. It is the figure which showed an example of the operation | movement in the screen data creation apparatus of FIG. 2, and the example of the level display at the time of selecting non-use of an off image is shown. FIG. 4 is a diagram showing an example of an operation in the screen data creation apparatus of FIG. 2, and a level display of input data = 46 is shown. It is the figure which showed an example of the operation | movement in the screen data creation apparatus of FIG. 2, and the two display examples from which a displacement direction differs are shown. 4 is a flowchart illustrating an example of an operation in the display device of FIG. 3. It is the figure which showed an example of the operation | movement in the display apparatus of FIG. 3, and the mode of the level display for every input data is shown. FIG. 4 is a diagram showing an example of an operation in the display device of FIG. 3, and shows a state of display screens 70 and 73 including a numerical display component 71 and a level display component 72. FIG. 10 is a diagram showing an operation example in the display device according to the second embodiment of the present invention, and shows a state in which an on-image arranged on the level display component 81 is changed. It is the figure which showed the other example of operation | movement in the display apparatus by Embodiment 2 of this invention, and a mode that the division | segmentation number of the display area 91 is changed is shown. It is the figure which showed an example of operation | movement in the display apparatus by Embodiment 3 of this invention, and the mode of the level display component 90 by which the alarm image is arrange | positioned in the off image arrangement | positioning area | region is shown. It is the figure which showed the principal part of the display screen in the conventional display apparatus. It is the figure which showed the other example of the display screen in the conventional display apparatus, and the counter 120 which displays a number in the rectangular-shaped display frame is shown.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Operation input part 2 Display area division part 3 Illustration image memory | storage part 4 Alarm range instruction | indication part 5 Level display program production | generation part 6 Screen data memory | storage part 7 Screen data transmission part 10 Monitoring system 11 Program creation tool 12 PLC
13 Screen data creation device 14 Display device 21 Screen data storage unit 22 Control unit 22a Display area division unit 22b Illustration image arrangement unit 22c Alarm range instruction unit 23 Display unit 32 Level display component 33 Display frame 34a On image 34b Off image 35 On region

Claims (9)

In the display device that displays the level of the control data in the programmable logic controller on the screen according to the area of the ON region in the display area,
An illustration image storage means for storing two different illustration images as an on-image and an off-image;
Display area dividing means for dividing the display area into two or more block areas;
A display comprising: an illustration image arrangement means for arranging the on image in a block area included in an on area and arranging the off image in a block area outside the on area to generate a display screen. apparatus.   The illustration image arrangement means arranges an on-image in an area portion included in the on-area and an off-image in an area portion outside the on-area for a block area partially included in the on area. The display device according to claim 1. Comprising an alarm range indicating means for specifying an alarm range relating to the control data;
The illustration image arrangement means, when an alarm range is designated, generates a display screen with different on-images or off-images depending on whether or not the control data is within the designated alarm range. The display device according to claim 1.   4. The display device according to claim 3, wherein the illustration image arrangement means changes an on-image when the control data is out of an alarm range.   4. The display according to claim 3, wherein the illustration image arrangement means changes the on-image when the control data exceeds the upper limit value of the alarm range, and changes the off-image when the control data falls below the lower limit value of the alarm range. apparatus. The illustration image storage means stores two or more different image sets, with the on-image and off-image as image sets,
The display device according to claim 1, wherein the illustration image arrangement unit generates a display screen by changing the image set based on control data in the programmable logic controller that designates the image set. The display area dividing means changes the number of divisions of the display area without changing the area size based on the control data in the programmable logic controller that specifies the input range,
The display device according to claim 1, wherein the illustration image arranging unit arranges an illustration image in each block region in the display area in which the number of divisions is changed. Input data comparison means for comparing the control data with a predetermined threshold value,
The display area dividing means increases the number of divisions of the display area without changing the area size based on the comparison result of the control data by the input data comparing means,
2. The display device according to claim 1, wherein the illustration image arrangement means arranges the illustration image in a reduced size in each block area in the display area in which the number of divisions is increased. Operates based on the screen data creation device that creates screen data and the screen data created by the screen data creation device, and displays the control data in the programmable logic controller on the screen according to the area of the ON area that occupies the display area And a display device
The screen data creating apparatus includes illustration image storage means for storing two different illustration images as an on-image and an off-image,
Display area dividing means for dividing the display area into two or more block areas;
A level for generating a level display program as a program for generating a display screen for displaying control data by arranging the off image in a block area outside the on area and arranging the off image in a block area included in the on area. Display program generation means;
A data display system comprising screen data transmission means for transmitting each illustration image and the level display program as screen data to the display device.

Images