JP2006133516A - Display device for control, display control program, and recording medium - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To manage data necessary for screen display efficiently on a memory. <P>SOLUTION: In the memory 24, a record data list is recorded, and a plurality of record data are combined to constitute the record data list. In the record data, component identification data for receiving input to any of a plurality of areas constituting a display screen and identifying the area where the input is received, a definition data referring address AD 1 referring to execution content defining data defining prescribed content of processing, and definition data referring address AD 2 referring to other record data to be referred to are correlated to each other. An event execution section 29, based on the component identification data and the record data list, specifies execution content definition data being made to correspond to the inputted area and executes a prescribed processing defined in the execution content definition data. Thus, the data necessary for screen display is efficiently managed on the memory, and the processing such as screen display can be executed at high speed. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a display device for control, a display control program, and a recording medium that can efficiently manage data necessary for screen display and device control on a memory.

  Conventionally, a graphic operation panel including a programmable display has been widely used as an HMI (Human Machine Interface) of a control system (see Patent Document 1 described later).

  The graphic operation panel displays the state of the device on the operation screen to notify the operator, accepts an operation on the operation screen by the operator, and controls the device according to the operation.

Here, in such a control system, in many cases, an operation screen is displayed on a graphic operation panel based on so-called screen data created by a user using a drawing editor device. Such screen data normally has a static data structure in which a plurality of definition data called tags are continuously stored. For example, there is Patent Document 1 as a document disclosing such a static data structure.
Japanese Patent Laid-Open No. 10-333830 (Publication date: December 18, 1998)

  However, the conventional apparatus has the following problems due to the fact that the screen data has a static data structure.

  First, it is necessary to unconditionally secure a memory area necessary for the maximum number of components displayed on the screen. Therefore, a memory area for component data that is not used for the current screen display is also unconditionally secured, and there is a possibility that the memory area is wasted.

  In the static data structure, the maximum number of component data stored in the screen data needs to be fixed in advance when designing the screen. Therefore, when new component data is added, it is necessary to recreate the screen data from the beginning, and the data update flexibility is lacking.

  Furthermore, since the data structure is statically fixed, when new information is added to each component data, the influence on other component data becomes large, and the data update is not easy. For example, since data is arranged in a row in the memory area, if there is an error in writing information, there is a possibility that incorrect writing is performed up to the next consecutive data.

  Also, when displaying the screen, it is necessary to check from the beginning to the end of the reserved memory area. As a result, it is necessary to access even part data that is not included in the current display screen, and there is a possibility that extra time is required for the processing.

  The present invention has been made in view of the above problems, and an object thereof is to provide a display device for control and a display control program capable of efficiently managing data necessary for screen display and device control on a memory. And providing a recording medium.

  In order to solve the above-described problem, the display device for control according to the present invention accepts input to any of the areas on the display screen constituted by a plurality of areas, and stores area identification data for identifying the received areas. Area input means to output, the above area identification data, definition data reference address referring to execution contents definition data defining predetermined processing contents, and records referring to other record data to be referred to A storage unit that records a record data list configured by combining a plurality of record data associated with data reference addresses, and the region input means based on the region identification data and the record data list. The execution content definition data associated with the received area is identified, and the execution content definition data It is characterized by comprising a process execution means for executing predetermined processing being defined.

  According to the configuration described above, for example, when the area input unit that presses down the area on the screen by the user accepts, the process execution unit executes a predetermined process to be executed when there is an input to the area.

  At this time, the process execution means specifies execution content definition data corresponding to the input area based on the record data list. This record data list is composed of a plurality of record data, and each record data has a so-called dynamic list structure having a record data reference address for referring to other record data to be referred to. .

  Therefore, the process execution means executes a predetermined process, for example, a display of a unit screen or an event process to be executed when there is an input to an area in the screen by accessing only necessary data. can do. That is, the control display device has an effect of further increasing the processing speed when performing processing such as screen display.

  Each execution content definition data is stored in a memory area different from the record data list. Therefore, when adding record data to the record data list or deleting record data from the record data list, there is no need to access existing execution content definition data. Therefore, there is an effect that the possibility of destroying data can be minimized when increasing or decreasing the record data in the record data list.

  Furthermore, since the execution content definition data and the record data list necessary for the screen display are used, the necessary memory area can be minimized, and the memory area can be saved.

  Further, the control display device according to the present invention is a screen configured by combining a tag indicating the correspondence relationship between an area on the screen of the control display device and a device corresponding to display or input in each area. It is preferable to further include record list creation means for generating the record data list and the execution content definition data based on the data.

  According to the above configuration, a record data list having a dynamic data structure is generated based on screen data having a static data structure. Therefore, it is possible to increase the processing speed and reduce the memory area consumption compared to the case where screen data is used for screen display or predetermined processing for input to the area is performed. Play.

  In the control display device according to the present invention, the terminal-side communication means that receives the execution content definition data from an external terminal device, and the definition data that refers to the execution content definition data based on the execution content definition data. It is preferable to further comprise record data creating means for creating record data including a reference address, and record data adding means for adding the record data to the record data list.

  According to the above configuration, new record data is added to the record data list. This record data refers to new execution content definition data transmitted from the external terminal device. Therefore, first, there is an effect that the area constituting the screen can be newly increased.

  At this time, each record data constituting the record data list and each execution content definition data referenced from this record data are stored in a separate memory area in the storage unit. Therefore, when adding new record data, it is not necessary to access existing execution content definition data. In addition, rewriting of existing record data can be minimized.

  Therefore, when adding a new area to the display screen, the possibility of destroying existing data can be minimized.

  The control display device according to the present invention preferably further includes a storage unit that stores the execution content definition data received by the terminal-side communication unit in the screen data.

  According to the above configuration, since the execution content definition data is stored in the screen data, the update of the display screen can be reflected on the screen data level. Therefore, it is possible to generate a record data list for reproducing a display screen to which a new area is added based on the updated screen data.

  The control display device may be realized by a computer. In this case, a display control program for realizing the control display device on the computer by operating the computer as each of the above means and a computer-readable recording medium on which the display control program is recorded also fall within the scope of the present invention. .

  As described above, the control display device according to the present invention includes processing execution means for executing a predetermined process based on a record data list having a dynamic list structure, and thus is necessary for screen display and device control. Data can be efficiently managed on the memory, and the processing can be executed more quickly.

  An embodiment of the present invention will be described with reference to FIGS.

  The control system of the present invention is a system for controlling the device 60 provided in the target system. This control system is suitably used for controlling the device 60 such as a belt conveyor type automatic assembly machine. In the following, prior to describing the control display device 20 of the present invention, first, the entire configuration of the control system including the control display device 20 will be described in detail.

[Control system]
FIG. 1 is a block diagram showing a detailed configuration of a control system including a control display device 20 according to an embodiment of the present invention. As shown in this figure, the control system according to the present invention has a configuration comprising a drawing editor device 10, a control display device 20, a terminal device 40, a PLC 50, and a device 60.

[Screen Editor 10]
The drawing editor device 10 is a device for creating screen data used for screen display in the control display device 20. The drawing editor apparatus 10 includes a drawing processing unit 12 and a communication unit 14. The operator creates a display screen by combining individual component images such as switches and lamps on the screen using dedicated editor software. At this time, the drawing processing unit 12 generates screen data used by the control display device 20 to display the screen based on the screen created by the operator. Further, the communication unit 14 transmits the screen data generated by the drawing processing unit 12 to the drawing editor side communication unit 22 of the control display device 20.

[PLC50, device 60]
The PLC 50 is a control device that controls the device 60. Examples of the device 60 include various switches and lamps provided in the target system. These devices may be arbitrary as long as they can be specified by the control display device 20 by some device address. For example, the device may be the device 60 itself, or may be an area of a storage device provided in the control system such as the PLC 50 or a storage device mounted on the control display device 20.

[Control Display Device 20]
The control display device 20 displays the state of the device 60, accepts an operation on the device 60 by an operator, and outputs an instruction to control the device 60 to the PLC 50. At this time, the control display device 20 displays a component image representing each device 60 or the like on the display 25 configured by a liquid crystal display or the like based on the screen data generated in the drawing editor device 10. When the operator operates the control display device 20 and depresses (touches) each component image displayed on the terminal device 40, the control display device 20 causes a control instruction to the device 60 or another The display is switched to the screen.

  The control display device 20 is a kind of so-called programmable display. That is, the control display device 20 displays on the display 25 a display screen provided to the operator for controlling the device 60 based on screen data described later. In addition, by receiving an input from the operator on the display 25, the device 60 is controlled and the screen display on the display 25 is updated.

  In the control system, as shown in FIG. 1, the control display device 20 is connected to each PLC 50 via a communication line such as a serial cable. In FIG. 1, for convenience of explanation, two PLCs 50 connected to the control display device 20 and one device 60 connected to each PLC 50 are displayed. However, the control system including the control display device 20 can optionally include the necessary number of PLCs 50 and devices 60 according to the scale of the target system.

  As described above, the control display device 20 displays the screen represented by the screen data on the display 25 based on the screen data created in the drawing editor device 10 and transmitted to the control display device 20. At this time, the control display device 20 extracts data related to the screen display of the component and definition data defining the execution contents for the input operation by the operator from the screen data having a static data structure. Then, the data necessary for displaying the display screen is constructed on the memory 24 as a dynamic list structure. Based on the dynamic list structure thus constructed, the control display device 20 performs an actual screen display or executes a predetermined process corresponding to the component touched by the operator.

[Details of Control Display Device 20]
The control display device 20 having such characteristics will be described in detail with reference to FIG. As shown in FIG. 1, the control display device 20 includes a control unit 21, a drawing editor side communication unit 22, a screen data storage unit 23 (screen data storage unit), a memory 24 (storage unit), a display 25, a touch panel 26 ( Area input means), terminal side communication section 27 (terminal side communication means), record list creation section 28 (record data creation means, record list creation means, record data addition means), event execution section 29 (process execution means), and A PLC side communication unit 30 is provided.

[Control unit 21]
The control unit 21 comprehensively controls each member provided in the control display device 20. For example, the screen data received by the drawing editor side communication unit 22 is stored in the screen data storage unit 23.

[Graphic editor side communication unit 22]
The drawing editor side communication unit 22 receives the screen data transmitted from the drawing editor device 10 and outputs the screen data to the control unit 21.

[Screen Data Storage Unit 23]
The screen data storage unit 23 stores screen data received through the PLC side communication unit 30.

[Memory 24]
The memory 24 stores a record data list generated by a record list creation unit 28 described later.

[Display 25]
The display 25 displays a display screen. When the operator touches the component image displayed on the display 25, the control display device 20 executes a predetermined process associated with each component. Details of this will be described later.

[Touch panel 26]
The touch panel 26 receives an input by an operator to any of the components on a display screen including a plurality of components (regions), and outputs component identification data (region identification data) for identifying the received components. That is, the touch panel 26 detects a touch operation by an operator on any part in the display screen displayed on the display 25. Thereafter, the touch panel 26 outputs component identification data for specifying the component touched by the operator.

[Terminal side communication unit 27]
The terminal-side communication unit 27 receives the component data transmitted from the terminal device 40 and outputs it to the control unit 21. Details of this will be described later.

[Record list creation unit 28]
The record list creation unit 28 generates a record data list to be described later based on the screen data. Details of how the record list creation unit 28 generates the record data list will be described later. The record list creation unit 28 generates record data to be newly added to the record data list and execution content definition data referenced by the record data based on the component data received by the terminal side communication unit 27. Details of this processing will also be described later.

[Event execution unit 29]
The event execution unit 29 specifies execution content definition data corresponding to the area touched by the operator based on the component identification data and the record data list, and executes predetermined processing defined in the execution content definition data.

[PLC side communication unit 30]
The PLC-side communication unit 30 communicates with the PLC 50 through a communication line, and transmits the control content for the device 60 based on the predetermined processing content executed by the event execution unit 29 to the PLC 50. Further, data indicating the state of the device 60 is received from the PLC 50.

[Screen data]
The screen data generated in the drawing processing unit 12 and transmitted to the control display device 20 is a combination of a tag indicating the correspondence between the area on the screen and the device 60 corresponding to display or input in each area. It is configured. By using this screen data, the control display device 20 can switch and display a plurality of unit screens. In addition, the tag includes a file number indicating a unit screen in which the tag is valid, an event name that specifies processing content to be executed on the unit screen, and reference information that is referenced for each event. The screen data composed of such tags has a static data structure in which a plurality of tags are continuously arranged.

[Record Data List]
The record list creation unit 28 creates a record data list that takes a dynamic list type data structure based on the static structure screen data. For example, the record list creation unit 28, component identification data for identifying a component defined in a tag, definition data reference address that refers to execution content definition data that defines predetermined processing content, One record data is generated by associating the record data reference address referring to the next record data (other record data to be referred to) with each other. Then, the record list creating unit 28 generates a record data list by combining a plurality of record data. Finally, the record list creation unit 28 stores the generated record data list in the memory 24 through the control unit 21.

  Hereinafter, an example in which the record list creation unit 28 creates a record data list necessary when three parts are displayed on the display screen will be described with reference to FIGS. 2 and 3.

  As shown in FIG. 2A, the screen G1 includes a part S1, a part S2, and a part S3. An example of the record data list necessary for displaying this screen G1 is shown in FIG.

[Generate record data list]
The record list creation unit 28 examines each tag included in the screen data and first identifies a tag necessary for the current screen display. Then, the execution content definition data is extracted from these tags. The execution content definition data includes, for example, the type of image data of the component to be displayed, the coordinates for displaying the image, the type of operation mode such as bit / word, the address to the device 60, the constant (data to be written), etc. Predetermined processing contents and constants relating to the components constituting the display screen are defined.

[Generation of Record Data L1 and Execution Content Definition Data D1]
First, the record list creating unit 28 is referred to from the record data corresponding to the part S1 and the record data based on the tag corresponding to the part S1 which is the first part stored in the screen data, and the operator selects the part. Execution content definition data D1 that defines a predetermined process to be executed when S1 is touched is created.

  At this time, the record list creation unit 28 first generates a component identification data ID1, which is data for identifying the component S1, which is defined in the tag corresponding to the component S1. Next, the record list creation unit 28 extracts a predetermined processing content to be executed by the event execution unit 29 when the component S1 is displayed or the operator touches the component S1, and an execution content definition is performed based on the extracted information. Data D1 is created. That is, the execution content definition data D1 is a type of data that defines predetermined processing content executed by the event execution unit 29. The record list creation unit 28 secures a memory area necessary for storing the execution content definition data on the memory 24 using a dynamic memory allocation function or the like, and creates the created execution content in the reserved memory area. Stores definition data D1.

  Next, the record list creation unit 28 accesses the memory area in which the execution content definition data D1 is stored, and extracts the head address. The record list creation unit 28 creates record data L1 as data in which the definition data reference address AD1 that is the extracted address is associated with the above-described component identification data ID1. In addition, the record list creating unit 28 secures a memory area for storing the record data L1 on the memory 24, and stores the record data L1 in the secured memory area.

  In this way, the record list creation unit 28 creates on the memory 24 both the record data L1 corresponding to the part S1, which is the first part, and the execution content definition data D1 referenced from the record data L1. . That is, by executing the above processing, the execution content definition data D1 and the record data L1 referring to the execution content definition data D1 are stored in different memory areas on the memory 24, respectively. .

[Generation of Record Data L2 and Execution Content Definition Data D2]
After creating the record data L1, the record list creation unit 28 records the record data L2 corresponding to the part S2 and the record based on the tag corresponding to the part S2 being the second part stored in the screen data. Execution content definition data D2 that defines a predetermined process that is referred to from the data L2 and that is executed when the operator touches the component S2 is created.

  At this time, the record list creation unit 28 first generates a component identification data ID2, which is data for identifying the component S2, which is defined in the tag corresponding to the component S2. Next, the record list creation unit 28 extracts a predetermined processing content to be executed by the event execution unit 29 when the component S2 is displayed or when the operator touches the component S2, and defines an execution content based on the extracted information. Data D2 is created. That is, the execution content definition data D2 is a type of data that defines predetermined processing content executed by the event execution unit 29. Then, the record list creating unit 28 secures a memory area necessary for storing the execution content definition data D2 on the memory 24 using a dynamic memory securing function or the like, and creates the created execution area in the secured memory area. Stores the content definition data D2.

  Next, the record list creation unit 28 accesses the memory area in which the execution content definition data D2 is stored, and extracts the head address. The record list creation unit 28 creates record data L2 as data in which the definition data reference address AD2 that is the extracted address is associated with the above-described component identification data ID2. Further, the record list creating unit 28 secures a memory area for storing the record data L2 on the memory 24, and stores the record data L2 in the secured memory area.

  Thus, the record list creating unit 28 creates on the memory 24 record data L2 corresponding to the part S2, which is the second part, and execution content definition data D2 referenced from the record data L2. That is, by executing the above processing, the execution content definition data D2 and the record data L2 referring to the execution content definition data D2 are stored in different memory areas on the memory 24, respectively. .

  Further, the record list creation unit 28 accesses the memory area storing the record data L2 in the memory 24, and extracts the head address. Then, the record list creation unit 28 stores the extracted address as the record data reference address N1 in the record data L1. By performing such processing, the record data L1 refers to the execution content definition data D1 by the internal definition data reference address AD1, and at the same time stores the record data L2 as the next record data by the record data reference address N1. Will refer to it.

  By performing the processing as described above, the record data and the record data list generated by the record list creation unit 28 have the following configuration. That is, the record data refers to one piece of execution content definition data that is not referenced by any other definition data reference address among the component identification data and the execution content definition data defining the predetermined processing content. The definition data reference address and the record data reference address that references one record data that is not referenced by any other record data reference address among other record data are associated with each other. Yes. As a result, the record data list is configured by combining a plurality of such record data.

  In the control display device 20, the event execution unit 29 can easily search the memory 24 for record data L2, which is the next record data of the record data L1, based on the record data L1, so that the processing speed Will improve.

[Generation of Record Data L3 and Execution Content Definition Data D3]
After creating the record data L1 and the record data L2, the record list creation unit 28 records the record data L3 corresponding to the part S3 based on the tag corresponding to the part S3 that is the third part stored in the screen data. And execution content definition data D3 that defines a predetermined process that is referred to from the record data L3 and that is executed when the operator touches the component S3.

  At this time, the record list creation unit 28 first generates a component identification data ID3, which is data for identifying the component S3, which is defined in the tag corresponding to the component S3. Next, the record list creation unit 28 extracts a predetermined processing content to be executed by the event execution unit 29 when the component S3 is displayed or the operator touches the component S3, and an execution content definition is performed based on the extracted information. Data D3 is created. In other words, the execution content definition data D3 is a type of data defining predetermined processing content executed by the event execution unit 29. Then, the record list creating unit 28 secures a memory area necessary for storing the execution content definition data D3 on the memory 24 using a dynamic memory securing function or the like, and creates the created execution area in the secured memory area. The content definition data D3 is stored.

  Next, the record list creation unit 28 accesses the memory area in which the execution content definition data D3 is stored, and extracts the head address. The record list creation unit 28 creates record data L3 as data in which the definition data reference address AD3, which is the extracted address, is associated with the above-described component identification data ID3. Further, the record list creation unit 28 secures a memory area for storing the record data L3 on the memory 24, and stores the record data L3 in the secured memory area.

  Next, the record list creation unit 28 accesses the memory area storing the record data L3 in the memory 24, and extracts the head address. Then, the record list creation unit 28 stores the extracted address as the record data reference address N2 in the record data L2. By performing such processing, the record data L2 refers to the execution content definition data D2 by the internal definition data reference address AD2, and at the same time stores the record data L3 as the next record data by the record data reference address N2. Will refer to it.

  That is, in the control display device 20, the event execution unit 29 can easily search the record data L3, which is the next record data, on the memory 24 based on the record data L2, thereby improving the processing speed. To do.

  The record data L3 is the last record data in the record data list. Therefore, the record list creation unit 28 stores a terminator indicating that there is no next record data referred to by the record data L3 in association with the record data L3. By doing so, the event execution unit 29 can easily determine that the record data L3 is the last record data in the record data list. Therefore, the event execution unit 29 can reliably end the search for each data based on the record data list.

  Through the processing described above, the record list creation unit 28 creates a record data list that is dynamic list data including the record data L1 to L3. The control display device 20 executes a predetermined process based on the record data list. That is, the event execution unit 29 of the control display device 20 displays a screen to be displayed on the display 25. Further, predetermined processing corresponding to the part touched by the operator is executed.

  By creating such a record data list having a dynamic structure, the control display device 20 has the effects described below. That is, first, it is only necessary to secure a memory area for storing data corresponding to the components necessary for the current screen display, so that it is not necessary to secure an unnecessary memory area, and the memory can be used effectively. In addition, since it is not necessary to determine the maximum number of memory areas to be fixed when creating screen data, execution content definition data and record data can be added as long as there is an empty memory area. it can. Therefore, even when it is desired to change the maximum number of stored execution content definition data and record data, it is not necessary to change the screen data.

〔Screen display〕
In the control display device 20, the event execution unit 29 displays a predetermined unit screen based on the record data list stored in the memory 24. Therefore, the operation when the event execution unit 29 displays the unit screen shown in FIG. 2A based on the record data list will be described.

  The event execution unit 29 first refers to the execution content definition data D1 referred to by the definition data reference address AD1 included in the record data L1, based on the first record data L1 included in the record data list. Then, the event execution unit 29 executes the processing content defined in the execution content definition data D1. For example, the component S1 is displayed on the screen G1 by executing the display of the component image defined in the execution content definition data D1.

  Next, the event execution unit 29 specifies the record data L2 referred to by the record data reference address N1 based on the record data reference address N1 included in the record data L1. Then, the event execution unit 29 refers to the execution content definition data D2 referenced by the definition data reference address AD2 included in the record data L2. Then, the event execution unit 29 executes the processing content defined in the execution content definition data D2. For example, the component S2 is displayed on the screen G1 by executing the display of the component image defined in the execution content definition data D1.

  Next, the event execution unit 29 specifies the record data L3 referred to by the record data reference address N2 based on the record data reference address N2 included in the record data L2. Then, the event execution unit 29 refers to the execution content definition data D3 referred to by the definition data reference address AD3 included in the record data L3. Then, the event execution unit 29 executes the processing content defined in the execution content definition data D3. For example, the component S3 is displayed on the screen G1 by executing display of the component image defined in the execution content definition data D3.

  Finally, the event execution unit 29 ends the series of processes by confirming that the terminator is included in the record data L3. In this way, the event execution unit 29 displays the screen G1 on the display 25 based on the record data list. As described above, in the control display device 20, since the screen G1 is displayed based on the record data list having the dynamic data structure, it is necessary to access an unnecessary tag when displaying the screen. The screen display can be completed more quickly than.

[Process corresponding to touch operation]
In the screen G1 displayed on the display 25 by the above processing, an input (touch operation) by an operator can be received in each of the components S1 to S3. The control display device 20 executes predetermined processing corresponding to each component based on the touch operation. At this time, the event execution unit 29 of the control display device 20 also uses the record data list that is dynamically expanded on the memory 24. The operation in this case will be described below.

  First, a process when the operator touches the component S1 will be described. When the operator touches the component S1, the touch panel 26 detects this, generates component identification data ID1 for identifying the component S1, and outputs it to the control unit 21. The control unit 21 outputs the component identification data ID1 to the event execution unit 29.

  When the component identification data ID1 is input, the event execution unit 29 accesses the record data list stored in the memory 24, and first specifies the first record data L1. Next, the event execution unit 29 determines whether or not the component identification data ID1 is associated with the record data L1. As described above, the component identification data ID1 is associated with the record data L1. Therefore, the event execution unit 29 specifies the execution content definition data D1 referenced by the definition data reference address AD1 based on the record data L1. Then, the event execution unit 29 executes a predetermined process defined in the execution content definition data D1.

  Here, as shown in FIG. 3, the execution content definition data D1 defines a process of turning on a bit when the component S1 is touched. Based on this, the event execution unit 29 turns on the bit.

  Next, the event execution unit 29 specifies record data L2, which is the next record data of the record data L1, in the record data list based on the record data reference address N1 included in the record data L1. Here, the component identification data associated with the record data L2 is not the component identification data ID1 but the component identification data ID2. Therefore, the event execution unit 29 does not particularly perform any processing.

  Next, the event execution unit 29 specifies record data L3, which is the next record data of the record data L2, based on the record data reference address N2 stored in the record data L2. Here, the component identification data associated with the record data L3 is not the component identification data ID1 but the component identification data ID3. Therefore, the event execution unit 29 does not particularly perform any processing. At this time, the event execution unit 29 confirms that the terminator is included in the record data L3, and ends the series of operations.

  Through the above processing, the event execution unit 29 executes predetermined processing when the component S1 is touched by the operator using the record data list having a dynamic list structure. Even when the component S2 or the component S3 is touched by the operator, the event execution unit 29 searches for each record data in the record data list one after another by following the addresses in order as described above. The record data associated with the component identification data for identifying the identified component is identified. Then, the event execution unit 29 executes a predetermined process corresponding to the touched component based on the execution content definition data referenced from the record data. Thereby, in the control display device 20, when the component S2 is touched, the lamp is displayed if the bit is ON. When the component S3 is touched, the screen is switched.

[Switching the unit screen]
As shown in FIG. 2, the control display device 20 can switch the unit screen. For example, the screen G2 illustrated in FIG. 2B includes a component S4 and a component S5. Here, in the control display device 20, when switching the screen display from the screen G1 to the screen G2, the record list creation unit 28 accesses the screen data again, and records data lists corresponding to the parts S4 and S5 and Execution content definition data is dynamically generated and stored in a memory area secured on the memory 24. The event execution unit 29 displays the screen G2 on the terminal device 40 based on the record data list generated by the record list creation unit 28 for displaying the screen G2. Also, a predetermined operation corresponding to the touch operation by the operator on the component S4 or the component S5 is executed.

  Further, the control display device 20 can display the sub screen on the unit screen without switching the unit screen. For example, the sub screen G′1 including the component S6 is displayed on the screen G2 illustrated in FIG. At this time, record data corresponding to the component S6 is added to the record data list in addition to the components S4 and S5 described above. That is, the record list creation unit 28 creates record data corresponding to the part S6 and adds it to the record data list, while creating execution content definition data corresponding to the part S6 and securing the memory area on the memory 24. To store.

  Then, the event execution unit 29 simultaneously displays the component S4 and the sub screen G′1 including the component S6 on the terminal device 40 based on the record data list.

  As described above, since the record data list has a dynamic structure, the control display device 20 can minimize processing required for switching the display screen. For example, unlike the conventional apparatus, it is not necessary to access all tags in the screen data every time the screen is switched. Therefore, the processing speed can be improved and the memory consumption can be minimized.

  As described above, the record data list stored in the memory 24 has a dynamic list structure. Therefore, adding record data to the record data list or removing record data from the record data list can be executed easily and at high speed. This specific example will be described with reference to FIGS. 4 and 5. FIG.

[Removing record data from the record data list]
FIG. 4 is a diagram showing that unnecessary record data is removed from the record data list. As shown in this figure, when unnecessary record data is removed from the record data list, the reference destination of the definition data reference address AD2 included in the record data may be changed. This process is performed by the record list creation unit 28.

  In the example shown in FIG. 4, the record list creation unit 28 removes the record data L2 included in the record data list from the record data list. At this time, the record list creation unit 28 changes the definition data reference address AD2 included in the record data L1, which is the record data before the record data L2, from the record data reference address N1 to the record data reference address N2.

  As a result, the next record data referred to by the record data L1 becomes the record data L3, and the record data included in the record data list is reduced from three to two.

  At this time, the execution content definition data referred to by each record data is not modified or deleted at all. As described above, in the control display device 20, the record data list has a dynamic list structure, so that deletion of record data in the record data list can be executed extremely easily and in a short time. Each execution content definition data is stored in a separate memory area in the memory 24 and is not continuous. Thereby, since the possibility of erroneous data access to each execution content definition data is extremely low, it is possible to manage and update data more safely, for example, it is easier to prevent the execution content definition data from being destroyed.

[Adding record data to the record data list]
An example of adding new record data to the record data list will be described with reference to FIG. FIG. 5 is a diagram showing that new record data has been added to the record data list. As shown in this figure, when adding new record data to the record data list, the terminator included in the last record data may be replaced with the definition data reference address AD2 referring to the new record data. . This process is also performed by the record list creation unit 28.

  That is, in the example shown in FIG. 5, the record list creation unit 28 secures a memory area on the memory 24 for execution content definition data D4 that is new execution content definition data and record data L4 that is new record data. And generate. Then, the record list creation unit 28 accesses the record data L4 and extracts the head address as the definition data reference address AD3. The record list creation unit 28 replaces the terminator included in the record data L3 with the definition data reference address AD3. The record data L4 includes a terminator.

  By performing such processing, the record data L3 is in a state of referring to the record data L4 that is the next record data. Further, since the record data L4 includes a terminator, it is the last record data in the record data list. Thereby, record data L4 is newly added to the record data list as the last record data.

  In this case, since the record data list has a dynamic list structure, the record list creation unit 28 only secures a memory area necessary for storing newly added data and corrects a part of the record data. Can be added. That is, the data can be added easily and quickly compared to the case where the data required for the screen display has a static structure.

  Further, as in the case of deleting record data from the record data list, the possibility of unnecessary data access to other execution content definition data is low. Therefore, each execution content definition data can be managed more safely.

[Addition of parts using terminal device 40]
The record data may be added to the record data list based on data transmitted from the terminal device 40 connected to the control display device 20 through a network line. That is, the operator operates the terminal device 40 to create part data related to the part to be added. In the terminal device 40, the part data creation unit 42 creates part data. The communication unit 44 transmits the component data created by the component data creation unit 42 to the terminal side communication unit 27 of the control display device 20.

  The terminal side communication unit 27 outputs the received component data to the record list creation unit 28 via the control unit 21. The record list creation unit 28 adds new record data based on the received component data and adds it to the record data list. Further, execution content definition data referenced by a definition data reference address included in the record data is created and stored in a memory area secured in the memory 24.

  By performing such processing, a new component can be added to the display screen displayed on the control display device 20. At this time, parts can be added without redesigning the screen data from the beginning. Further, new execution content definition data can be added without changing any other execution content definition data. That is, in the conventional apparatus, when it is desired to add even one part, it is necessary to redesign the screen data in the drawing editor apparatus 10, and the function expansion flexibility is lacking. On the other hand, in the control display device 20 of the present invention, the display screen and control operation of the control display device 20 can be easily and flexibly expanded.

  The control display device 20 may additionally store a tag corresponding to a new part in the screen data stored in the screen data storage unit 23 based on the added record data and execution content definition data. Good. For example, in this case, the control unit 21 reflects the expansion of the screen display at the screen data level.

[Modify execution definition data]
Further, in the control display device 20, since the record data list has a dynamic list structure, even if the execution content definition data referred to by each record data is updated, other execution content definition data and records are recorded. There is no risk of affecting data. By utilizing this fact, the control display device 20 can change the parts displayed on the unit screen without changing the configuration of the record data list.

  This example will be described with reference to FIG. FIG. 6 is a diagram illustrating an example in which the definition content of the execution content definition data referred to by the record data included in the record data list is changed. In this figure, among the record data list and the execution content definition data shown in FIG. 3, the definition content of the execution content definition data D2 is changed from “ramp display at bit ON” to “button display at bit ON”. is there. The update of the execution content definition data is performed by the record list creation unit 28.

  At this time, the record list creation unit 28 updates only the execution content definition data D2 without making any change to the record data included in the record data list, or the execution content definition data D1 and the execution content definition data D3. is doing. Therefore, the record list creation unit 28 can change the lamp displayed on the communication unit 44 to a button by performing screen display processing based on the record data list after the execution content definition data D2 is updated.

  As described above, the control display device 20 can change the screen display without changing the record data list. That is, the process for changing the screen display can be completed significantly faster than the conventional apparatus that uses static structure data.

  The record list creation unit 28 described above, when creating the record data list, includes component identification data for identifying the component defined in the tag, execution content definition data defining predetermined processing content, and One record data may be created by associating each other with a record data reference address referring to the next record data (record data to be referred to). That is, the record list creation unit 28 may create record data in which the execution content definition data and the record data reference address are integrated. Also in this case, the record list creation unit 28 creates a record data list by combining a plurality of record data.

  Even if the execution content definition data and the record data reference address are integrated, and the execution content definition data itself is incorporated in the dynamic list structure, the control display device 20 also performs the above-described operation. The same effect as that obtained can be obtained.

[Display control program and recording medium]
Moreover, each of the members described above is a functional block. Therefore, these members are realized by a calculation unit such as a CPU executing a program stored in a storage unit (not shown) and controlling peripheral circuits such as an input / output circuit (not shown).

  Accordingly, an object of the present invention is to provide a control display for a recording medium in which program codes (execution format program, intermediate code program, source program) of a display control program, which is software that realizes the functions described above, are recorded so as to be readable by a computer This can be achieved by the computer (or CPU, MPU, DSP) provided to the device 20 and provided in the control display device 20 reading and executing the program code recorded on the recording medium.

  In this case, the program code itself read from the recording medium realizes the above-described function, and the recording medium on which the program code is recorded constitutes the present invention. Specifically, the control display device 20 is realized by a predetermined display control program stored in a storage unit (not shown) being executed by an arithmetic means (such as a microprocessor) not shown.

  On the other hand, each member described above may be realized as hardware such as a circuit that performs the same processing as the software described above. In this case, the object of the present invention is achieved by the control display device 20 which is hardware.

  Further, the calculation means may have a single configuration. Or the structure which the some calculating means connected via the bus | bath in the inside of the display apparatus 20 for control and various communication paths cooperates and performs the code | cord | chord of a display control program may be sufficient.

  Here, the program code itself that can be directly executed by the computing means, or the program as data that can generate the program code by processing such as decompression described later, stores these programs or data in a recording medium, The recording medium is distributed, or the program is transmitted by a communication network for transmission via a wired or wireless communication path and distributed by the computing means. .

  At this time, the communication network is not particularly limited, and specifically, the Internet, intranet, extranet, LAN, ISDN, VAN, CATV communication network, virtual private network, telephone line network, mobile body Communication networks, satellite communication networks, etc. can be used. Further, the transmission medium (communication path) constituting the communication network is not particularly limited, and specifically, IrDA or a remote control may be used even with a wired line such as IEEE 1394, USB, power line carrier, cable TV line, telephone line, ADSL line or the like. It is also possible to use wireless such as infrared, Bluetooth, 802.11 wireless, HDR, mobile phone network, satellite line, terrestrial digital network.

  Note that it is preferable that the recording medium for distributing the display control program is removable. However, it does not matter whether the recording medium after the display control program is distributed is removable. Further, as long as the recording medium is a medium in which a program is recorded, it does not matter whether it is rewritable (writeable) or volatile, and the recording method and shape are not questioned.

  Examples of such recording media include tapes such as magnetic tapes and cassette tapes, magnetic disks such as floppy (registered trademark) disks and hard disks, CD-ROMs, magneto-optical disks (MO), mini-discs (MD), and digital video. A disk such as a disk (DVD). The recording medium for storing the program may be a card such as an IC card or an optical card, or a semiconductor memory such as a mask ROM, EPROM, EEPROM, or flash ROM. Alternatively, it may be a memory formed in a calculation means such as a CPU.

  It is assumed that a program for reading the program code from the recording medium and storing it in the main memory and a program for downloading the program code from the communication network are stored in advance in the apparatus so as to be executable by a computer.

  The program code may be any code that instructs all means of each process described above to the arithmetic means. Alternatively, if a basic program (for example, an operating system or a library) that can execute part or all of each process already exists by calling the program code in a predetermined procedure, the calling of the basic program is performed. A part or all of the whole procedure may be replaced by a code or a pointer for instructing the arithmetic means.

  In addition, the format for storing the display control program in the recording medium may be any storage format that can be accessed and executed by the computing means, for example, in a state of being arranged in the real memory. Or the storage format after installation in a local recording medium (for example, a real memory or a hard disk) that is always accessible by the computing means before being placed in the real memory, or a communication network or a transportable recording medium Therefore, it may be a storage format before being installed on a local recording medium.

  Further, the display control program is not limited to the object code after being compiled, but may be stored in the recording medium as source code or intermediate code generated during interpretation or compilation. In any case, intermediate processing can be performed by decompressing the compressed information, decompressing the encoded information, interpreting, compiling, linking, or placing in real memory, or a combination of these processes. If the code can be converted into a format that can be executed by the computing means, the same effect can be obtained regardless of the format in which the display control program is stored in the recording medium.

  In addition, this invention is not limited to embodiment mentioned above, A various change is possible in the range shown to the claim. In other words, embodiments obtained by combining technical means appropriately changed within the scope of the claims are also included in the technical scope of the present invention.

  The present invention can be used as a control display device that performs status display and control of devices operating in a target system such as a programmable display device.

It is a block diagram which shows the detailed structure of the control system containing the display apparatus 20 for control which concerns on one Embodiment of this invention. It is a figure which shows an example of the display screen displayed on the display 25 of the control display apparatus 20, (a) is a figure which shows the example in which three components are displayed on a screen, (b) is two figures on a screen. It is a figure which shows the example in which components are displayed, (c) is a figure which shows the example in which a sub screen is displayed on the same screen. It is a figure which shows an example of the execution content definition data which the record data list which the record list preparation part produces | generates and each record data contained in a record data list refers. It is a figure which shows having removed the record data which became unnecessary from the record data list. It is a figure which shows having added new record data to the record data list. It is a figure which shows the example which changed the definition content of the execution content definition data referred by the record data contained in a record data list.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Drawing editor apparatus 12 Drawing processing part 14 Communication part 20 Control display device 21 Control part 22 Drawing editor side communication part (drawing editor side communication means)
23 Screen data storage unit (screen data storage means)
24 Memory (storage unit)
25 Display 26 Touch panel 27 Terminal side communication unit 28 Record list creation unit (record data creation means, record list creation means, storage means)
29 Event execution part (process execution means)
30 PLC side communication unit 40 terminal device 42 component data creation unit 44 communication unit 50 PLC
60 devices

Claims (6)

On a display screen composed of a plurality of areas, an area input means for receiving input to any area and outputting area identification data for identifying the received area;
The area identification data, the definition data reference address that refers to the execution content definition data that defines the predetermined processing content, and the record data reference address that refers to other record data to be referenced are associated with each other. A storage unit that records a record data list composed of a combination of a plurality of record data,
Based on the area identification data and the record data list, the execution content definition data associated with the area received by the area input means is specified, and a predetermined process defined in the execution content definition data is performed. A control display device comprising processing execution means for executing the control display device.   The record data list and execution content definition based on the screen data that is composed of a combination of tags that indicate the correspondence between the area on the screen of the control display device and the device corresponding to the display or input to each area. The control display device according to claim 1, further comprising a record list creation means for generating data. Terminal-side communication means for receiving the execution content definition data from an external terminal device;
Based on the execution content definition data, record data creation means for creating record data including a definition data reference address for referring to the execution content definition data;
The control display device according to claim 1, further comprising record data adding means for adding the record data to the record data list.   4. The control display device according to claim 3, further comprising storage means for storing the execution content definition data received by the terminal side communication means in the screen data.   A display control program for operating the control display device according to any one of claims 1 to 4, wherein the computer functions as each of the above means.   A computer-readable recording medium storing the display control program according to claim 5.

Images