JP2014102567A - Control system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a programmable display that facilitates dynamic switching between enlarged display and reduction display of an object according to a state of a change factor.SOLUTION: A control object OBJ performs control so as to switch and display multiple unit objects OBJ1 to OBJn. A change determination part 103 of the control object OBJ gives a display switching part 105 a notice, if a change factor monitored by a state monitoring part 211 changes into a specific state. In response to the notice, the display switching part 105 of the control object OBJ switches one of the displayed unit objects OBJ1 to OBJn to another one and displays it. Each part of the unit objects OBJ1 to OBJn in the control object OBJ is provided in the control object OBJ or a host computer.

Description

  The present invention relates to a control system including a programmable display that dynamically enlarges or reduces an object included in an image to be displayed.

  The programmable display device includes a display unit that displays an image, a touch panel for touch input, an interface for communication with a connected device, and a control unit that controls the above-described units. Such a programmable display is an operation having a function of displaying an operation status of the device on an image displayed on the display unit or receiving an operation input for giving a control instruction to the device from a touch panel on the display unit. It is a type indicator.

  In general, since the programmable display device has a graphic display function, it can display switches, indicator lights, meters, and the like on images prepared in advance, and serves as an operation terminal in the control system. In the control system, the display of the operating status of each device and the control instruction to the device are performed by a programmable display arranged near the device.

  Parts such as switches and figures expressed on the image are handled as objects. In a programmable display, an object is enlarged or reduced and displayed for a specific purpose.

  For example, Patent Document 1 describes that an abnormality occurrence part is enlarged and displayed in an image for monitoring and controlling a building facility. Patent Document 2 describes that, in an image that displays the operating state of each device that constitutes a plant, when abnormality occurs in the device, the abnormality information and the enlarged information of the abnormality occurrence site are displayed. .

Japanese Patent Laid-Open No. 7-129679 (published May 19, 1995) JP-A-8-44424 (published February 16, 1996)

  In the conventional programmable display, in order to enlarge or reduce the size of the object, prepare an object with a size corresponding to the enlargement / reduction ratio, and specify the change element to show or hide these objects. It switched when it became the state of.

  Here, the change element is an element that causes some change reflecting various environments and situations in which the programmable display is used. More specifically, the changing element is an element that changes due to an internal or external factor (such as data generated by a user operation), or an element that changes simply (such as time).

  For example, when the object A that is not enlarged is displayed in the state A and the enlarged object B is displayed in the state B, the object A is displayed but the object B is displayed in the state A. On the other hand, in the state B, it is necessary to prepare a program that does not display the object A but displays the object B.

  As described above, in the conventional programmable display, it is possible to dynamically change the enlarged display or the reduced display of the object according to the changing element. However, the larger the number of states, the more complicated the setting using the above program. In addition, each time a state is added, it is necessary to set whether to display or hide each object. For this reason, there is an inconvenience that the dynamic change of the enlarged display or reduced display of the object according to the state cannot be easily used.

  The present invention has been made in view of the above-described problems, and an object of the present invention is to easily perform dynamic display change of enlargement display or reduction display of an object according to a state in a programmable display.

  In order to solve the above-described problem, a control system according to one embodiment of the present invention includes a host computer and a programmable display connected to be communicable with the host computer, and the programmable display has a unique function. A storage means for storing image data including a plurality of unit objects and a control object that controls the unit object, and a state monitoring means for monitoring a change in a change element registered in advance, and the control object includes the control object, When it is determined that the change element has changed to a state within a specific range, the displayed unit object corresponds to the state within the specific range by the object switching unit provided in the control object or the host computer. Switch to the unit object to be displayed. It is characterized in.

  In the above configuration, the change of the registered change element is monitored by the state monitoring unit. In the control object, when the monitored change element changes to a state within a specific range, the object switching unit switches the displayed unit object to the unit object corresponding to the specific state and displays it. Is done.

  As a result, a control object having a plurality of unit objects having different display sizes can be handled like a conventional single object. Therefore, the enlarged or reduced display of the control object can be dynamically displayed only by setting the state where each change element for switching the unit object is in a specific range and the unit object corresponding to the state to the control object. A changing image can be created. Therefore, the number of images for dynamically displaying images can be reduced, and the time required for creating images can be reduced.

  Further, the object switching unit may be provided in the control object or may be provided in the host computer. When the object switching unit is provided in the host computer, the control object uses the function of the object switching unit through communication between the host computer and the programmable display.

  In the control system, the object switching unit includes a state management unit that manages the specific range of the change element registered in the state monitoring unit as the state, and a state in the specific range of the change element. A state that manages the correspondence with the unit object-an object management unit, and refers to the correspondence between the state in the specific range managed by the state-object management unit and the unit object, and the state The state management unit manages the unit object according to the update of the correspondence between the state in the specific range managed by the state-object management unit and the unit object. Preferably, the specific range is updated.

  As a result, by registering a range for a change element that needs to be monitored in a specific range managed by the state management unit, only the change element can be monitored. In addition, the object switching unit can switch and display the unit objects simply by referring to the correspondence between each state in the specific range managed by the state-object management unit and the unit object.

  Also, when the specific range of change elements to be newly managed increases, if the correspondence between the state in the specific range and the unit object is added to the state-object management unit, it is managed by a new type of state management unit A specific range is added. Therefore, the function can be expanded only by adding the correspondence between the state in the new specific range and the unit object without changing the overall structure. Therefore, new unit objects and new change elements can be easily supported.

  The object switching unit is provided in the host computer, and the state management unit updates the correspondence between the state within the specific range managed by the state-object management unit and the unit object. The specific range managed may be updated according to the above.

  As a result, the host computer updates the correspondence between the state and the unit object in the specific range managed by the state-object management unit, and the specific range managed by the state management unit. The above update can be facilitated.

  In the control system, the state monitoring unit registers a plurality of individual monitoring units corresponding to the change element and monitors the change element in response to a request for registration of the change element so as to monitor the change of the change element. It is preferable that a registration receiving unit that determines the individual monitoring unit to be used is provided, and the individual monitoring unit directly notifies the object switching unit that a change factor has changed.

  In the above configuration, only by receiving a registration request, the registration receiving unit determines an individual monitoring unit to register the change element. Then, the individual monitoring unit that has registered the change element directly notifies the object switching unit that the change element has changed. Thereby, cooperation with a state monitoring means and a control object can be performed smoothly.

  In the control system, it is preferable that the change element is a zoom level that is a degree of zooming an image displayed based on the image data. Or in the said control system, it is preferable that the said change element is the data acquired from the external apparatus.

  In the above configuration, when the change element is the zoom level, an operation for changing the zoom level is performed, and the display of the unit object is switched when the zoom level changes to a specific state. Accordingly, it is possible to dynamically change the enlarged display or the reduced display by switching the unit objects having different display sizes in accordance with the operation for changing the zoom level.

  Further, when the change element is data acquired from an external device, for example, when the data acquired from the PLC changes to a state in a specific range, the display of the unit object is switched. Accordingly, it is possible to dynamically change the enlarged display or the reduced display by switching the unit objects having different display sizes according to the data.

  According to an aspect of the present invention, when the change element is in a specific state, the control object switches and displays a plurality of unit objects having different display sizes. Therefore, it is possible to easily change the dynamic enlargement display or reduction display of the object according to the state in the programmable display.

It is a block diagram which shows the structure of the control system which concerns on one Embodiment of this invention. It is a figure which shows the relationship between the state monitoring part provided in the programmable display in the said control system, and the control object contained in the image data displayed on the said programmable display. It is a figure which shows the image showing the layout of a manufacturing line. It is a figure which expands and shows a part of the said image which displayed the alarm display component at the time of expansion. (A) is a figure which shows the image showing the layout of the whole plant equipment, (b) is a figure which shows the state which expanded and displayed the part of the said image, (c) is shown to (b). It is a figure which shows the state which expanded and displayed a part of image. (A)-(d) is a figure which shows the image which displays the work progress in the manufacturing process of a motor vehicle.

  One embodiment of the present invention is described below with reference to FIGS.

  FIG. 1 is a block diagram illustrating a configuration of a control system 1 according to the present embodiment.

  As shown in FIG. 1, the control system 1 according to this embodiment includes a programmable display 2, a host computer 3, a network 4, a programmable logic controller 5 (hereinafter referred to as “PLC 5”), and a device 6. I have.

  The programmable display 2 is connected to the host computer 3 via the network 4. The network 4 is a communication network including a local area network (LAN (Local Area Network)) made of Ethernet (registered trademark) or the like that can perform communication using a common communication protocol, and the Internet.

  The host computer 3 manages control data (recipe data) to be given to the PLC 5 and various data acquired from the programmable display 2 and functions as the center of control in the control system 1. For this reason, the host computer 3 transmits recipe data to the programmable display 2 or receives various data collected and stored in the programmable display 2 from the programmable display 2. Data provided from the programmable display 2 is alarm data, sampling data, and the like. These data will be described in detail later.

  The host computer 3 has a storage device 31 composed of a hard disk or the like, and stores the above data in the storage device 31. The storage device 31 stores a control object setting file. This control object setting file is a file that defines processing performed by a control object OBJ (see FIG. 2) described later.

  The PLC 5 (external device) captures the state of the input source device 6 via the input unit, and gives a control instruction to the output destination device 6 via the output unit. The PLC 5 performs the above operation at every predetermined scan time such as several tens of ms, for example, according to a sequence program (such as a ladder program) created by the user.

  As the input source device 6, devices such as sensors (temperature sensors, optical sensors, etc.) and switches (push button switches, limit switches, pressure switches, etc.) are used. As the output destination device 6, an actuator, a relay, a solenoid valve, a display, or the like is used. These devices 6 are arranged in required parts of various target systems such as a production line and constitute a part of the control system 1.

  The memory (device memory) in the PLC 5 stores data (word data or bit data) indicating the state of the device 6 (output value from the device 6 or set value to the device 6) in an area specified by the device address. doing. In the memory, a word device and a bit device are set. The word device is set as an area for storing word data such as numeric values as input / output data, and is designated by a word address (device address). The bit device is set as an area for storing bit data such as an on / off state, and is set by a bit address (device address). Thereby, by designating a device address and accessing an arbitrary word device or bit device in the memory, the device 6 can be controlled, or data relating to the state of the device 6 can be individually taken out.

  A storage area equivalent to the device memory can also be provided in the programmable display 2. For example, such a storage area may be a specific area in the data memory 26 provided for storing data input by the user from the touch panel 23 described later.

  The programmable display device 2 includes a CPU (Central Processing Unit), a ROM (Read 0nly Memory), a RAM (Random Access Memory), a storage device, and the like. The CPU executes instructions of an HMI control program (control program) that realizes each function. The ROM stores the HMI control program, and the RAM expands the HMI control program. The storage device is configured by a memory or the like and stores various data.

  The programmable display 2 is a dedicated computer that realizes a specific operation function and display function by displaying input operation and display image data created by the user, and is suitably used as an HMI device. The image data includes process definition information that defines various processes related to input operations and display operations. The programmable display 2 can specify an operation for displaying the state of the device 6 and an operation for controlling the state of the device 6 according to an input operation based on such image data.

  Moreover, the programmable display 2 communicates with PLC5 via the communication cable 7 by the communication function, acquires the state of each device 6 memorize | stored in the memory of PLC5, for example, the below-mentioned display part 22 The status of each device 6 is displayed. Moreover, the programmable display 2 transmits a control instruction etc. to PLC5 according to the input operation to the below-mentioned touch panel 23 with the communication function. Furthermore, since the programmable display 2 is communicably connected to the host computer 3 via the network 4, data is transmitted to and received from the host computer 3 by its communication function.

  The acquisition / change of the state of the device 6 may be instructed each time. Alternatively, a temporary memory space is prepared in the programmable display device 2 and, at the time of acquisition / change, the memory space is accessed and communicated with a predetermined PLC 5 after a predetermined time or a predetermined event. Communication with the PLC 5 may be performed every time to synchronize with the entity to which each address is assigned.

  In order to realize the above functions, the programmable display 2 includes a control unit 21, a display unit 22, a touch panel 23, interface units (I / F in the figure) 24 and 25, a data memory 26, a user, A memory 27, a working memory 28, and a memory card interface unit (memory card I / F in the figure) 29 are provided. Hereinafter, each main part of the programmable display device 2 will be described in detail.

  The display unit 22 is preferably a flat panel display panel such as a liquid crystal panel, an EL panel, or a plasma display panel in order to configure the programmable display 2 to be thin. The touch panel 23 is an input device provided for performing touch input on the display surface of the display unit 22.

  The interface unit 24 is a communication control unit for the programmable display 2 to communicate with the host computer 3, and is connected to the network 4. The interface unit 24 is configured to be able to perform network communication based on the IP address of the host computer 3.

  On the other hand, the interface unit 25 is a communication control unit for the programmable display device 2 to communicate with the PLC 5. The interface unit 25 is configured to perform serial communication control when the PLC 5 is a model that performs serial communication, and to perform network communication when the PLC 5 is a model that performs network communication. The interface unit 25 performs communication using a communication protocol corresponding to the manufacturer and model of the PLC 5 when performing serial communication control.

  The data memory 26 is configured by SRAM or DRAM, and stores data obtained from the PLC 5 and data generated by the programmable display 2. The data memory 26 also stores data obtained from external devices other than the PLC 5. Since the data memory 26 stores different types of data as described above, the data memory 26 does not necessarily need to be configured as a single memory, and may be configured as different types of memory depending on the type of data, or may be the same memory. Even if it exists, it is preferable to change a storage area according to the kind of data.

  Examples of data obtained from the PLC 5 include sampling data and alarm data. Examples of the data generated by the programmable display 2 include operation log data.

  The sampling data is data obtained by the PLC 5 from the device 6 and is stored in the data memory 26 along with the generation time.

  The alarm data is data related to an alarm confirmed by the PLC 5. In the PLC 5, when an abnormality or the like occurs, an alarm bit set in a predetermined bit device enters a state (ON or OFF) indicating an alarm, or an alarm value is written in a predetermined word device. The alarm data is created by the control unit 21 together with the date and time when the content of the alarm is changed, based on the state of these devices, in order to notify the user of the alarm data. Data.

  Examples of data obtained from an external device other than the PLC 5 include data taken from an external device such as a temperature controller, an inverter, or a barcode reader. Data obtained from the external device includes control data such as the above-described recipe data given from the host computer 3.

  The user memory 27 (storage means) is a memory for storing image data, the above communication protocol, etc., and FEPROM (Flash Erasable and Programmable ROM) is used. Since FEPROM is a rewritable read-only flash memory, it plays the role of a hard disk drive in a general personal computer. A flash memory does not have a movable part and is resistant to impacts, and thus operates stably even in a poor ambient environment.

  The image data is image data for one frame displayed on the programmable display 2. Usually, a series of related image data corresponding to the control system 1 and products manufactured by the control system 1 are prepared as a set of files and stored in the user memory 27.

  The image data is created by image creation software, and is configured such that a part image as an object is arranged on the base image, a figure as an object is drawn, or text is described.

  Examples of the figure include a point, a line, a triangle, a quadrangle, and a circle.

  Parts images include switches (on / off switches, changeover switches, pushbutton switches, etc.), lamps, numeric keys, various display parts (for example, numerical display parts, meter display parts, graph display parts, alarm display parts, etc.) Provided in image creation software. In the component image, the processing content for realizing the function is set as the above-mentioned processing definition information. For example, the switch object includes processing definition information that defines the processing content of rewriting the value of the bit device specified by a desired bit address between “0” and “1” when a touch operation is performed. It is preset by image creation software.

  The objects included in the image data are not only objects having a single function as described above (single functions OBJ1 to OBJn to be described later) but also such objects depending on the state of change elements to be described later. It also includes a control object OBJ that can be switched and displayed. The control object OBJ will be described in detail later.

  The work memory 28 is composed of, for example, a DRAM, and is used for temporary storage of data exchanged with the PLC 5 in addition to being used for work during arithmetic processing such as display control.

  The memory card interface unit 29 is a reader / writer that writes and reads data to and from the memory card 8. As the memory card 8, a small and large-capacity CF (registered trademark) card is suitable.

  The control unit 21 acquires the state of the device 6 connected to the PLC 5 as state data from the device memory (external device memory) of the PLC 5 by communicating with the PLC 5 at predetermined time intervals or at predetermined events. The control unit 21 writes the state data acquired in this way into a temporary memory space prepared in the programmable display 2, for example, a specific area (state memory area) in the above-described working memory 28. In addition, the control unit 21 displays a state represented by data written in a data storage area prepared in the programmable display 2, for example, a specific area (internal device memory) of the data memory 26, on the screen of the programmable display 2. To display.

  On the other hand, the control unit 21 rewrites data in the external device memory by communicating with the PLC 5 in accordance with an operation on the touch panel 23 provided on the display unit 22 of the programmable display 2. Further, the control unit 21 rewrites the data in the internal device memory in accordance with an operation on the touch panel 23 or the like.

  The control unit 21 performs an operation for acquiring the state data of the device 6 from the PLC 5 and reflecting it in the display state of the object in the image, and an operation for instructing a change in the state of the device 6 according to the operation on the object. And specified by the process definition information defined in the component image.

  The control unit 21 as described above is a functional block realized by causing the above-described CPU included in the programmable display device 2 to execute the above-described HMI control program.

  The program code (execution format program, intermediate code program, source program) of the HMI control program can be recorded on a computer-readable recording medium configured to be separable from the programmable display device 2. The program code may be installed in the programmable display 2 from the above recording medium.

  Examples of the recording medium include magnetic tapes such as magnetic tapes and cassette tapes, magnetic disks such as floppy (registered trademark) disks / hard disks, and optical disks such as CD-ROM / MO / MD / BD / DVD / CD-R. Can be used. In addition, as the recording medium, a card system such as an IC card (including a memory card) / optical card or a semiconductor memory system such as a mask ROM / EPROM / EEPROM (registered trademark) / flash ROM can be used. .

  In addition, since the programmable display 2 is connected to the network 4, the program code may be supplied via the network 4. The network 4 is not particularly limited. For example, the Internet, intranet, extranet, LAN, ISDN, VAN, CATV communication network, virtual private network, telephone line network, mobile communication network, satellite communication. A net or the like is available. Further, the transmission medium constituting the network 4 is not particularly limited. For example, in the case of wired such as IEEE1394, USB, power line carrier, cable TV line, telephone line, ADSL line, etc., infrared rays such as IrDA and remote control, Bluetooth ( (Registered trademark), 802.11 wireless, HDR, mobile phone network, satellite line, terrestrial digital network, and the like can also be used.

  The function of the control unit 21 can also be realized in the form of a computer data signal embedded in a carrier wave, in which the program code is embodied by electronic transmission.

  The control unit 21 includes a state monitoring unit 211 in order to switch and display the above-described control object included in the image data according to the state of the change element.

  Here, the control object will be described together with the description of the state monitoring unit 211. FIG. 2 is a diagram illustrating a relationship between the state monitoring unit 211 and the control object OBJ.

  As shown in FIG. 2, the control object OBJ is switched so as to display a plurality of independent unit objects OBJ1 to OBJn prepared in advance according to the state of the change element that can be detected by the programmable display device 2. It has a function of controlling the unit objects OBJ1 to OBJn. Each unit object has a unique function in which a conventional object having a unique function such as a lamp or a switch or a group of a plurality of such conventional objects is grouped. The unit object can change properties such as its own color and line thickness, but does not have a function of switching the display by itself, that is, a function of completely different display modes. The control object OBJ includes a state management unit 101, a registration request unit 102, a change determination unit 103, a state-object management unit 104, and a display switching unit 105 in order to realize the function of controlling the unit objects OBJ1 to OBJn. doing.

  Note that the control object OBJ and the unit objects OBJ1 to OBJn are functionally separated as shown in FIG. 2 for convenience of explanation, but are described in an integrated manner as a program language.

  The state management unit 101 includes a state management list 101a. The state management list 101a defines specific ranges of change elements corresponding to the unit objects OBJ1 to OBJn, respectively, and is a value that serves as a condition for switching the unit objects OBJ1 to OBJn (for example, as change elements described in detail later). This is a list including at least one zoom level value. A specific range is defined by at least one type of change element, but the range may be specified by a combination of a plurality of types of change elements. Examples of the combination include a combination of the internal temperature of the device 6 and the ambient temperature of the device 6. When the range is actually specified, an AND process or an OR process of a range determined by each temperature may be performed.

  The state management unit 101 manages the specific range of the change element as the specific state of the change element in the state management list 101a, and the change element to be newly managed and the range are added to the control object OBJ. Then, the value for switching the change element and the unit objects OBJ1 to OBJn in the change element, that is, the value at the end of the range is added to the state management list 101a. Specifically, the state management unit 101 adds the value of the change element so as to reflect the update of the correspondence between the specific range and the unit objects OBJ1 to OBJn based on the value of the change element in the state-object management unit 104. ·Update.

  As described above, a specific range is defined with the registered value as a boundary, and displayed OBJ1 to OBJn are switched corresponding to this range. In addition, a new object displayed corresponding to a specific range may be added.

  The registration request unit 102 requests the status monitoring unit 211 to register, among the change elements managed in the state management list 101a, a change element that needs to be monitored.

  The change determination unit 103 changes until the change element is in a specific range when the change of the registered change element is notified by the state monitoring unit 211 as the changed state of the change element. It is determined with reference to the state management list 101a. When the change determination unit 103 determines that the change element to be monitored is in the specific range, that is, the change element is in the specific range, the change determination unit 103 displays the specific state. 105 is notified. In this way, the change determination unit 103 determines whether or not the change element has changed to a state within a specific range by cooperating with the state monitoring unit 211.

  The state-object management unit 104 includes a state-object correspondence list 104a. The state-object correspondence list 104a is a list that manages a plurality of the above states and the unit objects OBJ1 to OBJn in association with each other. Based on the state-object correspondence list 104a, the state-object management unit 104 manages the association between the state where the change element is in a specific range and the unit objects OBJ1 to OBJn. Alternatively, the state-object correspondence list 104a may associate a specific range of change elements with the unit objects OBJ1 to OBJn individually.

  In addition, when a new change element to be managed is added to the control object OBJ, the state-object management unit 104 associates the state in the specific range of the change element with the unit objects OBJ1 to OBJn. Add to the state-object correspondence list 104a. As described above, the state-object management unit 104 can update the association between the state where the change element is in a specific range and the unit objects OBJ1 to OBJn. The specific range is determined by adding a value that defines both ends or one end of the range to the state-object correspondence list 104a.

  The display switching unit 105 switches the display of the unit objects OBJ1 to OBJn based on the specific range of the change element notified from the change determination unit 103. Specifically, the display switching unit 105 refers to the state-object correspondence list 104a, and the unit objects OBJi (i = 1, 2,...) Corresponding to the notified specific range from the unit objects OBJ1 to OBJn. n-1 or n) is selected and the display is switched to the unit object OBJi.

  The state monitoring unit 211 (state monitoring unit) registers a change element that has received a registration request from the registration request unit 102, monitors the registered change element, and changes the change element when the change element changes. The notification of having occurred is generated as a changed state. Further, the state monitoring unit 211 directly gives the above notification to the control object OBJ (change determination unit 103) without using the registration receiving unit 211. In order to realize this function, the state monitoring unit 211 includes a registration receiving unit 211a, and a plurality of first monitoring units MTR1, second monitoring units MTR2,..., M-th monitoring unit MTRm (individual monitoring unit). ing.

  Upon receiving the change element registration request from the state management unit 101, the registration receiving unit 211a identifies the change element, and registers the change element as one of the corresponding first to m-th monitoring units MTR1 to MTRm. Instruct one. That is, the registration receiving unit 211a determines which of the first to m-th monitoring units MTR1 to MTRm monitors the change element requested for registration based on the registration request. When a plurality of types of change elements are registered, an AND condition or an OR condition necessary for defining a range is also registered.

  The first to m-th monitoring units MTR1 to MTRm register change elements assigned to them in response to an instruction from the registration receiving unit 211a, and monitor the registered change elements. The first to m-th monitoring units MTR1 to MTRm monitor the change of the change element with reference to information that can be acquired inside the programmable display 2 and information that can be acquired from the outside of the programmable display 2. Furthermore, when the change element changes, the first to m-th monitoring units MTR1 to MTRm directly notify the change determination unit 103 of the degree of the change.

  In addition, although the registration reception part 211a is provided in the state monitoring part 211, instead of providing the registration reception part 211a, the control object OBJ may have a function equivalent to the registration reception part 211a.

  Further, as described above, the process executed by the control object OBJ may be a configuration defined by the control object OBJ itself (a configuration defined by the programmable display 2 side), but is specified elsewhere. It may be configured. For example, when the processing executed by the control object OBJ is defined in the host computer 3, the functions of the units 101 to 105 (object switching unit) included in the control object OBJ are specified in the above-described control object setting file. The

  In the case of this configuration, the control object OBJ transmits the change element registration request received from the host computer 3 to the state monitoring unit 211, and transmits a change notification from the state monitoring unit 211 to the host computer 3. Further, the control object OBJ receives the object switching request from the host computer 3 and performs switching display of the unit objects OBJ1 to OBJn. The control object OBJ includes unit objects OBJ1 to OBJn, and the series of processes described above are defined.

  As described above, even if the substance of the process of the control object OBJ is defined other than the control object OBJ, the switching display of the unit objects OBJ1 to OBJn by the control object OBJ can be realized.

  In the above configuration, the processing of the control object OBJ is defined in the control object setting file stored in the host computer 3, whereby the state-object correspondence list 104 a can be updated in the host computer 3. . Thereby, the state of the change element, that is, the state where the change element is in a specific range and the unit objects OBJ1 to OBJn can be easily updated.

  The setting of the control object OBJ is changed using an application program, for example, an image creation program (the aforementioned image creation software). For this reason, in the programmable display device 2 which is a dedicated machine and cannot execute the application program, the setting of the control object OBJ cannot be changed. Therefore, the host computer 3 can change the object setting if such image creation software is installed.

  Here, the change elements corresponding to the unit objects OBJ1 to OBJn will be described in detail. The change element is an element that causes some kind of change, and is an element that changes due to an internal or external factor, or an element that changes simply.

  Examples of the changing element include the following (1) to (8), and each of them must be able to be detected and recognized by the programmable display device 2. The state management list 101a includes the specific range for such a change element. For example, when the zoom level is used as the change element as the attribute of the object (1), the unit object OBJ1 is switched to the unit object OBJ2 when the zoom level, which is the degree of zooming of the image, increases until reaching a specific zoom level. In this case, the specific zoom level is included in the state management list 101a, and this specific zoom level is one end of the specific range.

(1) Object attributes These attributes include the position, size, display / non-display of the object, color, style, thickness, label, zoom level, and the like.

(2) Value acquired from external device Examples of this value include data of device 6 and a value acquired from I / O.

(3) System events Examples of system events include alarm issue / confirmation / recovery, logging execution, recipe execution / change, PLC5 communication error, application program execution / stop, storage error, occurrence of user specified event, etc. . The storage abnormality is an abnormality related to the memory card 8 and includes a reading / writing abnormality, a formatting abnormality, a non-installation, and a storage capacity shortage.

(4) Acquisition of information by external communication Acquisition of information by external communication includes database access and mail transmission / reception.

(5) Date and time information The date and time information is date, time, and time managed by the programmable display device 2.

  The elapsed time is, for example, the time when the time measurement is started when the ambient temperature of the device 6 exceeds a predetermined time.

(6) Touch operation Examples of the touch operation include operations such as tap, flick, and swipe.

(7) Image Display Form As the image display form, display forms corresponding to the vertical and horizontal orientations of the display unit 22, the number of image divisions, the size of the display panel in the display unit 22, and the like can be given. Moreover, the display form by the function (stack panel and dock panel) which adjusts the layout of the object currently used for the smart phone etc. dynamically may be sufficient.

  The stack panel is a technology for displaying each element of an image so as to be stacked in a specified direction. By using the stack panel, for example, when the orientation of a smartphone or the like is changed from vertical to horizontal, each image element displayed so as to be stacked vertically is converted to be stacked horizontally. In such display conversion, numbers are assigned to image elements in order from the top, and images are arranged in that order even if they change from portrait to landscape.

  The dock panel is a technique for docking a plurality of image elements. By using the dock panel, for example, display (for example, 2 × 2 division) that divides an image into a lattice shape becomes possible.

(8) Theme The theme is a display form of the object. For example, when the object is a switch, a rectangular switch is displayed by default, and when the theme is changed to a stereoscopic display theme, a stereoscopically displayed switch is displayed.

  The change elements corresponding to the unit objects OBJ1 to OBJn have been described in detail above, but the change elements may be any data or value that can be input to the programmable display 2, and are not limited to the above.

  Next, the display operation of the control object OBJ of the programmable display 2 configured as described above will be described.

  Here, a description will be given based on an example in which an image is zoomed and displayed with the zoom level as a changing element. For example, zoom levels of “0” to “10” are prepared, and the object OBJ1 is displayed in a state where the zoom level is in a specific range smaller than “5”. An example in which the display of the object OBJ2 is maintained when the display is switched from the object OBJ1 to the unit object OBJ2 and the zoom level exceeds “5” will be described. The zoom level “0” is no enlargement, and the zoom level “10” is the maximum enlargement.

  First, the registration request unit 102 requests the state monitoring unit 211 to register the zoom level as a change element. In the state monitoring unit 211, the registration receiving unit 211a instructs the first monitoring unit MTR1 responsible for monitoring the zoom level to register the zoom level. In response to this, the first monitoring unit MTR1 registers the zoom level and monitors the zoom level.

  In this state, for example, when an operation for enlarging (zooming in) the zoom level from “1” is performed on the displayed image, the first monitoring unit MTR1 confirms the change in the zoom level and checks the zoom level. Change (changed zoom level) is notified to the change determination unit 103.

  Upon receiving the changed zoom level, the change determination unit 103 compares the zoom level with the zoom level value (“5”) managed in the state management list 101a. When the change determination unit 103 determines that the zoom level has reached a specific value (“5”) or exceeds a specific value, that is, the change element is in a specific range, the specific range Is displayed to the display switching unit 105 as a state in which the change element is in the specific range.

  The display switching unit 105 refers to the state-object correspondence list 104a and selects a unit object OBJ2 to be switched based on the specific range notified from the change determination unit 103. The display switching unit 105 switches the unit object OBJ1 displayed on the image to the unit object OBJ2 and displays it.

  Next, a specific example in which an image is zoomed will be described. Here, the first example and the second example will be described.

  FIG. 3 is a diagram showing an image 301 representing the layout of the production line. FIG. 4 is a diagram illustrating a state in which a part of the image 301 displaying the alarm display component at the time of enlargement is enlarged. FIG. 5A is a diagram showing an image 401 representing the overall layout of the plant equipment, and FIG. 5B is a diagram showing an image 401 in which a part of the image 401 is enlarged and displayed. (C) is a figure which shows the image 401 which expanded and displayed a part of image 401 shown to (b).

  First, in the first example, as shown in FIG. 3, an image 301 including a production line layout is displayed on the programmable display 2. The production line included in the image 301 includes areas A1 to A4. In areas A1 to A3, devices M1 to M3 and control objects OBJA1 to OBJA3 are arranged as objects, respectively. The processed product W is an object of a processed product that is processed through the areas A1 to A3. In the area A4, the host computer H and the control object OBJA4 are arranged. The host computer H may correspond to the host computer 3 described above.

  Each of the control objects OBJA1 to OBJA3 includes a unit object for a signal lamp part and a unit object for an alarm display part.

  The signal lamp component is a display component that represents a signal lamp that displays the movable states of the devices M1 to M3 and the host computer H in red, yellow, and blue, respectively. Red represents the abnormal state of the devices M1 to M3 and the host computer H, yellow represents the standby state of the devices M1 to M3 and the host computer H, and green represents the operating state of the devices M1 to M3 and the host computer.

  The alarm display component acquires alarm data stored in the data memory 26, thereby displaying alarm information of the devices M1 to M3 and the host computer H, respectively. Examples of alarm information include an alarm issue date and time, an alarm level, and an alarm message.

  When the zoom level of the image 301 is not less than “0” and less than “5”, the control objects OBJA1 to OBJA4 determine that the zoom level has changed to a state within a specific range, and determine the signal light component (unit object OBJ1). indicate. Further, the control objects OBJA1 to OBJA4 determine that the azoom level has changed to another specific range when the zoom level of the image 301 is “5” or more, and display the alarm display component (units). Object OBJ2) is displayed.

  Further, the image 301 is provided with a zoom slider 302 for changing the zoom level at the right end. The zoom slider 302 has a zoom level “0” (no zoom) when the knob is positioned at the lower end, and a zoom level “10” (maximum zoom) when the knob is positioned at the upper end.

  That is, the state management list 101a and the state-object correspondence list 104a include at least “5” as a zoom level value. It should be noted that the display switching from the signal lamp component to the alarm display component does not need to be performed at the same zoom level in all OBJA1 to OBJA4, and may be different in each OBJA1 to OBJA4.

  In the state where the zoom slider 302 is at the lower end, the image 301 displays the entire manufacturing line as shown in FIG. Here, the control object OBJA2 in the area A2 displays a signal lamp component as the unit object OBJ1 in the state shown in FIG.

  In this state, when the area A2 is touched and the zoom slider 302 is operated from the lower end portion toward the upper end portion, the area A2 is enlarged. Designation of the enlarged portion may be performed by scrolling the entire image 301 and moving the area A2 to the center portion of the image 301 instead of the touch operation as described above. Further, the enlargement portion may be designated and the enlargement operation may be performed by a so-called pinch-out operation (an operation of pressing the screen with two fingers and moving the finger away).

  When the operation of the zoom slider 302 is continued and the zoom level (change element) of the image 301 changes, a change in the zoom level (changed zoom level) is sent from the state monitoring unit 211 to the change determination unit 103 of the control object OBJA2. Be notified. Further, when the change determination unit 103 determines that the zoom level after the change is less than the zoom level “5” to the zoom level “5” or more and maintains the state, the change determination unit 103 changes the display switching unit. 105 is notified that the zoom level is “5” or higher. Then, the display switching unit 105 selects an alarm display component corresponding to a specific range of the zoom level “5” or higher from the state-object correspondence list 104a.

  Thereby, as shown in FIG. 4, the control object OBJA2 switches the display from the signal lamp part (unit object OBJ1) to the alarm display part (unit object OBJ2).

  Thus, in the first example, when the control object OBJA2 is not magnified, the signal lamp component is displayed, and when the control object OBJA2 is magnified to a predetermined zoom level “5” or higher, the alarm lamp component is lit in red. The part of is displayed. Thereby, when the signal lamp component is lit red, it is possible to switch to the display of the alarm display component by enlarging the image 301. Therefore, it is possible to quickly grasp the alarm information for the abnormality of the device M2. The same applies to the control objects OBJA1, OBJA3, OBJA4 in the other areas A1, A3, A4.

  Next, in the second example, as shown in FIG. 5A, an image 401 including the entire layout of the plant equipment is displayed on the programmable display 2 with the zoom level (change element) being “0”. Has been. In this image 401, parts representing tanks and valves (tank parts and valve parts) are provided as control objects OBJ, and parts (pipe parts) representing pipes connecting the tanks and valves are also provided as control objects OBJ. .

  In the image 401 shown in FIG. 5A, when the area A11 is selected and the zoom level reaches “5” by an operation of a zoom slider or the like (not shown), as shown in FIG. In 401, the enlarged area A11 is switched and displayed. In this image 401, the tank and valve parts (unit object OBJ2) in the area A11 are closer to the actual tanks and valves than the parts (unit object OBJ1) in the image 401 of FIG. It is shown to have an appearance.

  Furthermore, in the image 401 shown in FIG. 5B, when the zoom level reaches “10” (maximum zoom) by selecting a tank part (“Tank X4” in the figure) and performing an enlargement operation, In the image 401, the tank parts are switched and displayed as shown in FIG. In this image 401, the tank part (unit object OBJ3) is shown to have an appearance closer to a real tank than the corresponding tank part (unit object OBJ2) in the image 401 of FIG. 5B. In addition, additional information such as temperature information is also displayed.

  As described above, in the second example, when the control object OBJ determines that the zoom level has changed to a state within a specific range corresponding to the unit objects OBJ1 to OBJ3, a display form is displayed according to each specific range. The unit objects OBJ1 to OBJ3 having different levels are switched. Thereby, the status of the plant equipment can be confirmed in stages such as the whole, a part, and a specific part.

  Subsequently, an example in which a change in work progress is displayed on an image using the work progress as a change element will be described.

  In the first example and the second example, the zoom level is used as a change element, and the example in which the display of the unit objects OBJ1 to OBJn is switched when the zoom level reaches a specific value has been described. Different variables may be used for the purpose. For example, “(2) value acquired from an external device” or “(3) system event” described above may be used as a change factor.

  In this case, in the first example, when the value acquired from the external device changes to a specific value, the control object OBJ switches the display from the signal lamp component to the alarm display component. Alternatively, in the first example, when an alarm (a specific state) occurs as a system event (change element), the control object OBJ may switch the display from the signal lamp component to the alarm display component.

  In the second example, when the value acquired from the external device changes to a specific value, the control object OBJ switches the display so that the unit object OBJi is enlarged. Alternatively, when an alarm is generated as a system event, the display may be switched so that the control object OBJ expands the unit object OBJi. For example, if the value acquired from the external device relates to an alarm for Tank X4, Tank X4 is displayed in an enlarged manner. That is, with a value acquired from the external device, a specific control object OBJ is selected and a unit object OBJi to which the control object OBJ should switch display is selected.

  FIGS. 6A to 6D are views showing an image 501 displaying the progress of work in the automobile manufacturing process.

  In this example, in the image 501, a part representing an automobile is provided as a control object OBJ. In addition, the control object OBJ has parts representing each state of work progress in the automobile manufacturing process as unit objects OBJ1 to OBJ4.

  First, as shown in FIG. 6A, a simplified appearance of a car is displayed on an image 501 representing a frame assembly process. The image 501 also indicates that the frame is located at the left end of the belt conveyor.

  Next, as shown in FIG. 6B, the image 501 representing the vehicle body assembly process displays the appearance of the vehicle body assembled to the frame. The image 501 also displays that the vehicle body is located slightly on the right side from the left end of the belt conveyor.

  Further, as shown in FIG. 6C, the display form of the window portion is displayed in an image 501 representing the door assembly process in a display form different from the vehicle body assembly process. The image 501 also displays that the vehicle body is located further to the right from the vehicle body assembly process.

  Finally, as shown in FIG. 6D, an image 501 representing the final process displays the appearance of the completed automobile. The image 501 also displays that the vehicle body is located at the right end.

  As described above, in the example representing the work progress status in the automobile production line, the progress rate increases as it moves to the right. Therefore, in the image 501, according to the change in the progress rate, the parts of the automobile (control object OBJ) Switch the display. The progress rate, that is, the range for specifying what unit object OBJi is displayed is based on the PLC5 data obtained in each process, the actual car position (coordinate position), the data of each process stored in the database, etc. Or a combination thereof.

  As described above, in the present embodiment, the programmable display device 2 includes the state monitoring unit 211 and the control object OBJ is provided in the image data. When the control object OBJ is notified of a change in a change element registered in advance as a result of monitoring by the state monitoring unit 211, the display switching unit 105 refers to the state-object correspondence list 104a and corresponds to the unit object corresponding to the state. OBJi is displayed.

  Thereby, the control object OBJ having a plurality of unit objects OBJ1 to OBJn can be handled as a single object. Therefore, each change element for switching the unit objects OBJ1 to OBJn, a range of the change element (a value specifying the range), and the unit objects OBJ1 to OBJn corresponding to the range are simply set as the control object OBJ. Dynamically changing images can be created. Therefore, the number of images for dynamically displaying images can be reduced, and the time required for creating images can be reduced.

  This can be paraphrased as follows. For example, when a plurality of signal lamp parts are arranged in a whole image, the display mode changes from a signal lamp part to an alarm display part according to the zoom level, and the zoom level at which each display mode changes differs, If there is, it is necessary to prepare a plurality of whole images for each zoom level at which the display mode changes. In contrast, in the present embodiment, this is not necessary, and a plurality of control objects OBJ may be arranged on the entire base image, and a zoom level for changing the display mode may be set for each control object OBJ.

  The control object OBJ causes the state monitoring unit 211 to register the change element in response to a request from the state management unit 101. Further, when the control object OBJ is notified as a result of monitoring by the state monitoring unit 211 that the change element has changed to a state registered in advance, the display switching unit 105 refers to the state-object correspondence list 104a. Then, the unit object OBJi corresponding to the range is switched.

  Thus, by registering the change elements that need to be monitored among the change elements managed by the state management unit 101, only the change elements can be monitored. In addition, since the state management unit 101 manages a specific range of change elements, when the specific range of change elements to be newly managed increases, various types of information including the specific range are added as management modules. For example, it is possible to switch objects based on a new type of change element (a specific range). The management module handles change elements, values of change elements for defining a specific range, and handling of multiple ranges determined by individual change elements when a range is defined by multiple change elements (AND processing, OR processing) Etc.

  Further, since the state management unit 101 only manages change elements (specific states), the function can be expanded by adding a management module without changing the overall structure. In addition, since the display switching unit 105 manages the object itself, even when a new object is supported, the function can be expanded only by adding the object. The object to be added is usually a unit object, but it is also possible to add a control object.

  On the other hand, in the conventional object switching method using a program, if a change element is added, it is necessary to modify the program and add / change the entire image data.

  Since the state monitoring unit 211 includes the registration reception unit 211a, the state management unit 101 simply requests registration of the state via the registration request unit 102, and the registration reception unit 211a is configured to receive the first to m-th monitoring units MTR1 to MTR1. Instructs MTRm to register. As a result, it is possible to accurately monitor the state by registering the state.

  It should be noted that the control object OBJ can have a function equivalent to that of the registration receiving unit 211a. However, since the data size of such a control object OBJ is large, it is preferable to provide a registration receiving unit 211a in the state monitoring unit 211.

  Since the setting of the change element is performed by the above-described image creation software, the change element and the range (value for specifying the range) can be added using the image creation software. However, in order to simplify the additional work by the user, the user may select a change element and a range prepared in advance. For example, when the zoom level is a change element, a zoom level range of small, medium, and large (three levels) and an object corresponding to each zoom level range are prepared, and the user can select any zoom level range. Make it selectable in the setting image. Alternatively, if the change element is relatively common and frequently used, the change element may be fixed so that the user cannot select it. In this way, it is possible to easily set the change element as compared to setting the change element with the conventional program.

  Here, matters that can be realized with respect to various change factors will be described in detail.

  When zooming (enlarging / reducing) an image, conventionally, an image of each pattern to be switched and displayed must be prepared, and an image connecting between the objects must also be prepared. In addition, in order to display an object in detail when the image is enlarged, it is necessary to consider how finely the image is created. In addition, it is necessary to prepare an image corresponding to each zoom level.

  On the other hand, by arranging the control object OBJ on an image having a zoom function, even if the entire image is displayed or a part of the image is displayed only by changing the zoom rate on the image. In other words, the object can be automatically switched when a specific zoom level is reached regardless of the display scale. Thus, it is sufficient to prepare one image for confirming the entire device (system) to the detailed portion without the user being aware of how much detail is displayed for each screen corresponding to the zoom level. As a result, the number of images to be prepared and the image creation time can be reduced. The zoom operation may be performed by an operation component provided on the image such as a zoom slider or a zoom button (+ -button), but may be performed by a click (tap) operation.

  When an object is enlarged and displayed, it may be specified by a touch operation, but the range may be changed using a scroll view (map software) of the zoom panel to display an enlarged portion.

  In this way, by combining the control object OBJ and the image having the zoom function, it is possible to express from the whole to the detailed portion with one image.

  When data is used as a change element, the unit object can be switched and displayed when the data reaches a specific value (state), that is, when the data becomes a specific type of data. For example, when recipe data is used as a change element, when the recipe data specified by the user is specific recipe data, it can be switched to a unit object representing a completed drawing of a product manufactured by the recipe data. Moreover, when the data in the database connected to the programmable display device 2 has a specific value, it can be switched to a unit object representing a diagram or the like related to the data and displayed.

  When any event is used as a change element, the unit object is switched and displayed when the event is in a specific state, that is, in a specific range. For example, when an event of a communication state between the programmable display 2 and the PLC 5 is used as a change element, a communication error is set to a specific state for switching unit objects. As a result, when a communication error occurs, it is possible to determine that a failure has occurred and to display a failure location or switch to a unit object that displays a recovery method.

  Hereinafter, an example of an operation system (programmable display 2) using a touch panel will be described. The object in the following description may be either a unit object or a control object, and if an object suitable for the application is used. Good. In this operation system, when an event of an operation on an object is used as a change element, the object can be switched and displayed when a specific operation (touch operation) is performed. For example, in the order system, if an image of a menu item is provided as an object, when the object is touched, the object displayed beside the object can be switched and displayed. For example, if such an object is set as an advertisement object related to a menu item, the object can be switched to the advertisement object in accordance with the display of the menu item.

  Furthermore, when the movable state of the apparatus is used as a change element, when the movable state is in a specific range, information related to the state can be displayed. For example, if a device failure is set as a specific range, when the device fails, it can be switched to an object representing the failed part and the failure recovery method. Alternatively, when the device fails, the failed part object can be switched to a picture object representing the failure state and displayed.

  When the position of the object is a change element, the object is switched and displayed when the position of the object moves to a specific position. For example, an object representing an image can be switched and displayed according to the position of a slider knob. For example, according to the position of the slider knob, a plurality of objects representing the degree of bread burning in the baking machine can be switched and displayed. Alternatively, it is used for adjusting the baking condition of bread. Depending on the position of the slider knob, a plurality of objects representing different images of balloons can be switched and displayed.

  When the touch operation is a change element, the object is switched and displayed for a specific touch operation performed on the touch panel 23. For example, when the programmable display 2 is equipped with a Web browser, normally, when a Web image is displayed as an object and a flick operation is performed on the Web image, an image of Internet history information (different object) Can be displayed. Furthermore, when a flick operation is performed, it is possible to switch to an Internet setting image (further different object) and display it.

  When a trend graph (object) is double-tapped, a graph with a different scale can be displayed as a different object. For example, it is usually possible to display a graph with a scale of 0 to 100 and switch to a graph with a scale of 0 to 50 by double tap.

  Note that when the display size is enlarged by double tap, simply increasing the display size makes the character too large and difficult to see. Therefore, an object that restricts the size of the character may be displayed. Even if the display size is increased, the size of the character is limited, so that a margin is generated accordingly, and a keyboard or the like for inputting characters can be displayed in the margin. Thereby, various images can be easily created.

  When the layout of the image is used as a change element, the object is switched and displayed when a specific layout is obtained. For example, when the image is divided into three areas, when the number of areas is switched to 2, the middle area can be displayed to be deleted. In this case, since each area becomes wide, the object displayed in each area can be switched. For example, it is possible to realize a display in which a signal lamp component is displayed in the case of a three-division display and an alarm display component is displayed in the case of a bi-division display.

  Here, if the width of each divided region is a change element, it may be determined that the object is switched when the width of the two-divided display is reached. Alternatively, if the division number of the region is a change factor, it may be determined that the object is switched when the division number becomes 2.

  When the date and time is a change element, the object is switched and displayed when a specific date and time are reached. For example, it is possible to switch and display an object representing an image of how bread is baked in a bread maker, or to switch and display an object representing an image of a consumable part being deteriorated at a predetermined time. . In addition, an object representing the image of the zodiac can be switched and displayed according to the year. Further, an object representing the weather can be switched and displayed based on the weather information acquired from the Internet. Furthermore, it is possible to display an object representing an image reflecting luminance according to time.

  When the image display form is a change element, the object is switched and displayed when a specific display form is obtained. For example, in the case of the above-mentioned stack panel, when the display unit 22 is in the landscape orientation and the display space cannot be secured, the signal lamp part object is displayed, and when the display unit 22 is in the portrait orientation and the display space can be secured, the alarm display component is Switching to display is possible.

  Further, in the case of the above-described dock panel, when an image displayed on the display unit 22 having a screen size of 320 × 240 is displayed on the display unit 22 having a screen size of 800 × 600, each block (rectangular region) becomes large. . Therefore, using the size of each block as a change element, when the size reaches a specific size, the object is switched and displayed. As a result, when the screen size is small, the signal lamp component object can be displayed and switched to the alarm display component object when the screen size increases. As described above, the object to be displayed is switched between the case where the same image is displayed on the small programmable display 2 and the case where the same image is displayed on the large programmable display 2. Thereby, a display suitable for the screen size can be performed.

  In the above case, the size of each block is used as the changing element, but the height of each block may be used as the changing element. Thus, the object is switched and displayed when the size of the area where the control object OBJ is arranged reaches a specific height. At this time, the state monitoring unit 211 makes an inquiry to the dock panel, and the dock panel returns the height of each block based on the screen size. If the height is greater than or equal to a predetermined value, the state monitoring unit 211 notifies the control object OBJ of that fact.

  Alternatively, when the controlled object OBJ is arranged in a single image without dividing the image as in the dock panel, the displayable area becomes large when the image is displayed on the display unit 22 having a large screen size. The display of the object may be switched.

  Incidentally, the control object OBJ is usually provided by being packaged in image creation software, but may be provided on the Internet. Thereby, for example, the control object OBJ can be used by downloading from a provider such as an application store. Also, since only the control object OBJ is provided independently of the image creation software, the latest control object OBJ can be obtained without waiting for the release of the latest version of the image creation software.

  As described above, the specific range in this specification may be determined by a value such as temperature, or may be determined by the type of data, the type of operation, the display mode, or the state of the device. In addition, all of the events that can be detected and sensed by the programmable display 2 and all of the events that can be set in the programmable display 2 can be variable elements that specify the range. That is, the range may have a predetermined width or may be a single value, and is determined by, for example, a specific value, one of a certain kind of data, or a specific operation.

  The present invention is not limited to the above-described embodiments, and various modifications can be made within the scope shown in the claims. For example, part or all of the control object OBJ is in the host computer 3, and the programmable display 2 can perform only display. That is, embodiments obtained by combining technical means appropriately modified within the scope of the claims are also included in the technical scope of the present invention.

  INDUSTRIAL APPLICABILITY The present invention can be suitably used for applications that dynamically switch between enlarged display or reduced display of an object of an image.

DESCRIPTION OF SYMBOLS 1 Control system 2 Programmable display 4 Network 3 Host computer 5 PLC (external device)
21 Control unit 27 User memory (storage means)
101 state management unit 101a state management list 102 registration request unit 103 change determination unit 104 state-object management unit 104a state-object correspondence list 105 display switching unit 211 state monitoring unit (state monitoring unit)
211a Registration reception unit 301 Image 401 Image 501 Image MTR1 to MTRm First to m-th monitoring unit (individual monitoring unit)
OBJ Control objects OBJ1 to OBJn Unit objects

Claims (5)

A host computer;
A programmable display communicatively connected to the host computer,
The programmable display is
Storage means for storing image data including a plurality of unit objects having unique functions and a control object that controls the unit objects;
State monitoring means for monitoring changes in pre-registered change elements,
The control object is
When it is determined that the change element has changed to a state within a specific range, the displayed unit object is set to a state within the specific range by the object switching unit provided in the control object or the host computer. A control system that switches to and displays the corresponding unit object. The object switching unit
A state management unit that manages the specific range of the change element registered in the state monitoring unit as the state;
A state-object management unit that manages a correspondence between the state in the specific range of the change element and the unit object;
With reference to the correspondence between the state in the specific range managed by the state-object management unit and the unit object, the display is switched to the unit object corresponding to the state,
The state management unit updates the specific range managed in response to the update of the correspondence between the state in the specific range managed by the state-object management unit and the unit object. The control system according to claim 1, wherein The state monitoring means includes
A plurality of individual monitoring units corresponding to the change elements so as to monitor changes of the change elements;
A registration receiving unit that determines the individual monitoring unit to register the change element in response to a request for registration of the change element;
The control system according to claim 1, wherein the individual monitoring unit directly notifies the object switching unit that the change element has changed.   The control system according to any one of claims 1 to 3, wherein the change element is a zoom level that is a degree of zooming of an image displayed based on the image data.   The control system according to any one of claims 1 to 3, wherein the change element is data acquired from an external device.

Images