JP2013045425A - Display device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a display device which enables a user to dispense with display screen creation.SOLUTION: A memory 13 prestores a plurality of pieces of screen configuration information set in association with each of a plurality of types of external apparatus 2 that can connect with an apparatus interface 11. When an external apparatus 2 is connected with the apparatus interface 11, a display control unit 141 reads out screen configuration information corresponding to the connected external apparatus 2 from the memory 13, and controls a display unit 121 by applying the screen configuration information. Thus, the display control unit 141 performs screen display according to the screen configuration information corresponding to the external apparatus 2 actually connected to the apparatus interface 11 among the plurality of screen configuration information prestored in the memory 13 as preset data.

Description

  The present invention relates to a display device used by connecting an external device.

  Conventionally, in a control system using, for example, a programmable controller (hereinafter referred to as “PLC”), a programmable display as a display device has been used to control various output devices (such as a solenoid valve and a motor). This type of display device acquires the state of an external device (output device or PLC) and displays it on a display unit (display), and transmits a control instruction from an operator to the external device by means such as a touch panel ( For example, see Patent Document 1).

  The display device (display device) described in Patent Literature 1 is configured to be operable in an operation mode including a normal mode and a customization mode in which the display screen of the display unit can be changed on the touch panel. Thereby, the user can change the display screen of the display device by the display device itself.

JP 2007-226521 A

  By the way, in the display device as described above, the user can freely create a display screen according to the external device to be connected. However, depending on the user, the work of creating the display screen may be troublesome. That is, for example, when an external device that can be controlled only by setting some parameters, such as an inverter, a temperature controller, and a power monitoring device, is connected to the display device, the user can simply set the parameters. If possible, it is enough. If it is necessary to create a display screen up to such a case, some users may find it difficult to create the display screen.

  The present invention has been made in view of the above-described reasons, and an object thereof is to provide a display device that can save the user from creating a display screen.

  The display device of the present invention includes a device interface for connecting an external device, a display unit for displaying information, an operation unit for receiving an operation input from a user, the display unit according to different screen configuration information depending on the type of the external device, and A control unit that controls the operation unit to display an operation state of the external device and information for operating the external device on the display unit, and controls the external device according to an operation of the operation unit; And a memory that stores in advance a plurality of the screen configuration information set in association with each of a plurality of types of external devices connectable to the device interface, and the control unit includes the device interface The display unit and the operation unit are controlled by applying the screen configuration information selected from the memory corresponding to the external device connected to the computer. The features.

  In this display device, the memory is preferably an internal memory built in the device main body.

  In this display device, it is more preferable that the device main body includes a memory writing unit that writes the screen configuration information created by the screen creation tool into the memory.

  In this display device, it is more preferable that the memory is an external memory that can be attached to and detached from the device main body.

  In this display device, the device main body includes a device identification unit that identifies the type of the external device connected to the device interface from the plurality of types of external devices connectable to the device interface. When the external device is connected to the device interface, the control unit identifies the external device connected to the device interface based on the identification result in the device identification unit, and the screen corresponding to the external device It is more desirable to automatically read configuration information.

  In this display device, when the external device is connected to the device interface, the control unit displays a candidate list screen representing a list of the plurality of types of external devices connectable to the device interface on the display unit. The external device connected to the device interface is identified in accordance with an operation received by the operation unit in a state where the candidate list screen is displayed, and the screen configuration information corresponding to the external device is read. desirable.

  In this display device, when the external device whose corresponding screen configuration information is not stored in the memory is connected to the device interface, the control unit acquires the screen configuration information acquired from the external device via the device interface. It is more desirable to control the display unit and the operation unit by applying.

  In this display device, when the external device whose corresponding screen configuration information is not stored in the memory is connected to the device interface, the control unit previously stores data acquired from the external device via the device interface. It is more desirable to display on the display unit using a predetermined dedicated protocol.

  In this display device, the device main body has a network communication unit connected to a network, and the control unit is connected to the device interface for the external device in which corresponding screen configuration information is not stored in the memory. In this case, it is more desirable to obtain screen configuration information corresponding to the external device from the server on the network via the network communication unit, and apply the screen configuration information to control the display unit and the operation unit. .

  In this display device, the device interface can connect a plurality of the external devices at the same time, and the control unit displays on the display unit from among the plurality of external devices connected to the device interface. The external device as a target is alternatively selected, the screen configuration information corresponding to the external device as the display target is read from the memory, and the display unit and the operation unit are applied by applying the screen configuration information It is more desirable to control.

  In this display device, the control unit displays on the display unit a selection screen that allows one external device to be selected from among the plurality of external devices connected to the device interface. More preferably, the external device to be displayed is selected according to an operation received by the operation unit in a state where is displayed.

  According to the present invention, a control unit applies a screen configuration information selected from a memory corresponding to an external device connected to a device interface to control a display unit and an operation unit, so that a user creates a display screen. There is an advantage that labor can be saved.

1 is a schematic diagram illustrating a configuration of a system including a display device according to Embodiment 1. FIG. 6 is a diagram illustrating a display example of a display unit of the display device according to Embodiment 1. FIG. FIG. 5 is an explanatory diagram illustrating an operation of the display device according to the first embodiment. 6 is a diagram illustrating a display example of a candidate list screen of the display device according to the first embodiment. FIG. It is the schematic which shows the structure of the system containing the display apparatus which concerns on Embodiment 2. FIG. 10 is a diagram illustrating a display example of a selection screen of a display device according to Embodiment 2. FIG.

  In the following embodiments, an inverter for driving an induction motor, a temperature controller (temperature controller) for driving a heater, and a programmable display capable of connecting devices such as various sensors as external devices are examples of display devices. However, the display device is not limited to a programmable display.

(Embodiment 1)
As shown in FIG. 1, the display device 1 of the present embodiment has a device interface 11 for connecting an external device 2 and a touch panel display 12 for displaying various types of information and accepting operations by a user. doing.

  The touch panel display 12 includes a display unit 121 that includes a liquid crystal display and displays information, and an operation unit (touch switch) 122 that includes a transparent sheet stacked on the surface of the display unit 121 and receives an operation input from a user. doing. The touch panel display 12 corresponds to each icon when an area corresponding to each icon in the operation unit 122 is touched by the user in a state where icons (icons) such as numeric keys and operation buttons are displayed on the display unit 121. Output the operation signal. That is, the touch panel display 12 functions as a pseudo switch that uses each icon displayed on the display unit 121 as an operator.

  Furthermore, the display device 1 according to the present embodiment includes a memory 13, a control unit 14 that controls each unit, a tool communication unit 15 that can be connected to a dedicated screen creation tool 3, and a network communication unit that can be connected to the network 4. 16 in the apparatus main body 10. Here, the control unit 14 has a CPU (Central Processing Unit) as a main component, and controls the entire display device 1 according to a program in the memory 13.

  The control unit 14 includes a display control unit 141 that controls display contents of the display unit 121, an input monitoring unit 142 that acquires an operation signal from the operation unit 122, a device control unit 143 that controls the external device 2, A memory writing unit 144 and a device identification unit 145 described later are included.

  The display control unit 141 displays the operation state of the external device 2 acquired from the external device 2 via the device interface 11 and information for operating the external device 2 including images such as numeric keys and operation buttons on the touch panel display 12. Displayed on the display unit 121. For example, when the external device 2 is an inverter, the display control unit 141 includes information indicating an operation state such as a set frequency and an operation mode (forward rotation, reverse rotation), information for an operation for switching the set frequency and the operation mode, and a display unit. 121 is displayed. Here, the display control unit 141 displays these pieces of information on the display unit 121 in accordance with the screen configuration information stored in the memory 13, which will be described in detail later.

  The input monitoring unit 142 acquires an operation signal corresponding to a user operation from the operation unit 122 of the touch panel display 12. At this time, the input monitoring unit 142 specifies not only whether or not the operation unit 122 is touched but also which region of the operation unit 122 is touched from the operation signal.

  The device control unit 143 controls the external device 2 by outputting a control signal to the external device 2 via the device interface 11 in accordance with the operation signal acquired from the operation unit 122 by the input monitoring unit 142. When the information for operating the external device 2 such as a numeric keypad and operation buttons is displayed on the display unit 121 as a graphic image, the device control unit 143 touches an area corresponding to each graphic image in the operation unit 122. Control of the external device 2 assigned to each image is executed.

  In short, the control unit 14 controls the display unit 121 and the control unit 122 according to the screen configuration information, displays the operation state of the external device 2 and information for operating the external device 2 on the display unit 121, and The external device 2 is controlled in accordance with the operation 122. In other words, each information displayed on the display unit 121 is assigned a function for monitoring / operating the external device 2, and when the information (image) to which the operation function is assigned is touched, the control unit 14 controls the external device 2 according to this function. Therefore, the user can perform both the monitoring of the operating state of the external device 2 and the operation of the external device 2 using the display device 1.

  By the way, in this embodiment, the display device 1 is configured to be able to connect a plurality of types of external devices 2 to the device interface 11 so as to support not only one type of external device 2 but also a plurality of types of external devices 2. ing. That is, the device interface 11 corresponds to at least two types of external devices 2 such as an inverter, a temperature controller, and various sensors.

  The memory 13 stores in advance a plurality of pieces of screen configuration information set in association with each of a plurality of types of external devices 2 that can be connected to the device interface 11. In short, the screen configuration information used when the control unit 14 controls the display unit 121 and the control unit 122 is different for each type of the external device 2, and the memory 13 has a screen configuration corresponding to various external devices 2. Information is stored in advance.

  The screen configuration information referred to here includes not only the operation state of the external device 2 and the arrangement (layout) of information for operating the external device 2 on the screen, the presence / absence of display of each information, and the form of a graphic representing each information It is data including. Further, the screen configuration information is displayed by assigning functions to information for operating the external device 2 or by displaying the operating state acquired from the external device 2 (for example, whether it is displayed as it is or after performing statistical processing. It also includes information that determines whether or not. Here, among the external devices 2 that can be connected to the device interface 11, a screen configuration corresponding to the external device 2 that can be controlled only by setting some parameters, such as at least an inverter, a temperature controller, and a power monitoring device. Information is stored in advance as preset data.

  In the present embodiment, the memory 13 is composed of a built-in memory built in the apparatus main body 10, and screen configuration information is written by the memory writing unit 144. The memory writing unit 144 acquires the screen configuration information created by the dedicated screen creation tool 3 via the tool communication unit 15 and writes it in the memory 13. The creation of screen configuration information using the screen creation tool 3 is performed by a maintenance contractor who performs various settings of the display device 1, and the user of the display device 1 has already stored a plurality of screen configuration information in the memory 13 as preset data. The display device 1 in the state of being used is used. Note that the memory writing unit 144 may be provided separately from the control unit 14.

  Therefore, the user of the display device 1 does not need to create screen configuration information, and can use the display device 1 immediately after the display device 1 is installed (after the system is constructed as shown in FIG. 1). Become. However, when the user uses the display device 1 by connecting an external device 2 that does not have corresponding preset data, or desires to apply screen configuration information different from the preset data, the user himself / herself uses the screen creation tool 3. Screen configuration information may be created and written to the memory 13. The screen creation tool 3 is realized by executing a predetermined program on a personal computer (personal computer).

  The memory for storing the screen configuration information is not limited to the built-in memory, and may be an external memory 17 (see FIG. 1) that can be attached to and detached from the apparatus main body 10 such as a memory card. In this case, the image creation tool 3 can register the preset data (screen configuration information) without being connected to the display device 1 by directly writing the created screen configuration information as preset data in the external memory 17. . Therefore, even after the display device 1 is installed, the user can easily update the screen configuration information stored as preset data by exchanging the external memory 17 together.

  Here, when the external device 2 is connected to the device interface 11, the control unit 14 reads screen configuration information corresponding to the connected external device 2 from the memory 13, and applies the screen configuration information to the display unit 121. And the operation unit 122 is controlled. That is, the control unit 14 selects screen configuration information corresponding to the external device 2 that is actually connected to the device interface 11 from among a plurality of screen configuration information stored in advance in the memory 13 as preset data. Operates according to configuration information.

  For example, when an inverter is connected to the device interface 11 as the external device 2, the display control unit 141 displays information according to the screen configuration information corresponding to the external device (inverter) 2, as shown in FIG. Will be displayed. In this case, the input monitoring unit 142 and the device control unit 143 control the external device 2 according to the operation of the operation unit 122 according to the screen configuration information corresponding to the external device (inverter) 2. FIG. 2 shows an example of the display screen of the display unit 121 when an inverter is connected as the external device 2, and another example is shown in (b).

  The display screen shown in FIG. 2A includes the operating state of the external device 2 and information for operating the external device 2. That is, in FIG. 2A, the display 51 represents the set frequency, the display 52 represents the operation mode, the display 53 represents the presence / absence of an alarm, and the image 54 of the operation button and the image 55 of the rotary knob are used for the operation of the external device 2. . The display screen shown in FIG. 2B represents the operating state of the external device 2 using letters and numbers.

  Further, in the present embodiment, the display device 1 has a function of specifying the external device 2 connected to the device interface 11 and automatically selecting (reading) the screen configuration information corresponding to the external device 2 by the control unit 14. have. That is, the apparatus main body 10 automatically identifies the type of the external device 2 that is actually connected to the device interface 11 from among a plurality of types of external devices 2 that can be connected to the device interface 11. To do. When the external device 2 is connected to the device interface 11, the control unit 14 specifies the external device 2 connected to the device interface 11 based on the identification result in the device identification unit 145, and corresponds to the external device 2. Read screen configuration information automatically.

  More specifically, the device identification unit 145 sequentially transmits a plurality of types of communication commands to the external device 2 via the device interface 11 when the external device 2 is connected to the device interface 11. The communication command here is a command (model code) that matches the type of the external device 2, and the external device 2 returns a response to the device identification unit 145 only when it receives a communication command that suits itself. The device identification unit 145 monitors the presence / absence of a response from the external device 2 and identifies the type of the external device 2 based on the result. The device identification unit 145 may be provided separately from the control unit 14.

  Next, the operation when the display device 1 specifies the external device 2 connected to the device interface 11 and automatically reads the screen configuration information and performs screen display or the like will be briefly described with reference to FIG. To do.

  First, the display device 1 starts transmission of a communication command from the device identification unit 145 to the external device 2 triggered by the connection of the external device 2 to the device interface 11 (S1 in FIG. 3). At this time, the device identification unit 145 monitors the presence / absence of a response from the external device 2 (S2), and if there is no response (S2: No), sets a communication command for another external device 2 (S3). The communication command is transmitted again to the external device 2 (S1).

  On the other hand, when there is a response from the external device 2 (S2: Yes), the device identification unit 145 specifies the type of the external device 2 connected to the device interface 11 from the communication command sent immediately before. Then, the display device 1 automatically reads out the screen configuration information corresponding to the specified external device 2 from the memory 13 by the control unit 14 (S4), and performs screen display or the like by applying this screen configuration information ( S5).

  Further, the display device 1 according to the present embodiment can operate even when an external device 2 whose corresponding screen configuration information is not stored in the memory 13 is connected to the device interface 11, for example, as described below. The configuration is adopted.

  As a first configuration, the control unit 14 acquires screen configuration information from the external device 2 via the device interface 11 and controls the display unit 121 and the control unit 122 by applying the acquired screen configuration information. That is, the display device 1 operates by directly acquiring screen configuration information from the external device 2 when the external device 2 whose corresponding screen configuration information is not stored in the memory 13 is connected to the device interface 11. In this case, the display device 1 uses the screen configuration information acquired from the external device 2 by the control unit 14 in association with the external device 2 in the memory 13 by the memory writing unit 144 and then used for the control unit 14. Alternatively, it may be applied directly to the control unit 14 without being written in the memory 13.

  In this case, the screen configuration information held by the external device 2 is created by, for example, the screen creation tool 3 and written in the memory of the external device 2. In short, the screen configuration information created by the maintenance company using the screen creation tool 3 is temporarily held in the external device 2 and transferred from the external device 2 to the display device 1 so that it can be used in the display device 1.

  As a second configuration, the control unit 14 displays data acquired from the external device 2 via the device interface 11 on the display unit 121 using a predetermined dedicated protocol. The dedicated protocol here is determined in advance between the external device 2 and the display device 1, and the control unit 14 performs screen display without using specific screen configuration information. In this case, the display device 1 may use the data acquired from the external device 2 by the control unit 14 in association with the external device 2 and written in the memory 13 by the memory writing unit 144 for display. You may use for a direct display, without writing in the memory 13. FIG.

  As a third configuration, the control unit 14 acquires screen configuration information corresponding to the external device 2 from a server on the network 4 via the network communication unit 16, and applies the acquired screen configuration information to the display unit 121 and The controller 122 is controlled. In the example of FIG. 1, the host computer 6 on the network 4 such as the Internet functions as a server, and the control unit 14 acquires necessary screen configuration information from the host computer 6. In this case, the display device 1 may use the screen configuration information acquired from the host computer 6 by the control unit 14 in the memory 13 by the memory writing unit 144 and then use the screen configuration information in the memory 13. Instead, it may be applied directly to the control unit 14. Here, the network communication unit 16 is connected to the host computer 6 via the gateway 7 via Ethernet (registered trademark), and the address of the host computer 6 may be registered in the memory 13 in advance or input by the user. May be.

  By adopting any one of the above three configurations, the display device 1 can operate even when an external device 2 whose corresponding screen configuration information is not stored in the memory 13 is connected to the device interface 11. It becomes. Thereby, even when the preset data stored in the memory 13 is old, the display device 1 can obtain the latest screen configuration information from the external device 2, the screen creation tool 3, and the host computer 6. Display and operation corresponding to the device 2 are possible. Therefore, there is an advantage that the user of the display device 1 can save the trouble of updating the data stored in the memory 13.

  Note that the display device 1 of this embodiment forms a device control system together with the external device 2, the screen creation tool 3, and the host computer 6.

  According to the configuration of the present embodiment described above, when the external device 2 is connected to the device interface 11, the control unit 14 reads the screen configuration information corresponding to the external device 2 from the memory 13, and this screen configuration information. Can be applied to control the display unit 121 and the operation unit 122. Therefore, the user of the display device 1 does not need to create a display screen (screen configuration information) for the external device 2 in which the corresponding screen configuration information is stored in the memory 13 as preset data. The display device 1 can be used immediately. That is, when the external device 2 that can be controlled only by setting at least some parameters is connected to the display device 1, the display device 1 can save the user from creating a display screen. There is.

  In the present embodiment, the memory 13 in which the screen configuration information is stored is a built-in memory built in the apparatus main body 10, and therefore the memory interface for reading data from the external memory in the apparatus main body 10 may be omitted. Is possible. Furthermore, since the apparatus main body 10 has a memory writing unit 144 that writes the screen configuration information created by the screen creation tool 3 to the memory 13, the user can change or add screen configuration information in the memory 13 as necessary. It can be performed.

  Furthermore, in the display device 1 of this embodiment, the connected external device 2 is identified by the device identification unit 145, and the screen configuration information corresponding to the external device 2 is automatically read out and used. Therefore, it is not necessary for the user to select screen configuration information. That is, when the external device 2 is connected, the display device 1 automatically reads out the screen configuration information corresponding to the external device 2 from the memory 13 and applies it to the control unit 14. There is an advantage that it does not take time to select the device 2. Therefore, for example, even when the name of the external device 2 registered in the memory 13 is different from the name of the external device 2 recognized by the user, the screen configuration information corresponding to the external device 2 is surely applied. It will be.

  By the way, the display device 1 is not limited to the configuration in which the device identification unit 145 automatically identifies the external device 2 connected to the device interface 11 as described above, but manually detects the external device 2 connected to the device interface 11. A selectable configuration may be used. In this case, the control unit 14 does not automatically read out the screen configuration information just by connecting the external device 2 to the device interface 11, but has the user manually select the external device 2 to display the screen configuration. Information is read out.

  That is, when the external device 2 is connected to the device interface 11, the display control unit 141 represents a list of names of a plurality of types of external devices 2 that can be connected to the device interface 11, as shown in FIG. The candidate list screen 8 is displayed on the display unit 121. The control unit 14 specifies the external device 2 connected to the device interface 11 according to the operation received by the operation unit 122 in a state where the candidate list screen 8 is displayed, and corresponds to the external device 2. Read screen configuration information.

  In the example of FIG. 4, the candidate list screen 8 includes an item 81 “inverter A”, an item 82 “inverter B”, an item 83 “temperature controller X”, an item 84 “temperature controller Y”, and an item 85. "Sensor W" is displayed as the connectable external device 2. In this example, when the input monitoring unit 142 detects that the item 82 of “inverter B” in the candidate list screen 8 is touched, the control unit 14 determines that “inverter B” is connected to the device interface 11. to decide. Thereby, the control unit 14 reads the screen configuration information corresponding to the “inverter B” from the memory 13 and controls the display unit 121 and the operation unit 122 by applying the screen configuration information.

  In the configuration in which the user can manually select the external device 2 connected in this way, the display device 1 supports the external device 2 even if the external device 2 does not support the identification in the device identification unit 145. The screen configuration information to be applied can be applied to the control unit 14.

(Embodiment 2)
As shown in FIG. 5, the display device 1 of the present embodiment is different from the display device 1 of the first embodiment in that the device interface 11 can connect a plurality of external devices 2 simultaneously. Hereinafter, the same configurations as those of the first embodiment are denoted by common reference numerals, and description thereof will be omitted as appropriate.

  In the example of FIG. 5, the device interface 11 includes an external device 21 composed of an inverter, an external device 22 composed of a temperature controller, and an external device 2N composed of a power monitoring device (hereinafter collectively referred to as “external device 2” when not distinguished from each other). Connected). However, the number of external devices 2 to be connected can be freely changed as long as the device interface 11 is within the range up to the maximum number of connected devices (for example, 31).

  The control unit 14 selectively selects the external device 2 to be displayed on the display unit 121 from the plurality of external devices 2 connected to the device interface 11, and sets the external device 2 as the display target. The display unit 121 and the operation unit 122 are controlled by applying the corresponding screen configuration information. That is, the display device 1 displays information for each of the plurality of external devices 2 connected to the device interface 11 while switching the external devices 2 to be displayed. Therefore, the control unit 14 corresponds to the external device 2 that is the display target every time the display target is changed so that screen display or the like is performed with the screen configuration information corresponding to the external device 2 currently selected as the display target. Screen configuration information is read from the memory 13.

  Here, the control unit 14 displays the selection screen 9 illustrated in FIG. 6 on the display unit 121, and selects the external device 2 to be displayed according to the operation received by the operation unit 122 in this state. . In FIG. 6, an example of the selection screen 9 is shown in (a), and another example is shown in (b).

  A selection screen 9 shown in FIG. 6A is a screen for designating a machine number assigned to each external device 2 connected to the device interface 11. The machine number “No. 1” is assigned to the external device 21, the machine number “No. 2” is assigned to the external device 22, and the machine number “No. N” is assigned to the external device 2N. Assume that 6A includes an image 91 of a numeric keypad for inputting a machine number, an image 92 of an operation button for canceling / deciding the machine number, and a display 93 of the entered machine number. In this example, for example, when “No. 1” is designated as the machine number, the control unit 14 targets the external device 21 and applies the screen configuration information corresponding to the external device 21 to operate the display unit 121 and the operation. The unit 122 is controlled.

  A selection screen 9 shown in FIG. 6B is a screen representing a list of names of a plurality of external devices 2 connected to the device interface 11. In the example of FIG. 6B, the selection screen 9 displays “inverter” in item 94, “temperature controller” in item 95, and “power monitor” in item 96 as the connected external device 2. In this example, for example, when the input monitoring unit 142 detects that the “temperature controller” item 95 on the selection screen 9 has been touched, the control unit 14 sets the external device 22 as a display target and corresponds to the external device 22. The screen configuration information is applied to control the display unit 121 and the operation unit 122.

  The display control unit 141 displays the selection screen 9 as described above on the display unit 121 when the display device 1 is turned on and when a predetermined operation is performed on the operation unit 122. The machine number and name of the external device 2 may be registered manually by the user, or may be automatically registered by the device identification unit 145 acquiring it from the external device 2 through communication with the external device 2. Also good.

  According to the configuration of the present embodiment described above, the control unit 14 selectively selects the external device 2 to be displayed even when a plurality of external devices 2 are connected to the device interface 11 at the same time. The screen configuration information corresponding to the external device 2 can be applied. In addition, the control unit 14 displays a selection screen 9 on the display unit 121 for selecting one external device 2 from the plurality of external devices 2 connected to the device interface 11, and in this state, the operation unit The external device 2 to be displayed is selected according to the operation received by 122. Therefore, the user can arbitrarily select the external device 2 to be displayed on the selection screen 9. Furthermore, as illustrated in FIG. 6B, when the selection screen 9 represents a list of names of the external devices 2, the user does not know the unit number assigned to each external device 2. Also, there is an advantage that the external device 2 to be displayed can be easily selected.

  Other configurations and functions are the same as those of the first embodiment.

DESCRIPTION OF SYMBOLS 1 Display apparatus 2 External apparatus 3 Screen creation tool 4 Network 10 Apparatus main body 11 Apparatus interface 13 Memory 14 Control part 16 Network communication part 17 External memory 121 Display part 122 Operation part 141 Display control part 145 Equipment identification part

Claims (11)

A device interface for connecting an external device, a display unit for displaying information, an operation unit for receiving an operation input from a user, and controlling the display unit and the operation unit according to different screen configuration information depending on the type of the external device. An apparatus main body having an operation state of the external device and information for operating the external device on the display unit, and a control unit that controls the external device according to the operation of the operation unit;
A memory that stores in advance a plurality of the screen configuration information set in association with each of a plurality of types of external devices connectable to the device interface;
The control unit controls the display unit and the operation unit by applying the screen configuration information selected from the memory corresponding to the external device connected to the device interface. apparatus.   The display device according to claim 1, wherein the memory includes an internal memory built in the device main body.   The display device according to claim 2, wherein the device main body includes a memory writing unit that writes the screen configuration information created by a screen creation tool into the memory.   The display device according to claim 1, wherein the memory includes an external memory that is detachable from the apparatus main body. The apparatus main body includes a device identification unit that identifies the type of the external device connected to the device interface from the plurality of types of external devices connectable to the device interface.
When the external device is connected to the device interface, the control unit identifies the external device connected to the device interface based on the identification result in the device identification unit, and corresponds to the external device 5. The display device according to claim 1, wherein the screen configuration information is automatically read out.   When the external device is connected to the device interface, the control unit displays a candidate list screen representing a list of the plurality of types of external devices connectable to the device interface on the display unit, and the candidate list screen The screen configuration information corresponding to the external device is read out by specifying the external device connected to the device interface according to an operation received by the operation unit in a state where is displayed. The display device according to any one of claims 4 to 4.   The control unit applies the screen configuration information acquired from the external device via the device interface when the external device whose corresponding screen configuration information is not stored in the memory is connected to the device interface. The display device according to any one of claims 1 to 6, wherein the display unit and the operation unit are controlled.   The control unit, when the external device whose corresponding screen configuration information is not stored in the memory is connected to the device interface, the data acquired from the external device via the device interface is predetermined. 7. The display device according to claim 1, wherein the display unit displays the information on the display unit according to a protocol. The apparatus body has a network communication unit connected to a network,
When the external device whose corresponding screen configuration information is not stored in the memory is connected to the device interface, the control unit transmits the screen configuration information corresponding to the external device from the server on the network to the network communication. The display device according to claim 1, wherein the display device is acquired via a unit, and the display unit and the operation unit are controlled by applying the screen configuration information. The device interface can connect a plurality of the external devices simultaneously,
The control unit selectively selects the external device to be displayed on the display unit from the plurality of external devices connected to the device interface, and the external device as the display target 10. The screen configuration information corresponding to an item is read from the memory, and the screen configuration information is applied to control the display unit and the operation unit. Display device. The control unit displays on the display unit a selection screen for selecting one external device from the plurality of external devices connected to the device interface, and the selection screen is displayed. The display device according to claim 10, wherein the external device to be displayed is selected according to an operation received by the operation unit.

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