HK1226829B - Programmable display and control method - Google Patents

Description

Programmable display and control method

Technical Field

The present invention relates to a programmable display for controlling a device.

Background Art

A programmable display comprises at least: a display unit for displaying images, an input unit for touch input, an interface for communicating with a controller such as a programmable logic controller (PLC), and a control unit for controlling the above-mentioned units. The above-mentioned programmable display is an operational display having the function of displaying the operating status of the controller on the image displayed on the display unit and receiving operation input for giving control instructions relative to the controller from the input unit on the display unit. Generally, a programmable display has a graphic display function, so it is possible to display an operation panel, switches, display lights, etc. on a pre-prepared image, thereby playing the role of an operation terminal of the control system. In the control system, the display of the operating status of each controller, etc. and the control instructions to the controller are performed through a programmable display arranged near the controller.

The programmable display also stores various data generated internally and externally. The controller and programmable display generate data (input data, report data) as a result of control actions. Furthermore, external memory stores control data (method data) for the controller, which is accessed by the programmable display as needed.

Prior art literature

Patent Literature

Patent Document 1: Japanese Patent Application Publication No. 2010-278941 (published on December 9, 2010)

Conventionally, programmable displays were installed on each FA device or machine that the programmable display controlled. Consequently, factories with multiple FA devices required programmable displays corresponding to the number of FA devices, resulting in increased overall factory equipment costs.

In addition, when acquiring data from an external memory to a programmable display, or when acquiring data from a programmable display, it is difficult to input and output data via wireless communication or wired communication from the perspective of communication stability, reliability, or security. Therefore, in the past, the input and output of production method data was performed via portable memories such as USB memories. In addition, the periodic inspection of each device in the factory is an inspection that covers multiple devices, so the inspection is performed by the user visually recognizing the data indicating the status of each device output and displayed on the programmable display. Therefore, there is the possibility of human error in the inspection results. Accordingly, previous programmable displays have the problem of low convenience in terms of data input and output.

Summary of the Invention

The present invention has been made to solve the above-mentioned problems, and an object of the present invention is to provide a programmable display capable of suppressing equipment costs and improving the convenience of data input and output.

In order to solve the above-mentioned problems, the programmable display of the present invention comprises: a touch panel for displaying an operation image for accepting user input operations, an input control mechanism specifically based on processing of input operations relative to the above-mentioned operation image, a device control mechanism for controlling a device based on specific processing by the above-mentioned input control mechanism, a device information acquisition mechanism for acquiring data about the device, and a display control mechanism for displaying a data image based on the acquired data on the above-mentioned touch panel. The programmable display is characterized in that it comprises: a bracket portion, which has the above-mentioned device control mechanism, the above-mentioned device information acquisition mechanism, and a bracket communication portion for transmitting and receiving information with the outside through short-range wireless communication, and is connected to the above-mentioned device as a control object; and a handwriting portion, which has the above-mentioned touch panel, the above-mentioned input control mechanism, the above-mentioned display control mechanism, and a handwriting communication portion for transmitting and receiving information with the outside through short-range wireless communication, and can be loaded and unloaded on the above-mentioned bracket portion, and the above-mentioned bracket portion and the above-mentioned handwriting portion use the above-mentioned bracket communication portion and the above-mentioned handwriting communication portion to transmit and receive information to each other.

In addition, in order to solve the above-mentioned problems, the control method of the programmable display of the present invention is a control method of a programmable display having a bracket communication part that has a bracket communication part that sends and receives information to the outside and is connected to the above-mentioned device as a control object, and a handwriting communication part that has a handwriting communication part that sends and receives information to the outside and can be loaded and unloaded on the above-mentioned bracket part, which is characterized in that it includes: a confirmation signal receiving step, in which the above-mentioned handwriting communication part receives a short-range wireless signal for confirming whether the above-mentioned bracket part is connected to the above-mentioned handwriting part, that is, a confirmation signal from the above-mentioned bracket communication part; a response signal sending step, in which the above-mentioned handwriting communication part sends the above-mentioned short-range wireless signal for responding to the above-mentioned confirmation signal, that is, a response signal; and a short-range wireless communication starting step, in which the above-mentioned bracket communication part and the above-mentioned handwriting communication part use short-range wireless communication to start sending and receiving information.

According to the above configuration, the programmable display of the present invention can be separated from the cradle connected to the device to be controlled and the handwriting unit. Moreover, the cradle mainly controls the device and obtains information from the device, and the handwriting unit has a touch panel and mainly performs input control and display control.

Thus, users can control the device by simply connecting the handwriting unit to the cradle connected to the device they want to control. In other words, only the cradles are needed, not the handwriting units. This reduces device costs.

Furthermore, according to the above-described configuration, the handwriting unit can be attached to and detached from the bracket, allowing it to be removed and carried. Thus, when data is transmitted and received between an information processing device and a device independent of the communication network containing the device, the data is stored in the handwriting unit. Thus, when connected to an information processing device or device (the bracket), data transmission and reception can be performed automatically or through user operation. Furthermore, when performing an inspection across multiple devices, the handwriting unit can be connected to each device to output and display the required data, thereby enabling inspection.

According to this, it is possible to provide a programmable display that can suppress the cost at the time of installation and improve the convenience of data input and output.

Furthermore, according to the aforementioned configuration, the programmable display of the present invention uses near-field wireless communication to transmit and receive information between the handwriting unit and the bracket. In other words, information cannot be transmitted or received unless the handwriting unit and the bracket are in close proximity. This prevents an unspecified number of people from controlling the device using the handwriting unit from a distance, thereby improving security in a programmable display in which the handwriting unit and bracket can be separated.

The programmable display of each mode of the present invention can also be implemented by a computer. In this case, the control program of the programmable display that implements the above-mentioned programmable display by the computer and the computer-readable recording medium that records the control program also fall within the scope of the present invention.

The effects of the present invention are as follows.

The present invention has the effect of providing a programmable display capable of suppressing the cost at the time of installation and improving the convenience of data input and output.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG1 : is a block diagram which shows the structure of the control system including the programmable display in Embodiment 1 of this invention.

FIG. 2 : is a schematic diagram which shows the external appearance of the handwriting part of the programmable display in Embodiment 1 of this invention.

FIG3 : is a schematic diagram which shows the external appearance of the bracket part of the programmable display which concerns on Embodiment 1 of this invention.

FIG. 4 is a transition diagram showing a flow of connection between the handwriting unit and the cradle unit of the programmable display according to the first embodiment of the present invention.

FIG. 5 is a schematic diagram showing the appearance of the office tray according to the present invention.

FIG6 : is a flowchart which shows the flow of the process of the programmable display in Embodiment 1 of this invention.

FIG7 : is a block diagram which shows the structure of the control system including the programmable display in Embodiment 2 of this invention.

FIG8 : is a flowchart which shows the flow of the process of the programmable display in Embodiment 2 of this invention.

FIG9 is a block diagram showing a configuration of a control system including a programmable display according to a modified example of the second embodiment of the present invention.

FIG10 is a block diagram showing a configuration of a control system including a programmable display according to a modified example of the first or second embodiment of the present invention.

FIG11 is a block diagram showing a configuration of a control system of a programmable display including another modified example of the first or second embodiment of the present invention.

DETAILED DESCRIPTION

The following describes embodiments of the present invention in detail. For ease of description, components having the same functions as those shown in the various embodiments are denoted by the same reference numerals, and their descriptions are omitted as appropriate. Furthermore, the shapes, lengths, sizes, and widths of the components depicted in the drawings do not reflect the actual shapes and dimensions and have been modified as appropriate for clarity and simplicity.

<Implementation Method 1>

One embodiment of the present invention will be described below based on FIG. 1 to FIG. 6 .

[Control system configuration]

First, the configuration of a control system 1 of the present invention will be described with reference to Fig. 1. Fig. 1 is a block diagram showing the configuration of a control system 1 including a programmable display 2 according to the present embodiment.

As shown in Fig. 1 , the control system 1 of the present embodiment includes a programmable display 2, a programmable logic controller 5 (hereinafter referred to as "PLC 5"), and a device 6. In addition, the number of the device 6 may be plural.

[PLC Configuration]

The PLC 5, as an external device, obtains the status of the device 6 as the input source via the input unit and gives control instructions to the device 6 as the output destination via the output unit. The PLC 5 performs the above-mentioned operations according to a sequence program (ladder diagram program, etc.) created by the user, for each predetermined scan time of, for example, tens of milliseconds.

Devices such as sensors (temperature sensors, optical sensors, etc.) and switches (push buttons, limit switches, pressure switches, etc.) can be used as input source devices 6. Actuators, relays, solenoid valves, and displays can be used as output destination devices 6. These devices 6 are deployed in various necessary parts of various FA equipment, such as production lines, and constitute part of the control system 1.

The device 6 may be a specific area of the data memory 431 provided to store data input by the user from the touch panel 31 described later. The device 6 may be a specific area of the memory in the PLC 5.

The memory (device memory) within the PLC 5 stores data (word data, bit data) representing the state of the device 6 (output values from the device 6, set values set for the device 6) in an area specified by the device address. In the above-mentioned memory, word devices and bit devices are set. The word device is set as an area for storing word data such as the numerical value of the input and output data, and is specified by the word address (device address). In addition, the bit device is set as an area for storing bit data such as the on and off state, and is specified by the bit address (device address). Thus, by specifying the device address and accessing any word device or bit device in the memory, it is possible to control the device 6 and individually retrieve data about the state of the device 6.

〔Composition of a Programmable Display〕

(Basic functions of programmable displays)

Programmable display 2 has a CPU (Central Processing Unit) that executes the command of the HMI control program that realizes each function, a ROM (Read Only Memory) that stores the HMI control program, a RAM (Random Access Memory) for the HMI control program to be expanded, a storage device (recording medium) such as a memory that stores the HMI control program and various data. This programmable display 2 is a special-purpose computer that displays the input operation made by the user and the image data used for display, thereby realizing the unique operating function and display function of the programmable display, and is preferably used as an HMI device. The above-mentioned image data combination stipulates the processing regulation information of the various processings about the input operation and display action and is made. The programmable display 2 can, based on the above-mentioned image data, the action of the state of the specific display device 6, the action of the state of the control device 6 corresponding to the input operation.

The programmable display 2 communicates with the PLC 5 via the communication cable 50 through its communication function, obtains the status of each device 6 stored in the memory of the PLC 5 as entry data or report data, and displays the status of each device 6 on, for example, a display unit 312 described later. In addition, the programmable display 2 sends control instructions including method data to the PLC 5 through its communication function in response to input operations on the input unit 311 described later.

In addition, the acquisition/change of the status of the device 6 can also be indicated each time, and when acquiring/changing, the memory space in the programmable display 2 (for example, the data memory 431 described later) can be accessed, and communication with the PLC5 can be performed at specified time intervals and specified signals (events) to synchronize with the actual status assigned to each address.

(Configuration of Each Component of a Programmable Display)

The programmable display 2 of the present embodiment includes a handwriting portion 3 and a bracket portion 4. That is, the programmable display 2 of the present embodiment is configured to be separable from the bracket portion 4 relative to the handwriting portion 3. In addition, the appearance structure of the handwriting portion 3 and the bracket portion 4 and the method of attaching and detaching the handwriting portion 3 and the bracket portion 4 will be described later. Moreover, the programmable display 2 includes a touch panel 31, a control portion 32, a storage portion 33, an NFC portion 34 (handwriting communication portion), a power receiving portion 35 (power acquisition portion), and an external power supply detection portion 36 in the handwriting portion 3. In addition, the programmable display 2 includes an input portion 41, a control portion 42, a storage portion 43, an NFC portion 44 (bracket communication portion), a power supply portion 45 (power supply portion), a display portion 46, and an interface (I/F) portion 47 in the bracket portion 4. Below, the main parts of the programmable display 2 are described.

(Composition of each section of the handwriting section)

The touch panel 31 is composed of an input unit 311 and a display unit 312. The input unit 311 is an input device for the user to input an indication signal to the programmable display 2. The input unit 311 is composed of a touch surface that receives contact (including proximity) of an indicator (a user's finger, etc.), and a touch sensor for detecting contact between the indicator and the touch surface and an input position based on the contact. If the touch sensor can detect contact/non-contact between the indicator and the touch surface, it can also be implemented by any sensor. For example, it can be implemented by a pressure sensor, a capacitance sensor, a light sensor, etc. Specifically, the input unit 311 supplies the signal generated by the user's touch operation to the input processing unit 321 described later.

The display unit 312 is a display device that displays information processed by the programmable display 2. Information processed by the display processing unit 322 described later is displayed on the display unit 312. For example, an operation image for receiving an operation for the control device 6 is displayed on the display unit 312. The display unit 312 is composed of a display device such as an LCD (liquid crystal display).

Based on the signals or information obtained, the control unit 32 processes instruction signals input primarily from the input unit 311 or information displayed on the display unit 312. The control unit 32 includes an input processing unit 321 (input control mechanism), a display processing unit 322 (display control mechanism), and a user authentication unit 323 (function restriction mechanism, user information determination mechanism). Furthermore, the control unit 32 may also include various components for using the handwriting unit 3 as a normal handwriting terminal.

The input processing unit 321 specifies pre-set processing information based on the presence or absence of a touch operation and the coordinate information of the touched position, as determined by the signal of the user's touch operation detected by the input unit 311. Furthermore, the specified processing information is supplied to the NFC unit 34. Furthermore, the input processing unit 321 supplies the display processing unit 322 with the clear presence or absence of a touch operation and the coordinate information of the touched position. Furthermore, the input processing unit 321 may be configured to store the coordinate information of the touched position in a time series, thereby enabling the identification of the coordinate information of the trajectory of touch operations continuously input over a constant period of time.

The display processing unit 322 generates an image to be displayed on the display unit 312 based on information supplied from the NFC unit 34 or the input processing unit 321. Specifically, upon receiving information from the NFC unit 34 or the input processing unit 321, the display processing unit 322 retrieves method data stored in the data memory 331 of the storage unit 33 (described later), image data stored in the image memory 332, and/or data indicating the status of the device 6 (entry data, report data) supplied from the NFC unit 34, based on the information received, and generates an image (data image) to be displayed on the display unit 312. The generated image is then displayed on the display unit 312. Alternatively, the display processing unit 322 retrieves image data stored in the image memory 332 of the storage unit 33 (described later) to generate the aforementioned operation image.

The user authentication unit 323 restricts the functions of each part of the handwriting unit 3. In addition, the user authentication unit 323 identifies the user based on the information input by the user. Specifically, in order to authenticate the user, if the user authentication unit 323 obtains the information input into the handwriting unit 3, it searches the user memory 333 of the storage unit described later for information that is consistent with the obtained information. Moreover, if the consistent information can be obtained, the functional restrictions of the various parts of the handwriting unit 3 are lifted. On the other hand, if the consistent information cannot be obtained, the functional restrictions of the various parts of the handwriting unit 3 are maintained. In addition, when the handwriting unit 3 and the bracket unit 4 are connected, that is, when both function as the programmable display 2, if the above-mentioned consistent information can be obtained, the functional restrictions of the various parts of the handwriting unit 3 and the bracket unit 4 are lifted, and the programmable display 2 can be used. In addition, the functional restrictions of the various parts of the handwriting unit 3 and the bracket unit 4 are not specifically limited, as long as they are appropriately determined according to the conditions in which the handwriting unit 3 and the programmable display 2 are used. In addition, the method of inputting user authentication information is not specifically limited. For example, the password may be input via the touch panel 31 or the ID may be read by a reading unit (not shown).

The NFC data identifying unit 324 identifies data (e.g., method data) stored in a data memory 331, described later, to be sent to the cradle 4 (device 6) connected to the handwriting unit 3. Specifically, upon receiving information (ID) uniquely identifying the cradle 4 or device 6 obtained by the NFC unit 34 from the cradle 4, the NFC data identifying unit 324 reads data having an ID that matches the ID from the data memory 331. The read data is then supplied to the NFC unit 34. Thus, simply by connecting the handwriting unit 3 to the cradle 4, the data to be sent to the connected cradle 4 (device 6) can be automatically identified from the plurality of data stored in the handwriting unit 3.

Furthermore, the transmitted data may be identified by the user operating the touch panel 31 .

The storage unit 33 stores various data temporarily or non-temporarily. The storage unit 33 includes a data memory 331, an image memory 332, a user memory 333, and a work memory 334. The storage unit 33 may also store various data for using the handwriting unit 3 as a normal handwriting terminal.

The data memory 331 is composed of SRAM (Static Random Access Memory) and DRAM (Dynamic Random Access Memory), and stores various data generated outside or inside the programmable display 2. As described above, the data memory 331 stores different types of data, so it does not need to be composed of a single memory. It is preferably composed of different types of memories corresponding to the types of data, and even if it is the same memory, the storage area is made different according to the type of data.

As the above-mentioned data, entry data, report data and method data can be listed. Entry data is data obtained by PLC5 from device 6 and data generated inside the programmable display 2, and is stored in the data memory 331 together with the time of generation. Report data is data produced based on the entry data and displays the results extracted under specified conditions. As mentioned above, method data is data supplied from the outside of the programmable display 2, for example, it is supplied to the programmable display 2 via a USB memory. In addition, an ID for uniquely identifying method data for a certain device 6 is pre-added to the method data.

The image memory 332 is a memory for storing image files, etc., and a FEPROM (Flash Erasable and Programmable ROM) can be used. An image file is a file that summarizes the data of one or more images (unit images composed of image data of a single frame) displayed on the programmable display 2. The image file is generally prepared as a design file consisting of a series of related multiple image data corresponding to the control system 1 including the device 6, the product manufactured in the control system 1, etc.

Furthermore, image data is created by image creation software, with component images, graphics, and text arranged on a base image. The image creation software prepares components such as switches (on, off, toggle, and pushbutton switches), lights, numeric keys, and various display components (e.g., numerical display components, instrument display components, graph display components, and alarm display components). The component images are pre-set with the aforementioned processing specification information, which specifies that, when touched, the value of a bit device specified by the desired bit address is rewritten between "0" and "1."

The user memory 333 is a memory for storing information for uniquely identifying a user who uses the programmable display 2 and the handwriting unit 3. The work memory 334 is used for work during calculation processing such as display processing.

The NFC unit 34 is a communication device that transmits and receives information via near field communication (hereinafter referred to as "NFC"). The NFC unit 34 operates using power supplied from the cradle 4 via the power supply unit 45 (described later). The NFC unit 34 receives the aforementioned input data, report data, and other data from the NFC unit 44 of the cradle 4 (described later) via near field communication. The NFC unit 34 then supplies the received data to the control unit 32 and stores it in the storage unit 33. Furthermore, the NFC unit 34 transmits the aforementioned method data and processing specification information based on the user's touch operation to the NFC unit 44.

The power receiving unit 35 receives power from outside the handwriting unit 3. Specifically, the power receiving unit 35 receives power from the power supply unit 45 of the bracket unit 4 (described later) and supplies it to various components of the handwriting unit 3 (e.g., the NFC unit 34). While the power receiving unit 35 assumes a configuration in which the power supply unit 45 is connected to a terminal, the present invention is not limited to this configuration.

The external power supply detection unit 36 (external power supply detection means) detects whether power is being supplied from outside the handwriting unit 3. Specifically, the external power supply detection unit 36 detects whether the power receiving unit 35 receives power from the outside and supplies the power to the NFC unit 34. Furthermore, the external power supply detection unit 36 is configured as, for example, a circuit for detecting an external power source.

Thereby, the handwriting unit 3 has the main input and display functions among the various functions of the programmable display 2 .

(Configuration of Each Part of the Bracket)

The input unit 41 is an input device for the user to input an instruction signal to the programmable display 2. The input unit 41 is preferably used for simple operations of the device 6 (simple operations such as RUN/STOP). Thus, the device 6 can be operated when the handwriting unit 3 is not around. Specifically, the input unit 41 can stop or operate the device 6 in an emergency. For example, it can be a physical key or a touch panel. Alternatively, it can have both. In addition, the bracket portion 4 can also be formed without the input unit 41.

The control unit 42 mainly provides control instructions for the device 6 to the PLC 5 based on the information supplied from the handwriting unit 3, and also obtains information about the status of the device 6 from the PLC 5. The control unit 42 includes a device control unit 421 (device control means), a device information acquisition unit 422 (device information acquisition means), and a user authentication unit 423.

The device control unit 421 controls the device 6. Specifically, the device control unit 421 communicates with the PLC 5 based on the processing designation information supplied from the NFC unit 44, thereby controlling the device 6. In addition, the device control unit 421 confirms the method data supplied from the NFC unit 44 and transmits the confirmed method data to the PLC 5 as needed. At this time, the device control unit 421 refers to the address setting file described later and writes the method data to the PLC 5. Specifically, the device control unit 421 reads multiple data in the data format set in the address setting file from the method data supplied by the NFC unit 44, and writes the address (device address) of the PLC 5 set in the address setting file.

The device information acquisition unit 422 acquires information about the status (operating status) of the device 6. Specifically, the device information acquisition unit 422 communicates with the PLC 5 at predetermined time intervals and predetermined signals, thereby acquiring the status of the device 6 connected to the PLC 5 from the device memory of the PLC 5 as status data. Furthermore, the device information acquisition unit 422 supplies the acquired status data to the NFC unit 44. Furthermore, the device information acquisition unit 422 may store the acquired status data in the storage unit 43, and may also display the acquired status data on the display unit 46 when the handwriting unit 3 and the cradle unit 4 are not connected.

The user authentication unit 423 limits the functions of the various parts of the bracket unit 4. In addition, the user authentication unit 423 specifies the user based on the information input by the user. Specifically, in order to authenticate the user, if the user authentication unit 423 obtains the information input into the bracket unit 4, it retrieves the information consistent with the obtained information in the user memory 433 of the storage unit described later. Moreover, when the consistent information can be obtained, the functional restrictions of the various parts of the bracket unit 4 are lifted. On the other hand, when the consistent information cannot be obtained, the functional restrictions of the various parts of the bracket unit 4 are maintained. In addition, the functional restrictions of the various parts of the bracket unit 4 are not specifically limited, as long as they are appropriately determined corresponding to the conditions of using the bracket unit 4 and the programmable display 2. In addition, the input method of the user authentication information is not particularly limited. For example, it can be the input of a password via the touch panel 31, or it can be the reading of the user ID via a reading unit not shown in the figure.

The storage unit 43 stores various data temporarily or non-temporarily and includes a data memory 431 , a setting memory 432 , a user memory 433 , and a job memory 434 .

The data memory 431 is composed of SRAM and DRAM, and stores various data generated outside or inside the programmable display 2. As described above, the data memory 431 stores different types of data, so it does not need to be composed of a single memory. It is preferably composed of different types of memory corresponding to the type of data. Even if the same memory is used, the storage area is different according to the type of data. Examples of the above-mentioned data include the above-mentioned entry data, report data, and method data.

The setting memory 432 stores an address setting file. This address setting file is referenced when the device control unit 421 instructs the PLC 5 to read or write recording data and report data. The file contains device addresses for reading or writing recording data, report data, and method data, as well as various information related to the recording data, report data, and method data. Furthermore, the setting memory 432 may also store information (ID) for uniquely identifying the bracket unit 4 or the device 6.

The user memory 433 is a memory for storing information for uniquely identifying a user who uses the carriage unit 4. The work memory 434 is used for temporarily storing data exchanged with the PLC 5.

The data stored in the various memories of the storage unit 33 and the storage unit 43 are examples and are not limited to the above examples. For example, the storage unit 33 of the handwriting unit 3 may include a setting memory, and the storage unit 43 of the cradle unit 4 may include an image memory.

The NFC unit 44 is a communication device that transmits and receives information via short-range wireless communication, similar to the NFC unit 34. The NFC unit 44 supplies power to the bracket unit 4 and operates with power from a power supply unit within the FA device (not shown). The NFC unit 44 receives method data and processing designation information from the NFC unit 34 via short-range wireless communication. In addition, the NFC unit 44 transmits input data and report data to the NFC unit 34 via short-range wireless communication. Furthermore, the NFC unit 44 periodically outputs a polling NFC signal to confirm whether the handwriting unit 3 is connected to the bracket unit 4. In other words, when the handwriting unit 3 is connected to the bracket unit 4, a response signal from the NFC unit 34 is output in response to the polling NFC signal. In this way, the NFC unit 34 and the NFC unit 44 can transmit and receive information based on short-range wireless communication.

The power supply unit 45 supplies power to the outside of the bracket unit 4. Specifically, the power supply unit 45 receives power from a power supply unit (not shown) within the FA equipment and supplies it to the power receiving unit 35 of the handwriting unit 3 connected to the bracket unit 4. While the power supply unit 45 is assumed to be connected to the power receiving unit 35 via a terminal, the present invention is not limited to this configuration.

The display unit 46 is a display device that displays information processed by the programmable display 2. Specifically, when the handwriting unit 3 and the cradle unit 4 are not connected, the display unit 46 displays the status data of the device 6 acquired by the device information acquisition unit 422. The cradle unit 4 may also be configured without the display unit 46.

The interface unit 47 is a communication control unit for performing communication between the programmable display 2 and the PLC 5. The interface unit 47 is configured to perform serial communication, USB communication, or network communication according to the manufacturer and model of the PLC 5.

[Appearance and structure of the writing unit and the bracket]

Next, the external appearance of the handwriting unit 3 and the bracket unit 4 will be described with reference to Figures 2 and 3. Figure 2 is a schematic diagram showing the external appearance of the handwriting unit 3, and Figure 3 is a schematic diagram showing the external appearance of the bracket unit 4.

First, the appearance of the handwriting unit 3 will be described. The appearance of the handwriting unit 3 shown in Figure 2 is merely an example, and the unit may also include components other than those described below. For example, it may also include a USB connector. As shown in Figure 2(a), the handwriting unit 3 includes a touch panel 31 on one side. Hereinafter, the side of the handwriting unit 3 with the touch panel 31 will be referred to as the "front side" of the handwriting unit 3.

2( b ), the handwriting unit 3 includes a power receiving unit 35, a power switch 37, and a hook 38 (first connecting unit) on the side opposite to the front side (the back side). Hereinafter, the side opposite to the front side of the handwriting unit 3 will be referred to as the "back side" of the handwriting unit 3.

In Figure 2(b), the power receiving unit 35 is configured as a terminal. When connecting the handwriting unit 3 and the bracket unit 4, the power receiving unit 35 is positioned to connect to the power supply unit 45. The configuration of the power receiving unit 35 as a terminal is merely an example and is not limited to this configuration. Furthermore, the power switch 37 is a switch for supplying power to the handwriting unit 3, enabling operation of the handwriting unit 3.

The hook 38 is a hook-shaped component as shown in FIG2(c). In addition, the hook 38 may also have a hinge as shown in FIG2(c). That is, the hook 38 shown in FIG2(c) is configured so that the portion parallel to the back surface can rotate about the hinge.

Next, the appearance of the bracket 4 will be described. The appearance of the bracket 4 shown in FIG3 is an example, and the bracket 4 may include components other than those shown below. For example, physical keys for operating the device may be included.

As shown in FIG3(a), the bracket portion 4 includes a display portion 46 on one side thereof. Hereinafter, the side of the bracket portion 4 having the display portion 46 is referred to as the "front side" of the bracket portion 4. Furthermore, the bracket portion 4 includes a power supply portion 45 and a magnet 49 (third connecting portion) on its front side.

3( a ), the power supply unit 45 is configured as a terminal. The power supply unit 45 is located at a position connected to the power receiving unit 35 when the handwriting unit 3 and the holder unit 4 are connected. The configuration of the power supply unit 45 as a terminal is shown as an example, but the present invention is not limited to this configuration.

When magnet 49 contacts the back surface of the writing unit 3, it maintains the connection between the writing unit 3 and the bracket 4 through magnetic force. Specifically, the back surface of the writing unit 3 is made of a metal that is attracted to the magnet. The type and material of magnet 49 are not particularly limited as long as it allows for the attachment and detachment of the writing unit 3 and the bracket 4.

3( b ), the surface of the bracket portion 4 that becomes the upper side when connected to the device 6 includes a recessed portion 48 (second connecting portion). Hereinafter, the surface of the bracket portion 4 that becomes the upper side when connected to the device 6 is referred to as the "upper surface" of the bracket portion 4.

The recess 48 is a rectangular depression. Specifically, it is a depression into which the hook 38 of the handwriting section 3 is inserted. While it is rectangular in FIG3( b ), this is merely an example. Its shape, size, depth, and other dimensions are not particularly limited as long as the hook 38 can be inserted.

Furthermore, as shown in FIG3(a), the handwriting portion 3 and the bracket portion 4 are connected so that the front surface of the bracket portion 4 can be completely hidden by the handwriting portion 3. For example, the area of the front surface of the bracket portion 4 only needs to be large enough to allow the handwriting portion 3 to be connected using the connection method described later. This can reduce the area occupied by the bracket portion 4 on the device 6.

[How to connect the writing unit and the bracket]

Next, the installation method of the handwriting unit 3 and the bracket unit 4 will be described with reference to FIG4 . FIG4 is a transition diagram showing the process of connecting the handwriting unit 3 and the bracket unit 4. First, as shown in FIG4( a ), the hook 38 of the handwriting unit 3 is inserted into the recess 48 of the bracket unit 4. At this time, it is preferable to rotate the end of the hook 38 (the portion inserted into the recess 48) in advance in a direction away from the frame of the handwriting unit 3 so that the hook 38 can be easily inserted. Next, as shown in FIG4( b ), the frame of the handwriting unit 3 is pressed toward the bracket unit 4. As a result, as shown in FIG4( c ), the back side of the handwriting unit 3 comes into contact with the magnet 49 of the bracket unit 4 and is fixed by magnetic force.

Thus, the connection between the writing unit 3 and the bracket 4 in this embodiment is achieved through two fixing methods: fixing by inserting the hook 38 into the recess 48, and fixing by the magnetic force of the back surface of the writing unit 3 in contact with the magnet 49. This allows the writing unit 3 and the bracket 4 to be connected simply and firmly.

To separate the writing unit 3 from the bracket 4, first pull the frame of the writing unit 3 away from the bracket 4 to release the magnetic force between the back of the writing unit 3 and the magnet 49. Next, lift the writing unit 3 upward to remove the hook 38 from the recess 48. This allows the writing unit 3 to be separated from the bracket 4 in a simple manner.

[Using the writing unit and the bracket separately]

Next, the use of the handwriting unit 3 and the bracket unit 4 as a single unit will be described. First, the handwriting unit 3 is separated from the bracket unit 4 so that it can be used as a normal handwriting terminal. At this time, the handwriting unit 3 is operated by a power supply unit (battery) not shown in the figure. In addition, from a security point of view, it is preferred that the handwriting unit 3 can be used only by restricted users (factory workers, etc.). Therefore, the handwriting unit 3 can also perform user authentication. The method of user authentication is not particularly limited, for example, it can be the input of a password or the reading of a user ID based on short-range wireless communication.

Furthermore, the cradle unit 4 stores information acquired from the PLC 5 in the storage unit 33 of the handwriting unit 3 , thereby enabling the information stored in another information processing device to be moved.

Here, as an example of moving information obtained from PLC5 to other information processing devices, a case where information is moved to a personal computer for business use is described. Typically, personal computers for business use are often set up in a place different from a place (factory, etc.) where FA equipment, etc., are installed. In addition, from the perspective of safety and security, personal computers for business use are often independent of the communication network (LAN, etc.) within the factory. Therefore, if a programmable display is set up in a FA device, etc. as in the past, when the information obtained from the programmable display is processed by a personal computer for business use, the information must be input and output via a USB memory, etc., which impairs convenience.

On the other hand, in the case of the programmable display 2 of this embodiment, information such as recorded data and report data is stored in the storage unit of the handwriting unit 3. If the handwriting unit 3 is separated from the bracket unit 4, the handwriting unit 3 can be carried to a place where a personal computer for office use is installed. Furthermore, if the handwriting unit 3 is connected to a personal computer for office use, the stored information can be moved to the personal computer for office use.

Figure 5 is a schematic diagram illustrating the appearance of an office bracket 40 used to connect the writing unit 3 to a personal computer for office use. As shown in Figure 5(a), the office bracket 40 includes a power supply unit 405 and a magnet 409 on the surface that contacts the back of the writing unit 3. Hereinafter, the surface of the office bracket 40 that contacts the back of the writing unit 3 will be referred to as the "front" surface of the office bracket 40. The power supply unit 405 and magnet 409 are identical to the power supply unit 45 and magnet 49 of the bracket unit 4, respectively, and therefore their description will be omitted.

The upper surface of the office bracket 40 when installed (hereinafter referred to as the "upper surface" of the office bracket 40) includes a recess 408. The recess 408 is the same as the recess 48 of the bracket 4, and therefore its description is omitted.

In other words, the handwriting unit 3 and the cradle unit 4 are connected using the same method as described above, as shown in FIG5(b). This allows communication between the handwriting unit 3 and the office personal computer via the communication cable 400. Thus, recorded data and report data can be obtained from the handwriting unit 3, and method data created by the office personal computer can be stored in the handwriting unit 3.

The connection between the handwriting unit 3 and an information processing device such as a personal computer for office use is not limited to the above example. For example, the handwriting unit 3 and the information processing device can also be directly connected via a USB connection. However, using the office cradle 40 has the advantage that the user does not need to hold the handwriting unit 3 when connecting the personal computer for office use.

Furthermore, the handwriting unit 3 and the bracket unit 4 can be separated, so the number of handwriting units 3 required can be reduced to match the number of bracket units 4 required for FA equipment, etc. For example, a single handwriting unit 3 can be used to send method data corresponding to multiple different devices, and to store input data and report data obtained from the multiple different devices.

Next, the use of the bracket portion 4 alone will be described. As described above, the bracket portion 4 can display the simple status of the device 6 and perform simple operations on the device 6 by itself. The so-called simple operations specifically refer to stopping and starting the device 6. Thus, in situations where the device 6 should be stopped, such as in an emergency, the device 6 can be stopped even when the handwriting unit 3 is not around. In addition, the operation of the device 6 based on the bracket portion 4 is preferably configured to be able to be performed only by limited users. Therefore, the bracket portion 4 can also perform user authentication. The method of user authentication is not particularly limited, for example, it can be the input of a password, or it can be the reading of a user ID based on short-range wireless communication.

[Processing flow of programmable display]

Next, the flow of the process of the programmable display 2 of this embodiment is demonstrated with reference to FIG6. FIG6 : is a flowchart which shows the flow of the connection detection process of the handwriting part 3. FIG.

First, when the handwriting unit 3 is activated (YES in S1), the external power detection unit 36 determines whether power is being supplied to the handwriting unit from an external source (S2). Specifically, the external power detection unit 36 detects power being supplied from the power supply unit 45 to the power receiving unit 35. When the external power detection unit 36 detects power being supplied from the power supply unit 45 to the power receiving unit 35 (YES in S2), the external power detection unit 36 supplies power to the NFC unit 34. This activates the NFC unit 34 and detects the connection between the handwriting unit 3 and the cradle unit 4.

Next, upon receiving the confirmation signal sent from the NFC unit 44 (Yes in S3, confirmation signal receiving step), the activated NFC unit 34 sends a response signal to the confirmation signal to the NFC unit 44 (S4, response signal sending step). Here, the so-called confirmation signal refers to the short-range wireless signal sent by the NFC unit 44, and is a signal sent to confirm whether the cradle 4 is connected to the handwriting unit 3. By exchanging this confirmation signal and response signal, it is possible to determine whether the cradle 4 and the handwriting unit 3 are connected. Finally, the transmission and reception of information between the NFC unit 34 and the NFC unit 44 begins (S5, short-range wireless communication starting step).

[Functions and Effects of the Invention According to Embodiment 1]

Thus, the programmable display 2 of this embodiment includes a bracket 4 connected to the FA equipment or the like to be controlled, and a handwriting unit 3 that is attachable to and detachable from the bracket 4. Thus, only the brackets 4 are required in a number corresponding to the number of FA equipment or the like, and thus a number of handwriting units 3 does not need to be prepared. Consequently, equipment costs can be reduced.

In addition, the handwriting unit 3 can be transported, so when data is sent and received between an information processing device independent of a communication network including FA equipment, etc. and FA equipment, after the data is sent from the information processing device to the handwriting unit 3, the handwriting unit 3 is connected to the bracket unit 4, or after the data obtained from the device 6 is stored in the handwriting unit 3, it is separated from the bracket unit 4 and only connected to the information processing device.

Furthermore, data acquired from device 6 is stored and transferred to the handwriting unit 3. Therefore, when inspecting multiple FA devices, the handwriting unit 3 can be connected to the bracket 4 installed on each FA device to acquire only the necessary data. This reduces the possibility of human error during inspection and improves the convenience of data input and output.

Furthermore, the handwriting unit 3 and the cradle unit 4 transmit and receive various types of information via short-range wireless communication using the NFC unit 34 and the NFC unit 44, respectively. In other words, information cannot be transmitted or received unless the handwriting unit 3 and the cradle unit 4 are in close proximity. This prevents a user who is located away from FA equipment, etc., from using the handwriting unit 3 to control the device 6. This improves security in a programmable display 2 in which the handwriting unit 3 and the cradle unit 4 can be separated.

Furthermore, when connected to the cradle 4, the NFC unit 34 operates with power supplied from the cradle 4 to the handwriting unit 3, replacing the power supply unit (internal battery) (not shown) of the handwriting unit 3. Furthermore, the external power detection unit 36 detects the power supplied from the cradle 4 and thereby supplies power to the NFC unit 34, thereby initiating short-range wireless communication with the NFC unit 44. Thus, the NFC unit 34 operates only when the handwriting unit 3 is connected to the cradle 4. Furthermore, the NFC unit 34 operates with power supplied from the cradle 4 and initiates communication with the NFC unit 44, allowing the cradle 4 to recognize that the handwriting unit 3 is connected. Furthermore, the power consumption of the handwriting unit 3 can be reduced.

In addition, the user authentication unit 323 can limit the functions of the handwriting unit 3 (the programmable display 2 when the handwriting unit 3 and the bracket unit 4 are connected). In addition, the user authentication unit 423 can limit the functions of the bracket unit 4. In addition, the user authentication unit 323 and the user authentication unit 423 respectively release the above-mentioned restrictions when the user information input from the outside is consistent with the user information stored in the user memory 333 and the user memory 433. Thus, only the logged-in user can use the handwriting unit 3, the bracket unit 4 and the programmable display 2 when these are connected. Thus, it is possible to prevent an unspecified number of people from controlling the device 6 and using the handwriting unit 3.

The back of the writing unit 3 is made of metal and has a hook-shaped hook 38 on it. Meanwhile, the bracket 4 has a concave recess 48 on its top surface and a magnet 49 on its front surface. This allows for two fixing methods: one using the hook 38 inserted into the recess 48, and one using the magnetic force of the back of the writing unit 3 contacting the magnet 49. This allows for a simple and secure connection between the writing unit 3 and the bracket 4. Furthermore, since the convex portion is inserted into the concave portion and the magnet is used for fixing, the bracket 4 and the bracket 4 can be easily separated.

[Variation of Embodiment 1]

Next, a modified example of Embodiment 1 will be described. In this modified example, the power receiving unit 35 of the handwriting unit 3 and the power supply unit 45 of the cradle unit 4 are configured to perform wireless power supply. In other words, when the handwriting unit 3 and the cradle unit 4 are connected, power is supplied from the cradle unit 4 to the handwriting unit 3 via wireless communication.

Thus, the terminals of the power receiving unit 35 and the power supplying unit 45 are not exposed. Therefore, there is an advantage that the problem caused by the configuration of "constantly supplying power to the power supplying unit 45" in the first embodiment described in the second embodiment described later does not occur.

<Implementation Method 2>

7 and 8 , another embodiment of the present invention will be described as follows. In this embodiment, a programmable display 21 in which a power supply unit 45 is subjected to a drip-proof treatment will be described.

In the first embodiment, the power receiving unit 35 and the power supply unit 45 are terminals. When the handwriting unit 3 is separated from the holder unit 4, the power supply unit 45 is exposed. Furthermore, in the configuration of the first embodiment, power is always supplied to the power supply unit 45. However, in food and pharmaceutical manufacturing plants, liquids frequently fall onto FA equipment. If this happens, if the liquid adheres to the power supply unit 45, which is supplied with power, it can cause a short circuit.

Therefore, the programmable display 21 of this embodiment is configured to supply power to the power supply unit 45 only when the handwriting unit 7 is connected to the bracket unit 8. Thus, when the power supply unit 45 is exposed, power is not supplied to the power supply unit 45, thereby reducing the possibility of a short circuit. Here, in order to determine whether the handwriting unit 7 is connected to the bracket unit 8, a determination is made as to whether short-range wireless communication between the NFC unit 34 and the NFC unit 44 is possible. This will be described in detail later.

〔Composition of a Programmable Display〕

Next, the structure of the programmable display 21 is demonstrated with reference to Fig. 7. Fig. 7 is a block diagram which shows the structure of the control system 1 containing the programmable display 21 of this embodiment.

The handwriting unit 7 of this embodiment includes a power supply unit 71. The power supply unit 71 is a battery that supplies power for operating the handwriting unit 7. That is, the NFC unit 34 of this embodiment is configured to be activated by the power from the power supply unit 71 of the handwriting unit 7. In addition, the NFC unit 34 may be configured to be activated by the power supplied from the power supply unit 45 after the handwriting unit 7 and the bracket unit 8 are connected. Thus, in addition to the short-range wireless communication for confirming the connection between the handwriting unit 7 and the bracket unit 8, the NFC unit 34 is also activated by the power supplied from the bracket unit 8, thereby reducing the power consumption of the handwriting unit 7. In addition, the handwriting unit 7 of this embodiment can omit the external power supply detection unit 36 that the handwriting unit 3 of the first embodiment has.

The cradle 8 of this embodiment includes a power supply determination unit 81 (power control means, communication determination means). The power supply determination unit 81 determines whether information can be transmitted and received with the handwriting unit 3 using near-field wireless communication. If such information can be transmitted and received, power is supplied to the power supply unit 45. Specifically, if information indicating the presence of a response signal from the NFC unit 34 is supplied from the NFC unit 44, the power supply determination unit 81 supplies power from a power supply unit of an unillustrated FA device, etc., to the power supply unit 45. Thus, if near-field wireless communication between the NFC unit 34 and the NFC unit 44 is not possible, that is, if the handwriting unit 7 and the cradle 8 are not connected, power is not supplied to the power supply unit 45, thereby reducing the possibility of a short circuit.

[Processing flow of programmable display]

Next, the flow of processing of the programmable display 21 of this embodiment will be described with reference to Fig. 8. Fig. 8 is a flowchart showing the flow of connection detection processing of the bracket unit 8. Fig. 8 also shows the flow of connection detection processing in a state where power supply to the power supply unit 45 is stopped.

First, when the polling timing is reached (Yes in S11), the NFC unit 44 transmits a polling signal (short distance wireless signal) (S12). Alternatively, whether the polling timing is reached can be determined by measuring a predetermined period of, for example, several milliseconds using a timer (not shown).

Next, when the NFC unit 44 receives a response signal from the NFC unit 34 of the handwriting unit 7 (Yes in S13), it supplies NFC enabled information indicating this to the power supply determination unit 81. Furthermore, upon receiving the NFC enabled information, the power supply determination unit 81 supplies power to the power supply unit 45 from a power supply unit (not shown) (S14).

Next, when the time comes to perform polling again (yes in S15), the NFC unit 44 transmits a polling signal (near-field wireless signal) (S16). Furthermore, when the NFC unit 44 receives a response signal from the NFC unit 34 of the handwriting unit 7 (yes in S17), it returns to step S15. On the other hand, when no response signal is received from the NFC unit 34 of the handwriting unit 7 (no in S17), in other words, when the handwriting unit 7 is separated from the cradle unit 8, NFC impossible information indicating this fact is supplied to the power supply determination unit 81. Furthermore, when the power supply determination unit 81 receives the NFC impossible information, it stops supplying power to the power supply unit 45 from the power supply unit (not shown) (S18).

[Effects of the invention according to embodiment 2]

Thus, the programmable display 21 of this embodiment supplies power to the power supply unit 45 when it is determined that short-range wireless communication can be performed between the NFC unit 34 and the NFC unit 44. This makes it possible to determine whether the handwriting unit 7 and the cradle unit 8 are connected, in other words, whether the power supply unit 45 is exposed. If the power supply unit 45 is exposed, power is not supplied to the power supply unit 45. Therefore, even in a place where there is a possibility of liquid adhering to the power supply unit 45, the possibility of a short circuit can be reduced.

[Variation of Implementation Example 2]

Next, if the modification of embodiment 2 is described based on Figure 9, it is as follows. In the handwriting section 70 of the programmable display 22 of this modification, the NFC section 34 is a structure that operates with the signal output by the NFC section 44 as the electromotive force. That is, unlike the above-mentioned embodiment 2, the NFC section 34 is not supplied with power from the power supply section (battery) shown in Figure 9. Specifically, when the NFC section 34 receives the polling signal (short-range wireless signal) output by the NFC section 44, it is started by the signal. Moreover, the NFC section 34 sends a response signal to the above-mentioned polling signal to the NFC section 44. When the NFC section 44 receives the above-mentioned response signal, the NFC possible information indicating the subject is supplied to the power supply determination section 81, similarly to the above-mentioned embodiment 2. Moreover, if the power supply determination section 81 is supplied with the above-mentioned NFC possible information, power is supplied to the power supply section 45 from the power supply section not shown in the figure.

This allows NFC communication to be performed without receiving power from the power supply unit of the handwriting unit 70 .

[Variations common to Embodiments 1 and 2]

Next, a modification example common to the first and second embodiments will be described based on FIG. 10 and FIG. 11 .

The programmable display of the present invention can also switch the configurations of the above-mentioned embodiments 1 and 2, that is, the configuration of always supplying power to the power supply unit 45 and the configuration of supplying power to the power supply unit 45 only when the short-range wireless communication between the NFC unit 34 and the NFC unit 44 can be performed. This switching can also be performed by, for example, a switch not shown.

In addition, as shown in Figure 10, the handwriting unit 9 of the programmable display 23 of the present invention may also have a wireless communication unit 91 (wireless communication determination unit). The wireless communication unit 91 is a communication device that performs wireless communication to detect a wireless LAN (local area network). In addition, the wireless communication unit 91 may also determine whether a specified wireless LAN (for example, a wireless LAN that can be used within the factory's premises) can be detected. Moreover, in the event that detection is impossible, the user authentication unit 323 may also limit the functions of the handwriting unit 9. This prevents the user from using the handwriting unit 9 outside the factory's premises and prevents the handwriting unit 3 from being stolen. In addition, the above-mentioned wireless LAN may also be, for example, Wi-Fi (Wireless Fidelity, a registered trademark).

Furthermore, when the wireless communication unit 91 detects a predetermined wireless LAN and the user authentication unit 323 obtains information that matches the information input to the handwriting unit 9 from the user memory 333 for user authentication, the user authentication unit 323 may remove the function restriction.

The wireless communication unit 91 may not have the function of performing wireless communication but may only have the function of determining whether a predetermined wireless LAN can be detected. Furthermore, the target detected by the wireless communication unit 91 is not limited to a wireless LAN and may be a WAN (wide area network), for example.

In addition, as shown in Figure 11, the handwriting part 90 of the programmable display 24 of the present invention may also be equipped with GPS92 (position information determination means). GPS92 is equipped with a sensor for detecting position information indicating the position of the handwriting part 90. Moreover, GPS92 may also determine whether the detected position information is position information indicating a position within a prescribed range (for example, within the factory's premises). In the case where it is determined that it is not within the prescribed range, the user authentication unit 323 may also limit the functions of the handwriting part 90. In this way, it is possible to prevent the user from taking the handwriting part 90 for use outside the factory's premises and the handwriting part 3 from being stolen.

Furthermore, when the GPS 92 determines that the handwritten portion 90 is within a predetermined range and the user authentication portion 323 obtains information that matches the information input to the handwritten portion 90 from the user memory 333 for user authentication, the user authentication portion 323 may remove the function restriction.

In addition, the programmable display of the present invention may be configured to include a power receiving unit 35 and a power supply unit 45 that perform wireless power supply, and to supply power to the power supply unit 45 only when short-range wireless communication between the NFC unit 34 and the NFC unit 44 is possible. In this case, the NFC unit 34 may be configured to be activated by power from the power supply unit (internal battery) of the handwriting unit, or may be configured to be operated using a signal output by the NFC unit 44 as an electromotive force.

[Software-based embodiment]

The control modules of the handwriting unit 3, handwriting unit 7, handwriting unit 70, handwriting unit 9, and handwriting unit 90 and the bracket unit 4 and bracket unit 8 (especially the input processing unit 321, display processing unit 322, user authentication unit 323, device control unit 421, device information acquisition unit 422, and user authentication unit 423) can also be implemented by a logic circuit (hardware) formed on an integrated circuit (IC chip), etc., or can be implemented by software using a CPU (Central Processing Unit).

In the latter case, the handwriting unit 3, handwriting unit 7, handwriting unit 70, handwriting unit 9, and handwriting unit 90, as well as the bracket unit 4 and bracket unit 8, are equipped with a CPU that executes commands of a program that is software that implements each function, a ROM (Read Only Memory) that records the program and various data in a manner readable by the computer (or CPU), or a RAM (Random Access Memory) that expands the program in a storage device (these are referred to as "recording media"), etc. Furthermore, the computer (or CPU) reads and executes the program from the recording medium, thereby achieving the purpose of the present invention. As the recording medium, a "non-transitory tangible medium" such as a magnetic tape, a disk, a card, a semiconductor memory, a programmable logic circuit, etc. can be used. In addition, the program can also be supplied to the computer via any transmission medium capable of transmitting the program (communication network, broadcast wave, etc.). Furthermore, the present invention can be implemented even in the form of a data signal embedded in a carrier wave that implements the program through electronic transmission.

[Notes]

The present invention can also be explained as follows.

That is, for the programmable display of the present invention, the above-mentioned handwriting unit further has a power acquisition unit that obtains power from the outside and an external power supply detection mechanism that detects the supply of power from the outside. The above-mentioned handwriting communication unit can also start the above-mentioned short-range wireless communication when the above-mentioned external power supply detection mechanism detects that the above-mentioned power acquisition unit obtains power from the outside.

According to the above configuration, in this case, the handwriting communication unit is operated by external power, thereby initiating near-field wireless communication. This reduces the power consumption of the handwriting communication unit. Another example of the external power supply is power supplied from the cradle. Specifically, the handwriting communication unit operates when the handwriting unit is connected to the cradle. This allows the cradle to receive near-field wireless communication from the handwriting communication unit, enabling the handwriting unit and the cradle to exchange information.

In addition, for the programmable display of the present invention, it is preferred that the above-mentioned bracket part further has a power supply part that supplies power to the outside, a power control mechanism that controls the power supplied from the power supply of the above-mentioned device to the above-mentioned power supply part, and a communication determination mechanism that determines whether information based on the above-mentioned short-range wireless communication can be sent and received with the above-mentioned handwriting part. When the above-mentioned communication determination mechanism determines that information based on the above-mentioned short-range wireless communication can be sent and received with the above-mentioned handwriting part, the above-mentioned power control mechanism supplies power from the power supply of the above-mentioned device to the above-mentioned power supply part.

According to the above configuration, when the cradle determines that short-range wireless communication between the handwriting communication unit and the cradle communication unit is possible, power from the power supply of the aforementioned device is supplied to the power supply unit. This allows the determination of whether the handwriting unit and the cradle are connected, in other words, whether the power supply unit is exposed. If the power supply unit is exposed, power is not supplied to the power supply unit. This reduces the possibility of short circuits even in locations where liquid could adhere to the power supply unit.

Moreover, in the programmable display of the present invention, it is preferable that the handwriting communication unit operates using a signal transmitted from the cradle communication unit as an electromotive force.

According to the above configuration, the handwriting communication unit is activated upon receiving a signal transmitted from the cradle communication unit. This allows for near-field wireless communication without requiring power from the power supply of the handwriting unit.

In addition, for the programmable display of the present invention, it is preferred that the above-mentioned handwriting part further has a function limitation mechanism for limiting the functions of the above-mentioned handwriting part, a storage unit for storing user information that uniquely identifies the above-mentioned user, and a user information determination mechanism for determining whether the user information stored in the above-mentioned storage part is consistent with the user information input from the outside, and the above-mentioned function limitation mechanism lifts the limitation on the functions of the above-mentioned handwriting part when the above-mentioned user information determination mechanism determines that they are consistent.

The above configuration restricts the functions of the handwriting section, allowing these restrictions to be lifted if the stored user information matches the externally input user information. This allows only users who have stored their user information in the handwriting section to use the unrestricted functions. This prevents unauthorized individuals from controlling the device and using the handwriting section. Furthermore, it prevents unregistered users from stealing the handwriting section.

In addition, for the programmable display of the present invention, it is preferred that the above-mentioned handwriting part further has a wireless communication determination mechanism for determining whether wireless communication other than short-range wireless communication based on a prescribed communication network can be performed, and the above-mentioned function restriction mechanism lifts the restriction on the function of the above-mentioned handwriting part when the above-mentioned wireless communication determination mechanism determines that wireless communication based on the above-mentioned prescribed communication network can be performed and determines that it is consistent with the above-mentioned user information determination mechanism.

According to the above configuration, in addition to user information matching, functional restrictions on the handwriting unit are also lifted when wireless communication (excluding near-field wireless communication) over a specified communication network is possible. In other words, if the handwriting unit is in a location where wireless communication over a specified communication network is impossible, the functional restrictions are not lifted. Therefore, even if the user takes the handwriting unit away or it is stolen, the handwriting unit with the functional restrictions lifted cannot be used, thus preventing theft and theft.

In addition, for the programmable display of the present invention, it is preferred that the above-mentioned handwriting unit further has a location information determination mechanism for obtaining location information of the local terminal and determining whether the obtained location information is included in the prescribed range, and the above-mentioned function restriction mechanism releases the restriction on the function of the above-mentioned handwriting unit when the above-mentioned location information determination mechanism determines that it is included in the above-mentioned prescribed range and the above-mentioned user information determination mechanism determines that they are consistent.

With the above configuration, functional restrictions on the handwriting section are lifted not only when the user information matches but also when the handwriting location information falls within a specified range. In other words, functional restrictions are not lifted if the handwriting section is outside the specified range. This prevents the user from taking the handwriting section away or having it stolen, preventing the removal of functional restrictions from the handwriting section.

In addition, for the programmable display of the present invention, it is preferred that the handwriting part further includes a surface on the opposite side of the surface having the touch panel, that is, the back side is made of metal, and a hook-shaped first connecting part is provided on the back side, the bracket part further includes a concave-shaped second connecting part provided on the surface which becomes the upper side when connected to the above-mentioned device, and a magnet, that is, a third connecting part, provided on the surface which contacts the back side of the handwriting part when the handwriting part is installed on the bracket part, the bracket part has the first connecting part of the handwriting part inserted into the second connecting part, and the third connecting part contacts the back side of the handwriting part, thereby fixing the handwriting part.

The above configuration allows for two fixing methods: inserting the first connecting portion into the second connecting portion, and magnetically securing the back of the writing portion against the third connecting portion. This allows for a simple and secure connection between the writing portion and the bracket. Furthermore, since the convex portion is inserted into the concave portion and the magnets are used, the writing portion and the bracket can be easily separated.

The present invention is not limited to the above-described embodiments, and various modifications are possible within the scope of the claims. Embodiments obtained by appropriately combining the technical mechanisms disclosed in different embodiments are also included in the technical scope of the present invention.

Industrial application possibilities

The present invention can be utilized in a programmable display for a control device.

Description of Reference Signs

2—Programmable display,

3—Handwriting Department,

4—Bracket part,

31—Touch panel,

33 - Storage Department,

34—NFC unit (handwriting communication unit),

35-Power receiving unit (power acquisition unit),

36—External power supply detection unit (external power supply detection mechanism),

38—hook (first connecting part),

44—NFC unit (cradle communication unit),

45—Power supply department (electricity supply department),

48—Recessed part (2nd connection part),

49—magnet (third connecting part),

81-power supply determination unit (power control unit, communication determination unit),

91- Wireless Communication Department (Wireless Communication Decision-Making Unit),

92—GPS (position information determination mechanism),

321—Input processing unit (input control mechanism),

322 — Display processing unit (display control mechanism),

323—User Authentication Department (Function Restriction Agency, User Information Determination Agency),

421—Device Control Unit (Equipment Control Agency),

422—Device Information Acquisition Unit (Device Information Acquisition Unit),

S3—confirmation signal reception step,

S4—response signal sending step,

S5—Near field wireless communication starting step.

Claims (9)

1. A programmable display comprising: a touch panel for displaying an operation image for receiving user input operations; an input control mechanism for specifying processing based on the input operation relative to the operation image; a device control mechanism for controlling a processing device based on the processing specified by the input control mechanism; a device information acquisition mechanism for acquiring data about the device; and a display control mechanism for controlling the touch panel to display a data image based on the acquired data, characterized in that the programmable display comprises: A bracket unit includes the aforementioned device control mechanism, the aforementioned device information acquisition mechanism, and a bracket communication unit for transmitting and receiving information with an external device via short-range wireless communication; and the bracket unit is connected to the device being controlled. The handwriting unit includes the touch panel, the input control mechanism, the display control mechanism, and a handwriting communication unit that transmits and receives information from the outside via near-field wireless communication, and the handwriting unit can be detached from the bracket unit. The bracket unit and the handwriting unit establish direct communication to send and receive information with each other by using the bracket communication unit and the handwriting communication unit. The bracket section exchanges information with the device connected to the bracket section, and the handwriting unit exchanges information with the device connected to the bracket section via the bracket section. The handwriting unit also has a storage unit in which information obtained from the device by the bracket unit is stored. 2. The programmable display according to claim 1, characterized in that, The handwriting section further includes: The power acquisition department obtains power from external sources; and An external power supply testing device detects the power supply from an external source. The handwriting communication unit begins the short-range wireless communication when the external power detection mechanism detects that the power acquisition unit has obtained power from the outside. 3. The programmable display according to claim 1, characterized in that, The bracket portion further includes: The power supply department supplies electricity to external entities; A power control mechanism that controls the power supplied from the power source of the equipment to the power supply unit; and The communication determination mechanism determines whether it is possible to transmit and receive information with the handwriting unit based on the near-field wireless communication. When the communication determination mechanism determines that it is possible to transmit and receive information with the handwriting unit based on the near-field wireless communication, the power control mechanism supplies power from the power source of the device to the power supply unit. 4. The programmable display according to any one of claims 1-3, characterized in that, The handwriting communication unit operates using the signal transmitted from the bracket communication unit as an electromotive force. 5. The programmable display according to any one of claims 1-3, characterized in that, The handwriting section further includes: A function-limiting mechanism that restricts the functions of the handwriting unit; A storage unit that stores user information that uniquely identifies the user; and The user information determination mechanism determines whether the user information stored in the storage unit is consistent with the user information input from the outside. When the user information determination mechanism determines that the functions are consistent, the function restriction mechanism removes the restriction on the functions of the handwriting unit. 6. The programmable display according to claim 5, characterized in that, The handwriting unit further includes a wireless communication determination mechanism for determining whether wireless communication other than short-range wireless communication based on a specified communication network is possible. When the wireless communication determination mechanism determines that wireless communication based on the specified communication network is possible, and the user information determination mechanism determines that they are consistent, the function restriction mechanism removes the restriction on the functions of the handwriting unit. 7. The programmable display according to claim 5, characterized in that, The handwriting unit further includes a location information determination mechanism that obtains the location information of the local terminal and determines whether the obtained location information is included within a specified range. When the location information determination mechanism determines that the handwriting unit is included within the specified range, and the user information determination mechanism determines that they are consistent, the function restriction mechanism removes the restriction on the functions of the handwriting unit. 8. The programmable display according to any one of claims 1-3, characterized in that, The handwriting unit further includes a back surface made of metal, which is opposite to the side of the handwriting unit having the touch panel, and the handwriting unit also includes a hook-shaped first connecting portion disposed on the back surface. The bracket portion further includes: a concave second connecting portion disposed in the upward-facing surface of the bracket portion when connected to the device; and a third connecting portion formed by a magnet disposed on a surface of the bracket portion, the surface of which contacts the back surface of the handwriting unit when the handwriting unit is mounted on the bracket portion. The first connecting portion of the handwriting unit is inserted into the second connecting portion of the bracket portion, and the third connecting portion contacts the back surface of the handwriting unit, thereby fixing the handwriting unit. 9. A control method for a programmable display, comprising: a bracket portion having a bracket communication unit for transmitting and receiving information externally and connected to a device being controlled; and a handwriting unit having a handwriting communication unit for transmitting and receiving information externally and detachable from the bracket portion, the control method for the programmable display characterized in that it includes: The confirmation signal reception step involves the handwriting communication unit receiving a short-range wireless signal, i.e., a confirmation signal from the bracket communication unit, to confirm whether the bracket unit is connected to the handwriting unit. The response signal transmission step, in which the handwriting communication unit transmits the short-range wireless signal, i.e., the response signal, in response to the confirmation signal; and The short-range wireless communication start step involves the tray communication unit and the handwriting communication unit transmitting and receiving short-range wireless communication start information. The bracket unit and the handwriting unit establish direct communication to send and receive information with each other by using the bracket communication unit and the handwriting communication unit. The bracket section exchanges information with the device connected to the bracket section, and the handwriting unit exchanges information with the device connected to the bracket section via the bracket section. The handwriting unit also has a storage unit in which information obtained from the device by the bracket unit is stored.