JPH11212628A - Display device for control system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make a system flexible by storing data which is read from a port and corresponds to a controller and displaying an inputting means that corresponds to the controller on a display screen, based on the stored data. SOLUTION: It is checked whether a controller is connected to a port (step 302) when the operation of a display device is started (step 301). When it is decided that the controller is connected to the port (YES at the step 302), the kind of controller is identified (step 304). Data tables in the controller are allocated to a data table in the display device in a predetermined sequence (step 305) and a setting part of the controller is shown (step 306). Next, a numeric value frame and a character frame of the displayed setting part are allocated to a data table in the display device in the predetermined sequence (step 307). Finally, it is checked whether a 'confirmation' switch is pushed (step 308) and the processing is finished.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a display device of a control system, and more particularly, to a display device display screen by simply connecting a desired control device to a dedicated control device port. And a display device of a control system in which character frames are automatically assigned and displayed.

[0002]

2. Description of the Related Art Conventionally, in a control system of a production facility or the like, a temperature controller, a timer, a counter, a switch, a lamp, etc. constituting a setting section of each control device are arranged and wired on a control panel, and a programmable logic controller (PL) is arranged.
C) or a host device having a control function, such as a personal computer, is configured to control these.

Recently, in order to meet the demand for a smaller space and more flexible control panel, a configuration has been proposed in which the setting section of each control device is replaced with an electronic switch and arranged on the control panel.

Specifically, the control device is connected to a host device, and a screen corresponding to a setting section of the control device and a monitor screen are displayed on a display screen of a display device connected to the host device. Change the set value of the control device by operating a touch switch on the display screen of the display device, etc.
The present value is configured to be displayed on a monitor.

[0005]

However, in the above-described conventional control system, it is possible to display a flexible control device setting screen and a monitor scene on a display screen of a display device connected to the host device. However, the setting screen and the monitor screen had to be set and created by the user in advance.

In other words, when displaying a setting screen or a monitor screen of a control device by using a display screen of a display device connected to the host device, the user previously sets a numerical value corresponding to the setting screen or the monitor screen of the control device. Create frames and character frames on the host device, and then connect control devices to the host device,
It is necessary to adopt a configuration in which the data of the control device is assigned and displayed in a numerical frame or a character frame corresponding to the setting section or the monitor screen.

[0007] Further, a port dedicated to a control device is provided in a display device having a control function, and the control device is connected to the dedicated port for the control device, so that a setting screen of the control device is displayed on the display screen of the display device. And a configuration in which a monitor screen is displayed have been proposed, but also in this case, it is necessary for the user to create and set a numerical frame and a character frame corresponding to the setting screen and the monitor screen of the control device in advance. was there.

Accordingly, the present invention is to automatically assign and display a numerical frame and a character frame relating to control of the control device on a display screen of the display device simply by connecting a desired control device to the control device dedicated port. It is an object of the present invention to provide a display device of a control system which can make the system flexible.

[0009]

In order to achieve the above object, according to the present invention, a display screen, a port to which a control device is connected, and data corresponding to the control device read from the port are stored. Storage means, input means for receiving an input corresponding to the input means displayed on the display screen, and display for displaying the input means corresponding to the control device on the display screen based on the data stored in the storage means. And control means.

According to a second aspect of the present invention, in a display device of a control system having a plurality of control devices and a display device, the display device includes a display screen and a plurality of ports to which the control devices are respectively connected. Storage means for storing data corresponding to the control device read from this port, input means for receiving an input corresponding to the input means displayed on the display screen, and selection means for selecting one of the control means Display control means for reading data corresponding to the control device selected by the selection means from the storage means and displaying input means corresponding to the selected control device on the display screen based on the data; It is characterized by having.

According to a third aspect of the present invention, a display device for a control system displays a setting screen or a monitor screen of a control device on a display screen, and sets or monitors the control device by operating the display screen. A port for connecting the control device, and storage means for storing a virtual data table corresponding to a setting screen or a monitor screen displayed on the display screen corresponding to the dedicated port;
When connecting a control device to the dedicated port, there is provided allocating means for allocating data of a data table of the control device to a virtual data table stored in the storage device in a preset order. .

According to a fourth aspect of the present invention, in the third aspect of the present invention, the virtual data table corresponds to a setting screen displayed on the display screen or a display frame displayed on the monitor screen. The data to be displayed in the display frame is stored in a preset order.

According to a fifth aspect of the present invention, in the third aspect of the invention, the first control means for updating the contents of the virtual data table in response to an operation on the display screen; Second control means for updating the contents of the data table of the control device in response to the update of the table.

According to a sixth aspect of the present invention, in the third aspect of the present invention, the setting screen or the monitor screen displayed on the display screen in correspondence with the virtual data table includes a plurality of divided screens having different numbers of divisions. A screen is prepared, and a screen having a desired number of divisions is selectively displayed from among the plurality of screens having different division numbers.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a display device of a control system according to the present invention will be described below in detail with reference to the accompanying drawings.

FIG. 1 is a block diagram showing one embodiment of a display device configured by applying the display device of the control system according to the present invention.

The display device shown in FIG. 1 has a data display function and a control function of a plurality of control devices.
The upper part from the arithmetic unit (arithmetic unit (1)) 26 of the part mainly shows a display function unit for realizing the display function, and the lower part from the arithmetic unit (arithmetic unit (2)) of the part A mainly shows a plurality of 1 shows a control function unit that realizes the control function of the control device.

The display function section is mainly composed of the arithmetic unit (arithmetic unit (1)) 26 of section A, and has a display input section formed by superimposing the backlight 14, the display element 15, and the touch panel 16. I have.

The DC voltage (DC voltage IN) input through the terminal block 11 is applied to the backlight 14 via the inverter circuit 13 and the DC / DC converter circuit 12 controls the internal logic. DC power supply for DC
Output as 5VOUT.

The display element driver circuit 21 includes a DC5
A display element driving power supply circuit 25 to which VIN is applied is connected, and the display element 15 is connected to the display element driver circuit 21.
Is controlled by the graphic controller 17 via the.

The graphic controller 17 includes:
An image memory (V-RAM) 22 and a kanji ROM 23 are connected.

Further, the graphic controller 17
A computing device (computing device (1)) 26 of section A is connected to the computing device 26. The computing device 26 is connected to a system ROM 18, an image data memory 19, and a work RAM 20, and furthermore, a touch switch 16 via a touch switch interface 24. It is connected to the.

The arithmetic unit of the section A (the arithmetic unit (1))
26 is connected to an arithmetic unit (arithmetic unit (2)) 28 via a buffer memory (buffer RAM, data memory (ROM)) 27.

The control function section is mainly composed of the arithmetic unit (arithmetic unit (2)) 28 of section A. As this control function section, for example, a PLC is assumed.
Control devices connected to the communication interface circuit 3
Control via 2.

The arithmetic unit 28 includes a system R
The OM 29, the work RAM 30, and the user memory 31 are connected. If the control function unit is a PLC, the user memory 31 stores a ladder program.

The arithmetic units 26 and 28 can each be constituted by a CPU (arithmetic processing unit).

Although the graphic controller 17 of the display function section may not be provided, the graphic controller 17 can increase the drawing speed of figures and the like.

When the display element 15 is a self-luminous element such as an EL element or a PDP element, the backlight 14 becomes unnecessary.

When the display element 15 is a liquid crystal, the backlight 14 is basically required. However, when the reflection type liquid crystal is used, the backlight 14 becomes unnecessary.

The port 33 for connecting a control device is
The port 33 need not be inside the display device 10 and may be outside. Whether the port 33 is provided inside or outside the display device 10 depends on whether the display device 1 is a component of the system.
It is determined by the relationship between the required size of 0, the space where ports can be arranged, and the number of required ports.

FIG. 2 is a block diagram showing details of part A of the display device shown in FIG.

In FIG. 2, an arithmetic unit (arithmetic unit (1)) 26 is composed of a CPU, and its CPU bus is connected to a bus control circuit (bus control circuit (1)) 34 composed of an integrated circuit (IC). A buffer RAM 27-1 and a data memory ROM 27-2 are connected to each other, and an arithmetic unit (arithmetic unit (2)) 28 also includes a CPU. The CPU bus has a bus control circuit (IC) composed of an integrated circuit (IC). Buffer RA via bus control circuit (2) 35
M27-1 and data memory ROM 27-2 are connected.

A signal line for transmitting the busy signal of the buffer RAM 27-1 is provided between the arithmetic unit 26 and the arithmetic unit 28. The arithmetic unit 26 and the arithmetic unit 28 are connected to the buffer RAM 27-1. The bus control circuit 34 and the bus control circuit 35 are controlled based on the busy signal.

That is, in the display device 10, the arithmetic devices 26 and 28 include a buffer RAM 27
-1 are shared, and the bus control circuit 3
The bus control circuit 4 and the bus control circuit 35 are provided to prevent data collision between the arithmetic unit 26 and the arithmetic unit 28.

More specifically, the bus control circuit 34 and the bus control circuit 35 are formed of three-state buffers, and the bus control circuit 34 and the bus control circuit 35 use the buffer RAM 27-1 of the arithmetic unit 26 and the arithmetic unit 28, respectively.
And whether or not to connect each CPU bus of the arithmetic unit 28 to the buffer RAM 27-1.

FIG. 3 is a functional block diagram showing a detailed configuration of the arithmetic unit (1) 26 of the display device shown in FIG.

In FIG. 3, an arithmetic unit (arithmetic unit (1)) 26 is mainly composed of a system execution function unit 261 and has a function unit 262 for reading a data file from an internal memory or an external memory. A function unit 263 for storing the data table in an internal memory or an external memory, a function unit 264 for changing the contents of a data table in the display device by an input from a touch switch 16 of a touch panel arranged at the top of the display screen, a data file 265 to load the contents of the data table to change the display of the display screen, and the graphic controller 17 to control the graphic controller 17 to display images or numerical values on the display screen. It has a function unit 267 for displaying.

FIG. 4 is a functional block diagram showing a detailed configuration of the arithmetic unit (2) of the display device shown in FIG.

In FIG. 4, an arithmetic unit (arithmetic unit (2)) 28 is composed mainly of a system execution function unit 281 and communicates with a data table in the control device. A control instruction function unit 283 to be executed, a function unit 284 for changing the contents of the data table in the control device in accordance with a change in the contents of the data table in the display device, a function unit 285 for reading a control program from a user program, and data in the control device. A function unit 286 for changing the contents of the data table in the display device according to the change of the contents of the table is provided.

FIG. 5 is a functional block diagram showing a detailed configuration of the graphic controller of the display device shown in FIG.

In FIG. 5, the graphic controller 17 has a display function section 170, which controls the display section (display element driver circuit 21) based on an input from the arithmetic unit 26. It has a drawing function unit 171, a function unit 172 for storing image data in the image memory 22, a function unit 173 for reading image data from the image memory 22, and a function unit 174 for calling character data from the kanji ROM 23.

FIG. 6 is a flowchart showing the operation of the display device shown in FIG.

In FIG. 6, when the operation of the display device 10 is started (step 301), first, the port 3
It is checked whether or not a control device is connected to Step 3 (Step 30).
2). If the control device is not connected to the port 33 (NO in step 302), another process is executed (step 303), and the process returns to step 302 to return to port 3
Wait for the control device to be connected to 3.

When it is determined in step 302 that a control device has been connected to the port 33 (YE in step 302).
S), the type of the control device is identified by inputting a code or a format (step 304).

Then, the data table in the control device is allocated to the data table in the display device in a predetermined order (step 305), and the setting section of the control device is displayed by the identification (step 30).
6).

Next, the numerical value frame and the character frame of the displayed setting section are assigned to the data table in the display device in a predetermined order (step 307).

Next, it is checked whether the "confirmation" switch has been pressed (step 308). If the "confirmation" switch has not been pressed (NO in step 308), another process is executed (step 309). ), Return to step 308,
Wait for the "Confirm" switch to be pressed,
If it is determined at 08 that the "confirmation" switch has been pressed (YES at step 308), the processing of the display device 10 ends (step 310).

FIG. 7 is a flowchart showing the operation of the arithmetic unit (1) of the display device shown in FIG.

In FIG. 7, the arithmetic unit (arithmetic unit (1)) 26 starts its operation (step 4).
01), the graphic controller 17 is driven according to the contents of the data table in the display device to perform display by the display element 15 (step 402).

Next, it is checked whether the contents of the data table in the display device have been changed (step 403). here,
When it is determined that the content of the data table in the display device has been changed (YES in step 403), the display by the display element 15 is changed according to the content of the data table in the display device (step 404), and the process proceeds to step 405. .

If it is determined in step 403 that the contents of the data table in the display device have not been changed (NO in step 403), the process proceeds to step 40.
Go to 5.

In step 405, the touch switch 16
Check if is pressed. If it is determined that the touch switch 16 has not been pressed (NO in step 405), another process is executed (step 406), and the process returns to step 405.

If it is determined in step 405 that the touch switch 16 has been pressed (YES in step 405), the contents of the data table in the display device are changed according to the input from the touch switch 16 (step 40).
7), the processing of the arithmetic unit 26 ends (step 4)
08).

FIG. 8 is a flowchart showing the operation of the arithmetic unit (2) of the display device shown in FIG.

In FIG. 8, the operation of the arithmetic unit (arithmetic unit (2)) 28 is started (step 5).
01), the contents of the data table in the control device are written in the data table in the display device (step 502).

Next, it is checked whether the contents of the data table in the control device have been changed (step 503). If it is determined that the content of the data table in the control device has been changed (YES in step 503), the content of the data table in the display device is changed according to the change in the content of the data table in the control device ( Step 504) and proceed to step 505.

If it is determined in step 503 that the contents of the data table in the control device have not been changed (NO in step 503), the process proceeds to step 50.
Go to 5.

At step 505, the touch switch 16
To check whether the contents of the data table in the display device have been changed by the input of. If it is determined that the content of the data table in the display device has been changed by the input of the touch switch 16 (YES in step 505), the data table in the control device is changed according to the change in the content of the data table in the display device. Is changed (step 50).
6), the processing of the arithmetic unit 28 ends (step 5).
07).

If it is determined in step 505 that the contents of the data table in the display device have not been changed by the input of the touch switch 16 (step 505).
(NO at step 507), and the process of the arithmetic unit 28 is terminated as it is (step 507).

FIG. 9 is a diagram showing the order in which each numerical value frame and character frame of the image data shown in the flowchart shown in FIG. 6 are allocated to the data table in the display device.

FIG. 9 shows, by way of example, the order in which each numerical value frame and character frame of image data are assigned to the data table in the display device in the case of a temperature controller E5 □ J data file.

That is, in this case, the image data displayed on the display device includes a numerical value frame “PV”, a numerical value frame “SV”, a lamp display frame “OUT”, and a lamp display frame “OUT”. STOP "and the lamp display frame" ALM
1 ", lamp display frame" ALM2 ", switch display frame" selection key ", switch display frame" down key ", switch display frame" up key ", lamp display frame" HB " , A character frame “character frame 1” and a character frame “character frame 2” are set, and correspondingly, the data table (virtual data table) in the display device includes: 1) PV (= Numerical value) 2) SV (= numerical value) 3) Up key (= switch) 4) Down key (= switch) 5) Select key (= switch) 6) ALM1 (= ramp) 7) ALM2 (= ramp) 8 ) OUT (= ramp) 9) STOP (= ramp) 10) HB (= ramp) 11) Character frame 1 12) Character frame 2

FIG. 10 shows that when the control device shown in the flow chart shown in FIG. 6 is connected to the port of the display device, the data table in the control device is stored in the empty data table in the display device in a predetermined order. FIG. 9 is a diagram illustrating a state in which each numerical value frame and character frame of data are allocated in the order in which they are allocated to a data table in the display device.

FIG. 10 shows a case where the temperature controller E5 □ J is connected to the port 33 of the display device 10.

That is, as shown in FIG. 10, the correspondence between the data table in the temperature controller E5 □ J, which is an example of the control device connected to the port 33 of the display device 10, and the data table in the display device is shown. Then, the contents of the data table corresponding to the temperature controller E5 □ J data file are developed on the display screen.

FIG. 11 shows a data file corresponding to the control device shown in the flowchart shown in FIG.
FIG. 4 is a diagram illustrating a state in which a data table of a control device is allocated to an image on a display screen of a display device.

FIG. 11 also shows a case where the temperature controller E5 □ J is connected to the port 33 of the display device 10.

As shown in FIG. 11, a temperature controller E, which is an example of a control device connected to the port 33 of the display device 10,
The data table in 5 □ J is associated with the data table in the display device, and the data table in the display device is associated with the image on the display screen of the display device.

In the above configuration, the screen design can be easily changed by changing the arrangement of switches, lamps, and numerical frames assigned to each data table of the virtual data table shown in FIG.

That is, if the functions are the same, it is of course possible to change individual designs (for example, switches, etc.). For example, it is possible to enlarge switches, change shapes, etc.
Can be combined with your preferred arrangement.

Also, for example, it is easy to replace the numerical value frame such as PV or SV and the up / down switch with the thumb rotary switch in FIG. 9 because the two are functionally equivalent.

FIG. 12 is a diagram showing a display example in a case where the numerical value frames such as PV and SV and the up / down switch shown in FIG. 9 are replaced with a thumb rotary switch.

As shown in FIG. 12, the display example in which the numerical value frame and the up / down switch as shown in FIG. 9 are combined, that is, the display example on the left side of FIG. 12 is different from the display example on the right side using the thumb rotary switch. Since they are equivalent, it is easy to change the display example on the left side of FIG. 12 to the display example on the right side of FIG.

When a plurality of control devices are connected to a plurality of ports, the screens corresponding to the plurality of control devices can be displayed simultaneously by dividing the screen of the display device.

FIG. 13 is a diagram showing a display example in which the display screen of the display device is divided into eight screens, and the screens of the control devices connected to the ports 1 to 8 are displayed on the respective divided screens.

In general, the display screen of this type of display device has an easy-to-see screen division number depending on the screen size and the number of pixels. This is, for example, 8 screens in upper and lower two rows of 4 screens each, and is divided into n in advance.
It is easy to prepare divided screens.

FIG. 14 is a diagram showing another display example in which the number of divisions of the display screen of the display device can be switched.

Conventionally, when changing the number of divisions, a new screen is created and each data table is reallocated. However, as shown in FIG. 14, a screen in which the number of divisions is changed is prepared in advance. By simply connecting the control device to the port, the screen data and the data table can be linked as shown in FIGS. 9 to 11, for example. Can be.

Then, by switching this screen by operating the switch to the “1 split screen” or the “return” switch shown in FIG. 14, it looks as if the number of screen divisions has changed. Therefore, the user can change the size (the number of divisions) of the setting screen of the connected control device without doing anything.

In other words, according to this configuration, screens from 1 to n or N are prepared in advance, and the switches, lamps, character frames, and numerical frames of each divided image are the same in the display device. Since it is assigned to the data table, even if the screen is switched, only the size of the displayed image changes, but there is no functional change. Also, if the size is the same and the design is the same as the number of divisions, the screens are switched according to usability, so that it looks as if only the number of divisions of the screen has changed.

Further, if the data conforms to the virtual data table shown in FIG. 9, even if it is added, compatibility can be obtained, and even if it is registered as new, it can be handled in the same way as conventional data. Therefore, it is also possible to supply (add-in) newly created data and the like in an external memory unit.

FIG. 15 is a diagram showing another display example of a display screen in which newly created data and the like are added in by an external memory unit.

In other words, in the above description, it is accepted that preparing the setting section of each control device in advance may limit the degree of freedom of the user, but this is to prepare a plurality of devices having different designs. Can make up for it. In the different design, the number frame and the character frame which have the same function although the shape is different are respectively assigned to the data table in the same display device in advance, so that the function itself does not change at all.

When the control device is connected to the display device, the user is allowed to select from a plurality of designs including the add-in,
The selected data is registered as a setting screen of the connected control device. Here, even if the display screen of the predetermined setting unit is prepared in advance on the display device, the selection options are not reduced.

FIG. 16 is a block diagram showing another embodiment of the present invention which enables distributed control of the system by connecting a host device to the display device shown in FIG.

In the embodiment shown in FIG. 16, FIG.
The display device 10 is provided with an upper port 34 which is a dedicated port for connecting to a host device 40 such as an upper PLC or a personal computer. When the control cannot be performed by the display device 10, the host device 40 is connected to the host device 40 via the host port 34.

Thus, by exchanging information with the host device 40 via the upper port, so-called distributed control using the upper host device 40 becomes possible, and a larger system can be realized.

FIG. 17 shows still another embodiment of the present invention in which the system is expanded by connecting an external memory unit to the arithmetic unit (1) of the display device shown in FIG. 1 via a connector. FIG.

In FIG. 17, a connector 35 is connected to the CPU bus of the computing device (computing device (1)) 26 of the display device 10.
The connector 35 is connected to the connector 51 of the external memory unit 50.

Here, the external memory unit 50 includes:
A memory (ROM) 52 containing a data file and connected to the connector 51 is built in.

As described above, by directly connecting the memory (ROM) 52 of the external memory unit 50 to the CPU bus of the arithmetic unit 26, the memory (R
OM) 52 at high speed with internal memory (system ROM 18)
Can be treated as equivalent to

That is, although there are actually many types of data files described with reference to FIG. 9, that is, many types of control devices, there are a plurality of types of the same type, for example, a temperature controller. May not be stored. Therefore, as shown in FIG. 17, the external memory unit 50 is mounted in accordance with the control device connected to the port, and the developed result is written into the image memory and the data table in the display device as shown in FIG. The configuration is as follows.

According to the above-described configuration, the labor of creating a screen of a display device, which has conventionally required a lot of man-hours, is reduced.

That is, when creating the screen of the display device, first, switches, lamps, character frames, and numerical frames are arranged on the screen for each screen while considering a desired design. Here, the desired design refers to a display screen that is easy to view by devising not only the arrangement position but also, for example, coloring and a background pattern.

For example, if a switch for switching to another screen is assigned to the created screen, it can be set so that the screen is switched to when the switch is pressed. By linking the screens with each other, the flexibility of changing the display screen of the display device so as to flip the picture book can be achieved.

The work of creating such a screen and linking the screens is an indispensable work of this type of display device, but it is difficult to consolidate this work in the conventional configuration, and the same work must be performed each time. Although it was necessary to repeat the above, according to the above configuration, the setting screen of each control device is prepared in advance, so that it is not necessary to create the screen each time.

Further, since the screens of 1 to N divisions are prepared in advance and the switches are already assigned, even a user who is not used to the display device to set and monitor the control device can switch the screen and set the control device. In addition, the minimum functions of monitoring and monitoring can be easily used. The minimum functions include changing the number of display screens depending on the number of connected control devices, and in some cases, changing the display size such as increasing the size when setting and decreasing the size when monitoring.

Further, the trouble of connecting the display device and the control device is eliminated.

That is, when setting and monitoring of the control device are performed using the display device, it is necessary to assign character frames and numerical value frames to a data table inside the display device.
By linking the data table inside the control device connected to the dedicated port via the data table inside this display device, for example, by inputting the address of the other party to a predetermined location, the setting of the corresponding control device and Although monitoring becomes possible, the work of allocating to such an internal data table is almost fixed, but the same work is repeated each time.

This operation takes time for an unskilled user, and also takes time for an unskilled user if the number of connected control devices increases.

However, according to the above configuration, the above operation is not required at all. This is because a numerical value frame or a character frame (for setting the control device) is assigned to a specific location of the display device simply by connecting the control device to a dedicated port inside or outside the display device.

For example, this is possible because the dedicated port and the data table inside the display device are linked in advance. Here, since the number of data tables necessary for setting and monitoring the control device is large, it is also possible to assign a fixed number of data tables to each of the dedicated ports in advance.

Further, for example, the required number of connected dedicated ports (the number of required data tables can be determined by determining the type of connected control device) can be assigned from the table.

When the display device is used for setting and monitoring the control device, a screen such as a setting section of the control device is created, and a numerical frame or the like arranged on the display screen is displayed on each control device. Is required to be allocated to the data area of the above). This work is a steady work in which the contents of the work are determined, but if the connection setting (each assignment work) is mistaken even in one place, the intended use of the user is not achieved. And it takes time to repair it.

However, according to the above configuration, the data table is allocated to the dedicated port in advance, and display screen data, for example, similar to the setting unit of the control device is prepared for each control device. (For example, by using an identification code at the time of connection), it is possible to simply connect the control device to the dedicated port and eliminate the assignment work that is easily mistaken.

More specifically, it is assumed that the number of data tables of the control device connected to the port is five. Then, one or more data tables in which codes for identifying the types of control devices are added are added, and six or more data tables (for example, a character frame for a display screen for an increase of six or more) are secured in the data table in the display device. . Since the contents and order of the data table of the control device are determined in advance with the display device, when the device is connected to the port of the data table display device, the type of the control device is determined, and the data in the control device is determined. The tables are connected in a predetermined order from a data table for a control device connected to a port of the display device secured in the display device.

When the setting section of the control device prepared in advance for various control devices is displayed as image data of the display device, the numerical value frame of the image of the setting portion can be displayed according to a predetermined content and order. Since the character frame is linked to the data table in the display device, the connection is completed.

The devices connected to the ports of the display device are not limited to control devices, but may be hosts such as PLCs, microcomputer boards and personal computers, and devices (for example, servo and motion controllers) that control actuators such as servo controllers. Is also extensible.

[0109]

As described above, according to the present invention, a virtual data table corresponding to a setting screen or a monitor screen displayed on a display screen corresponding to a dedicated port for connecting a control device is provided. When a control device is connected to a port, the data in the data table of the control device is assigned to the virtual data table in a preset order, so simply connecting the desired control device to the dedicated control device port is displayed. Numerical frames and character frames related to the control of the control device can be automatically allocated and displayed on the display screen of the device, thereby making the system flexible.

[Brief description of the drawings]

FIG. 1 is a block diagram showing an embodiment of a display device configured by applying a display device of a control system according to the present invention.

FIG. 2 is a block diagram showing details of a portion A of the display device shown in FIG. 1;

FIG. 3 is a functional block diagram showing a detailed configuration of an arithmetic unit (1) of the display device shown in FIG.

FIG. 4 is a functional block diagram showing a detailed configuration of an arithmetic unit (2) of the display device shown in FIG. 1;

FIG. 5 is a functional block diagram showing a detailed configuration of a graphic controller of the display device shown in FIG.

FIG. 6 is a flowchart showing the operation of the display device shown in FIG.

FIG. 7 is a flowchart showing an operation of the arithmetic unit (1) of the display device shown in FIG. 1;

FIG. 8 is a flowchart showing the operation of the arithmetic unit (2) of the display device shown in FIG.

FIG. 9 is a diagram showing the order in which each numerical value frame and character frame of the image data shown in the flowchart shown in FIG. 6 are allocated to a data table in the display device.

FIG. 10 is a diagram showing a flow chart of FIG. 6. When the control device is connected to the port of the display device, the data table in the control device is stored in an empty data table in the display device in a predetermined order. The figure which shows a mode that a numerical value frame and a character frame are allocated in the order allocated to the data table in a display device.

FIG. 11 is a view showing a state in which a data file corresponding to the control device shown in the flowchart shown in FIG. 6 is expanded and a data table of the control device is assigned to an image on the display screen of the display device.

FIG. 12 is a view showing a display example in a case where the numerical value frames such as PV and SV shown in FIG. 9 and the up / down switch are replaced with a thumb rotary switch.

FIG. 13 is a diagram showing a display example in which the display screen of the display device is divided into eight screens, and the screens of the control devices connected to the ports 1 to 8 are displayed on the respective divided screens.

FIG. 14 is a diagram showing another display example in which the number of divisions of the display screen of the display device can be switched.

FIG. 15 is a diagram showing another display example of a display screen in which newly created data and the like are added in by an external memory unit.

FIG. 16 is a block diagram showing another embodiment of the present invention in which the host device is connected to the display device shown in FIG. 1 to enable distributed control of the system.

17 is a block diagram showing still another embodiment of the present invention in which the system is expanded by connecting an external memory unit to the arithmetic unit (1) of the display device shown in FIG. 1 via a connector. .

[Explanation of symbols]

 Reference Signs List 10 display device 11 terminal block 12 DC / DC converter circuit 13 inverter circuit 14 backlight 15 display element 16 touch switch 17 graphic controller 18 system ROM 19 image data memory 20 work RAM 21 display element driver circuit 22 image memory 23 kanji ROM 24 touch Switch interface circuit 25 Display element drive power supply circuit 26 Arithmetic unit (1) 27 Buffer memory 28 Arithmetic unit (2) 29 System ROM 30 Work RAM 31 User memory 32 Communication interface circuit 33 Port 34 Bus control circuit (1) 35 Bus Control circuit (2)

Claims (6)

[Claims] 1. A display screen, a port to which a control device is connected, storage means for storing data corresponding to the control device read from the port, and an input corresponding to the input means displayed on the display screen. A display device for a control system, comprising: input means for accepting; and display control means for displaying input means corresponding to the control device on the display screen based on data stored in the storage means. 2. A display device of a control system having a plurality of control devices and a display device, wherein the display device has a display screen, a plurality of ports to which the control devices are respectively connected, and control read from the ports. Storage means for storing data corresponding to the device; input means for receiving an input corresponding to the input means displayed on the display screen; selecting means for selecting one of the control means; Display control means for reading data corresponding to the selected control equipment from the storage means and displaying input means corresponding to the selected control equipment on the display screen based on the data. Display device of the system. 3. A display device of a control system for displaying a setting screen or a monitor screen of a control device on a display screen and setting or monitoring the control device by an operation on the display screen, wherein the control device is connected. A port, storage means for storing a virtual data table corresponding to a setting screen or a monitor screen displayed on the display screen corresponding to the dedicated port, and connecting the control device to the dedicated port. And a allocating means for allocating the data of the data table to the virtual data table stored in the storage means in a predetermined order. 4. The virtual data table stores data to be displayed on a display screen in a preset order corresponding to a display screen displayed on a setting screen or a monitor screen displayed on the display screen. The display device of the control system according to claim 3, wherein: 5. A first control means for updating the contents of the virtual data table in response to an operation on the display screen, and updating the contents of the data table of the control device in response to the updating of the virtual data table. 4. The display device of the control system according to claim 3, further comprising: a second control unit for updating. 6. A setting screen or a monitor screen displayed on the display screen corresponding to the virtual data table includes a plurality of screens having different numbers of divisions. 4. The display device of the control system according to claim 3, wherein a screen of a desired number of divisions is selectively displayed.