JP3489233B2 - Data display device and data display method - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a data display device and a data display method capable of promptly displaying data.

[0002]

2. Description of the Related Art FIG. 10 shows a conventional data display device.
Programmable logic controller 2 (hereinafter,
Described as PLC. There is a data display device 1 for displaying the equipment data indicating the state of the equipment in ().

The PLC 2 has an internal memory section 11 for storing equipment data from the equipment and a control signal for the equipment and an input / output memory section for temporarily storing data when inputting / outputting data to / from the data display device 1. There are twelve. The control signal stored in the internal memory unit 11 is subjected to display processing by the display PLC software 13 that performs data processing to be displayed by the data display device 1. The display-processed signal is temporarily stored in the input / output memory unit 12 that inputs and outputs data to and from the data display device 1.

Further, the data display device 1 includes an I / F memory unit 3 for inputting / outputting data to / from the PLC 2 and temporarily storing facility data, and a screen display library for storing characters for displaying a screen. There is a screen definition database 5 for storing the part 4 and the position of characters on the screen to be displayed. Then, the equipment data is displayed by the display processing software 6 and the display unit 7, which are display means for composing and displaying the data. That is, the facility data, the characters to be displayed, and the positions of the characters to be displayed constitute a screen displayed by the display processing software 6 that configures the screen to be displayed. The configured data is displayed by the display unit 7 that displays the data.

As shown in FIG. 11, the data displayed by the data display device 1 has a column for displaying the state of equipment, a column for displaying the presence or absence of abnormality, and a column for displaying the serial number of the facility. , Is displayed on the left side by a table consisting of equipment number columns indicating the locations of the equipment.

The screen definition data section 5 has a display element parameter 8 as shown in FIG. The parameter 8 is composed of a data display position, a data address, and a graphic to be displayed.

The screen display library section 4 stores display data such as power-on as shown in FIG.

The PLC 2 and the data display device 1 are
It works as follows.

The PLC 2 sets equipment signals necessary for screen display in the input / output memory unit 12 according to the screen number input as shown in the flowchart of FIG. 14 (S).
1) If all screen numbers are displayed (S
2), the process ends.

Further, the data display device 1 writes the screen number in the I / F memory unit 3 (S11), reads the screen definition data corresponding to the screen number (S12), and sets the contents of the display parameter address. I / F
When it is read from the memory unit 3 (S13) and the bit for display is turned on (S12), the display figure is drawn from the display position according to the display parameter (S15). If the bit is off (S14), when all the corresponding screen numbers are displayed (S16), the process ends.

However, displaying by this data display device requires a sequence for display processing on the PLC side in addition to a sequence for equipment control, so the processing speed of PLC is reduced and the productivity in equipment is also reduced. Was.

Therefore, in order to solve such a problem, FIG.
The data display device 20 as shown in FIG.
There is communication processing software 21 which is a data input / output means for reading / writing facility data from / internal memory 31 which stores facility data inside. The positions of the characters to be displayed from the screen display library section 4 and the characters to be displayed from the screen definition database 5 are determined by the communication processing software 2 by the display processing software 6.
Configure the screen to be displayed from 1. The configured data is displayed on the display unit 7 for displaying the data.

As shown in FIG. 17, the data displayed by the data display device 20 has a column for displaying the state of the equipment, a column for displaying the presence or absence of abnormality, and a column for displaying the serial number of the facility as shown in FIG. , Is displayed on the left side by a table consisting of equipment number columns indicating the locations of the equipment.

The screen definition data section 5 has a display element parameter 8 as shown in FIG. The parameter 8 is composed of a data address, a data display position, a display attribute, and a graphic to be displayed.

The screen display library section 4 stores display data such as power-on as shown in FIG.

The data display device 20 operates as follows.

As shown in the flowchart of FIG. 20, the data display device 20 reads the internal memory 31 of the PLC 30 designated by the address in the display parameter by the communication processing software 21 (S21), and displays it on the display figure (base). The display library data offset by a numerical value is drawn according to the display position in the display parameters (S2
2). When all the display library data have been displayed (S23), the processing ends.

However, since this data display device displays the facility data from the PLC using the communication processing software, when updating this display, the communication processing time increases according to the amount of data to be communicated. Therefore, the equipment data could not be displayed promptly.

[0019]

SUMMARY OF THE INVENTION It is therefore an object of the present invention to provide a data display device and a data display method for quickly displaying facility data by reducing the communication processing time, which is the problem. .

[0020]

The present invention for solving the above-mentioned object is based on the following means.

[0021]

1. In a data display device that displays equipment data representing the status of equipment in a format consisting of a plurality of columns and a plurality of stages, the equipment data is stored from equipment having equipment data storage means that stores equipment data representing the status of the equipment. Data input / output means for inputting / outputting, a character data array storage means for storing a plurality of character data arrays for items displayed on the screen, and a column for handling the equipment data in the column. Column definition data storage means including the number of columns, an address when reading from the equipment data storage means, an attribute of equipment data handled in the column, and display data array information for designating an array in the character data array storage means. And the required date to read
Data based on the attribute, the equipment data for the necessary data is read from the address of the equipment data storage means through the data input / output means, and if the equipment data is character data, the character The display means is characterized by displaying the character data corresponding to the facility data read through the data input / output means in accordance with the arrangement of the character data stored in the data array storage means.

[0023]

2. A data display method for displaying equipment data representing a state of equipment in a format composed of a plurality of columns and a plurality of stages, in which the equipment data is read in the columns.
The necessary data to be extracted is the equipment data handled in the column.
Obtained based on the attribute of the data, the equipment data for the obtained required data is read from the storage device of the equipment, the column direction coordinates for displaying the equipment data are obtained, and when the equipment data is a numerical value, The equipment data is displayed at the position represented by the row-direction coordinates and the column-direction coordinates of the display position, and when the equipment data is other than a numerical value, the offset in the array is obtained to reduce the deviation while An object to be displayed by the equipment data is displayed at a position represented by the row-direction coordinates and the column-direction coordinates.

[0025]

The data display device and the data display method of the present invention configured as described above operate as follows.

[0026]

1. This device is a device that displays equipment data representing the state of equipment in a format including a plurality of columns and a plurality of stages. This device reads equipment data by the data input / output means. The equipment data represents the state of the equipment and is stored in an external equipment data storage means.
Then, the apparatus stores a plurality of character data arrays for the items displayed on the screen. The device also stores column definition data. This column definition data is data for handling equipment data for each column. Specifically, the column definition data includes the number of columns, the address when reading from the facility data storage unit, the attribute of the facility data handled by the column (numeric value or character, etc.), and among multiple arrays of character data. Includes display data array information for specifying the array from. This device should read
Required data is included in the above column definition data.
Calculated based on the attribute (number or character) . And
The equipment data for the required data thus obtained is read from the address included in the column definition data via the data input / output means. When the equipment data is character data, the character data corresponding to the read required data of equipment data is displayed according to the stored character data array.

[0028]

2. In this method, in order to handle the equipment data in a column, the necessary data to be read is handled in the column.
Based on the attribute of the equipment data (numerical value or character, etc.)
Meru . Then, the equipment data for the obtained required data is read from the storage device of the equipment. Then, the column-direction coordinates for displaying the facility data are obtained, and when the facility data is a numerical value, the facility data is displayed at the position indicated by the row-direction coordinate and the column-direction coordinate of the display position. On the other hand, when the equipment data is other than a numerical value (object such as a character), the offset in the array is calculated and the deviation is reduced, and the equipment is placed at the position represented by the row-direction coordinates and the column-direction coordinates of the display position. Display the object to be displayed according to the data.

[0030]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The data display device and data display method of the present invention will be described below with reference to the accompanying drawings.

FIG. 1 is an embodiment of the present invention, and a character data array storage in which array data of items to be displayed such as power-off shown in FIG. 4 is stored in the apparatus of FIG. 16 described in the conventional example. There is a display data array 36 which is a means and column definition data 35 which is data such as column coordinates of facility data to be displayed shown in FIG.

This device operates as follows.

For example, in the object description performed by the display processing software 6, the same display contents are set as an array. This array object is PLC30
The display contents are determined in accordance with the bit array data or the word data (long word data) array in. Also,
In the example of the display shown in FIG. 2, the "state" columns correspond to their respective values according to the word data array of the sequencer. Extract the character string of the display data array 36 in advance,
Display in order. The first row of the "state" column is PLC
The value of DW020 in 30 is read, and the display data string 36 corresponding to the value is displayed and the character string "power on" is displayed.

The attributes of the column definition data 35 will be described. The bit array (binary) illustrated in FIG. 5 means whether the transmission of the data on the display screen of the corresponding equipment is completed or not completed. Further, the numerical array shown in FIG. 6 is an array of data on the display screen of the corresponding facility. Explaining with the example in FIG. 2, it means that the display of the equipment data of the equipment of # 10 is the first stage. The bit array (factor type) shown in FIG. 7 is data for setting the position where equipment data is displayed such as "power on" shown in FIG. The numerical value array shown in FIG. 8 is a serial number assigned to the equipment, and in the example of FIG. 2, the numerical value display of # 20 is 1237 in the second row.

Therefore, the present apparatus uses the display data array 3
6 and the column definition data 35 can handle the data in columns to reduce the amount of display objects, reduce the number of communications, and improve the display response. PLC30
Direct addressing of can reduce complex display sequences.

FIG. 9 is a flow chart of the method,
The required data length is obtained from the attribute in the column display definition data (S31). The necessary data is read from the PLC internal memory from the address of the column definition data (S32). Obtain the vertical coordinate for display (end of the next higher row + step spacing)
(S33). When displaying a numerical value (S34), the numerical value is displayed at the position represented by the horizontal and vertical coordinates of the display position (S35). When displaying a value other than the numerical value (S3
4) According to the column attribute, the offset in the display data array of the object to be displayed is calculated from the data read from the PLC 30 (S36). The object in the display data array is drawn at the position represented by the horizontal and vertical coordinates of the display position (S37). When all the equipment data have been displayed (S38), the process ends.

The present apparatus as described above can improve the display response by handling the data in columns by the display data array and the column definition data, thereby reducing the amount of display objects and the number of communications. Further, the present method can reduce the processing time associated with the input / output of the equipment data from the PLC by handling the equipment data in the horizontal and vertical coordinates, and at the same time, display the equipment data accurately at the display position. be able to.

[0038]

As described above, the data display device and the data display method of the present invention have the following effects.

[0039]

1 . Is the device of the present invention a data input / output means?
The column definition data storage
When the required data amount is calculated based on the attributes stored in the column
Both of the character data stored in the character data array storage means
According to the data array,
Since the corresponding character data is displayed , it is not necessary to read the equipment data one by one, and the equipment data is handled and displayed. Therefore, the processing time required for inputting and outputting the equipment data can be reduced.

[0041]

2. The method of the present invention, in order deals with the plant data in said column, the necessary data amount to be read, the
Obtained based on the attribute of the equipment data handled in the column, read the equipment data for the obtained required data from the storage device of the equipment, further, to obtain the column-direction coordinates for displaying the equipment data, the equipment data Is non-numeric,
Since the object to be displayed by the equipment data is displayed at the position indicated by the row-direction coordinates and the column-direction coordinates of the display position while obtaining the offset in the array and reducing the displacement, it is not necessary to read the equipment data one by one. It is possible to reduce the processing time associated with the input / output of facility data and reduce the character shift of the facility data.

[Brief description of drawings]

FIG. 1 is a block diagram illustrating a configuration of a data display device according to an embodiment of the present invention.

FIG. 2 is a diagram illustrating a display screen of a data display device according to an exemplary embodiment of the present invention.

FIG. 3 is a diagram illustrating column definition data of the data display device according to the embodiment of the present invention.

FIG. 4 is a diagram illustrating a display data array of a data display device according to an exemplary embodiment of the present invention.

FIG. 5 is a diagram illustrating a bit array (binary) of a data display device according to an exemplary embodiment of the present invention.

FIG. 6 is a diagram for explaining a numerical array of the data display device according to the embodiment of the present invention.

FIG. 7 is a diagram illustrating a bit array (factor type) of the data display device according to the exemplary embodiment of the present invention.

FIG. 8 is a diagram for explaining a numerical array of a data display device according to an embodiment of the present invention.

FIG. 9 is a flowchart illustrating a data display method according to an embodiment of the present invention.

FIG. 10 is a block diagram for explaining the configuration of a conventional data display device.

FIG. 11 is a diagram illustrating a display screen of a conventional data display device.

FIG. 12 is a diagram for explaining display parameters of a conventional data display device.

FIG. 13 is a diagram for explaining screen library data of a conventional data display device.

FIG. 14 is a flowchart illustrating control on the PLC side of a conventional data display device.

FIG. 15 is a flowchart illustrating control of a conventional data display device.

FIG. 16 is a block diagram for explaining the configuration of a conventional data display device.

FIG. 17 is a diagram illustrating a display screen of a conventional data display device.

FIG. 18 is a diagram for explaining display parameters of a conventional data display device.

FIG. 19 is a view for explaining screen library data of a conventional data display device.

FIG. 20 is a flowchart illustrating control of a conventional data display device.

[Explanation of symbols]

1, 20, 40 ... Data display device, 2, 30 ... PLC,
3 ... I / F memory unit, 4 ... Screen display library unit, 5 ...
Definition data section for screen, 6 ... Display processing software, 7 ... Display section, 8 ... Display parameter, 11 ... Internal memory section, 12 ...
Input / output memory unit, 13 ... Display PLC software, 31 ... Internal memory, 35 ... Column definition data, 36 ... Display data array.

Claims (2)

(57) [Claims] 1. A data display device for displaying equipment data representing the status of the equipment in a format composed of a plurality of columns and a plurality of stages, having equipment data storage means for storing the equipment data representing the status of the equipment. A data input / output unit for inputting / outputting the facility data from / to the device, a character data array storage unit in which a plurality of character data arrays for items displayed on the screen are stored, and the column handles the facility data. Therefore, it includes the number of columns of the column, the address when reading from the equipment data storage means, the attribute of the equipment data handled in the row, and the display data array information for designating the array in the character data array storage means. The column definition data storage means and the necessary data to be read out are obtained based on the attributes.
Then , the equipment data for the necessary data is read from the address of the equipment data storage means through the data input / output means, and when the equipment data is character data, it is stored in the character data array storage means. A data display device comprising display means for displaying character data corresponding to equipment data read out through the data input / output means in accordance with an arrangement of character data. 2. A data display method for displaying equipment data representing a state of equipment in a format composed of a plurality of columns and a plurality of stages, which must be read in order to handle the equipment data in the columns.
Based on the attribute of the equipment data handled in the column,
Then, the equipment data corresponding to the obtained required data is read from the storage device of the equipment, the column direction coordinates for displaying the equipment data are obtained, and if the equipment data is a numerical value, the row direction of the display position is displayed. The equipment data is displayed at the position represented by the coordinates and the column direction coordinates, and when the equipment data is other than a numerical value, the offset in the array is obtained, while the offset is reduced, the row direction coordinates of the display position and the A data display method, wherein an object to be displayed by the equipment data is displayed at a position represented by column-direction coordinates.