JPS62297919A - Display controller - Google Patents

Abstract

PURPOSE:To reduce the load of a CPU and to improve the responsibility of a display controller by performing the matching check of the set data through a display control part based on either one of plural matching check data. CONSTITUTION:An operator controls a keyboard 3 to set a certain kind of a data to a relevant screen. Thus a display control part 4 retrieves and designates a specific matching check data out of a set field control file 8 in response to the set field of the set data for execution of a matching check job. Then the designated check data is read out of a matching check data file 7 and the matching check is applied to the set data based on said check data. The set data if suited to the corresponding is sent to a CPU 5. While an error message, etc. are displayed on a CRT 2 via the part 4 if the set data is erroneous.

Description

Detailed Description of the Invention 3. Detailed Description of the Invention (Field of Industrial Application) The present invention relates to a display control device having a consistency check function for data set by an operator.

(Prior art and its problems) Conventionally, data set on a display device such as a CRT by an operator's keyboard operation has been checked using a program that unconditionally reports this setting data to the CPU and runs on the CPU. A common method is to determine in which setting field the data is set, and to determine whether the data is appropriate by performing a consistency check according to the setting field.

As a result of this consistency check, if it is determined that the setting data is error data, an error message or the like is displayed on the display device based on a command from the CPU'U.

However, according to this method, signals need to be exchanged twice between the CPU and the display device for one data setting error, resulting in an increased load on the CPU and poor responsiveness.

The present invention has been proposed to solve the above problems, and its purpose is to perform a check based on any one of a plurality of pre-prepared validation data, regardless of the program on the CPU. An object of the present invention is to provide a display control device that reduces the load on a CPU and improves responsiveness by checking the consistency of setting data in a display control section.

(Means for Solving the Problems) In order to achieve the above object, the present invention provides a display control device connected to a CPU and configured to display setting data from an input device on a display main body.
U, a display control unit connected to the input device and the display main body, a display data file that stores display data received from the CPU, and a consistency check data file that stores consistency check data received from the CPU; It is equipped with a setting field management file that stores setting field management information that specifies data for consistency check according to the setting field of the setting data, and a setting field management file that stores setting field management information that specifies data for consistency check according to the setting field of the setting data. The CPU is characterized in that only the normal setting data that has been checked is notified to the CPU via the display control unit.

(Operation) The display control section extracts the corresponding screen data from the display data file based on a display request from the CPU and displays it on the display main body. When data is set by the operator for this screen, the display control unit specifies the consistency check data that will be the standard for consistency check from the setting field management file according to the setting field, and makes settings based on this consistency check data. Data consistency check is performed, and if the setting data is normal, the CPU is notified, and if it is error data, an error message or the like is displayed via the display main body.

(Example) An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 is a block diagram showing the configuration of a display control device 1 according to the present invention, and the display control unit @1 includes a display control unit 4 connected to a CRT 2 as a display main body and a keyboard 3 as an input device. There is.

A CPTJ 5 is connected to this display control unit 4, and a display data file 6 that stores display data sent from the CPU 5 and a matching data file 6 that stores a plurality of consistency check data sent from the same CPU 5. A setting field management file 8 that stores setting field management information for establishing a correspondence between setting fields of setting data and data for consistency checking based on the check data file 7, display data, and consistency check data.
are provided for each.

Next, this operation will be explained according to the flowchart shown in FIG. First, the display data and the consistency check data are stored in advance in the display data file 6 and the consistency check data file 7 at the timing of the initial program loading of the CPU 5 or the like. Now, CP
When there is a request from U5 to display a certain screen, the display control unit 4 extracts data for the corresponding screen from the display data file 6 and causes the CRT 2 to display it.

The functions of the display control section 4 are the same as those of the prior art.

Next, if the operator operates the keyboard 3 to set certain data for this screen, the display control unit 4 will respond to the setting field of the setting data, as shown in step S1 of FIG. The setting field management file 8 is searched for and specified which consistency check data is to be used for the consistency check. Next, in step S2, the designated data for consistency check is read from the data file 7 for consistency check, and the consistency check of the setting data is performed based on this data. Then, the result of the consistency check is determined in step S3, and if the setting data is suitable for the screen, the setting data is sent to the CPTJ 5 in step S4. Conversely, if the setting data is error data, the display control unit 4 displays an error message etc. on the CRT 2 in step S5.
This is shown above.

Note that if the consistency check of the setting data is performed on a data digit basis, it is possible to check non-continuous numerical values.

(Effects of the Invention) As detailed above, the present invention does not perform a consistency check of setting data by a program running on the CPU,
Since this is done by the display control unit, it is possible to reduce the load on the CPU by eliminating the need to send error data as is to the CPU, as was the case in the past. As this is not necessary, responsiveness can be improved.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing an embodiment of the present invention, and FIG. 2 is a flowchart for checking the consistency of setting data. 1...Display control device 2...CRT 3...Keyboard 4...Display control section 5...CPU6...
・Display data file 7... Consistency check data file 8... Setting field management file Patent applicant: Fuji Electric Co., Ltd. (1 other person)

Claims (1)

[Scope of Claims] A display control device connected to a CPU and configured to display setting data from an input device on a display main body, comprising: a display control unit connected to the CPU, the input device, and the display main body; a display data file storing display data received from the C.
This configuration includes a validation data file that stores validation data received from the PU, and a configuration field management file that stores configuration field management information that specifies validation data that corresponds to the configuration field of configuration data. A display control device characterized in that only normal setting data checked by the display control unit based on consistency check data specified in a field management file is notified to the CPU via the display control unit.