JP2660603B2 - Control program parameter setting method - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a method for setting various parameters in a control program.

[Conventional technology]

A control program, which is software for performing arithmetic control in a digital control device, is generally configured using a special language suitable for instrumentation control instead of a general-purpose computer language. Programming of such a control application program is performed using a dedicated programming tool having a display unit composed of a CRT and an input unit composed of a keyboard and a mouse in the arithmetic processing unit body. In the programming system for programming the control program using the above-described dedicated language, when programming the arithmetic control circuit, a figure showing a control module such as a primary delay controller or a PID controller is used. Displaying a large number of menu screens on the display unit, selecting necessary control modules from these figures and displaying them at desired positions on the screen of the display unit, and a control circuit combining these control modules. There is a programming system that can automatically create a control program corresponding to this control circuit diagram when a diagram is drawn on a screen.

In such a programming system, parameters such as a gain and a time constant cannot be set in advance in the programmed control module. Therefore, during or after programming, the screen for programming is switched to the screen for parameter setting. Parameters were set using the screen.

FIG. 4 is a schematic view of a display screen for setting the parameters. This display screen is a parameter that associates a module number column A representing a control module number corresponding to the control module number indicated in the control program with a control column name, a setting parameter name, and a setting column B in which the numerical value is to be entered. This is a display of a setting table. When setting the parameters, such a parameter setting table is displayed, and the parameters of each control module are set by writing the parameters of the control module corresponding to the control module number in the circuit diagram in the setting column B. .

[Problems to be solved by the invention]

However, in the conventional parameter setting method as described above, the control program programming screen is different from the control module parameter setting screen, so that a plurality of control modules of the same type exist in the control program. Then, there is a possibility that the control module to be set is easily mistaken, and an inappropriate parameter value is set in the control module.

The present invention has been made in view of the above circumstances, and a parameter of a control program that enables accurate setting of a parameter of a control module when a plurality of control modules of the same type exist in the control program. The purpose is to provide a setting method.

[Means for solving the problem]

A parameter setting method of a control program according to the present invention combines a control module having various control functions with the display unit of a programming tool including a display unit for displaying an image and an input unit for inputting various data. A control program for performing control corresponding to the function of the circuit diagram is created by creating a circuit diagram including the following on the display unit by data input from the input unit, and parameters representing characteristics of the control module are set. A parameter setting method for a control program, wherein a parameter setting table is displayed on the display unit, and the parameter setting table is used to set parameter values of a control module in the control program by writing numerical values of parameters by data input from the input unit. , Select from the control modules in the circuit diagram displayed on the display unit. To display the parameter setting table in the vicinity of the specified control module, and performs setting of the parameter at this parameter table.

[Action]

In the present invention, a parameter setting table is displayed near the control module selected and designated from the control module in the circuit diagram, and the parameter setting table is displayed in the circuit diagram. The parameters of the control module can be set while checking the circuit diagram of the setting target.

〔Example〕

Hereinafter, the present invention will be described in detail with reference to the drawings showing the embodiments. FIG. 1 is a schematic block diagram showing a configuration of a programming tool applied to the implementation of a control program parameter setting method according to the present invention.

In the figure, reference numeral 1 denotes a programming tool main body having a CPU. The programming tool main body includes a first input unit 21 composed of a mouse for performing position input and a second input unit composed of a keyboard.
The input unit 22 and the display unit 3 including a CRT are connected to each other.

Next, a description will be given of a method of programming a control program for performing arithmetic control in a digital control device by using the thus configured device.

The digital control device is used as a control device for controlling a process such as Plato. Such a digital controller collects, at predetermined intervals, detection information of various detectors that are disposed on Plato and detect the state of each part of the plant, such as pressure and temperature, and based on the collected result data, In order to maintain a predetermined value, a calculation for calculating an appropriate operation amount of the hardware device provided in the plant is performed, and a control signal is given to the hardware device. The control program is a program for performing arithmetic control in such a digital control device, and is a software program of a control circuit formed by combining a plurality of control modules for controlling the hardware devices.

FIG. 2 is a schematic diagram showing an image displayed when programming the control program. When a control program is programmed, a desired control circuit is created by combining control modules 4, 4... Such as a primary delay controller and a PID controller and displaying them on an image on the display unit 3. A corresponding control program is automatically programmed. In inputting the control modules 4, 4,... To the screen of the display unit 3, a menu screen (not shown) in which a number of control modules 4, 4,. And display. .. Are selectively designated on the screen by operating the first input unit 21 from the menu screen. When the control modules 4, 4... Are designated, the screen is switched to the programming screen as described above. When a desired position on the switched programming screen is designated by operating the first input unit 21, the screen is switched. The control modules 4, 4,... Are displayed at the desired positions. And
By repeating the designation of the control modules 4, 4,..., A desired control circuit is created. However, at this stage, parameters such as gain and time constant of the control modules 4, 4,... Are not set.

Next, a method of setting the parameters of the control modules 4, 4,... In the control program created as described above will be described.

FIG. 3 is a schematic diagram showing an image displayed when setting parameters of a control module in a control program.

In the figure, reference numeral 5 denotes a parameter setting table for setting parameters of the control modules 4, 4,..., And the parameter setting table 5 includes a time constant T, a gain G of the control modules 4, 4,.
The parameter can be set by writing the numerical value of the parameter beside the parameter name such as. When the position of a desired control module 4, 4,... Is specified on the programming screen by operating the first input unit 21, the parameter setting table 5 is displayed near the specified control module 4, 4,. Is to appear.
Then, when the parameter setting table 5 is displayed, the numerical value of each parameter is input into the parameter setting table 5 using the second input unit 22. The input numerical value becomes the set value of the parameter.

When such setting of the parameters is sequentially performed for each of the control modules 4, 4,... Displayed on the programming screen, the parameters of these control modules 4, 4,... Are set in the control program.

〔The invention's effect〕

As described above in detail, in the present invention, a parameter setting table is displayed near a control module selected and designated from the control modules in the circuit diagram, and the setting target of the parameter setting is represented by a circuit diagram. Control module parameters can be set while checking, so it is possible to accurately set control module parameters when there are multiple control modules of the same type in the control program Thus, the present invention has excellent effects.

[Brief description of the drawings]

FIG. 1 is a schematic block diagram showing the configuration of a terminal applied to the method for setting a parameter of a control program according to the present invention. FIG. 2 is a schematic diagram showing an image displayed when programming the control program. FIG. 3 is a schematic diagram showing an image displayed when setting parameters of a control module in a control program, and FIG. 4 is a schematic diagram of an input screen for setting the parameters. 1 ... programming tool body, 3 ... display unit 4 ... control module, 5 ... parameter setting table 21 ... first input unit, 22 ... second input unit In the drawings, the same reference numerals are the same, or The corresponding parts are shown.

Claims (1)

(57) [Claims] 1. A circuit diagram in which a control module having various control functions is combined with the display unit of a programming tool having a display unit for displaying an image and an input unit for inputting various data. By creating a control program for performing control corresponding to the function of the circuit diagram by creating on the display unit by data input from the unit, a parameter setting table for setting parameters representing characteristics of the control module is displayed on the display unit. In the parameter setting method of the control program for setting the parameter of the control module in the control program by writing the numerical value of the parameter by the data input from the input unit to the parameter setting table, the display on the display unit Parameter near the control module selected and specified from the control modules in the A parameter setting method for a control program, wherein a parameter setting table is displayed, and the parameters are set in the parameter setting table.