JPH02259804A - Program controller and its setting method - Google Patents

Abstract

PURPOSE:To comprehensively and easily perform a series of setting with respect to a program pattern by providing a display part to display the start control value and the end control value of the present step simultaneously. CONSTITUTION:The display part 6 displays the initial control value and the final control value of the present step in the program pattern 2a simultaneously, and the final value of a preceding step is displayed as the initial control value of the present step. When each parameter in the program pattern is set, a start condition to progress the program pattern to an area before the initial step of the program pattern is set. Also, a condition to link the program pattern to the forefront of another program pattern is set at the area behind the final step. In such a way, it is possible to perform the setting of the present step as confirming a preceding final state visually, and to comprehensively and easily perform a series of setting with respect to the program pattern.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application J] The present invention relates to a program control device, such as a controller, which processes signals based on a preset program pattern, and a setting method thereof.

[Prior art J] Taking a controller as an example, the controller uses a thermocouple (in addition to a resistance temperature detector, a DC voltage
The temperature is adjusted according to the program pattern so that the deviation is small by comparing the input value from the current (current, etc.) with the target value of the program pattern that indicates the change in the control amount (for example, temperature, humidity, pressure, etc.) over a preset time. It tracks and controls phenomena such as , humidity, and pressure.

Further, to explain the setting procedure necessary for carrying out the above-mentioned program control, the user first selects a program pattern to be used for control using a plurality of operation keys provided on the front of the device. When this program pattern is selected, the control time and control amount parameters for each step of the program pattern are set by operating the key 10 as shown in FIG. 7(a).

Here, the first step includes start conditions, that is, conditions for starting the program from the middle of the program pattern (program start), and conditions for starting the program after advancing time to a certain target value on the program pattern (Pv start). If no conditions are set, normally O
It will start from.

When the parameter settings up to the last step are completed as described above, the user inputs END from the setting keys 10 to complete the setting of one program pattern. When the settings for one program pattern are completed in this way, the number of remaining steps that can be set is displayed, and the user can check the number of remaining steps and determine the steps for the next program pattern. I was making settings.

Furthermore, when controlling another program pattern by linking it to a program pattern that has been set as described above, the pattern to be linked is set using parameter keys on a dedicated screen.

[Problems to be Solved by the Invention] However, in the conventional controller described above, when setting the parameters for each step of the program pattern, the first step as shown in FIGS. After completing the settings, when moving to the next step, the parameters set in the previous step will disappear, so the user must memorize the parameters and make the next settings. This places a burden on the user and may lead to incorrect settings. Further, there is a problem in that extra steps are consumed in order to start a program or start a PV. Furthermore, when linking one program pattern to another program pattern, settings must be made on a dedicated screen, which is time consuming and inefficient. In addition, the number of remaining steps that can be set is displayed when the setting of one program pattern is completed and the END key is pressed, so when setting steps in small increments, you can check how many steps are left. It was difficult to judge.

Therefore, the present invention has been made in view of the above-mentioned problems, and its purpose is to avoid consuming unnecessary steps (and reduce the burden on the user), and to avoid consuming a series of steps related to program patterns. An object of the present invention is to provide a program control device that allows settings to be easily made all at once.

[Means for Solving Problem 1] In order to achieve the above object, the program control device according to the present invention shows changes in the control amount over one hour and processes signals based on a program pattern consisting of a plurality of steps. A program control device that performs the above, comprising a display unit that simultaneously displays a starting control value and a final control value of the current step in the program pattern,
It is characterized in that the final control value of the previous step is displayed as the initial control value of the current step.

Furthermore, when setting each parameter in a program pattern, a start condition for advancing the program button is set in an area before the first step of the program pattern.

Furthermore, when setting each parameter in a program pattern, a condition for linking the program pattern to the beginning of another program pattern is set in an area after the last step of the program pattern.

Further, the present invention is characterized in that the number of remaining steps is displayed each time the setting of each step of the program pattern is completed.

[Operation] The display section simultaneously displays the initial control value and final control value of the current step in the program pattern, and the final control value of the previous step is displayed as the initial control value of the current step. Furthermore, when setting each parameter in the program pattern, a start condition for advancing the program pattern is set in an area before the first step of the program pattern. Also, at this time, in the area after the last step of the program pattern,
Conditions are set for linking a program pattern to the beginning of another program pattern. Furthermore, the number of remaining steps is displayed each time the setting of each step of the program pattern is completed.

[Embodiment] FIG. 1 is a block diagram showing an embodiment of a program control device according to the present invention.

The program control device using a microcomputer or the like according to this embodiment can control the temperature of a controlled system such as an electric furnace, for example.
It is applied to a controller that controls phenomena such as humidity and pressure, and includes a setting section 1, a storage section 2, a program drive section 3, a deviation calculation section 4, a P, ID calculation section 5, and a display section 6. It is roughly structured.

The setting section 1 includes a plurality of operation keys 1 provided on the front side of the device 7.
By operating this key 1a, you can select the program pattern 2a, control amount and control time for each step of the program pattern 2a, start conditions, end conditions, PID constants, etc., and change the program such as starting and stopping the operation. Various settings related to the control of pattern 2a are made.

The storage unit 2 stores a plurality of types of program patterns 2a showing changes in control amounts over time for controlling phenomena such as temperature, humidity, pressure, etc. of a controlled system. Each program pattern 2a is composed of several steps S (S, ~S,) as shown in FIG. It has become. In addition, this storage unit 2
The detailed settings for each step S of the program pattern 2a selected based on the operation of the key 1a in the setting section l (for example, the control time and control amount of each step 81 to s7, start condition, end condition, PID constant, Parameter 2 for controlling upper and lower limit values of control output, V reporting, etc.)
b is stored.

By the way, in step S, l before step S, which is the first area in each program pattern 2a, the above-mentioned program start and PV start data indicating in which state the program pattern 2a is to proceed is stored as a start condition. The setting is made and stored by operating the key 1a of the setting section 1. moreover,
To explain this setting method, when the display screen as shown in Fig. 3 is displayed, program start and P
v start data, as shown in Figure 4 (a) and (b), for example, if you want to start from 100 as a program start, input rloOJ, and if you want to start PV, use key 1a to UP/DOWN the numerical value. and set it to rPVJ.

Furthermore, after the final step ST of each program pattern 2a, as an end condition, the program pattern 2a
Data specifying the link destination to which other program pattern is to be connected and controlled is set and stored. Note that data for controlling the list price of the program pattern 2a at the final target value can also be set in this end condition. That is, like the start condition, this end condition is also performed by operating the key 1a in the setting section 1. Specifically, as shown in FIG. 5(a), the control time TM item on the display screen is Then, manually enter the number (for example, 3) of the program pattern 2a to be linked. In addition, when controlling the program pattern 2a with the fixed price, as shown in FIG. 5(b)
As shown in , the planting conditions, e.g. r
Enter cONsJ. Further, when the control is to be stopped, O is set after END as shown in FIG. 5(C).

The deviation calculation unit 4 is set by the measured value from the controlled system and the operation of the key 1a in the setting unit l, and the program drive unit 3
The deviation is determined by comparing the level with the target value on the program pattern 2a outputted from the program pattern 2a, and the deviation signal obtained as a result is outputted to the PID calculation section 5.

Pt1) f@arithmetic unit 5 Deviation signal from deviation calculation unit 4 is P
The ID is calculated and output to the outside, and the phenomenon in the controlled system is controlled based on this output signal.

The display unit 6 displays the set program pattern 2, including the control amount and control time for each step S when performing various settings related to the program pattern 2a by the setting unit l.
The progress status of step a, other parameters such as PID constants, and the number of remaining steps (not shown) are displayed as shown in FIG. 3 based on commands from the program drive section 3.

Next, the setting operation of the program control device configured as described above will be explained based on the flowchart shown in FIG.

First, program pattern 2a is selected by operating key 1a in setting section 1 (STI).

Next, program start and Pv start values as start conditions are set in step S0 of the selected pattern 2a (Sr1).

For example, when starting the program at a temperature of 100° C., input rloOJ by operating the key 1a as shown in FIG. 4(a). After setting this start condition (Sr1), next the control amount at each step S,
Setting parameters such as control time (Sr4), that is, when controlling for 5 hours up to 200°C as shown in Figure 4 (C), set r2 in the final control amount item SVt.
Set 00J and control time item TM as r5:OOJ by key operation. At this time, when setting the next step, the control amount Sv of the previous step is displayed (Sr5). This allows the user to set the current step while visually checking the previous final state. Therefore, accurate settings can be made at all times without the risk of erroneous settings regarding the rise or fall of the set temperature. Two or more operations are performed for each step S up to the final step. At this time, each time the setting of one step is completed, the remaining steps are displayed (Sr6). Therefore, when you finish setting each step S, you can visually check the number of remaining steps, so you can always check the margin of step S and make the next setting. Sr7), Set the link destination specified data or the final control condition as the end condition (Sr8). For example, when linking to the third program pattern as shown in Figure 5 (a), the control time Set rEND: 3J in item TM. As a result, when all setting operations are completed, the controlled system can be controlled according to the program pattern 2a in which this setting was performed (Sr1).

Therefore, the control amount and control time of each step S for the program pattern 2a explained above, the start condition,
Each end condition setting is performed using the same key 1 on the same display screen.
This reduces the burden on the user without requiring parameter keys on a dedicated screen as in the past, and even those who are unfamiliar with the device can easily operate the device. Various settings can be done all at once.

By the way, in the above-mentioned embodiment, the case where the present invention is applied to a controller has been explained as an example, but the present invention may also be used, for example, in a setting device constituted by the portion surrounded by a dashed line in FIG. 1.

[Effects of the Invention] As explained above, according to the program control device and the setting method thereof according to the present invention, there is no need for unnecessary steps unlike in the past, and there is no need for parameter keys on a dedicated screen. The burden placed on the user can be reduced, and a series of settings related to program patterns can be easily performed all at once.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing an embodiment of a program control device according to the present invention, and FIG. 2 is a diagram showing an example of a program pattern for controlling a controlled system in the same device.
Figure 3 is a front view of the device, and Figures 4(a) and 4(b) are diagrams showing display states at various program pattern settings.
4(c) is a diagram showing an example of the display state when setting the start condition by the device, FIG. 4(c) is a diagram showing an example of the display state when setting the start condition in an intermediate step, and FIG. 5(a) is a diagram showing an example of the display state when setting the start condition. (b) and (c) are diagrams showing an example of display states when end conditions are set by the same device, FIG. 6 is a flowchart diagram for explaining the setting operation by the same device, and FIGS. 7 (a) to (
c) is a diagram showing various parameter setting operations performed by a conventional program control device. DESCRIPTION OF SYMBOLS 1... Setting section, 2... Storage section, 3... Program drive section, 6-... Display section.

Claims (4)

[Claims] (1) In a program control device that indicates a change in a control amount over time and processes signals based on a program pattern consisting of a plurality of steps, the control value at the beginning of the current step and the final control value in the program pattern Equipped with a display section that simultaneously displays
A program control device characterized in that a final control value of a previous step is displayed as a starting control value of a current step. (2) In a program control device that processes signals based on a program pattern that shows changes in a control amount over time and is composed of a plurality of steps, when setting each parameter in the program pattern, A setting method for a program control device, characterized in that a start condition for proceeding with the program pattern is set in an area before a step. (3) In a program control device that processes signals based on a program pattern that indicates a change in a control amount with respect to time and is composed of a plurality of steps, when setting each parameter in the program pattern, the last A setting method for a program control device, characterized in that a condition for linking the program pattern to the beginning of another program pattern is set in an area after a step. (4) In a program control device that indicates a change in a control amount with respect to time and processes signals based on a program pattern consisting of a plurality of steps, the number of remaining steps is calculated every time the setting of each step of the program pattern is completed. A program control device characterized by being configured to display.