JPH1011114A - Storage area setting device for program controller - Google Patents

Abstract

PROBLEM TO BE SOLVED: To optionally and simply secure a storage area for set values to be used for pattern control to be executed by a program controller. SOLUTION: A setting part 1 sets up the number of control patterns necessary for pattern control and the number of sections forming respective control patterns. A selection verifying part 3 receives a verification input which is preferentially set up, the number of control patterns or the number of sections. A storage part 9 has plural storage segments for storing the set values and others. An area control part 7 divides the whole storage segments by the number of control patterns e.g. of which setting is preferentially specified, allocates areas to the divided segment groups and automatically calculates the number of sections in each control parttern to secure the storage segment area.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a storage area setting device for a program controller, and more particularly to an improved arrangement of a storage area for setting values such as target values and control constants used when operating the program controller. The present invention relates to a storage area setting device.

[0002]

2. Description of the Related Art A program controller generally adjusts the temperature of an electric high-temperature furnace or the like according to a preset program. For example, as shown in FIG. 4, a control pattern for controlling a control target is divided into a plurality of sections. And each of them is referred to as a segment (1) to (6).
(6) The set values (control data) such as the segment identification code, control time, and control constant corresponding to... Are stored in the storage unit in advance, and the segments (1) to (6) of the selected control pattern are stored. .., The corresponding set value is read from the storage unit, and PID calculation processing is performed using the set value and the measured value PV from the control target to output the manipulated variable MV to the control target.

Accordingly, the control target is added with the operation amount MV in the order of the preset segments (1) to (6).
The program is adjusted at a set level according to the selected control pattern. When the control target is program-adjusted by a plurality of different control patterns, each of the segments (1) to (6) which form the control object for each control pattern is formed.
Are stored in the storage unit, and by switching the control patterns, the corresponding set values are read out and adjusted by the program.

[0004] Individual control pattern segments (1) to
(6)..., As set values, for example, as shown in FIG. 5, target values SV1, SV2,.
..., integral constants I1, I2 ... and differential constants D1, D2
..., there is a target value SV1, a proportional constant P1, an integral constant I
1 and the differential constant D1 form a set value for one set of storage segments.
.., Proportional constants P1, P2,..., Integral constants I1, I2,..., Differential constants D1, D2,.

That is, when the set value of the control pattern indicated by the solid line in FIG. 4 is as shown in FIG. 5, the set value having a different value is stored in another control pattern indicated by the one-dot chain line in FIG. Stored in the department. Conventionally, in such a programmed controller, when setting values of segments (1) to (6)... Corresponding to a plurality of control patterns are stored in a storage unit, the number of control patterns and the number of segments in each control pattern (Or the number of sections and the length of the control pattern), a storage area of the storage unit is reserved in advance, and a set value with a segment identification code is stored in the area.

For example, when the number of storage segments in the storage section is 256 in total and it is necessary to secure four control patterns having 64 sections of storage segments, the operator preliminarily sets 64 storage segments in the storage section. The configuration is such that the set values are stored after four groups of storage areas are secured.

[0007]

However, in the storage area setting apparatus described above, from the user side of the program controller, only the number of target control patterns needs to be set, and the number of controllable storage segments is sufficient. In some use cases, it is sufficient to ensure that In this case, it is important to set the number of control patterns, and there is no need to set the number of storage segments, which forces the user to perform unnecessary operations such as setting the number of storage segments, thereby improving operability and simplifying operation. There is still room for improvement from the viewpoint of avoiding erroneous settings.

Conversely, in some applications, the setting of the number of storage segments is important and the setting of the number of control patterns is substantially unnecessary, and similarly, the user is forced to perform unnecessary operations. The present invention has been made under such circumstances, and in a program controller, it is possible to easily and arbitrarily secure a storage area for a set value stored and set in advance, and to set a storage area that can be adapted to various use modes. The purpose is to provide the device.

[0009]

SUMMARY OF THE INVENTION In order to solve such a problem, the present invention provides a method in which a set value stored in advance for a plurality of sections continuous at an arbitrary time interval and stored in advance with the passage of time. A program area controller for sequentially controlling the pattern to be controlled by sequentially switching the control pattern, and a storage area setting device for presetting a storage area of a set value corresponding to the control pattern, wherein the number of control patterns and the number of sections of each control pattern are set. A setting unit to be set; a storage unit having a plurality of storage segments and storing the set values of the control patterns in each of the storage segments in association with the storage segments; and storing the number of control patterns or the number of sections set by the setting unit. And a region control unit for automatically allocating, calculating, and setting the number of sections or the number of control patterns while dividing the storage segment of the unit.

Further, according to the present invention, it is possible to provide a selection confirming unit for confirming which one of the number of control patterns set by the setting unit or the number of sections for each control pattern is preferentially set.

[0011]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a block diagram showing one embodiment of a storage area setting device in a program controller according to the present invention.

The setting section 1 is an input means such as a keyboard disposed on an operation panel of a program controller (not shown), and forms the number of control patterns necessary for pattern control of the program controller and their respective control patterns. The number of sections is manually set from the outside and a confirmation input described later is received. The section is connected to the selection confirmation unit 3. The setting unit 1 sets data necessary for operation of the program controller, in addition to the number of control patterns and the number of sections, and set values stored in a plurality of storage segments forming the storage unit 9 described later. In addition to the keyboard
It can also be formed by communication setting means via communication means from a remotely located control device (not shown).

The selection confirming unit 3 confirms and displays on the display unit 5 the attention of the operator as to which of the number of control patterns or the number of sections forming the individual control patterns is preferentially set. It has a function and receives a confirmation input from the setting unit 1, and is connected to the area control unit 7. The selection confirmation unit 3 has a function of selectively outputting the confirmed number of control patterns or the number of sections to the area control unit 7 when receiving the confirmation input of the priority setting from the setting unit 1.

The storage unit 9 includes a conventionally known readable and writable storage means, for example, a semiconductor memory, a floppy disk,
It is formed of a hard disk and a magnetic card, has many storage segments, and is connected to the area control unit 7. In this storage section 9, various setting values are stored in each storage segment after an area for allocating the number of control patterns and the number of sections forming each control pattern is secured in advance.

The area control section 7 confirms the total number of storage segments in the storage section 9 and divides the entire storage segment based on the number of control patterns or sections instructed by the selection confirmation section 3 to divide the area. And assign
It has a function of automatically calculating the number of sections or control patterns based on the number of control patterns or sections assigned with priority, and securing and setting an area.

For example, as shown in FIG. 2, the area control section 7 confirms that the number of storage segments in the storage section 9 is 256, and the priority setting instruction is the number of control patterns, and this number is one. In some cases, the entire storage segment of the storage unit 9 is divided into one group to secure 256 storage segment areas (sections). When the number of control patterns is 16, the entire storage segment is divided into 16 groups and divided into 16 groups.
When the number of control patterns is 64, the entire storage segments are divided into 64 groups and four storage segment areas (for sections) are secured.
It has the function of securing and setting.

Since it is necessary to secure an area by dividing the storage segment in the storage unit 9 by an integer, it goes without saying that the storage segment may be left depending on the number of control patterns. Furthermore, when the entire storage segments of the storage unit 9 are secured in one group, 16 groups, and 64 groups, an arbitrary storage segment can be set up to 256 sections, 16 sections, and 4 sections at the maximum. Number (for the section) can be secured, and the area control unit 7
Depends on the functions provided by

The area control section 7 also has a function of dividing a storage segment in the storage section 9 to secure an area, and then performing read / write control of a set value in the storage segment for each control pattern. When the priority setting instruction is the number of sections for each control pattern, the area control unit 7 divides the plurality of storage segments of the storage unit 9 by the specified number of sections and sets the control pattern including the divided number of sections. Has a function of automatically calculating the number of control patterns for each group to secure an area.

The display section 5 is a conventionally known display means.
For example, it is a CRT display device, a liquid crystal display device, or a plasma display device, which is generally disposed on, for example, an operation panel of a program controller and also serves as a display device of the program controller.

Such a storage area setting device according to the present invention includes a CPU (not shown), a ROM having a built-in operation program for the CPU, a RAM for storing a calculation process and a calculation result of the CPU, and an I / O as an interface. It is constituted by a so-called microcomputer having O. Therefore, the operation when the storage area setting device of the present invention is constituted by a microcomputer will be briefly described with reference to the flowchart of FIG.

When the operation program shown in FIG. 3 is started, the number of control patterns is input in step 100, and it is determined in step 101 whether or not the number of control patterns is within a settable range. If it is out of the range because of too much, step 101 becomes NO and step 1
Returning to 00, this processing is repeated until step 101 becomes YES.

If step 101 is YES, the maximum number of storage segments forming a control pattern is automatically calculated and set based on the number of control patterns in step 102, and in step 103, setting for each section in each control pattern A value is entered and the process ends. In the configuration in which the number of sections is preferentially set, step 100 in FIG. 3 is changed to input of the number of sections, and the calculation processing in step 102 is changed to processing to calculate the number of control patterns.

As described above, in the storage area setting device according to the present invention, the setting unit 1 for setting the number of control patterns and the number of sections.
And a storage unit 9 for storing a plurality of storage segments forming a control pattern in association with set values for each section.
And an area control unit 7 that divides the storage segment of the storage unit 9 with the set number of control patterns or sections and automatically secures and sets the number of sections or control patterns. It is not necessary to secure a fixed area for the storage segment in the storage unit 9 for both the number of sections, and the setting can be made by setting one of the number of control patterns and the number of sections.

Therefore, as long as the number of storage segments in the storage unit 9 is within the allowable range, the operator can secure an arbitrary area for the number of control patterns or the number of sections, and can adapt to various usage modes. However, since one of the number of control patterns or the number of sections may be set with priority, the securing operation is simple and erroneous operation can be avoided. Further, in the above-described configuration, the selection confirmation unit 3 for confirming which of the number of control patterns or the number of sections set by the setting unit 1 is to be preferentially set is provided. It is possible to select which of the areas is to be secured with priority, and the reliability of securing the area is enhanced.

However, in the present invention, the selection confirmation unit 3
Is not indispensable, and a configuration in which the setting unit 1 is directly connected to the area control unit 7 as shown by a broken line in FIG. 1 is also possible. The object of the present invention can be achieved even if the area control unit 7 is formed so as to secure an area of 9 storage segments. Generally, it may be preferable to give priority to setting the number of control patterns.

[0026]

As described above, the storage area setting device of the present invention sets and inputs the number of control patterns and the number of sections of each control pattern from the setting section, and stores the number of areas in the storage section having a plurality of storage segments. The control section divides the storage segment of the storage section by the number of control patterns or sections set as input and automatically calculates the number of sections or control patterns to secure an area. By setting either the number of control patterns or the number of sections, the storage area of the set value can be arbitrarily and freely secured, it can be applied to various use modes, the use range is expanded, and the operation is easy and erroneous operation is possible. Less. In addition, in the configuration in which the selection confirmation unit that confirms which of the number of control patterns or the number of sections set by the setting unit is preferentially set is selected, the selection of the number of control patterns or the number of sections is confirmed. Highly secure area can be secured.

[Brief description of the drawings]

FIG. 1 is a block diagram showing one embodiment of a storage area setting device according to the present invention.

FIG. 2 is a diagram showing the correspondence between the number of control patterns stored according to the present invention and the number of sections forming the control patterns.

FIG. 3 is a flowchart showing an operation of the storage area setting device of FIG. 1;

FIG. 4 is a diagram showing an example of a control pattern implemented by a program controller.

FIG. 5 is a diagram showing a correspondence relationship between each section and a set value in a control pattern.

[Explanation of symbols]

 1 setting section 3 selection confirmation section 5 display section 7 area control section 9 storage section

Claims (2)

[Claims] 1. A program controller for pattern-controlling a control target by sequentially switching the preset values stored in advance in a plurality of sections at an arbitrary time interval as time passes. A storage area setting device that sets a storage area of the set value corresponding to a control pattern, comprising: a setting unit that sets the number of sections of the control pattern and the number of sections in each of the control patterns; A storage unit that stores the set value of each section of the control pattern in association with each storage segment, and that the storage segment of the storage unit is divided and set according to the number of control patterns or the number of sections set by the setting unit. A region control unit for automatically calculating and setting the number of sections or the number of control patterns; and a storage region in the program controller. Constant apparatus. 2. The storage area setting in the program controller according to claim 1, further comprising a selection confirmation unit for confirming which one of the number of control patterns or the number of sections set by the setting unit is preferentially set. apparatus.