JPS6132105A - Program setting device - Google Patents

Abstract

PURPOSE:To simplify the comparison operation and to speed up it by comparing sequentially an elapsed time and a designated time stored as to each on/off control signal in a program setting device generating plural on/off control signal in matching with the progress of a control pattern. CONSTITUTION:In inputting a time, gradiend and level of each segment as a decisive parameter of the control pattern from a key input device 7, they are stored in a RAM 4 by a CPU 2 and then a contrl data of an on/off signal Sn is stored similarly in the RAM 4. Thus, the CPU 2 executes the program in a ROM 3. When a start command is inputted, the CPU 2 starts the execution of a control pattern generating program in the ROM 3, calculates sequentially the control pattern data according to the parameter and outputs the result to a display device 8 and a D/A converter 9. During the execution of the control pattern generating processing, if an interruption takes place, the CPU 2 interrupts the control pattern generating processing, executes the program of an on/off signal generating processing in the ROM 3 and when it is finished, the interrupted control pattern generating processing is restarted. Then the control data and a data (time) to be compared with it are reduced.

Description

[Detailed Description of the Invention] <Industrial Application Field> The present invention relates to a program setting device for setting a program for control patterns of the temperature of a heat treatment furnace and control variables of various other controlled objects. This invention relates to improvements in such a program setting device related to the generation of on/off control signals for controlling on/off of relays and the like in accordance with the progress of a control pattern.

<Prior art> In a program setting device, for example, a voltage or current is generated according to a control pattern to be given as a target value to a heat treatment furnace, and at the same time, control relays such as auxiliary heaters, coolers, indicator lights, etc. are turned on and off. generates multiple on/off control signals to In order to generate such an on-off control signal, the on-time and off-time of each designated on-off control signal are stored, and the arrival of the designated time is detected to change the state of each on-off control signal to the on state. or off state).

In the conventional program setting device, the on time and the off time of the on/off control signal are specified as the elapsed time from the start point of the control pattern and are stored. Then, the elapsed time from the start point of the control pattern is successively compared with the stored specified time, and when a match is found, the corresponding on/off control signal is turned on or off.

A specific example will be shown and explained in FIG. In the figure B, P is a control pattern (voltage pattern) consisting of five segments (1) to (2), and S1, s2, and s3 are on/off control signals. In this case, for the on/off control signal S1, 0 minutes as the on time and 30 minutes as the off time are respectively designated and stored. The same applies to the other on/off control signal S2.83. The program setting device then turns each on/off control signal on or off by successively comparing the elapsed time from the start of execution of the control pattern P with the specified time stored for each on/off control signal.

<Problems to be Solved by the Invention> Now, in the case of the on/off control signal 83 in FIG. 2, if 90 minutes are specified as the on time and 245 minutes as the off time, the result is K. In order to find the specified time, Cumulative addition of time from control pattern po starting point (30+60=90.3
0+60+25+90+50=255), the specification work is complicated and mistakes are likely to occur. This is even more noticeable when there are a large number of on/off control signals and each on/off control signal is turned on and off multiple times.

Also, since the specified time is ephemeral and long, a large memory area is required to store the specified time data.
In order to display this, a large display with a large number of display digits is required. This causes an increase in the cost of the device.

Furthermore, since such specified length time data is compared with elapsed time data from the start point of the control pattern (which may be quite long), the computation for this becomes complicated. If the comparison operation is to be performed by hardware, the hardware will become complex, and if it is to be performed by software, the calculation time will be increased.

It is an object of the present invention to solve the problems related to the generation of such on/off control signals.

<Means for Solving the Problems> In order to solve the above-mentioned problems of the prior art, the program setting device according to the present invention includes an on/off control signal for each on/off control signal, as shown in the conceptual diagram of FIG. Input means a for inputting time and off time information as control data consisting of a combination of the number of a corresponding segment of a control pattern and the elapsed time from the start point of the segment, respectively;
and a data storage means for storing the control data inputted by the input means, while the control pattern is in progress.
Signal state control means d for controlling the state of each on/off control signal in accordance with the control data stored in the data storage means, the number of the currently executing segment of the control pattern, and the elapsed time from the start point of the same segment. and is provided.

<Operation> Because of this configuration, for example, in the case of the on/off control signal S3 in FIG. 0 minutes, off time segment number 5
and the elapsed time of 50 minutes from the start point of the same segment can be input immediately as control data using the input means a). The time included in the control data is the elapsed time from the start point of the segment, which is the elapsed time from the start point of the control pattern.In general, the length of the control data is also shortened considerably. Therefore, the memory area for control data in the data storage means is reduced, and the comparison operation by the data comparison means is simplified and speeded up.

<Example> An embodiment of the present invention will be described below.

FIG. 3 shows a microcomputer of a program setting device according to the present invention. This is the CPU (central processing unit) 2,
ROM (read-only memory) in which processing programs are stored
3. RAM (read/write at any time) 4 for storing control pattern determination parameters, control data related to on/off control signals, intermediate data for calculations, etc., and an input board 5 for interfacing with the outside. This is a general configuration consisting of an output port. Processing such as control pattern generation and data comparison/judgment, which will be described later, is performed by ROMg.
It is executed by the CPU 2 according to the processing program in R and AMn.

T is a key manual device for inputting data etc. to the microcomputer 1, and is input to the CPU 2 via the input board 5.
is connected to.

8 is a round display for displaying letters, numbers, etc., and is connected to the CPU 2 via an output port. This display 8 has a built-in latch for temporarily holding display data given from the microcomputer 1.

9 is a digital/analog converter, which is connected to the CPU 2 via an output port. This digital/analog converter 9 temporarily holds the control pattern data given from the microphone computer 1 in an internal latch, and outputs an analog voltage (control pattern voltage) corresponding to the control pattern data. .

10 is a signal state control circuit, which outputs on/off control signals s1, s2,
・Fist・, Turn Sn on or off. This signal state control circuit 10 has a built-in latch for temporarily holding instructions from the microcomputer 1.

The operation of the psigram setting device will be described below.

First, in order to program the control pattern, press a specific key on the single-handed device 7.
Instruct PU2. Then, the time, gradient, and level of each segment of the control pattern are inputted from the key human power device T as the parameters for determining the control pattern, as in the conventional case.

The input parameters are stored in a specific area of the RAM 4 by the CPU 2. At this time, the input parameters are also sent to the display 8 and displayed.

Next, by pressing a specific key on the key manual device 7, the CPU 2 is instructed to input control data, and then the control data of the on/off control signals S1, S2, φ, Stl are sequentially input from the key manual device 7. do. As shown in Fig. 4, the control data is as follows: ON/OFF control signal setting serial number P1 ON/ON control value number 1 (i=1. . . . n),
It consists of the segment number 5Gon at the time when it is turned on, the elapsed time Ton from the start point of the same segment, the segment number 5Goff at the time when the on-off control signal is turned off, and the elapsed time Toff from the start point of the same segment. . This control data is as shown in FIG.
The data are stored in a specific area in the RAM 4 in the order of input by U2, and are simultaneously sent to the display 8 and displayed. Note that the input order of the control data is arbitrary.

Since such control data is shorter in kana than in the past, it is possible to reduce the memory area of the RAM 4 and the number of display digits of the display 8 required for storing and displaying the control data.

The above parameters and control data are stored in the RAM 4 and transferred to the display 8 by executing the program in the ROM 3 in the CP TJ 2.

Furthermore, RAM4 is backed up by a battery.
The memory contents are preserved even after the device power is turned off. Therefore, once the control pattern and on/off control signals are programmed as described above, no reprogramming is necessary unless changed.

Assuming that such programming has been completed, when the start key of the key-powered device 7 is pressed and a start instruction is input to the CPU 2 via the input board 5, the CPU
2 starts execution of the control pattern generation program in the ROM 3, illegally calculates the value at each point in time of the control pattern (control pattern data) according to the parameters in the RAMJ, and sends it to the display 8 and the digital/digital controller via the output port. Output to analog converter 9. Since this process may be the same as the conventional process, further details will not be described. The digital/analog converter 9 outputs a control pattern voltage ■ corresponding to the input control pattern data, and the display 8 displays the value of the control pattern.

During execution of such control pattern generation processing, the CPU 2
Interruptions for generating on/off control signals occur at regular time intervals. When the interrupt occurs, the CPU
Step 2 interrupts the control pattern generation process and executes the program for the on/off control signal generation process in the ROM 5.

FIG. 5 is a simplified flowchart of the program. To explain the processing contents, the CPU 2 uses the RA
The control data is read out one by one from M4 in the storage order, and the segment number 5()oJ:1 is compared with the segment number SGr currently being executed (step 20).

5Gr (If SGon, jump to step 26, CPU
2 issues an instruction to turn off the high on/off control signal to the signal state control circuit 10 to turn off the signal. Note that when the device is powered on, the on/off control signals 81, 82, . . . , On
has been reset to the off state.

S G r (If it is S G on, 8GrzS
Gon is determined (step 21). The judgment result is N.

If so, jump to step 23. If the judgment result is YES,
A comparison is made between the elapsed time Tr from the start point of the current segment and the control data TQn (step 22). τr≧T
If it is not on, the process jumps to step 26, and the CPU 2 instructs the signal state control circuit 1o to turn off the corresponding on/off control signal.

If Tr≧Ton in step 22, or if the determination result in step 210 is No, SGr and 30
A comparison is made with OFF (step 23). 5Gr)
If 8Goff, jump to step 26. S G r
) 8 If not Go f f, then 5Gr=sGo
tto* is determined (step 24). If the determination result is No, the process jumps to step 2T, and the CPU 2 instructs the signal state control circuit 10 to turn on the self-on/off control signal G.

If the determination result in step 24C1 is YES, Tr≧To
ff is determined (step 25), and if the determination result is No, an instruction to turn on the corresponding on/off control signal is given to the signal state control circuit 10, and if it is YES, an instruction to turn off the corresponding on/off control signal is given to the signal state control circuit 10.

When the above processing is completed up to the last control data stored in the RAM 4, the interrupted control pattern generation processing is resumed.

As described above, processing related to on/off control signals is frequently performed by interrupting control pattern generation processing, and therefore, it is necessary to shorten the processing time as much as possible. According to the present invention, the control data and the data (time) to be compared with it can be shortened compared to the conventional method, so even if the comparison judgment operation is executed by software as in this embodiment, the processing time is sufficient. Can be shortened. Also, if you want to do it in hardware, the hardware for that is easier.

Therefore, as is clear from the above description, in this embodiment, the OFF instruction is repeatedly issued during the OFF period of the ON/OFF control signal, and the ON finger is repeatedly issued during the ON period of the ON/OFF control signal.
)/FN? Aly-+zL, JJ-1-ji1/r? ) Even if the signal state control circuit 10 malfunctions, the on/off control signal can be immediately restored to its normal state.

Furthermore, although the process shown in Figure 5 turns one on-off control signal on and off only once, it is possible to turn on and off the on-off control signal multiple times by partially changing its contents. It is clear from the description.

Furthermore, it is possible to replace the functions of the microcomputer 1 in this embodiment with hardware.

<Effects of the Invention> Since the present invention has been described above (nine parts), the following effects can be obtained.

(i), without performing the conventional cumulative calculation of time,
The on time and off time of the on/off control signal can be set, making the setting work easier and faster.

Additionally, setting errors due to calculation errors can be prevented.

6F) Since the control data of the on/off control signal is shorter than before, the memory capacity for storing the control data is increased, and the number of digits displayed on the display for displaying the control data is reduced. , it is possible to reduce the cost of the device.

clib, control data, and the data (time) to be compared with them, so the comparison operation can be easily and quickly executed by software or simple hardware. This also contributes to reducing the cost of the device.

(7V), thus an inexpensive program setting device with excellent operability can be realized.

[Brief explanation of drawings]

Fig. 1 is a conceptual diagram of the present invention, Fig. 2 is a waveform diagram showing examples of control patterns and on/off control signals, Fig. 3 is a schematic block diagram showing a program setting device according to the invention, and Fig. 4 is the program setting. FIG. 5 is an explanatory diagram of control data and its storage format in the device, and is a schematic flowchart of processing related to on/off control signals in the program setting device. 1..fighting microcomputer, 211..C'P
U. 3---ROM, 4"@, RAJ 5---Manual port, 6...Output boat, Tφ...Key human power device, 8...Display, 9...Digital/
Analog converter, 10-e/signal state control circuit. Figure 3 Figure 4 □ Human power... Peel (5 pieces each) Figure 5

Claims (1)

[Claims] (1) In a program setting device that generates a voltage or current according to a preprogrammed control pattern, and also generates a plurality of on/off control signals for turning on and off relays, etc. in accordance with the progress of the control pattern, each on/off control signal is generated. The information on the on time and off time of the control signal is
Input means for inputting control data consisting of a combination of the number of a corresponding segment of the control pattern and the elapsed time from the start point of the same segment, and data for storing the control data input by the input means. storage means; data comparison means for repeatedly comparing the control data stored in the data storage means with the number of the segment being executed and the elapsed time of the segment during the progress of the control pattern; A program setting device comprising: signal state control means for controlling the state of each on/off control signal according to the comparison result.