JPS58223811A - Sequence controller - Google Patents

Abstract

PURPOSE:To improve the handling performance of a sequence controller, by programming freely the contents of a monitor display before the start of operation and therefore having an automatic monitor display during operation. CONSTITUTION:A line is displayed with a push of a start button, and then each instruction stored in a user RAM15 is analyzed. Then the format of instruction is checked, and a monitor display plug is set when the instruction is accordant with its format. At the same time, the counter monitor is discriminated from the timer monitor by the input conditions. These discriminated monitors are saved in storing areas 15A and 15B respectively. The latest Z number is written over to a memory only for the instruction with which each counter of timer corresponding to the count or timer number of the storing area is set up. Thus a monitor display is possible in response to the Z number.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a sequence control device, and particularly to one having a monitor function.

Conventionally, sequence control devices have been equipped with a timer during operation to further improve their practicality and ease of handling.

Some devices were configured so that the progress status of counters, internal outputs, etc., and the distinction between energization and de-energization could be monitored using display means such as a display. However, in this type of device, when switching to the monitor function, the program key configured on the sequence control device must be pressed multiple times in advance.
There are drawbacks such as the need to manually operate in a predetermined order and the type of key to be pressed with one hand depending on the type of monitoring.

In view of the above-mentioned drawbacks, the present invention aims to set the type to be displayed on the monitor before driving.

It is an object of the present invention to provide a system that automatically performs monitoring after the start of operation and eliminates manual operation for switching monitors.

That is, the present invention is characterized in that the type of data to be displayed on the monitor can be programmed using a program key.One embodiment of the present invention will be described in detail below with reference to the drawings. 1st
In the figure, 1 is the main body of the sequence control device of the present invention, 2 is an input terminal, and 3 is an input key 14 provided in 1:1 correspondence to the 20 input terminals. The display section serves as a display means for displaying various statuses of the apparatus, and in one embodiment of the present invention, it is constructed to be able to display six digits. 5 is 0-9
Numeric keypad that allows you to input numbers such as 6 is AND.

These command setting keys are provided to enable command designation such as OR and END, function designation such as timer, counter, and internal output, and writing designation such as OUT and R/W (IJ-do/write). Similarly to the input key 3, 7 is an output key provided corresponding to the output terminal 8. Here, the input key 3. The numeric keypad 5, command setting key 6, and output key 7 are collectively referred to as program keys. 9 is the output relay.

No. 1 10 is a control key for reset, start, stop, etc., and 11 is a function switching key, which is used to switch functions such as program, test, execution, etc., and can be switched in one rotation. 12Ii power switch. A control section is built into the main body 1 of the sequence control device of the present invention, and the configuration thereof will be explained based on FIG. 2. In the figure, 15 is a central processing unit (hereinafter referred to as CPU) that mainly performs logical operations, and 14 is a read-only unit (hereinafter referred to as "CPU") dedicated to serial processing that stores processing procedures for various functions as a sequence control device. System R
Reference numeral 15 (referred to as OM) is a readable and writable random access memory (referred to as user RAM) that stores each content of the sequence circuit programmed in advance by the program key. . 16 is an input section to which the input terminal 2 is connected, and 17 is an output section to which the output terminal 8 is connected. 18 detects the electrical signal when the program key is pressed, sends an interrupt signal to the CPU 15, sends various key signals as key manual data to the CPU 13, and receives display data from 0PIJj 5. , a keyboard control section which should perform all control such as display operations on the display section 4. Also, the above C! A freely readable and writable system RAM 19# is built into the PU 15. Furthermore, as shown in FIG. 3, the user RAM 15 has timer setting data areas 15 for storing setting data for timers, counters, etc. used in the sequence circuit.
TS1. TS2. ..., C81, C8s areas are allocated. Further, as shown in FIG. 4, the system RAM 19 stores a display pack 19A for storing contents to be displayed on the display section 4, and timer and counter progress data when the sequence control device is in operation. each timer elapsed data area 19B for
A counter progress data area 19G is provided, and as described above, data TM1, TM2, . ..., QMl, 0M
A 2nd class area has been allocated. The system ROM
The programs stored in Ia are as shown in FIG.

Main program and power supply frequency value: 5100ms, which refreshes all of the control of the elementary sequence at high speed.
The program consists of three types of programs: a special program that generates a timer signal, which is constantly monitored by the CPU 13, and is given top priority when a signal is received, and an interrupt program that is linked only when the program key is pressed. are linked independently.

The present invention having the above configuration will be explained in detail.

With the power switch 12 shown in Fig. 1 turned on and the function selector key 11 switched to 1 program 1 (position P in the figure), press the program key to program the relay sequence, etc., and the contents will be displayed. are all stored in the user RAM 15 shown in FIG. When using a timer or counter during this programming, the first
"'I'i, M" set in the command setting $-6 in the figure
After pressing the "ONT" key (not shown), press the numeric keypad 5 to press the timer number 1 or the force gauge number, and use the numeric keypad 5 to press the setting data by a specified number of digits. A single piece of logic starting from input designation such as AND or HOR, output designation, and ending with R/W, that is, if the line contains the setting data 6 of the timer or counter, press the R/W key. By pressing the button each time, these setting data are registered in the designated area of each timer or counter setting data area shown in FIG. 3 corresponding to the timer or counter number.

After programming in this way, the function changeover key 11 is used for 1 program other than 1, for example 1 test 1. 'Execution 1. 'If you switch to the adjustment 1 mode (T-A position in Figure 1) and press the start key 10A, the main program will repeatedly refresh the last line from the specified twin to END at high speed. Input/output sequence control is performed 2. In this state, a twin display is performed on the display section 4 as shown in FIG. The figure shows a state in which the area from the start line 00 to the final line 67 is being refreshed. The present invention uses a timer in this state.

Monitoring values of counters, etc.; can be done automatically. That is, in the program mode mentioned above.

As shown in FIG. 7, this is possible by pressing the program key to write and store the monitoring program in the user RAM 2S. a in Figure 7
means a program such that internal output No. 21 is excited as an output when counter No. 5 counts up. Needless to say, the set value of counter No. 5 is set in another twin. Here, when monitoring is to be carried out, it is essential to determine the trigger and the means used to carry out the monitoring. In the embodiment of the present invention, the internal outputs are from No. 01 to No. 24.

Since it can be used, internal outputs 21 to 24, that is, Z2, can be used as a trigger for monitoring.
1 to Z24 are used.

FIG. 8 shows what each of the internal outputs Z21 to Z24 should display on the display unit 4 when the input conditions are satisfied, that is, when the excitation state is established. When the preset input conditions are satisfied, for example, when programmed as shown in Fig. 7a, when the counter No. 5 is satisfied, the count value of the other counter No. 1 is displayed on the display. , these analysis programs are inserted in advance into the system ROAIH4. If you program it to display Z21 to Z22 on the monitor in the program mode as shown in b, c, and d in Figure JI7, 518
In figure b, internal output Z2:l; when excited, displays the counter value of counter No. 2, %Z 25 t
h: When excited, the timer progress data of timer No. 1 is displayed as shown in C. Similarly 224
When energized, the timer elapsed data of timer No. 2 is displayed. These monitor displays are performed as shown in a, b, c, and d of FIG. 9, where a is.

Counter number 1 is 5 times, and b is counter number 2 is 1.
0 times, C means that the first timer is 5 seconds, and d means that the second timer is 7 seconds.The distinction between the counter monitor display and the timer monitor display is the LED mentioned above. Since the ID is displayed using the built-in TiM or CNT key, it is possible to distinguish between the two. Embodiment I of the present invention is configured so that one monitor display is performed on the display unit, so that each of the above-mentioned monitor displays is performed by excitation of any one of Z21 to Z24 in FIG. It looks like this. Therefore, each time the internal output to be excited changes, the contents displayed on the monitor also change, and the latest internal output is always displayed on the monitor. In addition, the monitor display may either display the elapsed value one after another every time the elapsed value of a timer or counter is updated by ≠ 2, or it may hold the elapsed value at the moment of excitation when preprogrammed input conditions are met, and other internal A method of displaying the same elapsed value until the output is excited can be considered, and a method with a -shift may also be used.In one embodiment of the present invention, the retained elapsed value is displayed. The method is adopted. In the present invention, internal output Z2 is used as a trigger means for monitoring.
Although the configuration is configured to use four outputs No. 1 to Z24, it goes without saying that other internal outputs can be used by changing the analysis program of the system ROM 1a, and the number of outputs can also be changed. Furthermore, the monitoring display is not limited to timers, counters, etc., and it is also possible to display other internal outputs that are not used as monitoring trigger means, as shown in FIG.

In Figure 10, a indicates that internal output No. 10-1Jz is being energized by lighting up the decimal point 2o in the lowest digit of the display section 4, and b indicates that internal output No. 15 is not yet in the excitation state. This is shown by turning off the decimal point 20.

In one embodiment of the present invention, the internal output key is used as the trigger means for monitoring, but it may be possible to use other specific keys. Inside the system EOM1a so that keys can be used together
It goes without saying that the D analysis program can be modified in various ways, and various applications are possible without being limited to the examples.
Of course, Figures 11 and 12 are flowcharts showing the operational flow.

To briefly explain the brooch yard, after the line is displayed by pressing the start button, each command stored in the user RAM is analyzed, and the command format d; CNT50UT Z21
Perform a format check to see if the format is correct, and if the format is correct, set the monitor display flag, and distinguish between the input condition for a counter monitor and a timer monitor, and save each in a separate storage area. .

Since the latest zi number is written over to the memory only when each counter or timer corresponding to the count number of the storage area or the timer number 1 is established, the monitor display according to the number 2 can be performed.

The determination of whether the timer is established or not is made by NMi, and since these have been described above, the flow will be omitted.

As long as the satisfaction of the input condition does not change to something else, other monitoring at the time when the input condition was satisfied (the value at the first satisfaction is held and displayed) can be continued. (This is a feature.) Therefore, the monitor cycle (time to change display content)
If considered, CNT5 0 at the time of programming
There is also a method of performing evening programming. This is because the monitor display of Z21 is displayed for 5 seconds after the input condition is satisfied, and if the input condition of other monitors is not satisfied within this time, the 5 second display is repeated again. If other input conditions are satisfied within 5 seconds, the process waits for the former 5 seconds to end.

As described above, according to the present invention, the monitor display contents to be displayed on the monitor can be programmed arbitrarily using the program key before the start of operation, so that the monitor display contents can be programmed arbitrarily during operation.

Monitor display can be performed automatically, and there is no manual operation required during monitoring, greatly improving ease of use. Furthermore, during operation, when the input conditions are satisfied, other output states are immediately and automatically displayed on the monitor, and the display contents are retained and displayed, so the relationship between the outputs of one person can be determined extremely accurately and quickly. Moreover, since the displayed contents are retained, it is possible to provide a highly practical device that can be efficiently recorded without being overlooked.

[Brief explanation of the drawing]

FIG. 1 is a front view of the sequence control device of the present invention. Figure 2 is a block diagram of the control unit, Figures 5 and 4 are ELITE configuration diagrams, Figure 5 is a program configuration diagram, Figure 6 is a diagram showing the display shape of the display unit, and Figure 7 is a key manual control diagram. An action diagram showing the order, Fig. 8 is a state explanatory diagram showing the action state, Figs. 9 and 1.
FIG. 0 is an operation explanatory diagram showing the monitor display state, and FIGS. 11 and 12 are broachyards showing the operation flow. 4...Display means, 5,5.6.7...Program key, 15...User RAM, 19...System R
A Figure 5 Rin 6 Figure/A Figure 7 $8 Figure 11

Claims (1)

[Claims] t. Monitor various data during operation using display means.
Types of data that should be displayed in IJ songs
A sequence control device characterized in that it is configured to be programmable using a program key in advance. 2. The sequence control device according to claim 1, wherein an internal output is used as a trigger means for determining the type of data to be displayed on a monitor. 5. When a pre-programmed input condition is satisfied, the display content to be displayed on the monitor is held, and the held content is displayed by the display means until another input condition is satisfied. The sequence control device according to scope 1.