JPH02165305A - Programmable controller - Google Patents

Abstract

PURPOSE:To make debugging easy and to reduce time and labor required for the debugging by executing debugging based upon a user program obtained by correcting a double coil to a single coil. CONSTITUTION:At the time of detecting a double coil as a retrieved result based upon a retrieving part 2, a display part 3 displays the leading program step number including the double coil in a user program and a message indicating whether the double coil is to be corrected or not to allow an operator to select a correction processing part 5. When the operator selects the processing part 5, the processing part 5 executes the OR operation of the double coil input side program in the user program including the double coil, corrects the double coil to a single coil and debugging is executed based upon a user program formed based upon the simplified coil. Consequently, debugging is made easy and the time and labor required for the debugging can be reduced.

Description

[Detailed Description of the Invention] <Industrial Application Field> The present invention is a programmable computer having a function of storing a user program for sequence control of a controlled object in a storage means and debugging the user program stored in the storage means.・It is related to the controller.

<Prior art> In recent years, as sequence circuits have become more complex, programmable
A controller has been developed.

Programmable controllers have been developed that allow the sequence programs of such programmable controllers to be debugged not only by the manufacturer but also by the user.

The programmable controller creates and inputs a program based on a sequence circuit made up of circuit elements, for example, a ladder diagram created by the user, as shown in FIG. If the output element number of the sequence circuit inputted in this way is used incorrectly, there is a device that has an element number error check function that can check and correct the incorrect use of the output element number of the sequence circuit. Yes (see Japanese Patent Application Laid-Open No. 63-159904).

<Problems to be Solved by the Invention> By the way, a program created by a user may include a double coil, as shown in FIG. Even if this double coil exists, the program itself is often correct, so searching for or modifying the double coil is not performed.

However, if the dual coils are located far apart and there is a programming error, it is difficult to debug it.

To explain in more detail based on FIG. 8, the user program corresponding to program step number 50 on the ladder diagram appears between program step numbers 50 to 57. Further, the user program corresponding to program step number 100 appears between program step numbers 100-102. That is, a double coil is present.

In this way, if a double coil occurs at a position 50 steps apart, the user must search and debug it, which saves time and effort in searching for a place to correct the program. This causes the inconvenience of being affected.

Purpose> The present invention has been made in view of the above problems, and provides a programmable controller that can reduce the time and labor required for debugging a user program when dual coils are present. The purpose is to

Means for Solving the Problems> In order to achieve the above objects, the programmable
The controller includes a search means for sequentially searching for the double coil in the user program in response to a search command input from the operator, and a display means for displaying the first program step number of the circuit in which the double coil exists. , comprising a selection means for causing the programmer to select whether or not to perform processing for modifying the double coil, and a modifying means for calculating the logical sum of the input side programs of the double coil and modifying the program into a single coil. be.

According to the programmable controller with the above configuration,
Even if a double coil occurs in a user program, the double coil can be searched for and modified as described below. First, in response to a search command input from the operator, the search means sequentially searches for double coils from a user program stored in the storage means in advance. When a double coil is found as a result of the search, the display means displays the first program step number in the user program in which the double coil exists and whether or not the double coil is to be modified. Let them select the corrective measures. If the operator selects the modifying means, the modifying means calculates the logical sum of the dual coil input terminal program of the user program in which the dual coil exists, and modifies the program into a single coil. can.

If debugging is performed based on a user program created based on the unified coil, debugging becomes easy and the time and labor required for debugging can be reduced.

<Embodiments> Examples of the programmable controller according to the present invention will be described below with reference to the accompanying drawings.

FIG. 1 shows a functional block diagram of a programmable controller.

The above-mentioned programmable controller includes an input section (1) for inputting a search command etc. of the user program, and a search section (2) for sequentially searching the double coils in the above-mentioned user program in response to the search command input from the operator. and a display section (3) that displays the first program step number in which the double coil exists in the user program, and whether or not to modify the double coil, and whether or not to perform processing to modify the double coil. It has a selection section (4) that allows the programmer to select, and a modification processing section (5) that takes the logical sum of the input side programs of the dual coils and creates a single circuit configuration.

When a double coil as shown in FIG. 8 occurs, the correction processing unit (5) can logically OR program step numbers 56 and 101 to make the program step numbers consecutive (second (see figure)
. This turns the dual coils into a single circuit configuration. In accordance with this, it is possible to execute a process of modifying the program after program step number 100 to 58 or later to make the program step numbers continuous.

FIG. 3 shows a hardware configuration diagram of the programmable controller.

This programmable controller's pass line (29
) includes a CPU (21), a system program memory (22), a user program memory (23),
A data memory (24), an input circuit (25), an output circuit (26) and a peripheral device interface (27) are connected.

The CPU (2+) is the system program memory (2+).
2) Based on the system program stored in advance,
Executes double coil check processing, etc.

The system program memory (22) stores a system program that causes the CPU (21) to perform double coil check processing and the like. The functional block diagram shown in FIG. 1 above is based on this system program.

The user program memory (23) stores a user program converted by the user based on the ladder diagram. Further, the data memory (24) temporarily stores searched double coil data and the like.

Further, the input circuit (25) has a large number of input signal sources such as various switches or operation coils, and the output circuit (26) is equipped with a large number of control relays.

The peripheral device interface (27) connects the programmable controller and its peripheral devices to the programming device.
Voltage levels, etc. between the consoles (28) are matched.

Figure 4 shows the operation panel (28) of the programming console (28) connected to the programmable controller.
1ia).

The operation panel (28a) includes operation keys (28b) and a display (28c).

The operation keys (28b) are number keys (28d) from 0 to 9.
) and various processing keys (28e), and numeric keys (
28d) is used by the operator to input the first program step number, etc. of the program step when debugging the user program, and various processing keys (
28e) includes various function keys that are operated when performing search, correction processing, etc.

If a double coil exists as a result of searching for a double coil, the display (28c) will display the first program step number in which the double coil exists in the corresponding ladder diagram.
(See FIG. 6(a)), and a message requesting correction of the double coil is displayed (see FIG. 6(b)).

FIG. 5 shows a flowchart of the double coil check processing program.

First, when the operator selects the double coil check processing program, the CPU (21) sequentially searches for double coils from the user program stored in the data memory (24) in advance (step ①). ). As a result of the search, for example, if a double coil exists at program step number 100 in the user program,
The CPU (21) displays the message "100 double coils available" on the display (2) on the operation panel (28a).
8c) (step ■) (see FIG. 6(a)). Next, the CPU (21) sends a message asking whether or not to modify this program, such as "Do you want to modify it?"
(YES: INO:O) Display J on the display (28c) (step ■) (see FIG. 6(b)). The operator looks at the displayed message and decides whether or not to modify the program, and if so, inputs, for example, the "1" key from the number keys (28d), or vice versa. If not, for example, input the "0" key. Here, when the "1" key is input, the CPU (2
1) Executes program modification processing (step ■)
. For example, as shown in Figure 2, the program in Figure 8 is
Program step numbers 56 and 101 can be logically ORed to make the program step numbers consecutive. This turns the dual coils into a single circuit configuration.

In response to this, a process is executed to modify the program with program step numbers 100 and onwards to numbers 58 and onwards to make them continuous program step numbers.

When the "0" key is input, the program jumps to step (2) without executing the program correction process. Then, the CPU
In (21), it is determined whether the program modification process has been completed (step ■). As a result of the judgment, if the program correction processing has not been completed, the program jumps to step (3) and repeats the double coil check processing once again. Conversely, if it is determined that the program correction process has been completed, the double coil check process is ended (step 2).

With the programmable φ controller having the above configuration, the user program shown in FIG. 2(b) can be obtained as a result of searching, modifying, etc. the user program shown in FIG. 8(b). That is, the double coil is eliminated, and each step between program step numbers 50 and 60 can be made continuous, resulting in a simplified and easy-to-read program.

Therefore, the user can simplify the user program by double coil check processing.

Therefore, debugging can be performed easily and efficiently, and the time and labor required for debugging can be reduced.

In the above embodiment, before the program modification process is executed, only a message indicating whether or not to modify the program is displayed, but for example, an alarm buzzer may be sounded or a display lamp may be blinked. It is possible to make various design changes without changing the gist of the present invention.

<Effects of the Invention> As described above, according to the programmable controller of the present invention, the search means can sequentially search for double coils from the user program stored in the storage means in advance. Since the double coil can be modified into a single coil by the modifying means, the user program corresponding to the modified part becomes an easy-to-read program that is continuous for each program step.

Therefore, if you debug based on the user program obtained in this way, the debugging will be fine.
It is possible to reduce the time and labor required for debugging, and the unique effects of reducing malfunctions of the controlled object due to program errors can be obtained.

[Brief explanation of the drawing]

Fig. 1 is a functional block diagram of a programmable controller according to an embodiment of the present invention, Fig. 2 is an example of a user program and ladder diagram after program modification processing, and Fig. 3 is a hardware configuration of the programmable controller. Figure 4 is an external view showing the operation panel of the programming console, Figure 5 is a flowchart of the double coil check processing program, Figure 6 is an example of the display displayed on the display of the programming console, Figure 7 Figure 8 is an example of a user program and ladder diagram in which an element number is incorrectly used. Figure 8 is an example of a user program and ladder diagram in which a double coil is present. (1)...Input section, (2)...Display section, (3)...
- Search unit, (4)...Selection unit, (5)...Correction processing unit, (21)...CPU. (22)...System program memory, (23)...
...User program memory, (24)...Data memory, (25)...Input circuit, (26)...Output circuit, (
27)... Peripheral device interface (G) LD ORNOT ND OUT D ND LIT ooBo. D D AND NOT D ND ORLD AND LD ×001 OO2 ×Oo3 ×Oo4 100 LD N0T 101 LD 102 OUT OO6 OO7 OI O

Claims (1)

[Claims] 1. User who performs sequence control on controlled objects The program is stored in a storage means and stored. The user program stored in the means, A programmable program with the ability to debug In the controller, the above operator In response to the search command input from Search for double coils in the program sequentially There is a search means and the above double coil First program step number of the circuit and a display means for displaying the It is up to the programmer to decide whether or not to take corrective action. Selection means for selecting and the above double coil Take the logical OR of the input side programs and simply Equipped with a correction means for correcting one coil. A programmable program that is characterized by le controller.