JPH0449422A - Formation of sequence program - Google Patents

Abstract

PURPOSE:To efficiently input a sequence program by connecting an initially inputted constitutional element to an I/O terminal and a common line when the element is an initially inputted apparatus in a line concerned and automatically forming an apparatus number and its connection line number. CONSTITUTION:A sequencer is constituted of a control part 14 provided with a CPU 10 and a memory 12, an input device 16 and an output device 18 for applying a command based upon an arithmetic result of the CPU 10 to the apparatus concerned. When an inputted constitutional element is the initially inputted apparatus in the line, the apparatus is automatically connected to the I/O terminal and the common line through a connection line, and the apparatus number 31 of the inputted apparatus and the line number 32 of the connection line automatically added. Thereby, a limit switch 30 to be the apparatus is inputted in order to input a program. Consequently, the sequence program can be efficiently inputted and the misinput can be prevented..

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a method for creating a sequence program that can efficiently input a sequence program.

(Problems to be solved by conventional technology and inventions) Traditionally, relatively large machines used in production factories, etc.
A sequencer is used to control its operation. This sequencer is a special computer developed to control machines. sequencer
When inputting an operating program to a machine controlled by a machine, it is usually done while drawing a ladder diagram on the CRTI-. When entering this operating program,
If the machine is very simple to operate, the amount of programs that need to be input, in other words, the number of contacts and coils used.
The number of devices (for example, limit switches, push button switches, etc.) used in each page is not so large, and it does not take much time to input the operation program. However, when inputting an operation program to a controller that controls the operation of one line of machinery in automobile production equipment, for example, the number of contacts and coils required is an unimaginable number, and the operation Entering the program and checking its consistency takes a significant amount of time.

In addition, when inputting a sequence program, the input operation program is printed out as a ladder diagram, taking into account not only the contacts, coils, and equipment used as described above, but also later changes and repair work. In order to be able to easily search for changes or repairs, you are also required to enter comments for each contact, coil, and even the top or bottom of the device. This comment is entered as comment data by specifying the address of each contact or coil so that, for example, it can be seen at a glance what operation the contact is used for.

For example, in order to input the sequence program shown in FIG. 8 to connect the limit switch LSI to the input terminal T'-XOOI, it is necessary to perform the input in the order shown in FIG. First, the limit switch 1 shown in FIG. 9 is input, and then the connection line 3 connecting one end of this limit switch 1 and the common line 2 is input. Then, the connection line 4 connecting the other end of the limit switch 2 and the input terminal x001 is input, and the device number -;.LSI of the limit switch 1 and the wire number 100 of the connection line 3 are input.

In this way, just connecting one device to the input terminal requires five input operations as shown in 1-. Therefore, it is easy to imagine how difficult it is to input the sequence program into the controller as described above.Also, the large number of inputs means that there is a high possibility of incorrect program input. Obviously, it takes a lot of time to check the consistency after inputting the program.

The present invention has been made to alleviate such conventional problems, and an object of the present invention is to provide a method for creating a sequence program that can efficiently input a sequence program.

(Means for Solving the Problems) The present invention for achieving the object 1-2 inputs components of a sequence program using an input device, and inputs the input components first in the line. When the device is connected to the input/output terminal and the common line with a connection line, the device number -3'' of the input device and the wire number of the connection line are automatically created at the same time. Features.

(Function) According to this method, when the input component is the first input device on the line, the device is first automatically connected to the input/output terminal and the common line with the connection line. will be done.

This connection line is automatically drawn based only on the input of that device. Furthermore, the device number of the input device and the wire number of the automatically drawn connection line are automatically toned. Therefore, in order to input a program as shown in FIG. 9, it is only necessary to input the limit switch, which is a device.

(Example) Hereinafter, an example of the present invention will be described in detail based on the drawings.

FIG. 1 is a schematic configuration diagram of a sequencer that implements the method of the present invention, FIG. 2 is a flow chart of the method of the present invention, and FIGS. 3 to 7 are sequence programs using the method of the present invention. It is a diagram showing the creation process.

As shown in FIG. 1, the sequencer includes a control unit 14 equipped with a CPU 10 and a memory 2, a new program input to the control unit 14, a change input, and a connection to the sequencer. It is comprised of an input device 16 for manually operating the device being operated, and an output device 18 for giving commands to the device based on the calculation results of the CPU10. Further, the display device 20 is used to monitor the signals output from the control section 14 and to display the sequence program as a ladder diagram.

By the way, the results of analysis obtained in the process of completing the present invention, that is, the results of analysis of the order in which input is normally performed when inputting a sequence program are described below.

When inputting a program, there are two cases: a new input to a line with no data at all, and a case of input in addition to a line with data that has already been input. In the former case, it is necessary to reduce the input work, and in the latter case, it is better not to change the input data. Furthermore, if the former input is made,
In most cases, the worker first enters the equipment;
It has been found that inputs from other sources are special inputs. Further, the number of the input/output terminal f is often a number related to a device connected thereto. Therefore, the numbers assigned to the input devices, connection lines, etc.
It was also found that no problem would occur even if numbers were attached to the input/output terminals.

When a program is input to a sequencer that implements the method of the present invention, which was developed based on this background, the program will be created in the following order based on the operation flowchart of FIG. The process of creating this program will be explained with reference to FIGS. 3 to 7.

First, when a program is input using the input device 16 (Sl), it is determined whether the input program is a device (S2). It is determined whether this is the first input on the line. That is, in a state where nothing has been input yet as shown in FIG. 3, it is determined whether or not a device has been input as shown in FIG. 4 (S3). S2. If both judgments in step S3 are YES, (4) automatic input of data is performed. In other words, as shown in Fig. At the same time that the line is automatically connected, the device number and wire number are automatically input based on the number -l of the connected input/output terminal r and the line number (S4).

On the other hand, the judgment in either step S2 or S3 is No.
When the limit switch 30 is added to an existing program as shown in FIG. As shown in Figure 7, the device number 31 of the limit switch 30 and the new wire number 3 are required to be input.
2 means that it will not be possible to press the button unless it is manually input using the input device 16 (S5). The above processing is performed until all program input or the input of the changed part of the program is completed (S6).

In this way, the present invention automatically enters other required ancillary data only when the device is first entered, and otherwise enters the required data by conventional manual entry. Input is being performed. Therefore, when entering new data, the time required to enter data and the time required to check consistency can be significantly reduced, and errors during data entry can also be reduced. become.

(Effects of the Invention) As is clear from the following explanation, in the present invention, when the input component is the first input device on the line, the input component is connected to the input/output terminal and the common line. Since the device number of the input device and the wire number of the connection line are automatically created at the same time as the connection is made using the connection line, it is possible to efficiently input the sequence program and prevent input errors.

[Brief explanation of the drawing]

FIG. 1 is a schematic configuration diagram of a sequence machine for carrying out the method of the present invention, and FIG.
7 to 7 are diagrams showing the process of creating a sequence program using the method of the present invention, and FIGS. 8 and 9 are diagrams showing the process of creating a sequence program using the conventional method. be. 10...CPU, 12...Memory, 14.
...Control unit, 16...Input device, 30...Limit switch (device).

Claims (1)

[Claims] If a component of a sequence program is input using an input device, and this input component is the first input device on that line, connect that device to the input/output terminal and the common line with a connecting wire. A method for creating a sequence program, characterized in that the equipment number of the input equipment and the wire number of its connection line are automatically created at the same time.