JPH0944215A - Module generating method for sequential program - Google Patents

Abstract

PROBLEM TO BE SOLVED: To standardize a new module on a CAD device by taking the program of a specific area out of the sequential program stored in a programmable controller, and adding an attribute to the taken out program and generating the new module for the CAD. SOLUTION: The CAD device 10 projects the sequential data on a CRT 12 and an operator loads the sequential program stored in the programmable controller 15, to the CAD device 10 while looking at the image. Then the program of the specific area is taken out of the sequential program and the attribute is given to the taken out program to generate the new module for the CAD device 10. Consequently, the module of the sequential program modified by the programmable controller 15 can be standardized on the CAD device.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sequence program module generation method capable of standardizing a sequence program module modified on the programmable controller side by a CAD device.

[0002]

2. Description of the Related Art Conventionally, as shown in FIG. 11, a program stored in a programmable controller is created for each module (module A, B, C) using a CAD device. In each created module, the attribute of "internal" is given to the coil that activates the internal coil by its internal contact, and "external" is assigned to the coil that activates the internal coil of this module by the external contact of this module. Attribute is attached.

A program (D) is created by combining a plurality of modules having the attributes as described above, and the program is stored in the programmable controller. In the stored program, all the registers are closed internally, so the attributes of "internal" and "external" of the module are deleted.

When the stored program is changed on the programmable controller side and the program (D ') containing the changed portion is read by the CAD device to be managed in reverse, all the attributes are stored in the programmable controller. Since it disappears when it is loaded, it is not possible to extract only the changed module (B ') with the attribute attached.

Therefore, when it is desired to take out the module (B ') thus modified, the module (B) before the modification is taken out, and the module (B') after the modification is similarly modified by an editor or the like. ) Is created.

[0006]

However, when a change is made on the sequencer side in this way, the contents of this change are manually reproduced on the CAD side and then the changed module (B ') is set. This work requires a lot of time because it needs to be created, and since the occurrence of mistakes is inherent, the reliability of reproduction becomes a problem.

The present invention has been made in view of such conventional problems, and a sequence program module is generated so that a sequence program module modified in a programmable controller can be standardized by a CAD device. It is intended to provide a method.

[0008]

A method for generating a module of a sequence program according to the present invention for achieving the above object comprises the following steps.

According to the first aspect of the present invention, a CA for connecting a plurality of sequence program modules to create a sequence program for a programmable controller.
A method for generating a module of a sequence program used in a D device, wherein a sequence program stored in the programmable controller is loaded into the CAD device, a program in a predetermined area is extracted from the sequence program, and the extracted program has an attribute. Is added to generate a new module for the CAD device.

According to the second aspect of the invention, a CA for connecting a plurality of sequence program modules to create a sequence program for a programmable controller.
A module generation method for a sequence program used in a D device, wherein a sequence program stored in the programmable controller is loaded into the CAD device, a block range to be extracted from the sequence program is specified, and a block in the specified range is specified. In order to create the cross reference data by organizing the constituent members of the sequence program in the output element unit, and based on the cross reference data, the attributes of the constituent members of the sequence program are specified as the constituent members. If it is used only within the block of the range, it will be marked as "internal", and if the component is also used outside the block of the specified range, it will be marked as "external" and the block of the specified range will be marked. For the CAD device with the attribute And generates a new module.

According to a third aspect of the present invention, the cross-reference data is composed of contact points, coils, and registers, which are constituent members of the sequence program, the use locations, the number of uses, and the use status. It is characterized in that it is stored until a new module for the device is generated.

[0012]

The present invention thus constructed operates as follows.

According to the first and second aspects of the present invention, when the program in the predetermined area taken out from the programmable controller is set as a new module of the CAD device, the taken-out program is automatically added with an attribute and a new module is added. Therefore, it is not necessary to re-assign attributes as in the prior art, and it is possible to improve workability and module creation reliability.

According to the third aspect of the present invention, since the cross-reference data is stored until a new module is created, the search time for assigning attributes can be shortened and the work efficiency can be improved. .

[0015]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 is a block diagram showing the schematic arrangement of an apparatus for executing the sequence data module generation method according to the present invention.

This sequence data module generation method is executed by the CAD device 10 of FIG. CAD device 1
0 displays the sequence data on the CRT 12, and the operator creates the sequence data while looking at this screen or causes the programmable controller described later to load this program.

The programmable controller 15 is a device for controlling the operation of the production machine, and controls the operation of the production machine according to the program sent from the CAD device 10. Although not shown, a pendant that can change the program can be connected to this programmable controller.
With this pendant, you can change the loaded program or add a new program.

A sequence program as shown in FIGS. 2, 3, and 4, for example, is created in the CAD device 10 and named as module A, module B, and module C, respectively.

In the first block of module A, the input X
000 and X001 are both turned on, the register R000 and the external output Y000 such as a lamp are turned on. Further, in the second block, the register R0F0 and the external output Y001 are turned on when both the input X002 and the result R000 of the first block are turned on.

Therefore, the attribute of this module A is
["Internal" R000] ["External"
R0F0].

Similarly, in the first block of module B, register R010 and external output Y011 are turned on when inputs X010 and X011 are both turned on, and R0F0 is turned on other than this module B. Sometimes the external output Y010 is turned off. Also,
In the second block, when the input X012 and the result of the first block, R010, are both turned on, the register R0F
1 is turned on.

Therefore, the attribute of module B is
["Internal" R010] ["External"
R0F0, R0F1].

Further, in the first block of the module C, when the inputs X031 and X033 are both turned on and the R0F0 is turned on in a module other than this module B, the output Y020 is turned on, and further the input X031 is turned on. And X
When both 032 are turned on, if R0F0 is turned on in a module other than this module B, the output Y022 is turned on. Registers R0F0 and R0F1 of other modules
If both are on, the output Y021 is turned on.

Therefore, the attribute of module C is
[No "Internal"] [External] R
0F0, R0F1].

In the CAD device 10, such a module A to C is combined to create a series of programs D, which are loaded into the programmable controller 15.

When this program D is created, as shown in FIG. 5, the "branch" of the CAD data is the "branch" of the controller data, and the "symbol" of the CAD data is the "relay" of the controller data. The CAD data “function” becomes the controller data “function”
The "PI / O address" of the data is converted into the "PI / O address" of the controller data.

The program controller 15 controls the operation of the production machine based on the loaded program. The loaded program D is shown in FIG. As shown, this program D is simply a module A,
B and C are connected in order, and in this program D, all the registers are closed internally, so the "internal" of the module,
The distinction of "external" is completely lost.

When a block 4'is added to the program D loaded in the programmable controller 15 as shown in FIG. 7 to change the operation of the production machine, the module B'is changed from the viewpoint of the CAD device 10. Equivalent to what you did. When this is stored in the CAD device 10 as a standard module B ′, as it is, the distinction between “internal” and “external” of the module is completely eliminated as described above. I can't get it out.

Therefore, in the sequence data module generation method of the present invention, this module B'is created by the following procedure. This procedure is shown in the flow charts of FIGS. Here, the flowchart of FIG. 9 is a main flowchart for creating the module B ′, and FIG. 10 is a flowchart for creating cross reference data.

First, the CAD device 10 develops the program D'stored in the programmable controller 15 (S1) and takes in a range to be cut out as a module. When the module B'is taken out, the third and fourth 4'th blocks in the program D'are the module B '.
Since this corresponds to, the third and fourth 4'4 blocks are the range to be cut out (S2). Next, a process of creating cross-reference data of the contact point of the register and the coil used in this cut-out range is performed (S3).

This cross reference data is shown in FIG.
It is created according to the procedure of the flowchart shown in. First, the sequence program is opened (S11), and the start position of the block is searched at the internal code level (S12, S13). When the start position of the block is found, the contacts and coils are searched until the end of the block, and the number of times these contacts and coils are used in which block is organized in register units ( S14-S17). Such processing is performed for the module B'and the program D'which are extracted,
Cross reference data for the module B'and the program D'is created (S18).

The cross-reference data created in this way is organized as shown in, for example, FIGS. 8A to 8D (however, this example is irrelevant to the module B ').

The coil use point data of (a) shows that the coils R000, R001, R004, and R005 are not used in any block, R002 is used in the fifth block, and R003 is used in the seventh block. It indicates that

In the coil use frequency data in (b), R0
02 and R003 are used once each.

In the contact use frequency data in (c), the contact R
000, R001, R004, and R005 indicate that they are not used in any block, and R002 is the fifth.
In the block, R003 indicates that it is used in the seventh block.

The register use status of (d) is represented by 8 bytes of flag data. The first byte is the A contact not used, the second byte the B contact not used, and the third byte the coil. Represents use and non-use of, respectively. Therefore, the register usage data of R002 is 00000.
When it is expressed as 111, R002 is the A contact and the B
It shows that they are used for contacts and coils respectively.

Module B'created in this way
The cross reference data of the program D'is compared with the cross reference data of the program D ', and the register used only in the module B'is given the attribute of "internal", and the register used other than the module B'is added. Has the attribute of "external". This is performed for all the blocks of the module B ', and the cut-out block B'is made to have the attribute attached to the CAD device 1
It is stored in 0 (S4 to S8).

By doing so, it becomes possible to modularize the program changed on the programmable controller side without newly creating it on the CAD device.

[0040]

As described above, according to the present invention, the following effects are obtained for each claim. According to the first aspect of the present invention, a new module for a CAD device can be automatically generated in a state in which attributes are added only by designating an area of a module to be newly created. It is possible to improve workability and reliability of module creation.

According to the second aspect of the invention, the constituent members of the sequence program existing in the blocks in the designated range are arranged in output element units to create cross reference data, and the cross reference data is converted into the cross reference data. Based on this, the attribute of the constituent member of the sequence program is set to "internal" if the constituent member is used only in the block of the specified range, and the constituent member is outside the block of the specified range. However, if it is used, it is marked as "external", and the attribute is manually added to the block in the specified range to generate a new module for the CAD device. Since it is not necessary to attach it, it is possible to improve workability and reliability of module creation.

According to the third aspect of the present invention, after the cross reference data is created, the cross reference data is stored until a new module for the CAD device is created. The search time for assigning attributes can be shortened and work efficiency can be improved.

[Brief description of drawings]

FIG. 1 is a schematic configuration diagram of an apparatus that executes a sequence data module generation method according to the present invention.

FIG. 2 is a specific circuit diagram of module A stored in a CAD device.

FIG. 3 is a specific circuit diagram of a module B stored in a CAD device.

FIG. 4 is a specific circuit diagram of a module C stored in a CAD device.

FIG. 5 is a correspondence diagram of data conversion.

FIG. 6 is a specific circuit diagram of program D.

FIG. 7 is a specific circuit diagram of a program D ′ modified on the programmable controller side.

FIG. 8 is an explanatory diagram of creating cross-reference data.

FIG. 9 is a main flowchart for creating a module B ′.

FIG. 10 is a flowchart for creating cross reference data.

FIG. 11 is a diagram showing a conventional process for creating a module B ′.

[Explanation of symbols]

 10 ... CAD device, 15 ... Programmable controller.

Claims (3)

[Claims] 1. A C for connecting a plurality of sequence program modules (A, B, C, ...) And creating a sequence program (D) of a programmable controller (15).
A method for generating a module of a sequence program used in an AD device (10), comprising loading a sequence program (D ') stored in the programmable controller (15) into the CAD device (10), ')), A program in a predetermined area is taken out, an attribute is added to the taken-out program, and a new module (B') for the CAD device (10) is created, and a module creating method for a sequence program. . 2. A C for connecting a plurality of sequence program modules (A, B, C, ...) And creating a sequence program (D) of a programmable controller (15).
A method for generating a module of a sequence program used in an AD device (10), comprising loading a sequence program (D ') stored in the programmable controller (15) into the CAD device (10), Specify the block range (3,4 ', 4) to be extracted from the block') and arrange the constituent members of the sequence program existing in the block (3,4 ', 4) in the specified range into output element units and cross them. The reference data is created, and the attribute of the constituent member of the sequence program is used only in the block (3, 4 ', 4) of the specified range based on the cross reference data. If it is "internal", its constituent members are outside the blocks (3, 4 ', 4) in the specified range. However, if it is used, it is marked as "external", and the attribute is added to the blocks (3, 4 ', 4) in the specified range, and a new module (B') for the CAD device (10) is added. A method for generating a module of a sequence program, which is characterized in that: 3. The cross reference data is composed of a contact point, a coil, a use location of a register, which is a constituent member of a sequence program, the number of times of use, and a use status, and a new module for the CAD device (10) after being created. The module generation method for a sequence program according to claim 2, wherein (B ') is stored until it is generated.