JP2537418B2 - Control program generator - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of use] The present invention is a control capable of creating a control program corresponding to each programmable controller by using a common instruction for a plurality of programmable controllers of different models. A program creation device.

[Prior Art] A control program given to a programmable controller is usually created by a so-called programming device. In this case, the control program differs depending on the model of the programmable controller and is generally incompatible.

[Problems to be Solved by the Invention] Therefore, a control professional program creator may have to create a control program for performing the same operation for each programmable controller of a different model. Further, the control program creator must understand the contents of the instructions of the control program corresponding to each model of the programmable controller, and in some cases, a specialized control program creator is needed for that purpose.

On the other hand, when the programming device for creating the control program is dedicated to each programmable controller, the operation specifications are different, and there is a problem in terms of usability.

Therefore, Japanese Patent Laid-Open No. 62-281005 discloses a programming device in which operation specifications are shared by programmable controllers of different models. However, even in this conventional technique, a control program composed of instructions corresponding to each programmable controller must be created, and incompatibility between control programs cannot be solved.

The present invention has been made to solve the above-mentioned inconvenience, and makes the control programs compatible with each other.
An object of the present invention is to provide a control program creation device that can easily and efficiently perform work such as creation and modification of a control program by a common programming device.

[Means for Solving the Problems] In order to solve the above problems, the present invention provides a program input means for inputting a control program consisting of common instructions common to respective processes of a plurality of types of programmable controllers. And a unique instruction holding means for holding a unique instruction corresponding to the common instruction, which is composed of a combination of one or more instructions for each model of each programmable controller, and a model selecting means for selecting a model of the programmable controller A unique instruction selecting unit that selects the unique instruction corresponding to the model from the unique instruction holding unit according to the model selected by the model selecting unit, and the common instruction is selected by the unique instruction selecting unit. It is converted to the unique instruction and the unique control program for the programmable controller is converted. Characterized in that it created a gram.

[Operation] In the control program creating device according to the present invention, the command forming the control program input using the program input means is converted into an instruction according to the model of the programmable controller selected by the selecting means, and the instruction is converted into the instruction. Based on this, a desired control program corresponding to the programmable controller is created.

[Embodiment] Next, a preferred embodiment of the control program creating apparatus according to the present invention will be described, and will be described below in detail with reference to the accompanying drawings.

FIG. 1 is a block diagram of a control program creating apparatus according to this embodiment. In the figure, reference numeral 10 indicates a control program creating apparatus, which comprises a main body 12, a conversation input / output means 14, and storage means 16 and 18.

The main body unit 12 includes a calculation unit 20 and a storage unit 22, and the calculation unit
20 functions as a unique instruction selecting means, and controls input / output of the conversation input / output means 14 and the storage means 16 and 18.
The storage unit 22 has a system program 24 for controlling the operation of the arithmetic unit 20, and also has an actuator program 26 and a step program 28 created as control programs.
And holds the logic program 30.

The conversation input / output unit 14 functions as a program input unit and a model selection unit, and has a CRT display 32 having a graphic processing function, a keyboard 34, and a mouse that performs Cassole control, function selection, etc. on the CRT display 32.
36 and. In this case, the conversation input / output unit 14 includes the calculation unit 20.
Is used to create an actuator program 26, a step program 28 and a logic program 30, or these are modified, and these programs 26, 28 and
It has the function of monitoring 30 operating states.

The storage means 16 holds an actuator pattern 38 in which a basic operation pattern of each actuator constituting a controlled object such as a machine tool is defined in advance by a ladder or the like, and a step pattern 40 which is a basic pattern of step operation of each actuator, Corresponding to macro instructions, which are individual instructions that make up a source program that is a common control program, and the smallest unit instruction that corresponds to the macro instruction and that combines one or more instructions of various programmable controllers It functions as a unique instruction holding means for holding the ladder symbol 41. The patterns 38 and 40 and the ladder symbol 41 can also be created in the calculation unit 20 as necessary.

The storage means 18 holds a control program 42 for each programmable controller created using the ladder symbol 41 from the actuator program 26, the step program 28, and the logic program 30.

The control program creating device 10 according to the present embodiment is basically configured as follows. Next, a control program creating procedure using the control program creating device 10 will be described.

This producing means is roughly divided into four steps, as shown in FIG. That is, a first step of creating an actuator program based on a basic operation pattern of an actuator constituting the controlled object according to the specifications and requirements of the controlled object, and a second step of creating a step program by setting the step operation of the actuator. Steps, a third step of creating a logic program by setting logical conditions such as interlocks, and a program (object program) corresponding to the programmable controller based on the ladder symbol 41 and model data from these programs (source programs) ) Is created.

FIG. 3 schematically shows a program creating procedure in the control program creating apparatus 10.

First, prior to creating the control program, the programming language applied to the control program creating device 10 is registered as a part of the system program 24, and
A ladder symbol 41 corresponding to a plurality of different programmable controllers to which the control program created by the control program creating device 10 is applied is registered. The ladder symbols 41 of each model may correspond to the language of the control program creating device 10 in a one-to-one correspondence, or may correspond to a plurality of ladder symbols 41 and one of the languages. Multiple ladder symbols
When 41 corresponds to one language, these can be registered as macro commands.

Control program creation device 10 for which the above preparatory work has been completed
The control designer creates a control program using.

First Step The control designer selects the actuator program creation mode from the keyboard 34 and creates the actuator program 26 in accordance with the specifications and requirements of the controlled object set by the system designer. In this case, the actuator program 26 is the text editor 46 of the system program 24.
Is generated by the actuator generation program 50 based on the actuator pattern 38 which is a basic operation pattern of the actuator.

Here, the actuator pattern 38 is a basic operation pattern of a predetermined actuator set as a ladder program that specifies each contact, coil, register, etc., and is stored in the storage means 16 in advance. When the actuator pattern 38 is not preset for the actuator used for the control target, the control designer creates the desired actuator pattern 38 by the conversation input / output unit 14 using the ladder editor 44 of the system program 24. However, it can be stored in the storage means 16. The actuator program 26 created in this way is stored in the storage unit 22 as a source program.

Second process The control designer selects the step program creation mode and creates the step program 28. In this case, the step program 28 is input using the step editor 59 and is generated by the step ladder generation program 62 based on the step pattern 40.

Here, the step pattern 40 is one in which an operation circuit for stepping through the steps of the control program is set as a ladder program. In addition, step pattern 40
Are stored in the storage means 16, but can be set using the ladder editor 44 as in the case of the actuator pattern 38. The step program 28 created in this manner is stored in the storage unit 22 as a source program, as in the case of the actuator program 26.

Third step The control designer selects the logic program creation mode and creates the logic program 30. In this case, the logic program 30 is input using the logic chart editor 69, generated by the logic chart conversion program 76, and stored in the storage unit 22 as a source program.

When the above program creation work is completed, the control designer next inputs the model data of the programmable controller 56 connected to the control program creation device 10 using the conversation input / output means 14.

Fourth Step Operation unit 20 is an actuator program 26, a step program 28 and a logic program stored in the storage unit 22.
A source program consisting of 30 is sequentially read, a ladder symbol 41 corresponding to each instruction of the source program is fetched from the storage device 16 from the model data, and the source program is converted into a ladder program corresponding to the programmable controller 56. In this case, each instruction of the source program is a macro instruction, a unit ladder program including one or a plurality of instructions of the programmable controller 56 corresponding to the macro instruction is selected, and the unit ladder program constitutes a ladder program. Next, the ladder compiler 52 converts the ladder program into an object program and stores it in the storage means 18 as the control program 42 corresponding to the programmable controller 56.

The control program 42 is loaded directly into the programmable controller 56 using communication means, or is loaded into the programmable controller 56 from the programming 58 via the floppy disk FD.

Therefore, the programmable controller 56 drives and controls a control target such as a work robot based on the control program 42. On the other hand, the control program creation device 10 captures the drive state of the controlled object as the I / O state via the programmable controller 56 and the interface 54, and the monitor controller 78 displays the CRT display 3 in real time.
Display in 2. Therefore, the operator can always monitor the operating state of the controlled object on the CRT display 32.

[Effects of the Invention] As described above, according to the present invention, it is possible to create a control program by using common instructions for programmable controllers of a plurality of models. Therefore, the worker does not need to have a command language peculiar to each programmable controller as knowledge, and a specialized operator is not required for each programmable controller. Work and the like can be performed extremely easily and quickly. Also, by unifying the command language of the control program, for example, when the model of the program controller is changed,
It is not necessary to change the control program according to the model, and thus a control program with extremely high versatility can be prepared. Further, the control program creating apparatus itself does not need to be selected in accordance with the command language of the control program and can be shared, which is extremely economical and convenient in operation.

[Brief description of drawings]

FIG. 1 is a block diagram showing a configuration of a control program creating device according to the present invention, FIG. 2 is a schematic process diagram of a program creating procedure in the control program creating device shown in FIG. 1, and FIG. 3 is a control program shown in FIG. It is an explanatory view of a procedure of creating a control program in the creating apparatus. 10 …… Control program generator 12 …… Main body 14 …… Conversation input / output means 16, 18 …… Storage means 20 …… Computing section 22 …… Storage section 24 …… System program 26 …… Actuator program 28 …… Step Program 30 …… Logical program 40 …… Step pattern 42 …… Control program

Claims (2)

(57) [Claims] 1. A program input means for inputting a control program consisting of common instructions common to respective processes of a plurality of types of programmable controllers, and one or a plurality of instructions for each type of the programmable controllers. A unique instruction holding means for holding a unique instruction corresponding to the common instruction, a model selecting means for selecting a programmable controller model, and a unique instruction holding means according to the model selected by the model selecting means. A unique instruction selecting means for selecting the unique instruction corresponding to the model, and converting the common instruction into the unique instruction selected by the unique instruction selecting means to create a unique control program for the programmable controller. A control program creating device characterized by: 2. The apparatus according to claim 1, wherein the unique instruction holding means holds a plurality of unique instructions of a programmable controller corresponding to one macro instruction which constitutes a control program consisting of common instructions. Control program creation device.