JPH1185225A - Program preparation device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To attain efficiency of an input operation without having an operator to be conscious of order of input of a program and at the same time to prevent a mistake in a program generation. SOLUTION: A process shape instructed by an operation key 46 of a program preparation device 40A is operated by a micro processor 41 in accordance with a specified procedure and stored in a process form memory 44. Contents of the process form memory 44 are read out by a batch generation means of a command in the process form 2, a process driving command and a process operation start command corresponding to the process form are generated and, at the same time, are converted into a pseudo process stepping program and transferred to a sequence program memory 63 of a programmable controller 60A by generating a pseudo command for indicating an input position of a transfer condition command a pseudo command for indicating an input position of an output driving program.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for creating a program for a programmable controller (hereinafter referred to as PLC), and more particularly to an SFC (Sequence).
This is intended to facilitate the creation of a step-increment type program called an "entral Function Chart".

[0002]

2. Description of the Related Art SFC type programs are described in detail in "Program Creation Apparatus" disclosed in Japanese Patent Application Laid-Open No. 9-6419. In addition, a specific method for the program for translational branching and merging must be specified. In the following, a conventional program creation method will be described.

(1.1) Description of the configuration of the prior art (in the case of selective branching / merging) FIG. 17 illustrates an example of what is generally called selective branching / selecting merging in a publicly known SFC diagram. In the figure,
Reference numeral 1 denotes an initial process in which the process number is set to S0, which is activated when the power of the PLC is turned on. 2 is PLC input X0 ON
3 is a transition condition for conducting when the input X4 of the PLC is O
This is a transition condition for conducting at the time of FF.

Reference numeral 4 denotes a process having a process number S10, which is activated when the initial process 1 is active, and both the transition condition 2 and the transition condition 3 are conducting, and the initial process 1 as the source of the transition. Inactive. 5 is an output for the output Y0 of the PLC operating when the step 4 is active, and 6 is an output for the PLC.
Transition condition for conducting when the input X1 is ON.

[0005] Step 7 is a step having a step number of S11,
The step 4 is activated when the transition condition 6 is conducting while the transition condition 6 is conducting, and deactivates the transition source step 4. 8 is an output corresponding to the output Y1 of the PLC which operates when the step 7 is active, and 9 is a transition condition for conducting when the input X2 of the PLC is ON.

Reference numeral 10 denotes a process whose process number is S12, which is activated when the process 7 is active and the transfer condition 9 is conductive, and inactivates the process 7 as the transfer source. Reference numeral 11 denotes an output corresponding to the output Y2 of the PLC which operates when the step 10 is active, and reference numeral 12 denotes a transition condition for conducting when the input X3 of the PLC is ON.

Further, 13 is a transition condition for conducting when the input X4 of the PLC is ON, and 14 is a transitional condition when the input X0 of the PLC is OFF.
The transition condition for conducting at the time of F, where the process number is S20
The activation is performed when the initial step 1 is active and the transition condition 13 and the transition condition 14 are both conducting, and deactivates the initial step 1 of the transition source. 16 is an output corresponding to the output Y3 of the PLC which operates when the step 15 is active. Reference numeral 17 denotes a transition condition for conducting when the input X5 of the PLC is ON.

Reference numeral 18 denotes a process whose process number is S21. The process 18 is activated when the process 15 is active and the transition condition 17 is conducting, and at the same time, the process 15 is made inactive. 19 is process 1
The output corresponding to the output Y4 of the PLC that operates when the signal 8 is active, the transition condition 20 that conducts when the input X6 of the PLC is ON, and the transition condition 21 that conducts when the input X7 of the PLC is ON.

Reference numeral 22 denotes a step having a step number S30, when the step 10 is active and the transition condition 12 is conducting, or when the step 18 is active and the transition condition 20 or the transition condition 21 is active.
Is activated when is conducted, and deactivates the source step 10 or 18. 23 is a drive condition for conducting when the input X10 of the PLC is ON, 24 is an output for the output Y5 of the PLC operated according to the drive condition 23 when the process 22 is active, and 25 is a drive when the input X11 of the PLC is ON. This is a transition condition for conduction, and is a transition condition for a process connected to the next stage.

FIG. 18 shows an example of a program list of the SFC diagram for performing the selective branch / selection merge shown in FIG. This program list complies with the key operation procedure in the conventional program creation device. In FIG. 18, reference numeral 26 denotes an operation key corresponding to the step operation start command STL; 27, an operation key for the symbol S corresponding to the step number; 28, a numerical key for inputting the step number; Numeric keys corresponding to the hexadecimal values are prepared. 29 is an operation key 26.2
This is an execution key for validating a series of STL_S0 instructions according to 7.28.

Hereinafter, the program is sequentially performed in the same manner.
Is a normally open contact command LD for starting a transition condition, 31 is a series normally closed contact command ANI for a transition condition, 32 is a process drive command SET,
Reference numeral 33 denotes an output command OUT, reference numeral 34 denotes a parallel normally open contact command OR for transition conditions, reference numeral 35 denotes an operation key for a symbol X corresponding to the input of the PLC, and reference numeral 36 denotes an operation key for a symbol Y corresponding to the output of the PLC.

Numeral 500 denotes an input operation of a process operation start instruction corresponding to the initial process 1 shown in FIG. 17, 501 denotes an input operation of the shift condition 2, shift condition 3 and the process drive command corresponding to the process 4 shown in FIG. 17 is an input operation of the transition condition 13, the transition condition 14 and the step driving command for the step 15 shown in FIG. 17, 503 is a process operation start command corresponding to the step 4 shown in FIG. 17, an internally driven output 5 and a transition condition 6 504, a step operation start instruction corresponding to the next step 7; an operation 504 corresponding to the step 15 shown in FIG. 17; An input operation of a process drive command corresponding to the process 18, a process operation start command 505 corresponding to the process 7 shown in FIG. 17, and an input operation of the internally driven output 8 and the transition condition 9 The input operation corresponding to the process drive instruction corresponding to the next step 10, the input operation corresponding to the step operation start instruction corresponding to the step 18 shown in FIG. 508 is the input operation of the process operation start command, the drive condition 23, the output 24, and the transition condition 25 to the next process which constitute the process 22 shown in FIG. An input operation 509 is a process operation start command corresponding to the process 10 shown in FIG. 17, an input operation of the transition condition 12, and a process operation start command corresponding to the merging process 22.
Reference numeral 10 denotes a process operation start command corresponding to the process 18 shown in FIG. 17, a transition condition 20, a transition condition 21 input operation, and a process drive command corresponding to the merging process 22.

(2.1) Description of the operation and operation of the prior art (in case of selective branching / merging) In the SFC diagram configured as shown in FIG. 17, when the PLC is powered on, step 1 is active and transition condition 2 Alternatively, when either one of the transition conditions 13 becomes conductive, the step 4 or the step 15 becomes active, the output 5 or the output 16 operates, and the initial step 1 of the transition source becomes inactive.

For example, if only the transition condition 2 is conductive and the step 4 is active, the output 5 operates. For example, if this is a right-hand motor, the input X1 as a right limit switch is set as the transition condition 6 and the right limit is set. , Step 7 becomes active and Step 4 becomes inactive. Thereby, for example, the right-hand motor is stopped, and the operation at the right limit position is started by the output 8 of the next step 7.

For example, if the input X2 as a work completion signal at the right limit position is set as the transition condition 9, when the work is completed at the right limit position, step 10 becomes active and step 7 becomes inactive. Accordingly, if the output 11 of the step 10 is, for example, a left-handed motor, the input X3 as the left limit switch is set as the transition condition 12, and when the left limit is reached, the step 22 is reached.
Becomes active and step 10 becomes inactive. Thus, for example, the left-hand motor stops.

For example, only the transition condition 13 becomes conductive and the step 15
Is active, the output 16 operates. For example, if this is an ascending motor, if the input X5 as the upper limit switch is set as the transition condition 17, when the upper limit is reached, the step 18 becomes active and the step 15 becomes inactive. Become. Thereby, for example, the lifting motor is stopped, and another operation is started by the output 19 of the next step 18.

For example, if the output 19 is a descending motor, the input X6 as an origin limit switch is a transition condition 20, and the input X7 as a manual stop switch is a transition condition 2.
If it is set to 1, the step 22 becomes active and the step 18 becomes inactive when the origin is reached or by a manual stop signal.
Thereby, for example, the descending motor stops.

The end of the above two types of process sequences is determined by the transition condition 1
2. When the transition condition 20 or the transition condition 21 becomes conductive, the merging step 22 becomes active, and the respective transition source steps become inactive. Thus, if the output 24 of the step 22 is, for example, a transport motor, the input X10 as the transport start switch is set as the drive condition 23 and the input X11 as the transport position limit switch is set as the transition condition 25. 22 becomes inactive and moves to the next step.

In the program list shown in FIG. 18, the contact instructions LD-30, ANI-31, OR-34 are programmed before the process drive instruction SET-32, and are used as transition conditions in combination with the process start instruction STL-26. Function. In this program list, a process operation start command STL • 26 and a process drive command SET • 32 are input in accordance with a certain rule / order in order to represent an SFC diagram including a selective branch process using a command word.

In an input operation 500, the start of the initial step 1 is defined. In an input operation 501, the transition condition 2 and the transition condition 3 for the first column branching step in the initial step 1, and the first column branch activated by the transition condition 3 are activated. Instruct the driving of the first step 4,
In the input operation 502, the transition condition 13 and the transition condition 14 for the second column branching step in the initial step 1 and the driving of the leading step 15 of the second column branch activated thereby are instructed.

According to the microprocessor in the PLC, the SFC diagram is a selective branch with the process 1 as an initial process from the program in the system memory, and the contents of the input of the transition condition 2, the transition condition 3, the transition condition 13, and the transition condition 14 It is determined that either step 4 or step 15 is to be executed.

In the input operation 503, the input operation 504, and the input operation 505, a process operation start command, an input condition, a drive output, a transition condition to the next process, and a process drive command corresponding to the next process are included. Is defined.

In the input operation 506, only the drive output 19 in the final step 18 of the second column branching step is defined. In the input operation 507, only the drive output 11 in the final step 10 of the first column branching step is defined. Then the merging process 2
2, a step operation start command, an input condition, a drive output, and a transition condition to the next process are defined. In the input operation 509, the merge process 2 is performed in the final process 10 of the first column branch process.
The transition condition 12 for merging to the second step and the drive of the merging step 22 activated by this are defined. In the input operation 510, the transition condition 20 for joining to the merging step 22 in the final step 18 of the second row branching step is defined. , The transition condition 21 and the driving of the merging step 22 activated by this are defined.

Thus, the microprocessor in the PLC uses the program in the system memory to change the SFC diagram in the first column branch process 10 or the second column branch process 18 to the transition condition 12 or the transition condition 20, When any one of the inputs of the transition condition 21 is turned on, it is determined that the selected merging is to activate the merging step 22.

As described above, in the input operation of the selective branching step using the instruction word, when the branching from the initial step is started, the transition processing for each step is individually performed, and at the time of merging, the transition processing for each branch is performed in the final step. It is a rule of the SFC program expression that after the driving process, the transition process to the merging process is performed for each final process of each branch.

(1.2) Description of the configuration of the prior art (in case of translational branching / merging) FIG. 19 shows an example of a generally known SFC diagram called a translational branching. It is an example of the SFC diagram performed. In FIG. 19, 400
Is an initial step in which the step number is set to S1, and is activated when the power of the PLC is turned on. 401 is a transition condition for conducting when the input X20 of the PLC is ON.

Reference numeral 402 denotes a step having a step number of S40.
It is activated when the initial step 400 is active and the transition condition 401 is conductive, and deactivates the initial step 400 of the source. 403 is an output corresponding to the output Y10 of the PLC operating when the step 402 is active, and 404 is a P output.
Transition condition for conducting when the input X21 of the LC is ON.

Reference numeral 405 denotes a step having a step number of S41.
When the step 402 is active and the transition condition 404 is conductive, the step 402 is activated, and the step 402 of the transition source is deactivated. Reference numeral 406 denotes an output corresponding to the output Y11 of the PLC which operates when the step 405 is active, and 407 denotes a transition condition for conducting when the input X22 of the PLC is ON.

Reference numeral 408 denotes a process whose process number is S42,
When the step 405 is active and the transfer condition 407 is conducting, the step 405 is activated and the step 405 of the transfer source is inactivated. 409 is an output corresponding to the output Y12 of the PLC which operates when the step 408 is active.

Reference numeral 410 denotes a process whose process number is S50.
A step of simultaneously activating the step 402 when the initial step 400 is active and the transition condition 401 is conducting. 411
Is the output for the output Y13 of the PLC that operates when step 410 is active, and 412 is the output X23 of the PLC
Transition condition for conduction when N.

Reference numeral 413 denotes a step whose process number is S51. The step 413 is activated when the step 410 is active and the transition condition 412 is conductive, and deactivates the step 410 of the transition source. 414 is a P that operates when step 413 is active.
The output for the output Y14 of the LC is a transition condition for conducting when the input X24 of the PLC is ON.

Reference numeral 416 is a step whose step number is S60.
Steps 408 and 413 are both active and the transition condition 41
5 is activated when conducting, and also deactivates both the source steps 408 and 413. 41
Reference numeral 7 denotes an output for the output Y16 of the PLC which operates when the step 416 is active, and reference numeral 418 denotes a transition condition for conducting when the input X25 of the PLC is ON, which is a transition condition for a step connected to the next stage.

FIG. 20 shows an example of the program list of the SFC diagram for performing the translational branching and merging shown in FIG. In FIG. 20, reference numeral 26 denotes a process operation start command ST.
An operation key corresponding to L, an operation key 27 for a symbol S corresponding to a process number, and a numeric key 28 for inputting a process number, generally provided with numeric keys corresponding to decimal values from 0 to 9. I have. 29 is an operation key.
An execution key for validating a series of STL_S1 instructions by the operations of 27 and 28.

Hereinafter, the program is sequentially performed in the same manner.
Is a normally open contact command LD for starting a transition condition, 32 is a process driving command SET, 33 is an output command OUT, 35 is an operation key for the symbol X corresponding to the input of the PLC, and 36 is a PLC.
Are the operation keys for the symbol Y corresponding to the output of.

520 is an input operation of a process operation start command corresponding to the initial process 400 shown in FIG. 19, and 521 is a transition condition 401 and a process 40 in the initial process shown in FIG.
Input operation of process drive command corresponding to 2 and process 410, 5
Reference numeral 22 denotes a process operation start command corresponding to the process 402 shown in FIG. 19, an internally driven output 403, and a transition condition 40.
The input operation of Step 4 and the input operation of the process drive command corresponding to the next step 405 are performed. The input operation 523 of the process operation start command corresponding to the step 410 shown in FIG. An input operation of a process driving command corresponding to the process 413, and 524 is a process 40 shown in FIG.
5, a step operation start instruction corresponding to the step 5, an input operation of the internally driven output 406 and the transition condition 407, and a next step 408
525 is a process operation start command corresponding to the process 413 shown in FIG. 19 and an input operation corresponding to the internally driven output 414, and 526 is a process operation input command corresponding to FIG.
The input operation of the process operation start command corresponding to the process 408 shown in FIG. 9 and the internally driven output 409 and the next process 527 are the process operation start command constituting the process 416 shown in FIG. The input operation 528 of the shift condition 418 to the step 408 is the input operation of the step operation start instruction corresponding to the step 408 and the step 413 shown in FIG. 19, the input operation of the shift condition 415, and the input operation of the step drive instruction corresponding to the merge step 416.

(2.2) Description of the operation and operation of the prior art (in case of translational branching / merging) In the SFC diagram configured as shown in FIG. 19, when the PLC is powered on, the process 400 is active and the transition condition 401 Are conducted, Steps 402 and 410 are simultaneously activated, the outputs 403 and 411 are operated together, and the initial step 400 of the transfer source is inactivated.

In the following SFC diagram, the activation of the step 405 is the transition condition 404, and the activation of the step 408 is the transition condition 4
07, the activation of the step 413 is sequentially performed according to the transition condition 412, and accordingly, the preceding steps are sequentially deactivated.

The transition condition 415 is a transition condition for merging the process sequence to be translated into one process, and the transition condition 4 when both the process 408 and the process 413 are activated.
When 15 is turned on, the process proceeds to the next step, and merges in step 416.

In the program list shown in FIG. 20, the contact command LD 30 is programmed before the process drive command SET 32, and functions as a transition condition in combination with the process start command STL 26.

In this program list, a process operation start command STL 26 and a process drive command SET 32 are input in accordance with a certain rule and order in order to represent an SFC diagram including a translational branch process using a command word. , Input operation 5
In step 20, the start of the initial process 400 is defined, and the input operation 52
In 1, a transition condition 401 in the initial process 400 and an instruction to drive the first step 402 of the first column translation and the driving of the first step 410 of the second column translation activated by this are instructed.

As a result, the microprocessor in the PLC is translated by the program in the system memory, the SFC diagram is a translational branch with the process 400 as an initial process, and the transition condition 401 is turned on to execute the processes 402 and 410 simultaneously. Judge that it is. Input operation 5
22, an input operation 523 and an input operation 524 define a process operation start command, an input condition, a drive output, a transition condition to the next process, and a process drive command corresponding to the next process for configuring each process.

In the input operation 525, only the drive output 414 in the final step 413 of the second column translation step is defined. In the input operation 526, only the drive output 409 in the final step 408 of the first column translation step is defined. Defines a process operation start command, an input condition, a drive output, and a condition for shifting to the next process for configuring the merging process 416. An input operation 528 defines a final process 408 of the first row translation process and a second process of the second column translation process. When both the final steps 413 are active,
The drive of the merging step 416 activated by the transition condition 415 is defined.

As a result, the microprocessor in the PLC changes the first SFC diagram according to the program in the system memory.
When the final step 408 of the column translation step and the final step 413 of the second column translation step are both in the active state, it is determined that the input of the transition condition 415 is ON to activate the merge step 416.

As described above, in the input operation of the translational branching step using the instruction word, when the branching from the initial step is started, the transition processing for each state is performed at once, and at the time of merging, the transition processing is performed for each branch in the final step. It is a rule of the SFC-type program expression that the transfer processing for the merging step is performed collectively after performing the driving processing of (1).

(1.3) Description of Configuration of Conventional Technique (Single Flow) FIG. 21 shows an example of what is called a single flow in a generally known SFC diagram. In the figure, 60
0 is an initial step in which the step number is set to S2, and is activated when the power of the PLC is turned on. 601 is a PLC input X30
Is a transition condition for conducting when is ON.

Reference numeral 602 denotes a step having a step number of S70.
It is activated when the initial step 600 is active and the transition condition 601 is conducting, and deactivates the initial step 600 of the transfer source. 603 is an output corresponding to the output Y20 of the PLC operating when the step 602 is active, and 604 is P
Transition condition for conducting when the input X31 of the LC is ON.

Reference numeral 605 denotes a process whose process number is S75.
Step 602 is activated when the transition condition 604 is active and the transition condition 604 is conducting, and the transition source step 602 is deactivated. Step 606 is for the output Y25 of the PLC operating when the step 605 is active. Output, 607 is PLC
Transition condition for conducting when the input X32 is ON.

Step 608 is a step number S77, which is activated when the above-mentioned step 605 is active and the transfer condition 607 is conductive, and in which the step 605 of the transfer source becomes inactive, and 609 is a step 608 Is an output corresponding to the output Y27 of the PLC which operates when the input is active, and 610 is a transition condition for conducting when the input X33 of the PLC is ON, which is a transition condition to a process connected to the next stage.

FIG. 22 shows an example of the program list of the SFC diagram based on the single flow shown in FIG. In FIG. 22, reference numeral 26 denotes a process operation start command ST.
An operation key corresponding to L, an operation key 27 for a symbol S corresponding to a process number, and a numeric key 28 for inputting a process number, generally provided with numeric keys corresponding to decimal values from 0 to 9. I have. 29 is an operation key 26
This is an execution key for validating a series of STL_S2 instructions corresponding to operations 27 and 28.

Hereinafter, the program is sequentially performed in the same manner.
Is a normally open contact command LD for starting a transition condition, 32 is a process driving command SET, 33 is an output command OUT, 35 is an operation key for the symbol X corresponding to the input of the PLC, and 36 is a PLC.
Are the operation keys for the symbol Y corresponding to the output of.

Reference numeral 540 denotes a process operation start command corresponding to the initial process 600 shown in FIG. 21, an input operation of the transition condition 601 and a process drive command input operation corresponding to the next process 602, 54
Reference numeral 1 denotes a process operation start command corresponding to the process 602 shown in FIG. 21, an internally driven output 603, and a transition condition 604.
21 and the input operation of the process drive instruction corresponding to the next step 605, the input operation 542 of the process operation start instruction corresponding to the step 605 shown in FIG. 21, the input operation of the internally driven output 606 and the transition condition 607, and the next step An input operation of a process driving command corresponding to 608, 543 is a process 608 shown in FIG.
Process operation start command corresponding to, internally driven output 6
09 and the transition condition 610 are input.

(2-3) Description of Function and Operation of Conventional Technique (Single Flow) In the SFC diagram configured as shown in FIG. 21, when the PLC is powered on, the process 600 is active and the transition condition 601 is conductive. Then, the step 602 becomes active and the output 603 operates. Thereafter, in this SFC diagram, the activation of the step 605 is sequentially performed according to the transition condition 604 and the activation of the step 608 is sequentially performed according to the transition condition 607, and accordingly, the previous step is sequentially deactivated. In this SFC diagram, unlike the conventional example shown so far, the process numbers are not continuous, and the program is performed with an arbitrary jump number.

In the program list shown in FIG. 22, the contact command LD 30 is programmed before the process drive command SET 32, and functions as a transition condition in combination with the process start command STL 26. In the input operation 540, the start of the initial process 600 is defined, and the transition condition 601 in this process and the driving of the next process 602 activated by this are instructed.

In the input operation 541, the start of the step 602 is defined, and the transition condition 604 in this step and the driving of the next step 605 activated by this are instructed. The input operation 542 defines the start of the step 605, the transition condition 607 in this step, and the next step 6 activated by this.
08 is instructed. In the input operation 543, the step 608 is executed.
Is defined, and a transition condition 610 to the next step in this step is specified.

In this program list, the transition condition, the process drive command SET · 32 and the process operation start command STL · 2
6, the basic form of the SFC diagram is input as a command list, but the SFC shown in FIG. 17 and FIG.
Unlike the example of the FC diagram, the process numbers have no continuity and the jump numbers are used.

[0056]

[Problems to be solved by the invention]

(1) Description of Problems of the Prior Art As is apparent from the above description, the conventional program creating apparatus individually performs a transition process for each state from the initial process to the start of the branch when designating a selective branch, and at the time of merging, After performing the driving process in the final process for each branch, a transition process to the merging process is performed for each final process of each branch.

For the designation of the translational branch, the transition process for each state at the start of the branch from the initial process is performed collectively. At the time of the merge, the driving process in the final process is performed for each branch, and then the merge process is performed. The migration process is performed collectively.

As described above, if the operator himself creates a program while considering the input rules and order, and then creates a conventional program for inputting each process and command, the process driving command and process operation which are important for program creation are important. If the input order of the start command and the input rules for branching and merging according to the SFC shape are wrong, or if the SFC diagram is not established due to the omission of each command, the sequence control program will not be executed as designed. was there.

As a basic expression of the SFC diagram, a step driving command SET 32 of a coil command element for driving a process according to a transition condition from above and a process operation start command which is a contact element for a process of driving a load. Since the STL 26 is required repeatedly for each process, there is a problem that the input load other than the original sequence control program is large.

In order to reduce such an input burden, an SFC diagram is drawn on a large screen and is automatically converted into a language executable by the PLC. However, there is a problem that it takes time and effort to draw each of the process diagrams and to show the connections.

(2) Description of the Object of the Invention An object of the present invention is to make it possible for an operator to easily create a program of the SFC system without being conscious of the processing order of the program. In addition, in an instruction-based small and inexpensive program creating device, the structure designation work of the SFC diagram is performed by regularly inputting a process drive command and a process operation start command required by the operator when expressing the SFC diagram. It is another object of the present invention to provide a program creating apparatus capable of preventing mistakes in creating a program and improving the efficiency of an input operation.

A second object of the present invention is to cope with complicated input rules used in selective branching and translational branching, and if the process numbers are consecutive numbers, they are automatically numbered, and are skipped numbers by designation. It is another object of the present invention to obtain a program creating apparatus that can easily create a program.

[0063]

According to a first aspect of the present invention, there is provided a program creating apparatus for designating a structure of a process step type program applied to a programmable controller.
Initial process instruction means for instructing the initial process by a process number,
Dependent step designating means for designating each step dependently connected to the initial process in the program processing order by a process number, step number designating means for designating the number of dependent steps, and designated by the respective designating means. A process shape memory for storing the contents of the process as a process shape, and a process operation start command or a process change in accordance with the shape of the process step type program to actuate the current process to deactivate and activate the next process. And an adding means for adding each process number read from the process shape memory to the process drive command.

According to a second aspect of the present invention, there is provided a program creating apparatus comprising a first instruction means for instructing a branch condition of a plurality of subordinate processes which are branched and connected from an initial process and for indicating a joining condition. It is.

According to a third aspect of the present invention, there is provided a program creating apparatus including second instruction means for instructing a plurality of subordinate steps to be connected in parallel and executed in parallel from the initial step.

According to a fourth aspect of the present invention, there is provided a program creating apparatus, comprising: a pseudo instruction inserting means for inserting a pseudo instruction at a position for inputting a transition condition instruction for executing a process driving instruction and at a position for inputting an output driving program in a process. It is provided.

According to a fifth aspect of the present invention, when the number of each subordinate process connected to the initial process is indicated by a numerical value, the program creating device is connected next with reference to the leading process number of the subordinate process. A first batch generation means for automatically generating the entire process configuration by sequentially adding 1 to the process number and collectively generating a process operation start command and a process drive command corresponding to each process. It is a thing.

According to a sixth aspect of the present invention, when an arbitrary process number is added to each of the subordinate processes connected to the initial process, each of the added processes is independent of the process number specified at the head. The whole process is constituted by the numbers, and a second batch generation means for batch-generating a process operation start command and a process drive command corresponding to each process is provided.

[0069]

BEST MODE FOR CARRYING OUT THE INVENTION

Embodiment 1 FIG. (1) Detailed Description of Configuration of First Embodiment FIG. 1 shows a PLC and a first embodiment of the present invention for the PLC.
1 is a block diagram showing a configuration of a program creating device according to the present invention. In the figure, reference numeral 40A denotes a program creation device housed in one housing. This program creation device 40A
Is transferred by the first microprocessor 41 operating according to the procedure defined by the program stored in the system memory 42 and the operation of the operation key 46, or from the programmable controller 60 via the cable 70 and the communication interface 50. A sequence program memory 43 in which the stored sequence program is stored, a process shape memory 44 for storing a process shape as a means for realizing the present invention, a process operation start command output by a command batch generation means, Then, a process drive command for inactivating the current process and activating the next process, a process program memory 45 for storing a process operation start command and a process number associated with the process drive command, and a key interface 47 are provided. Sequence to one microprocessor 41 It is composed of operation keys 46 for inputting command keys and numerical keys, etc., a display 46 to which display data is sent from the first microprocessor 41 via the screen controller 49, and a communication interface 50 for exchanging data with the PL 60A. ing. These components are connected to the first microprocessor 41 via a bus. The first microprocessor 41 and the system memory 42 are provided with initial process instruction means, subordinate process instruction means, number of steps instruction means, first and second instruction means, pseudo instruction insertion means, first and second batch generation means. Constitute.

60A is a PLC housed in one housing
It is. The PLC 60A includes a second microprocessor 61 that operates according to a procedure defined by a program stored in the system memory 62, a sequence program memory 63 in which the contents of sequence control are written by the program creation device 40A, and an input / output of the PLC 60A. ON / O
The FF information is stored, a device memory 64 constituting a timer, a counter, a data register, and the like, and a large number of input signal switches 65 provided to the second microprocessor 61.
, An output interface 68 for connecting a large number of output loads 67 to the second microprocessor 61, and a communication interface 69 serially connected to the communication interface 50 of the program creation device 40A via a cable 70. ing. still,
These components are bus-connected to the second microprocessor 61.

FIG. 2 shows the program creating device 40 shown in FIG.
It is an external view which shows an example of A. Program creation device 40
On the front panel of A, a display 48 for displaying a sequence program, numerical keys 28 including execution keys 29 and 0 to 9, and operation keys 30 to 36 and 80 to 87 are incorporated. This device also has a cable 70 for connecting the programmable controller 60A shown in FIG.

FIG. 3 shows a key operation list for inputting each instruction to the process shape memory 44 (see FIG. 1) in the present embodiment in order to form the SFC diagram by selective branching and merging shown in FIG. This is an example.

In FIG. 3, reference numeral 80 denotes an IS key as an example of an operation means for instructing an initial process, 81 denotes an SF key as an example of an operation means for instructing a process branch with condition selection, and 82 denotes an operation key. An SE key 83 is an example of an operating means for instructing a merging process to be joined to an arbitrary merging process by condition matching of a plurality of process branches connected in cascade by a plurality of process branches. K key, which is an example of an operation means for indicating the number of processes, 8
Reference numeral 4 denotes an END key which is an example of an operation means for instructing the end of the input to the process shape memory 44.

Reference numeral 140 denotes an example of a key input operation for instructing an initial process using the IS key 80, the S key 27, the numerical key (0) 28, and the execution key 29, which is IS_S0_Execution. 141 is an example of a key input operation for instructing the first row process using the SF key 81, the S key 27, the numerical key (10) 28, and the execution key 29, and is SF_S10_execution. Reference numeral 142 denotes an example of a key input operation for instructing the number of cascade processes to be cascade-connected to the first column process using the K key 83, the numerical key (3) 28, and the execution key 29, and is K_3_execute. Reference numeral 143 denotes an example of a key input operation for instructing the second row process using the SF key 81, the S key 27, the numerical key (20) 28, and the execution key 29, which is SF_S20_Execution. 144 is a K key 83, a numerical key (2) 28,
An example of a key input operation for instructing the number of cascade processes to be cascade-connected to the second row process using the execution key 29 is K_2_.
Execution. Reference numeral 145 denotes an example of a key input operation for instructing selection and merging using the SE key 82, the S key 27, the numerical key (30) 28, and the execution key 29, and is SE_S30_Execution.

FIG. 4 is a key operation list for inputting each instruction to the process shape memory 44 (see FIG. 1) according to the present embodiment in order to form the SFC diagram by translational branching and merging shown in FIG. This is an example. In FIG.
Is an example of an operation means for instructing an initial process.
A key 87 is a PF key which is an example of an operation means for instructing a translational branch without condition selection, and an operation 86 is an operation for instructing a merging step of a process sequence cascaded by a plurality of process branches to an arbitrary merging process. PE key as an example of means, 8
Reference numeral 3 denotes a K key which is an example of operation means for instructing the number of cascade processes to be connected in cascade starting from the process number designated immediately before, and 84 denotes an operation means for instructing the end of the input to the process shape memory 44. This is an example of an END key.

Reference numeral 150 denotes an example of a key input operation for instructing an initial step using the IS key 80, the S key 27, the numerical key (1) 28, and the execution key 29, which is IS_S1_Execution. Reference numeral 151 denotes an example of a key input operation for instructing the first row process using the PF key 87, the S key 27, the numerical key (40) 28, and the execution key 29, which is PF_S40_execution. Reference numeral 152 denotes an example of a key input operation for instructing the number of cascade processes to be cascade-connected to the first column process using the K key 83, the numeric key (3) 28, and the execution key 29, and is K_3_execute. Reference numeral 153 denotes an example of a key input operation for instructing the second row process using the PF key 87, the S key 27, the numerical key (50) 28, and the execution key 29, which is PF_S50_execution. 154 is a K key 83, a numerical key (2) 28,
An example of a key input operation for instructing the number of cascade processes to be cascade-connected to the second row process using the execution key 29 is K_2_.
Execution. Reference numeral 155 denotes an example of a key input operation for instructing a parallel merging to the merging step using the PE key 86, the S key 27, the numerical key (60) 28, and the execution key 29;
S60 — Execution.

FIG. 5 is an example of a key operation list when each instruction is input to the process shape memory 44 in order to form the SFC diagram according to the single flow shown in FIG. FIG.
In the figure, reference numeral 80 denotes an IS key as an example of an operation means for designating an initial step, and reference numeral 85 denotes a TS which is an example of an operation means for designating a head step number of a flow without branching.
A key 83 is an K means as an example of operating means for instructing the number of cascade processes, and an END 84 is an example of operating means for instructing the end of the input to the process shape memory 44.
Is the key.

Reference numeral 160 denotes an example of a key input operation for instructing an initial process using the IS key 80, the S key 27, the numerical key (2) 28, and the execution key 29, and is IS_S2_Execution. Reference numeral 161 denotes an example of a key input operation for instructing a first row process cascading to the initial process using the TS key 85, the S key 27, the numeric key (70) 28, and the execution key 29.
S_S70_ execution. 162 is an S key 2 for instructing a cascade process to the process number designated immediately before.
7. S75_Execution is an example of a key input operation using the numeric key (75) 28 and the execution key 29. Reference numeral 163 denotes an S key 27, a numerical key (77) 28, and an execution key 29 for instructing a cascade process with respect to the process number designated immediately before.
Is an example of a key input operation using S77_ executed.
164 is a K key 83, a numerical key (3) 28, and an execution key 2
9 is an example of a key input operation for instructing the number of cascading steps using K_3_9.

FIG. 6 shows an example of the internal structure of the process shape memory 44 shown in FIG. In the figure, reference numeral 120 denotes parameter data in which information relating to the start and end of the process is stored;
Is the first column process data storing information relating to the process column connected immediately below the initial process number, and 122 is the first column process connected immediately below the initial process number, with or without a conditional branch or condition Second column process data for storing information on a second process column when a branch sequence is designated;
An eighth reference numeral 123 stores information on the last process sequence of the sequentially designated process sequence following the second column process sequence data 122.
The first column process data 121, the second column process data 122, and the eighth to eighth column process data 123 have the same internal structure.

In the parameter data 120, reference numeral 124 denotes FIG.
3 is a program insertion start address indicating where the program shown in FIG. 1 is stored in the sequence program memory 43 shown in FIG. 1, and 125 is an instruction 140 shown in FIG.
(IS_S0_execution) is an initial process number storing the initial process number S0, 126 is a merging process number storing the merging process specified by the instruction 145 (SE_S30_execute) shown in FIG. 3
Is a merged format in which the connection method with the previous process specified by the instruction 145 (SE_S30_execution) shown in FIG.

In the first column process data 121, 128 is the data shown in FIG.
The first column process head number 129 in which the first column process head number S10 specified by the instruction 141 (SF_S10_execution) shown in FIG.
The branch format in which the connection method with the initial process specified by (SF_S10_execution) is stored. Reference numeral 130 stores the number of processes connected in cascade to the immediately preceding process number specified by the instruction 142 (K_3_execution) shown in FIG. The number of cascaded processes 131 and 132 are the process numbers connected in cascade to the first column process head number 128 calculated by the procedure defined by the process shape input program in the system memory 42 shown in FIG. Cascaded process numbers (1 to n) to be stored
It is.

FIG. 7 shows a process shape memory 44 as a means for realizing the present invention by one example of the key operation shown in FIG.
The pseudo SFC program list calculated and generated by the microprocessor 41 by the batch generation means of the instructions in the system memory 42 is expressed as an SFC diagram by the selective branch shown in FIG.

In FIG. 7, reference numeral 1 denotes a process of process number S0;
4 is a step of step number S10, 7 is a step of step number S11, 10 is a step of step number S12, and 15 is a step number of S2.
Step 0, step 18 is step number S21, step 22 is step number S30, which are configured in the same manner as the steps in the SFC diagram of the selective branch shown in FIG. Reference numeral 170 denotes a transition condition marker that simulates the input position of the transition condition, and 171 denotes a drive coil marker that simulates the instruction input position of the output driven in the process.

FIG. 8 shows SF by the translation branch shown in FIG.
The C diagram is a diagram in which the pseudo SFC program list generated by the same means as in FIG. 7 is represented as an SFC diagram by an example of the key operation shown in FIG.

In FIG. 8, reference numeral 400 denotes the step of step number S1, 402 denotes the step of step number S40, 405 denotes the step of step number S41, 408 denotes the step of step number S42, 410
Denotes a step of step number S50, 413 denotes a step of step number S51, and 416 denotes a step of step number S60. The configuration of these steps is the same as each step of the SFC diagram of the translational branch shown in FIG. Reference numeral 170 denotes a transition condition marker that simulates the input position of the transition condition, and 171 denotes a drive coil marker that simulates the instruction input position of the output driven in the process.

FIG. 9 shows the SFC diagram of the single flow shown in FIG. 21 by using an example of the key operation shown in FIG.
7 is a representation of a pseudo SFC program list generated by the same means as in FIG.

In FIG. 9, reference numeral 600 denotes a step of step number S2, 602 denotes a step of step number S70, 605 denotes a step of step number S75, and 608 denotes a step of step number S77.
The configuration of these steps is the same as each step of the single flow SFC diagram shown in FIG. Reference numeral 170 denotes a transition condition marker that simulates the input position of the transition condition.
Reference numeral 1 denotes a drive coil marker that artificially indicates a command input position of an output driven in the process.

FIG. 10 is a pseudo SFC program list generated by the microprocessor 41 calculating and generating the SFC diagram of the selective branch / merge shown in FIG. 17 by the instruction batch generation means in the system memory 42 shown in FIG. FIG.
Is a list that is the basis of the SFC diagram expression shown in FIG.

FIG. 10 shows a transition condition marker that simulates the input position of the transition condition inserted on the generated program list and a drive coil that simulates the instruction input position of the output driven in the process. FIG. 18 is a diagram for describing a means for performing an editing operation on a marker to complete a target SFC diagram (FIG. 17).

In FIG. 10, 170 is an automatically generated transition condition marker, 171 is an automatically generated drive coil marker, 172 is an automatically generated process drive command, and 173 is an automatically generated process operation start command.

Reference numeral 330a denotes a transition condition instruction added to complete the SFC diagram shown in FIG. 17, 330b denotes a drive output instruction added to complete the SFC diagram shown in FIG. 17, and 330c denotes a process-specific additional instruction. .

FIG. 11 shows S by the translational branch shown in FIG.
This is a pseudo SFC program list generated from the FC diagram in the same manner as in FIG. 10, and is a list on which the SFC diagram representation shown in FIG. 8 is based. FIG. 11 is a diagram for explaining means for completing the SFC diagram shown in FIG. 19 by the same editing work as in FIG.

In FIG. 11, 170 is an automatically generated transition condition marker, 171 is an automatically generated drive coil marker, 172 is an automatically generated process drive command, 173 is an automatically generated process operation start command, and 331a is a process operation start command. A transition condition command added to complete the SFC diagram shown in FIG. 5,
Reference numeral 331b denotes a drive output instruction added to complete the SFC diagram shown in FIG.

FIG. 12 shows an SFC diagram based on the single flow shown in FIG. 21 and a pseudo SF generated in the same manner as in FIG.
9 is a C program list, which is a list on which the SFC diagram expression shown in FIG. 9 is based. FIG. 12 is a diagram for explaining means for completing the SFC diagram shown in FIG. 21 by the same editing work as in FIG.

In FIG. 12, 170 is an automatically generated transition condition marker, 171 is an automatically generated drive coil marker, 172 is an automatically generated process drive command, 173 is an automatically generated process operation start command, and 332a is a process operation start command. A transition condition command 332b added to complete the SFC diagram shown in FIG. 19 is a drive output command added to complete the SFC diagram shown in FIG.

(2) Detailed operation and operation of the embodiment: In FIG. 1, ON / OFF of a number of input switches 65
The information is stored in the device memory 64 via the input interface 66 and the second microprocessor 61. Further, a large number of external loads 67 are stored in the second based on the contents of the sequence program memory 63 and the contents of the device memory 64.
And ON / OFF control via the output interface 68.

On the other hand, the sequence command input by the operation keys 46 of the program creating device 40A is transferred to the first microprocessor 41 via the key interface 47, where the sequence determined by the key input processing program in the system memory 42. Is displayed on the display 48 via the screen controller 49 as a program flow based on the SFC diagram.

The operation result of the first microprocessor 41 is written in the sequence program memory 43 or the second microprocessor 61 is connected to the second microprocessor 61 via the communication interface 69 of the PLC 60A by the cable 70 connected to the communication interface 50. Is then processed by a procedure determined by the communication program in the system memory 62 and written into the sequence program memory 63 as a sequence program.

The process shape memory 44 is a memory provided as a means for realizing the present invention. The process shape memory 44
Instructions input from the operation keys 46 via the key interface 47 are stored as process shape information according to a procedure defined in a process shape input program in the system memory 42. This information is calculated by the microprocessor 41 according to the procedure specified in the instruction generation program in the system memory 42, and means for realizing the present invention by collectively generating a process operation start command, a process drive command, and a process number associated therewith. Is written in the process program memory 45 provided as.

The contents stored in the process program memory 45 are as follows.
The data is written to a predetermined address of the sequence program memory 43 or transferred to the second microprocessor 61 via the cable 70 connected to the communication interface 50 and the communication interface 69, where it is determined by the communication program in the system memory 62. The arithmetic processing is performed according to the above procedure, and the result is written to a predetermined address of the sequence program memory 63.

The program input operation in the program creating device 40A configured as shown in FIG. 2 is performed by sequentially inputting the keys prepared for the operation keys 46 based on the sequence program list, and finally executing the sequence program by the execution key 29. Confirm.

The process shape designating means of the SFC diagram by selective branch / merge shown in FIG.
This is input using 0A. Instruction 140 (IS_
IS key 80 used for S0_execution) and instruction 141 (S
SF key 81 used for F_S10_ execution), instruction 14
K key 83 and instruction 1 used for 2 (K_3_ execution)
SE key 82 used for 45 (SE_S30_ execution)
Is the operation key 4 of the program creation device 40A shown in FIG.
No. 6.

Each key input operation is used for the next designation in the SFC diagram by the selective branch shown in FIG. The instruction 140 (IS_S0_execution) indicates the instruction of the initial step 1 shown in FIG.
0_execution) indicates the first branch selection branch connection and the first step 4 shown in FIG. 17, and the instruction 142 (K_3_execution) indicates the number of steps cascaded including the first column selection branch first step shown in FIG. Three are specified, and the instruction 143 (SF_S20
_ Execution) indicates the second branch selection branch connection and the first step 15 shown in FIG. 17, and the instruction 144 (K_2_ execution) indicates the number of cascaded steps including the first step of the second column selection branch shown in FIG. Two are specified, and an instruction 145 (SE_S30
_Execution) indicates that the last step of the first column selection branch and the last step of the second column selection branch merge into the step 22 by condition selection.

The process shape designating means of the SFC diagram by the translational branch shown in FIG. 4 is inputted by using the program creating device 40A shown in FIG.
IS key 80 used for 0 (IS_S1_ execution), PF key 8 used for instruction 151 (PF_S40_ execution)
7. K key 83 used for instruction 152 (K_3_ execution)
And P used for instruction 145 (PE_S30_ execution)
The E key 86 is operated by the operation keys 46 of the program creating device shown in FIG.

Each key input operation is used for the next designation in the SFC diagram by the translational branch shown in FIG. The instruction 150 (IS_S1_ execution) indicates the instruction of the initial step 400 shown in FIG.
In step S40_execution), the translation branch connection in the first column and the leading step 402 shown in FIG. 19 are instructed. In the instruction 152 (K_3_execution), the number of steps cascaded including the translation step in the first column shown in FIG. Instruct three, instruction 153 (PF_
In S50_execution), the translation branch connection in the second column and the leading step 410 shown in FIG. 19 are instructed, and the instruction 154 (K_2_
In execution), two cascaded steps including the first step of the translation branch in the second column shown in FIG. 19 are specified, and the instruction 155 (PE
In _S60_ execution), when the transition condition is input in a state where both the last step of the first row of the translational branch and the last row of the second row of the translational branch are activated, it is instructed to join the step 416. I have.

The process shape designating means of the SFC diagram by the single flow shown in FIG. 5 is input by using the program creating device 40A shown in FIG. 2 similarly to the above operation, and the IS key used for the instruction 160 (IS_S2_execute) is used. 8
0, TS used for instruction 161 (TS_S70_ execution)
The key 80 and the K key 83 used for the command 164 (K_3_ execution) are the operation keys 4 of the program creating apparatus shown in FIG.
No. 6.

Each input operation is used for the next designation with respect to the single flow SFC diagram shown in FIG. In the instruction 160 (IS_S2_ execution), FIG.
The instruction of the initial step 600 shown in FIG.
_S70_execution) shows the instruction of step 602 as a flow without branching to the initial step 600 shown in FIG. 21. In the instruction 162 (S75_execution), the step 605 shown in FIG. In the instruction 163 (S77_execution), the instruction 163 (S77_execution) indicates that the step 608 shown in FIG. 21 is cascade-connected to the immediately preceding step 605 by the jump number.
The instruction 152 (K_3_ execution) indicates that the number of cascade processes to be cascade-connected to the first column process is three.

For example, if the program is programmed as S70-S75-K3, a step number is specified for two of the three steps, and the remaining steps are S76 following S75.
Similarly, if it is S70-K3, the process number is S70-S7.
This means that the serial number of 1-S72 has been designated. The method of specifying the jump number or the continuous number is the same for the flow after the selective branch or the translational branch.

The operation means of the process shape shown in FIGS. 3, 4 and 5 implements the present invention via the key interface 47 in accordance with the procedure defined in the process shape input program in the system memory 42 shown in FIG. It is stored in the process shape memory 44 provided as a means for realizing the process. How this operates and is stored in the process shape memory 44 will be described with reference to flowcharts shown in FIGS. In addition,
The numbers shown in parentheses in FIGS. 13 and 14 correspond to the numbers shown in FIG. 6, and indicate locations where this step operates.

In FIG. 13, steps 200, 201, 202, and 203 are steps for processing the insertion position of the generation program and the initial process number based on the determination of the start of the shape instruction operation.
0, if an arbitrary initial process number is input by IS_Sxxx, in step 201, the program insertion address 124 on the process shape memory 44 shown in FIG.
An example of the operation means shown in FIG. 4 or 5 writes the started sequence program address.

In step 202, the process number Sxxx input in step 200 is written as the initial process number in the initial process number 125 on the process shape memory 44 shown in FIG. In step 203, when a plurality of branching steps are connected to the initial step, 0 is written to a branch number counter for counting the number of branches and initialized.

Steps 204, 220, 221 and 222 are steps for processing the writing of the head process number of each process sequence and the writing of the connection method for the initial process based on the judgment of the start of the selective branch operation. In step S22, when an arbitrary process number is input in SF_Sxxx, it is determined that the selective branch flow has started, and
The result of adding 1 to the branch number counter by 0 is transferred to a branch column register A (not shown).

In step 221, the process number Sxxx input in step 204 is recognized as the head number of the process sequence indicated by the branch sequence register A. For example, when S10 is input as the process number, the branch sequence register A = 1 If so, it is determined that the process is the first column process, and 10 is written to the first column process head number 128 in the process shape memory 44 shown in FIG.

At step 222, the connection method of the A-th row process to the initial process number 125 on the process shape memory 44 shown in FIG.
It is determined that the process is a column process, and 1 indicating a selective branch is written in the branch format 129 on the process shape memory 44 shown in FIG.

Steps 223, 224, and 271 are steps for judging whether the process number cascade-connected to the first process is a continuous number or a skipped number. In step 224, step 225, step 226, step 227, step 228, and step 229, the cascaded process numbers are generated as serial numbers, and the process shape memory 44
Step. Step 2 in this process
At 23, 0 is written to a cascade process counter for counting the number of cascade processes connected in cascade to the Ath column process, and is initialized.

In step 224, when an arbitrary numerical value is input in K □□□, K □□□ is changed to A-th in step 225.
It recognizes the number of cascade processes connected in cascade to the column process, and for example, when K3 is input as the number of cascade processes, the branch column register A
If = 1, it is determined that the process is the first column process, and 3 is written in the cascade process number 130 on the process shape memory 44 shown in FIG.
Further, it is determined that the mode is a mode in which the consecutive process numbers for the number of processes designated by K are automatically numbered.

In step 226, 1 is set in the cascade process counter.
Is transferred to a cascade number register B (not shown). In step 227, the process number of the cascade process is calculated by adding 1 to the process number Sxxx input in step 204, and then transferred to a cascade process number register C (not shown). When S10 is input, the cascade process number register C = 11 becomes the calculation result.

In step 228, since the cascade process number C is written into the cascade process position indicated by the cascade number register B of the process sequence indicated by the branch number register A, for example, the branch sequence register A = 1, the cascade number register B = 1. If the cascade process number register C = 11, it is determined that the second process number of the first column process is 11, and the process shape memory 44 shown in FIG.
Cascade process number 1: 131 of the first column process data 121 above
11 is written to the cascading process number 1: 131 indicated by the cascading number register B in .about.n: 132.

In step 229, the end of the process is compared by comparing the K □□□ input in step 224 with the current process number of the cascade process number. If the process number does not satisfy the condition, the connection is made to the next stage. Step 226 is processed to process the cascade process number, and if the conditions are matched, step 2 is executed.
04 is processed.

Step 224, step 271, step 272, step 273, step 274, step 275, and step 276 are steps in which the cascaded process numbers are generated as skip numbers and written into the process shape memory 44. In this processing, in step 224, the judgment condition K □
If □□ does not match, execute step 271 to execute Sxxx.
When an arbitrary process number is input in step, it is determined that the process number is a skip number input mode.

In step 272, 1 is set in the cascade process counter.
Is added, and the processing target is shifted to the next cascade process.
In step 3, the process number determined in step 271 is written into the process shape memory 44 as the process number of the cascade process. In step 274, when an arbitrary process number is input as Sxxx, the process number connected to the next process is determined. Judge and step 272
Is repeatedly executed, and if the judgment conditions Sxxx do not match, the judgment condition K □□□ is compared in step 275 and an arbitrary numerical value is input. It is written into the process shape memory 44 as a number.

Steps 250, 254, 255 and 256 are steps for processing the writing of the head process number of each process sequence and the writing of the connection method for the initial process based on the judgment of the start of the translational branch operation. Is executed when the determination condition in step 204 and the input condition do not match. When an arbitrary process number is input in PF_Sxxx, it is determined that the translational branch flow has started, and 1 is added to the branch number counter in step 254. The result is transferred to the branch number register A.

In step 255, the process number Sxxx input in step 250 is recognized as the head number of the process sequence indicated by the branch number register A. For example, when S40 is input as the process number, the branch sequence register A = 1 If so, it is determined that the process is the first column process, and 40 is written to the first column process head number 128 in the process shape memory 44 shown in FIG.

In step 256, the connection method of the A-th column process to the initial process number 125 on the process shape memory 44 shown in FIG.
If it is 1, 2 indicating a translational branch is written into the branch form 129 on the process shape memory 44 shown in FIG. 6, and thereafter, step 223 is executed in the same manner as the above-mentioned selective branch.

Steps 270, 277, 278, and 279 are steps for processing the writing of the head process number of the process sequence and the writing of the connection method for the initial process based on the determination of the start of the single flow operation. The process is executed when the determination condition in step 250 and the input condition do not match. When an arbitrary process number is input in TS_Sxxx, it is determined that a single flow has started, and the result of adding 1 to the branch number counter in step 277 is determined. Transfer to the branch number register A.

In step 278, the process number Sxxx input in step 270 is recognized as the head number of the A-th row process. For example, if S70, the head number of the first row in the process shape memory 44 shown in FIG. Write 70 for number 128. In step 279, the connection method of the A-th row process to the initial process number 125 on the process shape memory 44 shown in FIG. 6 is set to no branch, and the single flow is performed for the branch form 129 on the process shape memory 44 shown in FIG. 0 which means
Is written, and thereafter, as in the case of the above-described selection branch, step 22
Execute 3.

Steps 205, 210, and 211 are steps for processing the writing of the joining process number of the process sequence and the writing of the connection method for the joining process based on the determination of the start of the operation of joining the selected and branched process sequences.

Step 205 is executed when the judgment condition of step 270 does not match the input condition, and SE_Sxx
When an arbitrary process number is input by ×, step 210 is executed, and the process number Sxxx input at step 205 is written as a merge process number in the merge process number 126 on the process shape memory 44 shown in FIG. In step 211, the method of connection between the merging step and the preceding step is set as a selective merging, and 1 indicating a selective merging is written in the merging form 127 in the process shape memory 44.

Steps 251, 252, and 253 are steps for processing the writing of the merge step number of the process line and the writing of the connection method for the merge step based on the determination of the start of the operation for merging the translationally branched process lines.

Step 251 is executed when the judgment condition of step 205 and the input condition do not match, and PE_Sxx
When an arbitrary process number is input with ×, step 252 is executed, and the process number Sxxx input in step 251 is written as the merge process number into the merge process number 126 on the process shape memory 44 shown in FIG. In step 253, the connection method between the merging step and the preceding step is defined as a translational merging, which means a translational merging with respect to the merging type 127 in the process shape memory 44.
Write.

Step 206 is a step for judging the end of the shape instruction operation. Step 206 is executed when the determination condition of step 205 and the input condition do not match. Step 204 and subsequent steps are repeatedly executed until END is input.
The instruction to 4 is ended.

As described above, the contents instructed by the operation means having the process shapes shown in FIGS.
It is developed into information on the process shape required for generating the FC program, and is stored in the process shape memory 44 shown in FIG.

Based on the shape information of the SFC diagram expanded in the process shape memory shown in FIG. 1 by the above-described operation, the batch generation means of the instructions in the system program 42 shown in FIG. As the pseudo SFC program list shown in FIG.
73, a process operation start instruction 172, and a transition condition marker 170
And a drive coil marker 171 are generated on the process program memory shown in FIG.

Thereafter, the generated pseudo SFC program list is transferred to the second microprocessor 61 via the communication interface 69 via the cable 70 connected to the sequence program memory 43 or the communication interface 50 shown in FIG. The arithmetic processing is performed according to the procedure defined by the communication program in the system memory 62, and the processing is transferred to the sequence program memory 63.
This arithmetic processing is executed for the position of the program address 124 on the process shape memory 44 shown in FIG.

When the program list transferred to the sequence program memory 43 or the sequence program memory 63 is an SFC by selective branch, the SFC shown in FIG.
As shown in the FC diagram, the skeleton of the SFC is formed by the arrangement of the process drive command and the process operation start command conforming to the complicated input rules regarding the selective branch / merge. For example, in order to complete the SFC diagram by the selective branch shown in FIG. 17, the pseudo program list shown in FIG. 10 is read by a small and inexpensive program creating apparatus, and each of the transition condition markers LD_M999 in the transition condition 170 is targeted. A different transition condition command 330a is input for each process. For the drive output driven inside the process, a drive output command 330b for each process is written with the drive output marker OUT_M999 in the output 171 as a target, so that a program based on the pseudo SFC program list is performed. .

Similarly, in the case of the SFC diagram based on translational branching, as shown in the SFC diagram in FIG. 8, the SFC skeleton is arranged by arranging a process driving instruction and a process operation start instruction in accordance with complicated input rules for translational branching and merging. Are formed. For example, in order to complete the SFC diagram by translation shown in FIG. 19, a different transition condition instruction 331a for each process is set for the transition condition marker LD_M999 in the transition condition 170 in the pseudo program shown in FIG. input. With respect to the drive output driven inside the process, a program is performed by writing a drive output command 331b for each process with the drive output marker OUT_M999 in the output 171 as a target.

For example, in the case of a single flow SFC diagram, the transition condition 17 is applied to the pseudo program shown in FIG.
A different transition condition command 332a is input for each process with the transition condition marker LD_M999 in 0 as a target. As for the drive output driven inside the process, a program is executed by writing the drive output command 332b for each process individually with the drive output marker OUT_M999 in the output 171 as a target.

As described above, according to the present invention, the process drive command and the process operation start command constituting the skeleton of the SFC diagram, the transition condition differently handled for each process, and the pseudo command indicating the command input position such as the drive output. In order to automatically generate a pseudo SFC program into which an SFC has been inserted, this is read out as a model of the SFC program, and only unique control conditions such as transition conditions and drive outputs required in each process, such as transition conditions and drive outputs, are added to the pseudo instruction position. Program can be created in accordance with the input rules of

As a result, the work of designating the structure of the SFC diagram can be performed easily, so that mistakes in program creation can be prevented, and the efficiency of input work can be improved. Also,
Compatible with complicated input rules used in selective branching and translational branching, and the process number has a degree of freedom to handle either a continuous number or a skipped number.

Embodiment 2 (3.1) Description of Second Embodiment In the configuration diagram shown in FIG. 1 of the first embodiment, as a means for realizing the present invention, a process shape memory 44 for storing a process shape, and a command output by a batch generation unit for instructions. In addition, a process operation start command, a process drive command that operates in accordance with the process shift, inactivates the current process and activates the next process, and a process number associated with the process operation start command and the process drive command are stored. The process program memory 45 is connected to the bus in the housing of the program creation device 40.

According to the present embodiment, as shown in FIG.
This is a structure in which a bus is connected to the second microprocessor 61 in the housing of the LC 60B. Program creation device 40B
Are input to the first microprocessor 41 via the key interface 47, where they are processed according to a procedure defined by a key input processing program in the system memory 42.

The result of the arithmetic processing is transmitted to the communication interface 50.
Is transferred to the second microprocessor 61 via the communication interface 69 of the PLC 60B. Then, the second microprocessor 61 performs an arithmetic processing on the transferred arithmetic processing result according to a procedure determined by a communication program in the system memory 62, and instructs the process shape memory 44 to store the process shape, and Instructions in the system memory 62 are stored in the process program memory 45 by batch generation means.

Embodiment 3 (3.2) Description of Embodiment 3 The data input screen shown in FIG. 16 is an example of a case where the process shape instruction operation of the SFC diagram in Embodiment 1 is performed on a large screen. In the present embodiment, the process shape memory 44 for storing the process shape shown in the configuration diagram of FIG. 1, the process operation start command output by the command batch generation means and the process operation are activated to inactivate the current process. In addition, a process program memory 45 for storing a process drive command for activating the next process and a process number associated with the process drive command is connected to the inside of the housing of the program creating apparatus having a large screen. Therefore, the process shape instruction operation of the SFC diagram shown in FIGS. 3, 4 and 5 is displayed on the screen, and the SFC diagram representation of the pseudo program list shown in FIGS. 7, 8 and 9 is displayed on the screen. And edit it.

Embodiment 4 (3.3) Description of Embodiment 4 The process shape instruction operation of the SFC diagram in Embodiment 1 is as follows.
Although only one shape was designated per instruction, such as an instruction of a selective branch shape, an instruction of a translational branch shape, or an instruction of a single flow shape, this is combined to instruct a selective branch from the middle of a single flow, It is also possible to perform a shape instruction operation for further performing selective branching or translational branching in the middle of the process of selective branching or translational branching.

[0145]

According to the first aspect of the present invention, there is provided a program creating apparatus for providing an initial process instruction means for designating an initial process by a process number when designating a structure of a process step-type program applied to a programmable controller. Subordinate step instructing means for instructing each of the steps which are subordinately connected to the initial step in a program processing order by a step number, step number instructing means for instructing the number of dependent steps, and instructing by each of the instructing means. A process shape memory that stores the contents of the process as a process shape, and a process operation start command or a process shift is activated in accordance with the shape of the process step-by-step program to make the current process inactive and activate the next process. Means for adding each process number read from the process shape memory to the process drive command to be executed, so that the program input order can be easily determined without being aware of the input order. There is an effect that can create a process AyumiSusumukatachi program.

Since the program creating apparatus according to the second aspect of the present invention includes the first instruction means for instructing the branch condition of a plurality of subordinate steps which are branched and connected from the initial process and for indicating the joining condition, In addition, there is an effect that a process step-type program including a selection branch requiring a complicated input rule can be easily created.

Since the program creating apparatus according to the third aspect of the present invention includes the second one-instruction means for instructing a plurality of subordinate steps which are connected in a branch from the initial step and executed in parallel, complicated input rules are provided. There is an effect that a process step type program including a translational branch that requires the above can be easily created.

According to a fourth aspect of the present invention, there is provided a program creating apparatus, comprising: a pseudo instruction inserting means for inserting a pseudo instruction at a position for inputting a transition condition instruction for executing a process driving instruction and at a position for inputting an output driving program in a process. With this arrangement, the operator can easily edit the program even if there is an instruction element that cannot be specified as a process shape in the program.

According to a fifth aspect of the present invention, when the number of each subordinate process connected to the initial process is indicated by a numerical value, the program creating device is connected next with reference to the leading process number of the subordinate process. A first batch generation means for automatically generating the entire process configuration by sequentially adding 1 to the process number and collectively generating a process operation start command and a process drive command corresponding to each process. Therefore, there is an effect that the numbering of the process numbers can be easily performed irrespective of the increase of the process numbers due to the enlargement of the program.

According to a sixth aspect of the present invention, when an arbitrary process number is added to each of the dependent processes connected to the initial process, each of the added processes is independent of the process number specified at the head. Since the whole process is constituted by the numbers, and the second batch generation means for collectively generating the process operation start command and the process drive command corresponding to each process is provided.
There is an effect that any process number corresponding to the skip number can be assigned freely.

[Brief description of the drawings]

FIG. 1 is a configuration diagram of a program creation device according to an embodiment of the present invention and a programmable controller used in combination with the program creation device.

FIG. 2 is an external view of the program creation device in FIG.

3 is a diagram showing an example of a shape instruction operation corresponding to the selective branch / merge in FIG.

FIG. 4 is a diagram illustrating an example of a shape instruction operation corresponding to the translational branch / merge in FIG. 19;

FIG. 5 is a diagram illustrating an example of a shape instruction operation corresponding to the single flow of FIG. 21;

FIG. 6 is a diagram corresponding to FIG. 1, showing an internal structure of a process shape memory as a means for realizing the present invention.

7 is a diagram showing an example of contents of a process program memory in FIG. 1 and representing a sequential function chart of a pseudo program list corresponding to the selective branch / merge in FIG. 17;

8 is a diagram illustrating a sequential function chart of a pseudo program list corresponding to the translational branch / merge in FIG. 19, which is an example of the contents of the process program memory in FIG. 1;

9 is a diagram showing a sequential function chart of a pseudo program list corresponding to the single flow of FIG. 21, which is an example of the contents of the process program memory in FIG. 1;

10 is a diagram showing an example of the contents of a process program memory in FIG. 1 and an example of a pseudo program list corresponding to the selective branch / merge in FIG. 17;

11 is a diagram showing an example of the contents of a process program memory in FIG. 1, and showing an example of a pseudo program list corresponding to the translational branch / merge in FIG. 19;

12 is a diagram showing an example of the contents of a process program memory in FIG. 1 and an example of a pseudo program list corresponding to the single flow in FIG. 21;

FIG. 13 is a flowchart illustrating an example of an operation of the shape instruction operation in FIGS. 3, 4, and 5;

FIG. 14 is a flowchart continued from FIG. 13 for explaining an example of an operation of the shape instruction operation in FIGS. 3, 4, and 5;

FIG. 15 is a configuration diagram of a program creation device and a programmable controller used in combination with the program creation device according to Embodiment 2 of the present invention.

FIG. 16 is a diagram showing a shape instruction screen according to Embodiment 3 of the present invention.

FIG. 17 is a diagram illustrating an example of a sequential function chart of selective branching / merging.

18 is a diagram showing a conventional program list corresponding to FIG.

FIG. 19 is a diagram illustrating an example of a sequential function chart of translational branching / merging.

FIG. 20 is a diagram showing a conventional program list corresponding to FIG. 19;

FIG. 21 is a diagram showing an example of a single flow sequential function chart.

FIG. 22 is a diagram showing a conventional program list corresponding to FIG. 21.

[Explanation of symbols]

40A, 40B Program creation device, 60A, 60B
Programmable controller, 41 First microprocessor, 61 Second microprocessor, 42
System memory, 43 sequence program memory,
44 process shape memory, 45 process program memory,
46 operation keys.

Claims (6)

[Claims] 1. An initial step designating means for designating an initial step by a step number when designating a structure of a step-advanced program applied to a programmable controller, and subordinate to the initial step in a program processing order. Dependent process instructing means for instructing each connected process by a process number, process number instructing means for instructing the number of dependent processes, and a process shape memory for storing the content instructed by each of the instructing means as a process shape Read out from the process shape memory as a process operation start command or a process drive command which activates the next process while acting in accordance with the process transition to make the current process inactive according to the formation shape of the process step type program. A program creating apparatus comprising: an adding unit for adding each process number. 2. The apparatus according to claim 1, further comprising: first instruction means for instructing a branch condition of a plurality of subordinate steps which are connected by branching from the initial step and for instructing a merging condition.
A program creation device according to claim 1. 3. The program creating apparatus according to claim 1, further comprising second instruction means for instructing a plurality of subordinate processes which are connected and branched from the initial process and executed in parallel. 4. A pseudo instruction insertion means for inserting a pseudo instruction at a position for inputting a transition condition instruction for executing a process driving instruction and at a position for inputting an output driving program in a process. 4. The program creation device according to any one of claims 1 to 3. 5. When the number of each subordinate process connected to the initial process is indicated by a numerical value, the next process number to be connected based on the first process number of the subordinate process is obtained by sequentially adding 1 to the number. 2. The apparatus according to claim 1, further comprising: a first batch generation unit configured to automatically generate an entire process configuration by using numbers, and collectively generate a process operation start command and a process drive command corresponding to each process. The program creation device according to the above. 6. When an arbitrary process number is added to each of the dependent processes connected to the initial process, the entire process is constituted by each of the added process numbers irrespective of the process number specified at the beginning. 2. The program creating apparatus according to claim 1, further comprising a second batch generation unit that batch-generates a process operation start command and a process drive command corresponding to the process.