KR100650840B1 - Testing device and programming tool - Google Patents

Abstract

SUMMARY OF THE INVENTION The present invention provides a program execution method and a programming environment of an inspection apparatus capable of easily expressing, easily executing, and editing the flow of inspection process and inspection contents for individual inspection objects. In the means for achieving the test, the inspection program is described by a flow chart describing the flow of the inspection process processing and a tabular program describing the inspection contents, and the execution of the inspection program proceeds according to the flowchart. When the program reaches the described step, the tabular program described inside the step is executed.

Inspection device, programming tool

Description

Inspection device and programming tool {TESTING DEVICE AND PROGRAMMING TOOL}

1 is a block diagram showing a hardware configuration of an inspection apparatus according to a first embodiment of the present invention.

2 is a block diagram for explaining the function of the inspection apparatus according to the first embodiment of the present invention.

Fig. 3 is a diagram showing an example of a tabular program used in the inspection apparatus according to the first embodiment of the present invention.

4 is a schematic diagram showing an application example of the inspection apparatus according to the first embodiment of the present invention.

5 is a diagram showing an example of a programming tool of an inspection program according to the first embodiment of the present invention.

Fig. 6 is a diagram showing another example of a programming tool of an inspection program according to the first embodiment of the present invention.

Fig. 7 is a view for explaining execution of an inspection program according to the first embodiment of the present invention.

Fig. 8 is a flowchart for explaining the operation of the flowchart execution means (Fig. 2) according to the first embodiment of the present invention.

Fig. 9 is a flowchart for explaining the operation of the tabular program execution means (Fig. 2) according to the first embodiment of the present invention.

Fig. 10 is a flowchart showing an inspection program having a branch according to the second embodiment of the present invention.

Fig. 11 is a flowchart showing an inspection program having branching and joining according to a third embodiment of the present invention.

12 shows a tabular program according to a fourth embodiment of the present invention;

FIG. 13 shows a tabular program according to a fifth embodiment of the present invention; FIG.

14 is a diagram showing an inspection program when a function block is used instead of the flowchart according to the sixth embodiment of the present invention.

Fig. 15 is a diagram showing a tabular program describing the output of a function block according to the sixth embodiment of the present invention.

Fig. 16 is a diagram showing an example of a history display screen according to the seventh embodiment of the present invention.

Fig. 17 is a diagram showing an example of a detailed history display screen according to the seventh embodiment of the present invention.

18 is a diagram showing a procedure of creating a tabular program according to an eighth embodiment of the present invention.

Fig. 19 is a diagram showing another procedure for creating a tabular program according to the eighth embodiment of the present invention.

Fig. 20 is a diagram showing a list of tags which are candidates for input when creating a tabular program according to the eighth embodiment of the present invention.

FIG. 21 is a diagram showing a procedure of executing a tabular program created by an eighth embodiment of the present invention in an inspection apparatus; FIG.

Fig. 22 is a diagram showing another procedure of executing the tabular program created by the eighth embodiment of the present invention in the inspection apparatus;

<Description of Drawing>

200: program writing means

201: program preservation means

202: flow chart execution means

203: Table program execution means

204: function block execution means

205: ladder execution means

206: data preservation means

207: input means

208: output means

209: operation means

210: display means

211: inspection history preservation means

300: tabular program

314: measurement condition setting unit

315: measurement target setting unit

316: judgment criteria setting unit

317: Judgment post-processing setting unit

400: inspection device

401: inspection target

500: Programming Tool

501: Flow Chart Editor

502: tabular program editor

1400: tabular function block

1800: tag editing means

1801: Tag Table

2100: code generation means

2101: executable program

Technical Field

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a programmable inspection device in an inspection process of a production line, and more particularly, to an improvement of the program creation and execution method thereof.

Prior art

An inspection program executed by an inspection apparatus is a program language dedicated to inspection, in which the criteria for acceptance of the product in the inspection are described by a general-purpose programming language of a computer, or the values used as the criteria for acceptance of inspection are summarized in a tabular form. It is described by.

In addition, as a method of describing the flow of processing in a tabular form, a program execution method is described in which the entire flow of processing is described in the sequence control description section, and the conditions and operations in each state are described in the condition control description section. (For example, patent document 1)

[Patent Document 1] Japanese Patent Application Laid-Open No. 06-79245 (Means for Solving Problems)

In the case of describing the acceptance criteria for inspection in a general-purpose programming language of a computer, since the values serving as the acceptance criteria are recorded in the program language in the program language, when changing the acceptance criteria, the flow of the program is understood and the above-mentioned It is necessary to check after which part of the program the value of the criterion is described, and then change it.

In addition, in the case of describing the acceptance criteria in a tabular form, the inspection criteria used for the determination of the acceptance of individual products are expressed in the form of a table, and it is easy to change the standard value, but the inspection object is transported using a transport system, It is difficult to express the inspection process of fixing the jig and starting the inspection.

On the other hand, in order to describe the flow of a process in the form of a table, a program execution method is described which is divided into a sequence control description section and a condition control description section. In this method, the flow of the entire process can be described, but since the flow of the process is not represented graphically, it is necessary to follow the tables in order to grasp the flow of the process.

In addition, in the case of inspecting a variety of varieties, since the content of the inspection differs depending on the variety, branching occurs in the flow of the inspection process. The method of expressing the processing flow in the form of a table has a problem in that it is difficult to grasp the overall image of the processing flow including the branch.

SUMMARY OF THE INVENTION An object of the present invention is to provide a program execution method and a programming environment of an inspection apparatus capable of easily expressing, easily executing, and editing the flow of the inspection apparatus overall processing, and the contents of inspection for individual inspection objects. .

In order to achieve the above object, the present invention describes an inspection program by a flow chart describing the flow of the inspection process processing and a tabular program describing the inspection contents, the execution of the inspection program proceeds according to the flow chart, When the tabular program reaches the described step, the tabular program described inside the step is executed.

That is, the present invention is a programmable inspection device used in an inspection process of a production line, the inspection comprising a flow chart describing the flow of the inspection process processing and a tabular program describing the inspection contents in the flow chart. Program storage means for storing a program; flow chart execution means for reading a flow chart of the inspection program and executing the flow chart; and a table for reading a tabular program of the inspection program and executing the tabular program. A formal program execution means and an input / output means for inputting and outputting a signal from an inspection object, wherein the flowchart execution means executes the inspection program in accordance with the flow chart, and whether the tabular program is described in the executing step. Judge, and the tabular program is described. In this case, the tabular program execution means is activated.

First embodiment

Best Mode for Carrying Out the Invention The best embodiment for carrying out the present invention will now be described with reference to the drawings. 1 is a block diagram showing a hardware configuration of an inspection apparatus according to an embodiment of the present invention.

The inspection apparatus 400 of this embodiment is a hardware resource, which includes a central processing unit (CPU) 100, a read-only memory (ROM) 101, a read / write memory (RAM) 102, and a display device. 103, an input device 104, an input / output interface (I / O) 105, a digital-to-analog converter (D / A) 106, and an analog-to-digital converter (A / D) 107 are provided. It is configured by. In addition, these components are connected via the bus 108.

In the read-only memory (ROM) 101, for example, a program for controlling the operation of the operating system or the inspection apparatus 400 is stored. The read / write memory (RAM) 102 stores an inspection program created by a user and data input / output at the time of inspection.

The display apparatus 103 is comprised by LCD, for example, and can display the progress of an inspection program. In addition, the display device 103 can display the reference value and the measured value of the acceptance determination of the inspection and can display the acceptance determination result. The input device 104 is composed of, for example, a keyboard or a touch panel attached to an LCD as the display device 103, and can instruct the execution of the inspection program to start. In addition, the input device 104 can change the reference value of the acceptance decision of the inspection.

2 is a block diagram for explaining the function of the inspection apparatus according to an embodiment of the present invention. The central processing unit (CPU) 100 executes various functions by a program that controls the operation of the inspection apparatus 400 stored in the ROM 101. First, the CPU 100 functions as the display means 210 together with the display device 103. In addition, the CPU 100 functions as the operation means 209 together with the input device 104. The CPU 100, together with the ROM 101 and the RAM 102, serves as a flowchart execution means 202, a tabular program execution means 203, a function block execution means 204, and a ladder execution means 205. Function. In addition, the CPU 100 functions as the program storage means 201, the data storage means 206, and the inspection history storage means together with the RAM 102. The CPU 100 also functions as an input means 207 with the I / O 105 and the A / D 107. The CPU 100 also functions as an output means 208 with the I / O 105 and the D / A 106.

Next, various functions executed by the CPU 100 will be described in detail with reference to FIG. 2. In the block of FIG. 2, the CPU 100 includes a flowchart execution means 202, a tabular program execution means 203, a function block execution means 204, a ladder execution means 205, and a display means 210. It is a means to act as a subject.

The flowchart execution means 202 reads a part of a flowchart of an inspection program from the program storage means 201, and performs processing. In the flow chart execution means 202, the data input from the input means 207 to the data storage means 206 is processed based on the flow chart read from the program storage means 201, and the data storage means 206 is processed. Record it. The data recorded in the data storage means 206 is output by the output means 208. The flow chart execution means 202 activates the tabular program execution means 203 when the tabular program 300 to be described later is described in the flowchart, and when the function block is described in the flowchart. The function block execution means 204 is activated, and when the ladder is described in the flowchart, the ladder execution means 205 is activated. In addition, in the flowchart execution means 202, an instruction from the user is received as an operation signal from the operation means 209. In addition, the flowchart execution means 202 displays on the display means 210 the situation in which the flow chart execution means 202 is processing, and also records the inspection result in the inspection history storage means 211.

The tabular program execution means 203 reads a portion of the tabular program 300 (described later) of the inspection program from the program storage means 201 and performs processing. In the tabular program execution means 203, the data inputted to the data storage means 206 by the input means 207 is judged based on the agreement determination criteria described in the tabular program 300. In addition, the tabular program execution means 203 records the data in the data storage means 206 in accordance with the contents described in the tabular program 300 or switches the processing to be executed in accordance with the agreement determination result. In addition, the instruction from the user is received as an operation signal from the operation means 209. In addition, the display means 210 displays the situation in which the tabular program execution means 203 is processing. In addition, the inspection result is recorded in the inspection history storing means 211.

The function block execution means 204 reads a part of the function block of the inspection program from the program storage means 201 and performs processing. In the function block execution means 204, the data inputted to the data storage means 206 by the input means 207 is processed in accordance with the contents described in the function block, and recorded in the data storage means 206.

The ladder execution means 205 reads the ladder part of the inspection program from the program storage means 201 and performs the processing. In the ladder execution means 205, data input to the data storage means 206 by the input means 207 is processed in accordance with the contents described in the ladder, and is recorded in the data storage means 206.

The input means 207 and the output means 208 are periodically started, and read and write the contents of the data storage means 206 between the external connection device.

The program creation means 200 creates an inspection program executed by the inspection apparatus 400. The inspection program includes a flowchart describing the flow of the inspection process processing, a tabular program 300 describing the inspection contents, a function block, and a ladder, but the programming thereof is performed by the program creation means 200. Since these program languages cannot be executed by the execution means of each language as it is, the program creation means 200 converts each of these languages into a form that can be executed directly by the execution means of each language, and stores the program ( Preserved in 201).

3 is a diagram showing an example of a tabular program 300 used in the embodiment of the present invention. The tabular program 300 includes a step number 301, a comment 302, a measurement condition setting unit 314, a measurement target setting unit 315, a determination reference setting unit 316, and a determination post-processing setting unit 317. It consists of. When the tabular program 300 is executed, the step number 301 and the comment 302 of the step during execution can be displayed on the display screen of the display device 103.

The measurement condition setting unit 314 describes the conditions for setting the inspection target 401 at the time of measurement. In the example of FIG. 3, the test object 401 has two switches SW-1303 and SW-2304 as switches, and has the channel CH-1305 for inputting a voltage. SW-1303, SW-2304, and CH-1305 are all tags (names given arbitrarily by a user to an input / output device included in the inspection apparatus), and in reality, a device corresponding to the input / output data of the data storage means 206 exists. . In the example of FIG. 3, in step 1, SW-1303 is turned ON, SW-2304 is turned OFF and 0.0V is applied to CH-1305.

The measurement condition setting unit 314 can set any number of devices. In the weight field 306, the waiting time from setting the measurement conditions to acquiring the value of the inspection target 401 is specified. Different time constant differences are determined by the inspection target 401 by specifying the waiting time in the weight column 306. The unit of time to be set in the weight field 306 includes seconds, milliseconds, and the like. After the time specified by the weight column 306 has elapsed, measurement is performed from the inspection target 401 specified by the measurement target setting unit 315.

In the target column 307 of the measurement target setting unit 315, a number of a channel for measuring the value of the inspection target 401 is specified. In the example of step 1 of FIG. 3, A / D1-CH3 is designated as an object. This shows that the value of the channel 3 on the first A / D board of the inspection apparatus 400 to which the inspection object 401 is connected is measured. The measured data is supported by the data type specified in the data type column 308, and subsequent addition determination is also performed by the specified data type.

The value of the object specified by the target column 307 of the measurement target setting unit 315 is compared with the value set by the determination reference setting unit 316, and it is determined whether the summation determination criterion is satisfied. The determination criterion setting unit 316 includes a minimum value column 309, a maximum value column 310, and a coincidence comparison column 311. The minimum value column 309 describes the minimum value of the acceptance criteria and the maximum value field 310 describes the maximum value of the acceptance criteria. If the measured value falls within the range of the minimum value of the minimum value column 309 and the maximum value of the maximum value column 310, the pass (OK) is determined. If the measured value does not fall within the above range, fail NG is determined. If there is no description of a value in the minimum value column 309 and the maximum value field 310, and a numerical value is described only in the coincidence comparison field 311, the measured value coincides with the numerical value described in the coincidence comparison field 311. Determine if there is any. If they match, pass (OK) is determined. If there is a mismatch, fail NG is determined.

The value measured from the device designated by the measurement target setting unit 315 and the value set by the determination reference setting unit 316 are compared with each other, and based on the determination result of the sum determination, it is described in the determination post-process setting unit 317. Run the process. The determination post-processing setting unit 317 is composed of two columns, an OK column 312 and an NG column 313. The OK field 312 describes the processing to be executed when the determination result is Pass (OK). The NG column 313 describes processing to be executed when the determination result is Fail NG. For example, in the 0K field 312 of the determination post-processing setting unit 317 in step 4 of FIG. 3, a process of calling "Funk1" which is another software object existing on the inspection apparatus 400 is specified. When the determination result of Step 4 becomes OK, this "Func1" is called from the tabular program execution means 203 and executed.

After the processing described in the determination post-processing setting unit 317 is finished, the tabular program execution means 203 proceeds to the next step (row) of the same tabular program 300, and the step number 301 and the comment 302 Read it. After displaying these on the display screen, the data described in the measurement condition setting unit 314 is output, and the remaining processing in this row is performed. In this way, when the processing of one row of data is completed, the processing advances to the next row. When the processing of the entire table program is completed, the table program 300 is terminated.

An import machine 402, an inspection station 403, an ejector 404, and an inspection apparatus 400 for controlling them are shown in FIG. 4, and it is considered to perform an inspection. The inspection apparatus 400 controls the fetcher 402 to carry the inspection object 401 into the inspection station 403. The inspection station 403 electrically connects the inspection object 401 and the inspection device 400, such as attaching a jig to the inspection object 401, and performs inspection of the inspection items described in the tabular program 300. Conduct. After the inspection, the inspection object 401 is carried out from the inspection station 403 by the ejector 404. The progress of the inspection can be confirmed on the display screen of the inspection apparatus 400. The determination reference value of the acceptance determination of the tabular program 300 can display the list on the display screen of the inspection apparatus 400, move the cursor to one place for the purpose, and change the determination reference value of the predetermined position from the keyboard. Can be.

Here, the creation of the program to be executed by the inspection apparatus 400 will be described. First, the programming tool 500 will be described with reference to FIG. 5. The programming tool 500 of the inspection apparatus corresponds to the program generating means 200 of FIG. 2, and has an editor for editing each language that the inspection apparatus 400 can execute. As an editor of the programming tool 500 of the inspection apparatus, a flow chart editor 501 for editing a flow chart, a tabular program editor 502 for editing a tabular program 300, a ladder editor for editing a ladder, a function There is a function block editor for editing blocks, and a general-purpose programming language editor for writing C or BASIC languages.

The program executed by the inspection apparatus 400 describes the flow of the entire inspection process in a flow chart, and describes the individual inspection contents in the tabular program 300. In addition, when control of a device or data processing is needed, it describes in a ladder or a function block. It is also possible to write in general programming languages such as C language or BASIC language. The programming tool 500 converts the programs described in these languages into an executable program 2101 of an executable form in which execution means of each language is executable. In addition, a program stored in the inspection apparatus 400 is inversely converted from the execution program 2101 of the execution form that the execution means of each language can execute, and displayed in each editor on the programming tool 500. Can be.

Next, the flow of creating a program will be described. The user first describes the flow of the entire inspection process by the flowchart using the flowchart editor 501 on the programming tool 500 of the inspection apparatus. The case of programming the example of FIG. 4 is shown in FIG. In the example of FIG. 4, the carrying-in process of carrying in the test object 401 to the test station 403, the test process which inspects the test object 401 carried in the test station 403, and the test which completed the test process flow The object 401 can be divided into three types of export processing for carrying out. Therefore, on the flowchart editor 501, the following describes the step of describing the carrying-in process for carrying in the inspection target 401 following the start step. Since the inspection is performed after the carry-in is completed, the steps for describing the inspection processing are described. Next, the carry-out process step 702 for carrying out the test | inspection object 401 which finished inspection is described. Next, the contents of each step will be described. Each step can be described by selecting the most suitable program language according to the contents of the process.

The following two methods can be considered as a method of programming the steps corresponding to each language. In the first method, each step of the flowchart has an attribute that specifies the type of the assembly program, and steps corresponding to individual languages are prepared as menus, such as tabular program step 505, ladder step 503, and function block step. In this method, a user selects an appropriate step according to a language written by the user and creates a flowchart by dragging and dropping a mouse from a menu.

As another method, there is a method of arranging a step in which the attribute of the program type is not set with a mouse or the like, and setting the type of the program described in the step when describing the program among the steps.

In either method, when a program such as the tabular program 300 is described in the steps described in the flowchart, the target step is selected with the mouse cursor 505 or the like, for example, the double click is determined. By the operation of, the editor for editing the program language which the step has as an attribute is opened and displayed as a new window. This aspect is shown in FIG.

In Fig. 5, the flowchart editor 501 which has programmed the flowchart on the programming environment of the inspection apparatus is activated. On the flow chart editor 501, the flow of an inspection process is described by the flow chart. Ladder step 503 describes processing related to control such as a carrier system and an interlock. Next, in Table Step 504, inspection processing for the inspection target 401 carried in is described. Here, when the table step 504 on the flowchart editor 501 is selected by the mouse cursor 505 or the like, and an operation indicating the determination of the double click is performed, the tabular program editor 502 is started on the programming tool 500. do. The user (user) describes the contents of the inspection to be performed on the inspection object 401 using the tabular program editor 502 displayed on the screen as the tabular program 300.

The flow chart editor 501 and the tabular program editor 502 are realized on the programming tool 500 of the inspection apparatus as shown in FIG. 5, and individual independent applications as shown in FIG. 6. The table format program editor 502 can be started by selecting the table step 504 with the mouse cursor 505 or the like and double-clicking on the flowchart editor 501.

Also, the tabular program 300 may be stored inside the tabular program step of the flowchart, and only the link information to the tabular program 300 is stored inside the tabular program step, and the corresponding tabular program ( 300 may be present in other places.

Since the programming tool 500 of the inspection apparatus stores the flow chart and link information with the tabular program 300 assembled in one step of the flow chart, the step for which the contents are to be checked is selected from the flow chart. Will open and display a new window.

When the step in which the tabular program 300 is assembled is selected on the flowchart, the editing screen of the tabular program 300 is displayed on a new window. Since the program showing the inspection process is layered, the flow chart can confirm the flow of the entire process of the inspection process. In addition, about the inspection content in each process and the detail of post-inspection process, the content can be confirmed by the tabular program 300 described in one step of a flowchart.

The programming tool 500 may manage not only the link information of the flowchart and the tabular program 300 but also the ladder and function blocks which can be described during the steps of the flowchart. In the programming tool 500, when a step in which a ladder or function block is assembled is selected, a window for editing a ladder is displayed in the ladder, and a window for editing a function block is displayed if the ladder is a function block.

In this way, when the inspection target 401 is inspected, the flow of the process is graphically represented by a flow chart, and the tabulation program 300 displays the content of the acceptance judgment criteria for the individual inspection objects 401 and the content after the acceptance determination. By expressing clearly, it is possible to express the processing of the inspection process as a program having high readability and excellent maintenance.

In addition, since the flow of an inspection process is represented graphically in a flowchart, it can be used as a document which shows the flow of an inspection process as it is. In addition, since the determination reference value of the acceptance determination is represented by the tabular program 300, the tabular program 300 can be used as a standard table of inspection as it is. In addition, on the programming tool 500 of the inspection apparatus, link information of the flow chart and the tabular program 300 is stored, and if the step in which the tabular program 300 is described on the flowchart is selected, the step is described in the above step. Since the tabular program 300 can be referred to, the combination of the flowchart and the tabular program 300 can be used as it is as a document of the inspection process.

Next, execution of the inspection program according to the embodiment of the present invention will be described. Execution of the program starts from the import process step 700 of FIG. In the carry-in process step 700, a ladder describing the carry-in operation is executed. When the carry-in process of the inspection object 401 to the inspection station 403 is complete | finished, the flag which shows that the carry-in process is complete | finished is set, and it moves to a next step.

In the inspection processing step 701, the tabular program 300 is executed. The tabular program 300 to be executed is designated, the tabular program execution means 203 is started, and the inspection is performed. When the processing of the designated tabular program 300 is completed, a flag indicating that the inspection processing step 701 is finished is set, and the flow advances to the next step.

In the carry-out process step 702, a ladder describing the carry-out operation is executed. When the inspection object 401 finishes carrying out from the inspection station 403, a flag indicating that the carrying out process is finished is set, and the process ends.

Until now, although the flow of the inspection apparatus 400 process was described in order with respect to one inspection object 401, the flowchart execution means 202, the tabular program execution means 203, and the ladder execution means 205 are each By implementing as a task operating in parallel on the operating system, the processing can proceed in parallel. It is possible to carry out the inspection at the same time while carrying out the carrying out process and to carry out the carrying out process of the inspection target 401 which has been inspected at the same time.

The operation will be described in more detail using the flow chart of FIG. When the flow chart execution means 202 starts execution, the inspection program is read from the program storage means 201, and one step is read from the head of the flowchart (step 800). It is determined whether the step is a step indicating a branch (step 801). In the case of a step indicating a branch, the process shifts to the step of the branch destination (step 802) and returns to the beginning of the process. If the step does not indicate a branch, it is determined whether the content of the step is a tabular program 300 (step 803).

If the content of the step is a tabular program 300, the tabular program 300 to be executed is designated, and the tabular program execution means 203 is started (step 804). After the execution of the tabular program 300, the process returns to the beginning of the process. If it is not the tabular program 300, it is determined whether the contents of the step are a ladder (step 805). In the case of a ladder, the ladder execution means 205 is started (step 806). If it is not a ladder, it is determined whether the content of the step is a function block (step 807). In the case of a function block, the function block execution means 204 is activated (step 808). In the case of ending the flowchart, the process ends (step 809).

The operation of the tabular program execution means 203 will be described with reference to FIG. The tabular program execution means 203 starts from reading the tabular program 300 designated by the flow chart execution means 202 from the program storage means 201, and reads one line from the tabular program 300 ( Step 900). The tabular program execution means 203 further divides the read one row into one data unit and processes the data one by one.

First, it is determined whether the data is the measurement condition (step 901), and when the data is the measurement condition, the value is output to the data storage means 206 (step 902). At this time, it is determined whether the data is a weight (waiting). If the data is a weight, the processing is stopped for a specified waiting time, and the CPU resource is turned to another task. After the specified time has elapsed, proceed to the next data.

Next, it is determined whether the data is the measurement target (step 903), and when the data is the measurement target, the value to be read is read from the data storage means 206 (step 904).

Next, it is determined whether the data is a criterion of determination (step 905), and when the data is a criterion of determination, the value read out from the data storage means 206 is compared with the criterion of determination (step 906). In the comparing step, the data indicating the read value and the minimum value from the data storage means 206 are compared. If the read value from the data storing means 206 is larger than the data indicating the minimum value, the data is continuously compared with the data indicating the maximum value. As a result, when the read value from the data storage means 206 falls between the minimum value and the maximum value, the acceptance decision result is a pass (OK). On the other hand, when the reading value from the data storage means 206 is less than the minimum value or larger than the minimum value but exceeds the maximum value, it is determined as fail NG. In addition, when there is no description of data in the minimum value column 309 and the maximum value field 310, and data is described only in a matching comparison, the value read from the data storage means 206 and the value of the matching comparison column 311 If it matches, it is determined as pass (OK) if it matches, and if it does not match, it is determined as fail (NG).

Next, it is determined whether the result of the determination is OK (step 907). If the result of the determination is OK, the process described in the OK column 312 is performed (step 908), and the NG column ( The processing described in step 313 is not performed, and the next line is read one line. In addition, it is determined whether the determination result is the fail NG (step 909), and when the determination result is the fail NG, the process described in the OK column 312 is not performed, and is described in the NG column 313. The present process is performed (step 910). After processing the description content of the NG column 313, the following line is read one line. At the end of the execution of the determination post-process of the last row of the tabular program 300, the execution of the tabular program 300 is terminated (step 912), and the step is exited from the tabular step, and the flow advances to the next step of the flowchart. do.

Second embodiment

10 is an embodiment in which a branch is included in a flow chart describing the flow of inspection. As the test | inspection object 401, two types of product A and the product B exist, and the case where it test | inspects by tabular program A and tabular program B, respectively is shown. The determination of whether the inspection target 401 is the product A is made in the step of judging the branch shown in FIG. 10 (step 1000). When the inspection target 401 is the product A, the process proceeds to the step where the tabular program A is included, the tabular program A is started, and the inspection is performed (step 1001). If the inspection target 401 is not the product A, the process shifts to the step in which the tabular program B is included, the tabular program B is started, and the inspection is performed (step 1002). Thereafter, the carrying out process is performed (step 702).

That is, the high level process of inspection is described by the flowchart, and the inside of the step which performs an inspection in a flowchart is described by the tabular program 300. FIG.

Since only the tabular program 300 is limited in the operation which can be expressed, it is difficult to cope with various kinds of products. In addition, if a branch or a jump is described in the tabular program 300 according to the kind of the examination subject 401, the readability of the inspection program described as the tabular program 300 that is easy to understand the inspection contents is deteriorated. Therefore, as shown in the second embodiment, the switching of inspection contents by the variety of the inspection target 401 is described in a flow chart showing the flow of the inspection process, which is excellent in readability and remains as a document of the inspection process. Describe the inspection programs available. In addition, by describing the tabular program 300 listing the values of the acceptance criteria for each type of inspection subject 401, the tabular program 300 is directly stored as a document of a standard table in which the determination criteria of the acceptance determination is summarized for each inspection subject. It is available.

In addition, on the programming tool 500 of the inspection apparatus, link information of the flow chart and the tabular program 300 is stored, and if the step in which the tabular program 300 is described on the flowchart is selected, the step is described in the above step. Since the tabular program 300 can be referred to, the combination of the flowchart and the tabular program 300 can be used as it is as a document of the inspection process.

Third embodiment

11 is an example in which two kinds of products A and B exist as the inspection target 401, and the tabular program A and the tabular program B are respectively inspected, but the common processing is performed by the tabular program C afterwards. . The determination of whether the inspection target 401 is the product A is made in the step of judging the branch shown in Fig. 11 (step 1000). When the inspection target 401 is the product A, the process proceeds to the step where the tabular program A is included, the tabular program A is started, and the inspection is performed (step 1001). If the inspection target 401 is not the product A, the process shifts to the step in which the tabular program B is included, the tabular program B is started, and the inspection is performed (step 1002). Thereafter, tabular program C, which is a common inspection item, is started to perform inspection (step 1100). Then, the carrying out process is performed (step 702).

In other words, a high level process of inspection is described in a flow chart. In the high level process of inspection, the type of the inspection target 401 is specified, the inspection program according to the object is executed, and the common inspection performed regardless of the variety is performed. In this regard, the programs to be executed are collectively described in the upper process of the inspection.

As shown in the third embodiment, the flow chart describes the switching of inspection contents by the varieties of the inspection and the flow of the inspection process in which the processes common to the plurality of varieties are collectively treated as one process. It is possible to describe an inspection program that is excellent and can be used as it is as a document of an inspection process. Furthermore, the tabular program 300 which lists the value of the acceptance determination criteria for each kind of test object 401 is described, and the tabular program 300 which lists the acceptance determination criteria of common items is described, and the table form is described. The program 300 can be used as it is as a document of the standard table which summarized the determination reference value of the acceptance determination for every inspection object.

In addition, on the programming tool 500 of the inspection apparatus, the leak information of the flow chart and the tabular program 300 is stored, and if the step in which the tabular program 300 is described on the flowchart is selected, the step is described in the above step. Since the tabular program 300 can be referred to, the combination of the flowchart and the tabular program 300 can be used as it is as a document of the inspection process.

Fourth embodiment

12 is a description example of the tabular program 300. The tabular program 300 includes an OK column 312 and an NG column 313, which are described in the OK column 312 and the NG column 313 in accordance with the result of the agreement of the steps of the tabular program 300. The processed process. In the OK field 312 and the NG field 313, a jump instruction 1200 for a designated step or an instruction 1201 for calling a software object is described, and the software is written in another program language including the tabular program 300. You can call the object.

Since only the conditions for measurement are set and no comparison with the reference value is made, the process described in the OK column 312 is executed at the step where there is no agreement result. In addition, in addition to the OK field 312 and the NG field 313, an undecided column is provided, and when there is no agreement result, the process described in this undecided column can also be performed.

Fifth Embodiment

13 shows an example in which a function or a script is described in the decision criterion setting unit 316 of the tabular program 300, and a script is described in the decision post-processing setting unit 317. A function can be used in the determination criterion setting part 316 which consists of the minimum value column 309, the maximum value column 310, and the coincidence comparison column 311. FIG. Functions that can be used include MIN (A, B) 1300, which takes the smaller of the two variables A and B, or variable A as the criterion value when condition C is valid. The function 1301 which makes a determination reference value, etc., and in the description 1302 by a script, the variable A can be added as an integer by offset using an arithmetic operation etc. It can be used when a value corrected by applying an offset to a sensor input such as temperature, humidity, pressure, or the like is used as a determination reference value.

The determination post-processing setting unit 317 can describe the script. For example, when the determination result is NG, it can be used when adjusting the value of the variable in accordance with the determination result, such as a script 1303 for manipulating the value of a specific variable.

Sixth embodiment

14 illustrates an example of describing a table program 300 in a function block. The table function block 1400 may change the output destination according to the processing result of the table program 300.

The output of the tabular function block 1400 for executing the tabular program 300 can be set according to the result of executing the inspection program described by the tabular program 300. That is, the internal processing of the function block can be programmed not only in the structured text or instruction list but also in a tabular format that is optimal for the description of the inspection program.

FIG. 15 shows an example in which pins outputted from the tabular function block 1400 are designated in the determination post-processing column of the tabular program 300. In step 1, if the determination result is 1, 1 is output to the output destination of pin number P11500.

Seventh embodiment

16 is an example of the history display screen 1600 which lists the inspection result 1602 together with the lot number 1601.

The inspection apparatus 400 can display this table by the display means 210 by operation from the operation means 209. As a result of the inspection, the portion 1602 determined to be NG may be displayed in large letters or red, so that the portion 1602 may be displayed more prominently than other portions.

Further, by moving the cursor on this screen and selecting the lot number 1601, as shown in Fig. 17, the determination reference value and measured value (in each step of the tabular program 300 when the inspection is performed) 1702 can be displayed as a detailed history display screen 1700 in the form of a table. In addition, the display of step 1701 in which the result is determined to be NG may be displayed in large letters or in red so as to be displayed prominently in comparison with other portions.

Eighth embodiment

Each item of the tabular program 300 may describe a tag. A tag is arbitrary name given to the device which the test | inspection apparatus 400 has. By programming using a tag, when describing an input / output device in a program, the program can be replaced by a user-friendly name instead of the name of the input / output device included in the inspection apparatus 400, thereby making the program easier to read. Can be. In addition, it is possible to reuse the same program in another inspection apparatus 400 only by changing the device to which the tag is corresponded without changing the program once described, and the reusability of the program is improved.

In addition, in the case of the execution form which acquires a device from a tag each time the execution program 2101 is executed, the operation | movement which changes the device of the target of a tag can be performed on the inspection apparatus 400 instead of code generation means. , One by one to send the program to the inspection device 400 can reduce the effort to repair. The procedure at the time of creating the tabular program 300 is shown in FIG. The programmer first uses the tag editing means 1800 to assign a tag to a device that the inspection apparatus 400 has, and is stored, for example, in the form of a tag table 1801. Next, when a programmer creates the tabular program 300 using the tabular program editor 502, instead of inputting the name of the device which the inspection apparatus 400 has, the tag given previously is input.

19 shows another procedure when the tabular program 300 is created. The programmer first uses the tag editing means 1800 to assign a tag to a device that the inspection apparatus 400 has, and is stored, for example, in the form of a tag table 1801. Next, when the programmer creates the tabular program 300 using the tabular program editor 502, the tabular program editor 502 should refer to the information in the tag table 1801 to become a candidate for program input. A list 2000 of tags to be presented is presented. This aspect is shown in FIG. The programmer creates the tabular program 300 by selecting a desired tag from the list 2000 of the presented tags.

21 shows a procedure until the created tabular program 300 is executed by the inspection apparatus 400. When converting the created tabular program 300 into the execution program 2101 using the code generating means 2100, the tag described in the program is replaced with a device based on the information in the tag table 1801. In other words, the tag on the program is replaced by the device in the execution program 2101. Next, the execution program 2101 is sent to the inspection apparatus 400. Thereafter, the inspection apparatus 400 executes the execution program 2101.

22 shows another procedure until the created tabular program 300 is executed by the inspection apparatus 400. When converting the created tabular program 300 into the execution program 2101 using the code generation means 2100, the tag described in the program remains in the execution program 2101 as a tag. Next, the tag table 1801 is also sent to the inspection apparatus 400 together with the execution program 2101. When the inspection apparatus 400 executes the execution program 2101, whenever there is a tag, the tag device 1801 is referred to, the device corresponding to the tag is obtained, and the device is accessed. do.

According to the present invention, the inspection program is described by a flow chart that can be used as a document of the inspection process as it is, and a judgment standard value of the acceptance judgment in the form of a table, and a tabular program that can be used as it is as a document of the inspection standard table. As a result, the flow of the inspection process can be described graphically, which is excellent in readability, and the flow of the inspection process can be easily understood. In addition, since the inspection process can be described as a program excellent in versatility and extensibility, the maintenance of the program can be improved, and these programs can be utilized as a document of the inspection process.

Claims (3)

Programmable inspection device used in the inspection process of the production line, Program storage means for storing an inspection program consisting of a flow chart describing a flow of inspection process processing in a program language and a tabular program describing inspection contents in the flow chart in a program language; Flow chart execution means for reading a flow chart of the inspection program and executing the flow chart; Tabular program execution means for reading a tabular program among the inspection programs and executing the tabular program; An input / output means for inputting / outputting a signal from an inspection object, The flow chart execution means executes the inspection program in accordance with the flow chart, and determines whether the tabular program is described in the executing step, and if the tabular program is described, the tabular program execution means is executed. The inspection apparatus characterized by starting. The method of claim 1, The tabular program includes at least one step, a measurement condition setting unit describing a condition to be set as an inspection target for each step, a measurement target setting unit specifying a measurement target and a measurement value of the inspection target; A determination criterion setting section for setting a determination criterion value, The inspection apparatus characterized by comparing a measured value of the object specified by the measurement object setting part with the determination reference value set by the determination reference setting part, and performing a summation determination. Flow chart execution means for reading a flow chart of the inspection program and executing the flow chart, tabular program execution means for reading the tabular program in the inspection program and executing the tabular program, and a signal from the inspection object And an input / output means for inputting and outputting the data, wherein the flow chart execution means executes the inspection program according to the flow chart, determines whether the tabular program is described in the executing step, and the tabular program is described. If there is, a programming tool for creating the flowchart and the tabular program of the inspection apparatus that starts the tabular program execution means, wherein each step of the flowchart and the tabular program describe a connection. Tools.

Images