JPH0371209A - Abnormality detector for numerical control program - Google Patents

Abstract

PURPOSE:To easily detect an abnormal position by sending a display command for a block or a word in an NC program in which abnormality is detected and the contents of the abnormality to a display means and moving a program input cursor to the abnormal position. CONSTITUTION:When the syntax abnormality of an NC program is detected by a syntax checking processing means 4, an abnormality display command means 6 sends the display command of the abnormal position and the abnormal contents of the NC program in which the abnormality is detected and a block or a word generating an error or a warning in the NC program displayed as the result of editor processing is displayed so as to be emphasized from others. The abnormal contents detected as the result of the syntax checking processing are also displayed. At that time, a cursor movement command means 7 sends a moving command for moving the program input cursor on a display means 5 to the abnormal position to move the program input cursor to the abnormal position. Consequently, an error or a warning in the NC program can be simply and quickly checked.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to an abnormality detection device for detecting errors in a numerical control program used in a numerical control device and grammatical errors to the extent that they do not cause errors that cause malfunctions. This is related to confirming the location of the abnormality and the details of the abnormality.

[Prior art] A numerical control program created in a numerical control device (
Before executing an NC program (hereinafter referred to as an NC program), it is necessary to detect and correct errors in the NC program and grammatical errors (hereinafter referred to as warnings) that do not cause errors that cause malfunctions.

FIG. 5 is a block diagram showing a conventional abnormality detection device for an NC program in a numerical control device.

In the figure, (1) is a keyboard for inputting various information and data for creating an NC program, (2) is an editor processing means for creating and modifying an NC program based on the input data, and (3> is an editor processing means (2)). (4) is a syntax checking processing means for detecting errors and warnings in the created NC program; (5) is a display means, such as a CRT, for displaying various data. It is.

Next, the NC in the numerical control device configured as above
The operation of the program abnormality detection device will be explained with reference to the flowchart shown in FIG.

First, the operator operates the keyboard (1) to start the editor processing means (2) (steer knob 561), and inputs the necessary data from the keyboard (1) to the editor processing means (2).
2), the editor processing means (2) creates and modifies the NC program, and edits the NC program (step 562). The created NC program is NG.
Simultaneously with being sent to the C program storage memory 3> and stored, or following the storage of the NC program, the syntax check processing means (4) is called (step 5B3),
A syntax check processing means (4) checks whether there are errors or warnings in the words or blocks of the created NC program.
) (step 564).

If there is an error or warning in the NC program as a result of the judgment by the syntax check processing means (4), the warning is displayed on the display means (5) (step S85). When the warning is displayed on the display means (5), the operator starts the editor processing means (2) again, searches for the error or warning, and corrects the NC program (step Sol).
, 582).

This operation is repeated until there are no errors or warnings in the created NC program, and an NC program free of errors or warnings is completed. The completed NC program is then used to drive the machine to perform machining movements (step 866).

[Problems to be Solved by the Invention] In the conventional NC program abnormality detection device, the editor processing means (2) only performs editing such as writing, adding, deleting, and modifying the NC program, and confirms the NC program by checking the syntax. This is done by the operator looking for the error or warning location by looking at the warning displayed on the display means (5) in response to the error or warning detected by the processing means (4).

In this way, when checking an NC program, it is difficult to identify errors or warnings in the NC program with only warnings from the syntax check processing means (4), and it is difficult for the operator to search for errors or warnings. There was a problem in that the numerical control device had to be occupied for a long time to confirm the NC program.

In order to solve these problems, the NC we are creating
The program is temporarily stored in buffer memory, errors, etc. are detected, and if an error, etc. has occurred, the location where the error, etc. has occurred is displayed at an early stage by warning the display means that there is an error, etc. in that part. An abnormality detection device for an NC program is disclosed in, for example, Japanese Utility Model Application Publications No. 148807/1980 and No. 114302/1983.

However, even in these cases, N
Only the blocks of the C program are displayed, and the operator needs to search for the specific abnormality and check the details of the abnormality by looking at the manual etc. There was a problem in that it took time.

The present invention has been made to solve these problems, and aims to provide an abnormality detection device for an NC program in a numerical control device that can easily and quickly confirm errors and warnings in the NC program. This is the purpose.

[Means for Solving the Problems] An abnormality detection device for an NC program in a numerical control device according to the present invention detects an abnormality when a syntax abnormality in an NC program created by an editor processing means is discovered by a syntax check processing means. An abnormality was discovered by the display command means N.
A command to display a block or word of the C program and the content of the abnormality is sent to the display means, and a movement command for moving the program input cursor to the abnormal position is sent to the display means by the cursor movement command means.

[Operation] In the present invention, when a syntax abnormality in the NC program is discovered by the syntax check processing means, the abnormality display command means sends out a command to display the abnormality position and abnormality content of the NC program in which the abnormality was discovered. , a block or word in which an error or warning has occurred in the NC program displayed as a result of editor processing is displayed in a display manner that is emphasized compared to others, and abnormal content found as a result of syntax check processing is also displayed.

Further, at this time, the cursor movement command means sends a movement command to move the programmed manual cursor of the display means to the abnormal position, thereby moving the programmed manual cursor to the abnormal position.

[Embodiment] FIG. 1 is a block diagram showing the configuration of an embodiment of the present invention. In the figure, (1) to (5) are exactly the same as the conventional example shown in FIG. (6) is an abnormality display command means that sends out a command to display the syntax abnormality position and abnormality contents of the NC program discovered by the syntax check processing means <4>;
7) is a cursor movement command means that sends a movement command for the program input cursor displayed on the display means (5>) when a syntax abnormality in the NC program is discovered by the syntax check processing means (4).

(8) is a storage means of the numerical control device having an NC program storage memory (3) and the like. (9) is a G code register that stores the preparation function word (hereinafter referred to as G code) that was in one block of the NC program during the syntax check processing by the syntax check processing means (4), and (to) is a syntax check register. This is an address register that temporarily stores words other than the G code within one block of the NC program during check processing.

(11) is a necessary word definition table in which necessary words are defined for each G code, and (12) is a table that is held until another command for the characters shown in the code and function item of JIS B6314 3.1 is received. (13) is a G code group definition table that defines the symbols (hereinafter referred to as G code groups) for each G code. Simultaneous command not possible G code definition table, (14) is a character definition table that defines usable address characters, and (15) is a word data command value limit definition table that defines the limits of word data command values. It is.

(1B) is an NC program successive pointer that temporarily stores the reading point of the NC program whose syntax is checked by the syntax check processing means (4).

FIG. 2 shows an example of the display screen (51) of the display means (5) that displays the NC program created by the editor processing means (2), and in the figure, (52) is the syntax check processing means (4). A syntax check key is used to start the call. (53) indicates a program input cursor.

Next, the operation of the NC program abnormality detection device configured as described above will be explained with reference to the flowcharts shown in FIGS. 3 and 4.

As shown in the flowchart of FIG. 3, the operator operates the keyboard (1) to start the editor processing means (2) (step 531), and starts the editor processing means (2) while inputting necessary data from the keyboard (1). N in (2)
Create and modify the C program (step 532)
.

Next, the operator manually enters a syntax check input "*" into the syntax check key field (52) displayed on the display screen (51) of the display means (5) (step A33). The first readout point for one word of the NC program created by the processing means (2) is set and stored in the NC program successive pointer (16),
The syntax check processing means (4) is called, and the syntax check processing means (4) performs syntax check processing on the NC program created (step 534), and determines whether or not there are errors or warnings in the NC program (step 534). 5
35) As a result of this judgment, if there is a syntax abnormality in the NC program, the process proceeds to the NC program correction process (step 836).
).

The operation of this syntax checking process will be explained below using the flowchart shown in FIG.

Upon starting the syntax check process, first, the G code register (9) and address register (10) are initialized (step S41). Next, the NC program continuous pointer (
16), one word of the NC program is read into the syntax check processing means (4) (step 542). The syntax check processing means (4>) checks the syntax of the read word data and searches for detectable errors and warnings (step 543).

Errors in this word data are checked using, for example, the following check items.

■ Check whether an address character that does not exist in the used address character definition table (14) is used, and if it is used, a "no specification error" occurs.
shall be.

■ If there is an invalid character that cannot be determined as a mathematical expression in the mathematical expression following the address character, a "word description format violation error" will occur.

■ If the result of calculating the formula following the address character is that there is division by zero in the formula, it is treated as a "word formula data division by zero error."

- If the result of calculating the formula following the address character exceeds the command value limit value for that word defined in the word data command value limit definition table (15), an "address numerical value error" is determined.

In addition, check items for warnings include, for example, the following: By looking at the address register (10>), it is determined whether words using the same address character are repeated within the same block, and if words using the same address character are repeated, one of the words is ignored. To prevent this,
This is a warning for repeating words using the same address character.

As a result of searching for these errors and warnings, if an error or warning is found, remove step 544)
, syntax check processing means (4>) to abnormality display command means (
6> and the cursor movement command means (7>), and the abnormality display command means (6) sends the error detection signal to the editor processing means (7).
A command to display the abnormal position and contents of the abnormality is sent to 2>, and a program manual cursor movement command is sent from cursor movement command means <7>. Based on this abnormality display directive,
For example, as shown in the display screen (51) in Figure 2, the syntax-checked word (54) is switched to a light/dark inverted display to display an error or warning part (step 545), and at the same time, the light/dark inverted display is displayed. switched word
An error or warning warning message (55) is displayed below (54) (step 846). Furthermore, the NC program successive pointer (1B
), that is, the beginning position of the word (54) (step 547), and the syntax check process is ended with an error display.

In this state, the operator looks at the display screen of the display means (5), modifies the NC program as shown in FIG. 3 (step 53B), and executes the syntax check process again (step 534).

Also, as a result of checking the syntax of the word data above,
If no error or warning is found (step 544), it is determined whether the syntax-checked word is a G function word (step 848), and if the word is a G function word, the word is stored in the G code register (step 848). 9) (step 549), and if the word is not a G function word, write the word to the address register (step 549).
10) (step 550). Then, set the beginning of the next word in the NC program read pointer (1B) (Step 551) until the syntax check of the NC program for one block is completed (Step 552).
, ° repeat the syntax checking process for the words of that block (steps 842-552).

After completing the syntax check process for each word of one block in this way (step 552), the syntax check process for the block data is performed by searching for detectable errors in the one block data (step 853).
.

When checking the syntax of one block of data, first the words of one block are taken out from the G code register (9>) and the address register (10).Then, errors are searched for using, for example, the following check items.

■ For each G code stored in the G code register (9), refer to the necessary word definition table (11) to determine whether there is a shortage of words required for the G code command, and as a result, there is a shortage of necessary words. If the error occurs, a "required word missing error" will occur.

■ G code register (9) and address register (lO
), calculate the total number of words stored in
As a result, if the number of words exceeds the number of words that can be commanded within one block, it is determined as a "number of words that can be commanded within one block error".

■ For each G code stored in the G code register (9), refer to the G code definition table (13) that does not allow simultaneous commands and determine whether there is a G code that does not allow simultaneous commands in other G code registers (9). However, if a G-code that cannot be commanded simultaneously exists, a "G-code existence error that cannot be commanded simultaneously" will occur.
shall be.

In addition, check items that can be used as a warning for one block of data include, for example, the following.

(2) Refer to the necessary word definition table (11) for each G code stored in the G code register (9), and check the words necessary for the G code command from the address register (10). As a result, if there is a word that is not used in any G-code and the word is not, for example, a sequence number, feed function, auxiliary function, spindle function, or tool function, that word is ignored and is marked as "unnecessary". Word Presence Warning”.

■ For each G code stored in the G code register (9), refer to the G code group definition table (12>)
If a G code with the same code group exists in another G code register (9), one of the G codes will be ignored, so such errors and warnings will be treated as "preparation function ignore warnings". As a result of the search, if an error or warning is found in the block data (step 554), command signals are sent from the abnormality display command means (6) and the cursor movement command means (7>) as in the case of words. Then, the syntax-checked block is switched to a light/dark inverted display to display the error or warning part (step 35B), and a warning message for the error or warning is displayed (step 557).
Move the program input cursor (53) to the position indicated by the NC program read pointer (16) (step 8).
58), the syntax check process ends with an error.

If this syntax check process ends with an error, the operator determines the location and content of the error from the display screen, corrects the NC program, and repeats the syntax check process from step S34 in FIG. 3. .

Repeat this process for all NC programs (
Step 559) When the syntax check process and all corrections of the NC program in which the abnormality has been found are completed, machining operation is performed using the NC program (Step 537).

In the above embodiments, errors and warnings are displayed using inverted brightness, but they may also be indicated using inverted red characters, underlined characters, a background color change display, or a display color different from normal. .

[Effects of the Invention] As explained above, according to the present invention, when a syntax abnormality in an NC program is discovered by the syntax check processing means, the abnormality display command means displays the abnormal position and content of the abnormality in the NC program where the abnormality was detected. By sending a display command, blocks or words in which errors or warnings have occurred in the NC program displayed as a result of editor processing are displayed in a display format that is emphasized compared to others, and abnormalities found as a result of syntax check processing are displayed. Since the contents are also displayed, when checking the created NC program, it is possible to obtain information on the abnormality location and abnormality content, making it easy to detect abnormality locations and without referring to manuals etc. NC programs can be easily modified.

In addition, at this time, the cursor movement command means sends a movement command to move the program input cursor of the display means to the abnormal position, so that the program manual cursor can be moved to the abnormal position, so the NC program can be corrected immediately. This reduces the time required to modify NC programs, which greatly reduces the time occupied when creating NC programs for numerical control devices that particularly require improved operating rates, making it possible to make effective use of numerical control devices. .

[Brief explanation of drawings]

FIG. 1 is a block diagram showing the configuration of an embodiment of the present invention, FIG. 2 is a surface view showing the display screen of the display means of the above embodiment,
3 and 4 are flowcharts showing the operating procedure of the above embodiment, and FIG. 5 is a block diagram showing the configuration of the conventional example,
FIG. 6 is a flowchart showing the operation of the conventional example. (1)...Keyboard, (2)...Editor processing means, (3>...NC program storage memory, (4)...
... Syntax check processing means, <5) ... Display means, (
6)...Abnormality display command means, (7)...Cursor movement command means, (8)...Storage means. Note that the same reference numerals in the figures indicate the same or equivalent parts. Figure 5

Claims (1)

[Scope of Claims] An editor processing means for creating and modifying a numerical control program while displaying it on a display means, and a syntax check processing means for checking syntax abnormalities in the numerical control program created by the editor processing means. In the numerical control device, when a syntax abnormality is detected by the syntax check processing means, an abnormality display command means sends a display command of the block or word in which the abnormality is found in the numerical control program and the contents of the abnormality to the display means. , cursor movement command means for sending a movement command to the display means to move the program input cursor to the display position of the abnormal part of the block or word commanded by the abnormality display command means. Detection device.