JPH08255010A - Comment display device for programming device - Google Patents

Abstract

PURPOSE: To provide a comment display device for a programming device which can display signal comments and circuit comments in a circuit diagram together so that characters do not overlap with a graphic. CONSTITUTION: By referring to a line section 203 in a line management table 202, it is decided which of the circuit diagram and a signal comment is a line to be displayed on a display screen 201. For the circuit diagram, the circuit diagram is read out of corresponding lines of a virtual screen 205 by referring to a number 204 on the virtual screen and displayed on the display screen 201. For the signal comment, on the other hand, the signal comment is read out of a corresponding line of a signal comment file 206 by referring to the number 204 on the virtual screen and displayed on the display screen 201.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a function block diagram comment display device in a programmable controller program creation device.

[0002]

2. Description of the Related Art Of the programming languages used in programmable controllers, one that expresses the processing of data
One example is a function block diagram (hereinafter abbreviated as FB diagram).

FIG. 12 is a diagram showing an example of the FB diagram, which includes a function block (hereinafter, abbreviated as FB) representing data processing, an input signal name and an output signal name of the FB,
And FB are connected. FIG. 12 shows a process of adding the analog inputs AI0000 and AI0001 and outputting the result to the analog output AO0000.
Here, AI0000, AI0001, and AO000
0 indicates an address in the programmable controller. For example, AI0000 indicates the address “0000”.
Shows the input of data from.

Further, in the programming language used in the programmable controller, not only the ladder diagram but also the F
Even in the B diagram, a series of programs connected by lines is called a circuit or a circuit diagram.

In order to make a program created by a programming device easier to read, the signal name in the program should include the address of the programmable controller (AI00 above).
Instead of using (00, etc.), an easy-to-understand label is assigned to the address and a program is created using the label. In addition, a comment that explains the meaning of the signal is added to each label, and the programmer can refer to the comment of the label at any time to know what the signal means. Is.

The comment of the above label is stored in a programming device, a main storage device or an auxiliary storage device in the programmable controller, separately from the created program, and is read and updated by the programming device.

As described above, since the comment for the program and the signal (label) in the program are handled separately, the comment is not displayed on the circuit diagram during the editing of the program, and the comment is displayed as shown in FIG. The area for displaying is set at a predetermined position on the screen, or another window is displayed as shown in FIG. 14 and a comment is displayed in the window.

FIG. 13 shows the label "INPUT" in the FB diagram.
This shows the case where the comment display of "1" is selected, and the label "INPUT1", the address "AI0000", the comment "Analog input 1 (instrument number 1)", and the circuit comment "instrument calculation processing" are at the bottom of the display screen. Is displayed in.

Similarly to FIG. 13, FIG. 14 shows the case where the comment display of the label “INPUT1” in the FB diagram is selected, and a pop-up window is displayed in which the comment corresponding to the selected signal is displayed. Label "INPUT
1 ”, address“ AI0000 ”, comment“ analog input 1 (instrument number 1) ”, and circuit comment“ instrument arithmetic processing ”are displayed in the pop-up window.

When the programming device displays the program on the display device, the programmable controller or the circuit information stored in the programming device is displayed while being converted from the machine code of the programmable controller into display data which is image data. Is not efficient in terms of processing speed. Therefore, a display buffer is provided in the programming device to increase the display speed. This display buffer is called a virtual screen and is held in various formats (for example, a text screen) depending on the display device used.

Since the elements constituting the FB diagram are a box representing the outline of the FB, input signal names and output signal names of the FB, and connections for connecting the FBs, the display is in JIS half-width characters,
And some graphic codes (box that represents the outline of FB,
It is sufficient to combine a line, a code representing a figure representing a connecting portion between a line and a box, etc. The graphic code may be replaced with JIS half-width characters such as "+" and "-". Therefore, the virtual screen data is JIS
It can be represented by a two-dimensional array of only half-width codes.
For the code used for the display, horizontal 5 × vertical 7 pixels,
By using a small font such as horizontal 6 × vertical 8 pixels, it is possible to increase the display density of FB elements displayed in one screen.

On the other hand, the comment is for explaining the meaning of the signal in an easy-to-understand manner, and JIS full-width characters including kanji are used for displaying in Japanese.
Since full-width characters are more complicated than half-width characters, the font size should be at least 12 horizontal x 12 vertical pixels, generally 1 horizontal.
In the case of a high resolution display device of 6 × 16 pixels, the width is 2
A font of 4 × 24 pixels or more is also used.

[0013]

As described above,
Since the sizes of the fonts used for the circuit and the comment are generally different, when the programmer refers to the comment on the label in the program, only the comment for one selected signal can be displayed. Therefore, there is a problem that the flow of the entire program is difficult to read.

Further, even when a plurality of circuits are displayed in one screen, only the comment of one selected circuit can be displayed for the same reason as described above. Also, if the circuit diagram and the comment are displayed together on the same line, it is necessary to display the fonts of different sizes together as described above, and the comment is displayed on the next line and overlaps with the circuit diagram. There is a problem that it is displayed.

Further, if the signal comment and the circuit comment are always displayed, most of the display screen becomes a comment and the display density of the circuit diagram is lowered. The objects of the present invention are as follows. It is possible to simultaneously display the comment of a signal in the displayed circuit for a plurality of signals. It is possible to simultaneously display the comment of a circuit in the displayed circuits for a plurality of circuits. It is possible to display the displayed circuit diagram, signal comment, and circuit comment in a mixed manner without overlapping characters and figures. It is possible to switch the display / non-display of the signal comment and the circuit comment according to the designation from the user.

[0016]

Means for solving the above problems will be described below. In claim 1, the line management means holds information for identifying the circuit diagram and the comment on a line-by-line basis.

The display means displays the circuit diagram and the comment corresponding to each line of the display screen on the display screen based on the information held by the line management means. Further, in claim 2, further comprising a virtual screen means for storing a circuit diagram and a comment storage means for storing a comment, wherein the line management means is a line number of the circuit diagram stored in the virtual screen means. And the line number of the comment stored in the comment storage means are held in the line unit.

According to a third aspect of the present invention, the circuit diagram stored in the virtual screen means is read line by line, and when there is no signal name in the circuit diagram of the line unit, information indicating the circuit diagram and the virtual screen are displayed. The line number of the circuit diagram for each line on the means is stored in the line management means, and when a signal name is present in the circuit diagram for each line, the information indicating the circuit diagram and the line on the virtual screen means are stored. A line management information generating unit is further provided which stores a number and further stores information indicating a comment and a line number of the comment corresponding to the signal name in the comment storing unit in the line managing unit.

According to another aspect of the present invention, the line management information generating means switches whether or not the presence of the signal name is determined according to an instruction. According to a fifth aspect of the present invention, the circuit comment storage means for storing the circuit comment, the information indicating the circuit comment and the circuit comment storage means for the circuit comment at a designated position in the information stored in the line management means. And circuit comment information insertion means for inserting the line number and the line number.

In claim 6, the line management means is
The display start position on the display screen is held in pixel units in the held information. In the seventh aspect, the circuit diagram and the comment have different font sizes.

[0021]

1 is a diagram for explaining the principle of the present invention. The operation of the present invention will be described below with reference to FIG.

The program created by the programming device is stored in the virtual screen means 101 as a circuit diagram. The circuit diagram is stored in the virtual screen means 101 as JIS half-width code or graphic code. The row management information generation means 103 reads out the circuit diagram from the virtual screen means 101 row by row and determines whether or not there is a signal name in the circuit diagram. If there is no signal name, the line management information generating means 10
3 stores the information indicating the circuit diagram and the line number of the read circuit diagram in the virtual screen unit 101 in the line management unit 104. If there is a signal name, the row management information generation means 103 corresponds to the information indicating the circuit diagram, the line number in the virtual screen means 101 of the read circuit diagram, the information indicating the signal comment, and the signal name. The line number of the comment in the comment storage unit 102 is stored in the line management unit 104.

The display means 107 refers to the information stored in the row management means 104 and determines whether the object to be displayed for each line of the display screen is a circuit diagram or a comment. In the case of a circuit diagram, the corresponding circuit diagram is read from the virtual screen means 101 and the circuit diagram is displayed on the corresponding line. If it is a comment, the corresponding comment is read from the comment storage unit 102 and the comment is displayed in the corresponding line. Therefore, the display means 107
Will display the circuit diagram and comments together on the display screen.

If the user gives an instruction to display the circuit comment in the circuit diagram, the circuit comment information insertion means 105 causes the line management means 104 to display the information indicating the circuit comment and the circuit comment. The line number in the circuit comment storage means 106 is inserted into the line management means 104. Therefore, when the display means 107 redisplays, the circuit comment is displayed in the line designated by the user on the display screen.

Furthermore, by adding a display start position in pixel units on the display screen as information to be stored in the row management means 104, the display means 107 can display fonts of different sizes in each row.

As described above, the comment of the signal in the displayed circuit can be simultaneously displayed for a plurality of signals, and the circuit comment can be simultaneously displayed for a plurality of circuits.

The displayed circuit diagram, signal comments,
Also, it is possible to display the circuit comment in a mixed manner without overlapping the character and the graphic. Further, it is possible to switch the display / non-display of the signal comment and the circuit comment according to the designation from the user.

[0028]

FIG. 2 shows the overall construction of the first embodiment. In the first embodiment, the program created by the programming device is already displayed on the virtual screen 205 as a circuit diagram.
The font sizes of the circuit diagram, the signal comment, and the circuit comment have the same size, and can be represented as half-width characters, for example.

(A) shows the display screen 201 of the first embodiment, and shows that the circuit diagram and the signal comment are mixedly displayed on the same line. (B) shows the row management table 202, which is composed of a row section 203 and a number 204 in the virtual screen. The line segment 203 is
Each line is a symbol indicating whether it is a circuit diagram or a signal comment. “A” indicates a circuit diagram and “B” indicates a signal comment. Also, the number 2 in the virtual screen
04 is a virtual screen 205 in which each line in the display screen is described later,
Alternatively, it indicates the line number in the signal comment file 206.

(C) shows the correspondence between the actual display screen 201 and the row management table 202. Each circuit diagram and signal comment are displayed with reference to the row management table 202. For example, the line numbers “0” and “1” of the display screen 201 are the circuit diagram “A”, and the numbers 204 in the virtual screen are “0” and “1”.
The portions corresponding to the line numbers “0” and “1” of 05 are displayed on the line numbers “0” and “1” of the display screen 201. Similarly, the line number “2” on the display screen 201 is “B” indicating a signal comment, and the number 204 in the virtual screen is “0”, which corresponds to the line number “0” in the signal comment file 206. "Analog New 1 Analog Syuryoku" is displayed on the line number "2" of the display screen 201, and the vertical line of the circuit diagram is interpolated. Hereinafter, the same process is repeated to display the entire display screen 201.

(D) shows a virtual screen 205 of the circuit diagram, which is shown as an image in the figure, but actually stores the JIS half-width code or graphic code in a two-dimensional array. .

(E) shows a signal comment file 206 in which signal comments to be displayed on the display screen 201 are stored. FIG. 3 shows the line management table 202 and the signal comment file 206 of the first embodiment.
3 is a flowchart showing a method of creating the.

First, N indicating the total number of lines of the virtual screen 205,
Initialize i1 which is the line number counter of the line management table 202, i2 which is the line number counter of the virtual screen 205, and i3 which is the line number counter of the signal comment file 206. That is, the total number of rows of the virtual screen 205 is substituted for N, and “0” is substituted for i1, i2, and i3 (S1
01).

Next, in the row section 203 of the i1th row of the row management table 202, the row stores the symbol "A" indicating the circuit diagram. For example, in FIG. 2, since the line number "0" on the display screen is a circuit diagram, "A" is stored. In addition, in the number 204 in the virtual screen of the i1th row of the row management table 202,
I2 indicating which line of the virtual screen 205 the i1 line of the display screen 201 corresponds to is stored in the number 204 in the virtual screen. For example, in FIG. 2, since the line number “0” on the display screen corresponds to the line number “0” on the virtual screen 205, “0” is stored (S102).

Then, i1 which is a counter of the number of rows in the row management table 202 is incremented (+1) (S10).
3). Next, it is determined whether or not the signal name exists on the line number i2 of the virtual screen 205. If the signal name exists (S10
4, Yes), and proceeds to the next step S105. If the signal name does not exist (S104, No), step S
Proceed to 107. For example, in FIG. 2, the signal name does not exist in the line number “0” of the virtual screen 205, but the signal names “INPUT1” and “OUTPUT” exist in the line number “1”.
Exists.

In S104, a signal name exists (S10
4, Yes), the symbol “B” representing a signal comment is stored in the i1 th row section of the row management table 202. Further, i3 indicating which line of the signal comment file corresponds to the number 204 in the i1th virtual screen of the line management table 202 is stored (S105).

Subsequently, the signal comment corresponding to the i1th signal name on the virtual screen 205 is fetched from the auxiliary storage device or the like and stored in the i3th line of the signal comment file 206. When there are a plurality of signal names in the same line, the signal comment file 206 stores the signal comment in correspondence with the lateral position. The signal comment is, for example, J
Store in IS half-width code. Then, i1 and i3 are each incremented (+1). If the unit of the signal comment is n lines, the number of updates of i1 and i3 is +
n (S106).

Then, i2 indicating the line number of the virtual screen 205 is incremented (+1) (S107). Finally, it is determined whether or not i2 indicating which line of the virtual screen 205 is greater than the last line of the virtual screen 205.
That is, it is determined whether or not i2 is larger than N, and if i2 is larger (S108, Yes), the process ends, and if not larger (S108, Yes).
108, No) The process returns to S102 and the process for the next virtual screen 205 is performed.

FIG. 4 is a flow chart showing the processing for displaying on the display screen 201 while referring to the row management table 202. First, the drawing start line number in the drawing range to be drawn on the display screen 201 is assigned to i, and the drawing end line number is assigned to N (S201).

Next, the position Y for drawing is calculated. First
In the embodiment, since the font sizes of the circuit diagram and the signal comment are the same, the line number i on the display screen 201 is simply multiplied by the font height to calculate (S20).
2).

Then, the contents of the i-th row of the number 204 in the virtual screen stored in the row management table 202 are extracted and substituted into M (S203). Next, the row section 203 of the row number i in the row management table 202 is taken out, and if the row section 203 is “A” (S204, Yes) indicating the circuit diagram, the process proceeds to S205, and the row section 203 is the circuit diagram. If it is not “A” indicating, the process proceeds to S206.

When it is determined in S204 that the line segment is the circuit diagram "A", the contents of the virtual screen 205 corresponding to M are drawn at the drawing position Y corresponding to the line number i of the display screen 201 ( S205).

If the line segment 203 is not the circuit diagram "A" in S204, it is determined to be a signal comment. The contents of the signal comment file 206 corresponding to M are drawn at the drawing position Y corresponding to the line number i on the display screen 201. Also, the circuit diagram is interpolated. That is, it is determined whether there is a continuous vertical line between the line indicating the virtual screen immediately before and the line indicating the virtual screen immediately after, and if there is, a vertical line is drawn at line number i and the virtual screen immediately before is displayed. The interpolating process of the circuit diagram is performed so that the vertical line in the line and the vertical line in the virtual screen immediately after the line continue (S2).
06).

Then, the drawing line number i is incremented (+1) (S207). Finally, it is determined whether or not the drawing line number i is larger than the drawing last line number N, and if i is larger than N (S208, Yes), the process is terminated, and i is N.
If not larger (S208, No), the process returns to S202, and the drawing process corresponding to the next row of the row management table 202 is performed.

Next, a second embodiment of the present invention will be described. In the second embodiment, a circuit comment can be displayed on the display screen 201 in addition to the circuit diagram and the signal comment. FIG. 5 shows an example of a user interface for registering a designated line in the display screen 201 as a circuit comment. This is performed by displaying the window having the contents shown in FIG. 5 to the user and inputting the start line and the number of lines in the line range in the display screen 201 to be the circuit comment.

For example, by executing "execute" after selecting "insert" in FIG. 5, the specified number of lines from the specified start line are registered as the circuit comment area. To delete a circuit comment that has already been registered, specify the start line and the number of lines, select "Delete", and then click "Execute" to delete the specified line from the specified start line. A few minutes of circuit comments are deleted.

As another method, it is also possible to specify the range in the circuit diagram actually displayed with a pointing device such as a mouse and to insert or delete it by action selection processing such as a menu. Further, a user interface or the like for designating a range and inputting the circuit comment itself to be displayed is also possible.

The process of newly registering the designated range as a circuit comment is to change the contents of the row management table 202 and insert the circuit comment. Therefore, the circuit comment line can be inserted by inserting the newly inserted line records into the line management table 202. The symbol “C” indicating the circuit comment is stored in the line segment 203 of the record to be inserted, and the number 2 in the virtual screen is stored.
04 stores the record number of the corresponding circuit comment file.

The above processing will be described below with reference to FIG. As shown in FIG. 6A, when a circuit comment is inserted in the first line of the display screen 201, the contents of the line management table 202 shown in FIG. 2B are shifted down line by line and become empty. "C" is stored in the line section 203 of the line number "0", and the circuit comment file 2 is stored in the line 204 in the virtual screen.
The row number “0” of 07 is stored and the row management table 202 shown in FIG. 6B is created. Next, as shown in FIG. 6 (f), the circuit comment “Keiki Enzori” is stored in the first line of the circuit comment file 207. This circuit comment is created by the user in the circuit comment file 2
Registered in 07.

Further, in the process of deleting the designated circuit comment from the screen, the record of the line to be deleted is deleted from the line management table 202, and the corresponding circuit comment file 20 is deleted.
The record No. 7 is deleted, and the line number 203 in the line management table 202 is the number 20 in the virtual screen of the line that is the circuit comment.
It can be realized by reattaching 4.

FIG. 7 shows a circuit diagram including circuit comments.
7 is a flowchart showing a process of displaying on a display screen 201. First, the number of the drawing start line in the drawing range to be drawn on the display screen 201 is assigned to i, and the number of the drawing end line is assigned to N (S301).

Next, the position Y for drawing is calculated. Second
In the embodiment, since the font sizes of the circuit diagram, the signal comment, and the circuit comment are the same size, the line number i on the display screen 201 is simply multiplied by the font height (S302).

Then, the contents of the i-th row of the number 204 in the virtual screen stored in the row management table 202 are extracted and substituted into M (S303). Next, the line segment 203 of the line number i of the line management table 202 is taken out, and if the line segment 203 is “A” (S304, A) indicating the circuit diagram, the process proceeds to S305, and the line segment 203 is a signal comment. If it is "B" (S304, B), the process proceeds to S306, and the line section 203 is "C" (S3, which indicates a circuit comment).
04, C), the process proceeds to S307.

If it is determined in S304 that the line segment is the circuit diagram "A", the contents of the virtual screen 205 corresponding to M are drawn at the drawing position Y corresponding to the line number i of the display screen 201 ( S305).

If it is determined in S304 that the line segment is the signal comment "B", the content of the signal comment file 206 corresponding to M is set to the drawing position Y corresponding to the line number i on the display screen 201. draw. Further, the circuit diagram is interpolated. That is, it is determined whether there is a continuous vertical line between the line indicating the virtual screen immediately before and the line indicating the virtual screen immediately after, and if there is, a vertical line is drawn at line number i and the virtual screen immediately before is displayed. Interpolation processing of the circuit diagram is performed so that the vertical line inside the line and the vertical line inside the virtual screen immediately after the line continue (S306).

If it is determined in S304 that the line segment is the circuit comment "C", the contents of the circuit comment file 207 corresponding to M are set to the drawing position Y corresponding to the line number i on the display screen 201. draw. Further, the circuit diagram is interpolated (S307).

Then, the drawing line number i is incremented (+1) (S308). Finally, it is determined whether or not the drawing line number i is larger than the drawing last line number N, and if i is larger than N (S309, Yes), the process ends, and if i is not larger than N (S309, No), the process proceeds to S302. Returning to this, the drawing process corresponding to the next row of the row management table 202 is performed.

FIG. 8 shows the overall construction of the third embodiment. In the third embodiment, the program created by the programming device is already a virtual screen 306 as a circuit diagram.
The font size of the circuit diagram, the signal comment, and the circuit comment are different from each other. For example, the circuit diagram is represented by one-byte characters, and the signal comment and the circuit comment are represented by two-byte characters. And

(A) shows a display screen 301 of the third embodiment, showing that the circuit diagram and the signal comment are mixedly displayed on the same line. The circuit comment is not mixed with the circuit diagram in (a), but may be mixed and displayed.

(B) shows a row management table 302, which is composed of a row section 303, a virtual screen number 304, and a display start position 305. The line segment 303 is
Each line is a symbol indicating whether it is a circuit diagram, a signal comment, or a circuit comment. “A” indicates a circuit diagram, “B” indicates a signal comment, and “C” indicates a circuit comment. The number 304 in the virtual screen indicates which line in the virtual screen 306, the signal comment file 307, or the circuit comment file 308 each line in the display screen corresponds to. Furthermore, the display start position 305 is a circuit diagram corresponding to the line number, a signal comment,
Alternatively, it indicates the first vertical coordinate in the display screen 301 on which the circuit comment is displayed.

(C) shows the correspondence between the actual display screen 301 and the row management table 302, and displays each circuit diagram, signal comment, and circuit comment with reference to the row management table 302. . For example, since the line number “0” on the display screen 301 is the circuit comment “C” and the number 204 in the virtual screen is “0”, the “instrument calculation” corresponding to the line number “0” in the circuit comment file 307. "Process" is displayed on line number "0" of the display screen 301. Since the display start position 305 of the line number “0” is “0”, it is displayed from the coordinate “0” on the display screen 301. Similarly, since the line numbers “1” and “2” of the display screen 301 are “A” indicating the circuit diagram and the numbers 304 in the virtual screen are “0” and “1”, the lines of the virtual screen 306 are displayed. The portions corresponding to the numbers “0” and “1” are displayed on the line numbers “1” and “2” of the display screen 301. At this time, since the display start position 305 is “16” and “24”, the coordinate “1” is displayed.
The display of the line number "1" is started from 6 ", and the display of the line number" 2 "is started from the coordinate" 24 ".
The line number “3” of 01 is “B” indicating a signal comment, and the number 304 in the virtual screen is “0”. Therefore, “Analog input 1 analog” corresponding to the line number “0” of the signal comment file 307. The "output" is displayed on the line number "3" of the display screen 301, and the vertical line of the circuit diagram is interpolated.
Hereinafter, the same processing is repeated to display the entire display screen 301.

(D) shows a virtual screen 306 of the circuit diagram, which is shown as an image in the figure, but actually stores the JIS half-width code or graphic code in a two-dimensional array. .

(E) shows a signal comment file 307 in which signal comments to be displayed on the display screen 301 are stored. (F) shows the circuit comment file 308, and the circuit comments to be displayed on the display screen 301 are stored in the file.

FIG. 9 shows the row management table 30 of the third embodiment.
2 is a flowchart showing a method of creating the signal comment file 307 and the signal comment file 307. First, N indicating the total number of rows of the virtual screen 306, i1 which is a row number counter of the row management table 302, and i2 which is a row number counter of the virtual screen 306,
I, which is a counter of the number of lines of the signal comment file 207
3 and H indicating the start position of the row are initialized.
That is, the total number of rows of the virtual screen 205, i1, i2,
"0" is substituted for i3 and H (S401).

Next, in the row section 303 of the i1th row of the row management table 302, the row stores the symbol "A" indicating the circuit diagram. For example, in FIG. 8, since the line number "1" on the display screen is a circuit diagram, "A" is stored. In addition, the number 304 in the virtual screen of the i1 line of the line management table 302
I2 indicating which line of the virtual screen 306 the i1 line of the display screen 301 corresponds to is stored in the number 304 in the virtual screen. For example, in FIG. 8, since the line number “1” of the display screen corresponds to the line number “0” of the virtual screen 306, “0” is stored. Also, H is stored in the display start position 305 of the i1th row of the row management table 302, and H is updated by adding the height of the font of the circuit diagram to H (S40).
2).

Then, i1 which is the row counter of the row management table 302 is incremented (+1) (S40).
3). Next, it is determined whether or not the signal name exists on the line number i2 of the virtual screen 306. If the signal name exists (S40
4, Yes), and proceeds to the next step S405. If the signal name does not exist (No in S404), step S
Proceed to 407. For example, in FIG. 8, the signal name does not exist in the line number “1” of the virtual screen 306, but the signal names “INPUT1” and “OUTPUT” are present in the line number “2”.
Exists.

In S404, a signal name exists (S40
4, Yes), the symbol “B” representing the signal comment is stored in the i1 th row section of the row management table 302. Further, the signal comment file 307 is assigned to the number 304 in the i1th virtual screen of the row management table 302.
Then, i3 indicating which row of is stored. Furthermore,
Display start position 305 of row i1 of row management table 302
Is stored in H, and H is updated by adding the height of the font of the signal comment to H (S405).

Subsequently, the signal comment corresponding to the i1th signal name on the virtual screen 306 is fetched from the auxiliary storage device or the like and stored in the i3th line of the signal comment file. When there are a plurality of signal names in the same line, the signal comment file 308 stores the signal comment corresponding to the horizontal position. Then, i1 and i3 are each incremented (+1). If the unit of the signal comment is n lines, the number of updates of i1 and i3 is also + n, and H
Is added to (the height of the font of the signal comment) × n to update H (S406).

Then, i2 indicating the line number of the virtual screen 306 is incremented (+1) (S407). Finally, it is determined whether i2, which indicates what line the virtual screen 306 is, is larger than the last line of the virtual screen 306.
That is, it is determined whether or not i2 is larger than N. If i2 is larger than N (S408, Yes), the process ends, and if not larger (S408), the process ends.
408, No) Returning to S402, the process for the next virtual screen is performed.

When inserting or deleting a circuit comment in the line management table 302, the line section 303, the number 304 in the virtual screen, and the display start position 305 of the line management table 302 are updated. That is, as shown in FIG. 8B, when a circuit comment is inserted in the line number "0", the line numbers "0" and after in the line management table 302 are shifted by one. When inserting a plurality of lines of circuit comments, the line management table 302 is shifted by the number of lines. Display start position 30
In (5), (insertion number) × (circuit comment font height) is added and stored. Each display start position 305 of the circuit comment to be inserted is (display start position one line before) +
Stores (circuit comment font height). In the case of deletion, all (the number of deletions) × (the height of the font of the circuit comment) is subtracted and stored in the display start position 305 after the deletion position. FIG. 10 is a flowchart showing a process of drawing on the display screen 301 when the font sizes of the circuit diagram, the signal comment, and the circuit comment are different from each other.

First, the drawing start line number in the drawing range to be drawn on the display screen 301 is i, and the drawing end line number is N.
(S501). Next, the coordinate Y for drawing is calculated. In the third embodiment, since the font sizes of the circuit diagram, the signal comment, and the circuit comment are different from each other, the value corresponding to the line number i of the display start position 305 of the line management table 302 is read out and substituted for Y ( S502).

Then, the contents of the i-th row of the number 304 in the virtual screen stored in the row management table 302 is taken out and substituted for M (S503). Next, the line segment 303 of the line number i of the line management table 302 is extracted and the line segment 3
If 03 is “A” (S504, A) indicating the circuit diagram,
If the line segment 303 is "B" (S504, B) indicating the signal comment, the process proceeds to S505, and the line segment 303 is "C" (S504, indicating the circuit comment) (S504, S).
If it is C), the process proceeds to S507.

If it is determined in S504 that the line segment is the circuit diagram "A", the contents of the virtual screen 306 corresponding to M are drawn at the drawing position Y corresponding to the line number i of the display screen 301 ( S505).

If it is determined in S504 that the line segment is the signal comment "B", the content of the signal comment file 307 corresponding to M is set to the drawing position Y corresponding to the line number i on the display screen 301. draw. Further, the circuit diagram is interpolated. That is, it is determined whether there is a continuous vertical line between the line indicating the virtual screen immediately before and the line indicating the virtual screen immediately after, and if there is, a vertical line is drawn at line number i and the virtual screen immediately before is displayed. Interpolation processing of the circuit diagram is performed so that the vertical line in the line and the vertical line in the virtual screen immediately after that continue (S506).

If it is determined in S504 that the line segment is the circuit comment "C", the content of the signal comment file 307 corresponding to M is set to the drawing position Y corresponding to the line number i on the display screen 301. draw. Further, the circuit diagram is interpolated (S507).

Then, the drawing line number i is incremented (+1) (S508). Finally, it is determined whether or not the drawing line number i is larger than the drawing last line number N, and if i is larger than N (S509, Yes), the process ends, and if i is not larger than N (S509, No), the process proceeds to S502. Returning to this, the drawing process corresponding to the next row of the row management table 302 is performed.

FIG. 11 is a flow chart of the fourth embodiment. In the fourth embodiment, it is possible to switch the display of the signal comment corresponding to the signal name of the circuit diagram when the row management table is created. The overall configuration diagram is similar to that of FIG. 8, and therefore the description will be given with reference to the same figure.

First, N indicating the total number of lines of the virtual screen 306,
Initialize i1 which is the line number counter of the line management table 302, i2 which is the line number counter of the virtual screen 306, i3 which is the line number counter of the signal comment file 307, and H which indicates the start position of the line. That is,
Substitute the total number of rows of the virtual screen 306 for N, i1, i2, i3, and "0" for H (S601).

Next, in the row section 303 of the i1th row of the row management table 302, the symbol "A" indicating that the row is a circuit diagram is stored. The value of i2 is substituted for the number 304 in the virtual screen of the i1 line of the row management table 302. Also, the display start position 3 of the i1 row of the row management table 302
H is stored in 05 and H is updated by adding the height of the font of the circuit diagram to H (S602).

Then, i1 which is a counter of the number of rows in the row management table 302 is incremented (+1) (S60).
3). Next, it is determined whether to display the signal comment of the circuit diagram. The presence / absence of the signal comment display is specified in advance by the user, and a user interface for switching the presence / absence of the signal comment display includes a user's selection in the action selection process of the menu. If the signal comment display mode is selected (S604, Yes), the process proceeds to the next S606, and the signal comment display mode is not selected (S6).
04, No), the process proceeds to S608.

Next, it is determined whether or not the signal name exists on the line number i2 of the virtual screen 306. If the signal name exists (S
(605, Yes), and proceeds to the next step S606. If the signal name does not exist (S605, No), the process proceeds to step S608.

In S605, the signal name exists (S60
5, Yes), the symbol “B” representing a signal comment is stored in the i1 th row section of the row management table 302. Further, the signal comment file 307 is assigned to the number 304 in the i1th virtual screen of the row management table 302.
Then, i3 indicating which row of is stored. Furthermore,
Display start position 305 of row i1 of row management table 302
Is stored in H, and H is updated by adding the height of the font of the signal comment to H (S606).

Subsequently, the signal comment corresponding to the i1th signal name on the virtual screen 306 is retrieved from the auxiliary storage device or the like and stored in the i3th line of the signal comment file 307. When there are a plurality of signal names in the same line, the signal comment file 307 stores the signal comment corresponding to the lateral position thereof. Then, i1 and i3 are each incremented (+1). If the unit of the signal comment is n lines, the number of updates of i1 and i3 is + n.
Then, H is updated by adding (signal comment font height) × n to H (S607).

Then, i2 indicating the line number of the virtual screen 306 is incremented (+1) (S608). Finally, it is determined whether i2, which indicates what line the virtual screen 306 is, is larger than the last line of the virtual screen 306.
That is, it is determined whether or not i2 is larger than N. If i2 is larger than N (S609, Yes), the process ends, and if not larger (S609).
609, No) The process returns to S602 and the process for the next virtual screen is performed.

Row management table 3 generated by the above processing
With reference to the contents of No. 02, the processing to be displayed on the display screen 301 is the same as the flowchart shown in FIG.

[0086]

According to the present invention, it is possible to display a plurality of comments of signals in the displayed circuit diagram at the same time as the circuit diagram.

In addition, the comment of the displayed plural circuits is
Multiple displays are possible at the same time as the circuit diagram. Further, the displayed circuit diagram, signal comment, and circuit comment can be mixed and displayed in different size fonts without overlapping characters and figures.

Further, it is possible to switch the display of the signal comment and the circuit comment according to an instruction from the user.

[Brief description of drawings]

FIG. 1 is a diagram illustrating the principle of the present invention.

FIG. 2A is a diagram showing a display screen of the first embodiment. (B) is a diagram showing a row management table of the first embodiment. (C) is a diagram showing a correspondence relationship between the row management table and the display screen of the first embodiment. (D) is a figure which shows the virtual screen of 1st Example. (E) is a diagram showing a signal comment file of the first embodiment.

FIG. 3 is a flowchart showing a process of creating a row management table according to the first embodiment.

FIG. 4 is a flowchart showing a process of displaying on a display screen of the first embodiment.

FIG. 5 is a diagram showing an example of a user interface for designating a circuit comment line.

FIG. 6A is a diagram showing a display screen of the second embodiment. (B) is a diagram showing a row management table of the second embodiment. (C) is a diagram showing a correspondence relationship between the row management table and the display screen of the second embodiment. (D) is a figure which shows the virtual screen of 2nd Example. (E) is a diagram showing a signal comment file of the second embodiment. (F) is a diagram showing a circuit comment file of the second embodiment.

FIG. 7 is a flowchart showing a process of displaying a circuit diagram including a circuit comment of the second embodiment on a display screen.

FIG. 8A is a diagram showing a display screen of the third embodiment. (B) is a diagram showing a row management table of the third embodiment. (C) is a diagram showing a correspondence relationship between the row management table and the display screen of the third embodiment. (D) is a figure which shows the virtual screen of 3rd Example. (E) is a figure which shows the signal comment file of 3rd Example. (F) is a figure which shows the circuit comment file of 3rd Example.

FIG. 9 is a flowchart showing a process of creating a row management table according to the third embodiment.

FIG. 10 is a flow chart showing a drawing process when the comment font size is different from the circuit diagram of the third embodiment.

FIG. 11 is a flowchart showing a process of creating a row management table according to the fourth embodiment.

FIG. 12 is a diagram showing an example of a function block diagram.

FIG. 13 is a diagram showing a case where a comment display area is set.

FIG. 14 is a diagram showing a case where another window is displayed to display a comment.

[Explanation of symbols]

 101 Virtual Screen Means 102 Comment Storage Means 103 Line Management Information Generation Means 104 Line Management Means 105 Circuit Comment Information Insertion Means 106 Circuit Comment Storage Means 107 Display Means

Claims (7)

[Claims] 1. A line management unit that holds information for identifying a circuit diagram and a comment on a line-by-line basis, and a circuit diagram and a comment corresponding to each line of a display screen based on the information held by the line management unit. And a display means for displaying on the display screen, and a comment display device in a programming device. 2. A virtual screen unit for storing a circuit diagram, and a comment storage unit for storing a comment, wherein the line management unit has a line number of the circuit diagram stored in the virtual screen unit, and The comment display device according to claim 1, wherein the comment line number stored in the comment storage unit and the line number of the comment are held in units of the lines. 3. The circuit diagram stored in the virtual screen means is read line by line, and when the signal name does not exist in the line unit circuit diagram, information indicating the circuit diagram and the information on the virtual screen device are displayed. The row number of the circuit diagram for each row is stored in the row management means, and when the signal name exists in the circuit diagram for each row, the information indicating the circuit diagram and the line number on the virtual screen means are stored. 3. Further comprising line management information generation means for storing in the line management means information indicating a comment and a line number of the comment corresponding to the signal name in the comment storage means. Comment display device described. 4. The comment display device according to claim 3, wherein the line management information generation means switches whether or not the presence of the signal name is determined according to an instruction. 5. A circuit comment storage means for storing a circuit comment, information indicating a circuit comment at a designated position in the information stored in the line management means, and the circuit comment storage means for the circuit comment on the circuit comment storage means. The comment display device according to any one of claims 2 to 4, further comprising circuit comment information insertion means for inserting a line number. 6. The comment display according to claim 1, wherein the line management unit holds a display start position on a display screen in pixel units in the held information. apparatus. 7. The comment display device according to claim 1, wherein the circuit diagram and the comment are fonts having different sizes.