JPH10261000A - Drawing device for cable connection diagram - Google Patents

Abstract

PROBLEM TO BE SOLVED: To gain taking-out access to data on a specific object cable in a short time afterward for alteration, remodeling, etc., by not only merely inputting data needed for plotting, but also processing data used for drawing to accurately draw a figure and storing necessary data when a cable connection diagram including a terminal table in a monitor and control board of a power plant, etc., is plotted. SOLUTION: Data on characters, symbols, etc., from a keyboard 2 and coordinate data from a coordinate input device 3 such as a mouse 3a are inputted to a logical operation device 1 and logically operated inside to output control signals for plotting the cable connection diagram including the terminal table of the monitor and control board on a display unit 5 or paper by a plotter 6; and extension data are added to the input data used for the logical operation to store terminal table data to be needed later together with the cable data, and it is made possible to read out necessary data on the above specific cable in a short time by inputting the cable data thereafter.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a control cable connection diagram drawing apparatus for supporting a control cable connection work in a substation or the like.

[0002]

2. Description of the Related Art In substations and the like, in order to transform the power transmitted from the outside via an overhead power transmission line and branch and transmit the power, various equipment related to voltage transformation and branching is provided in the substation, and these devices are controlled. Tens of thousands of cables are laid to control from the room. The above devices include main circuit devices such as transformers, switchgears, phase adjustment equipment, and transformers.These components constitute a power circuit, and control panels and measurement devices are used to control, measure, and protect these devices. A control panel and a protection panel (generally referred to collectively as a switchboard) are interconnected by a control cable.

[0003] The above-mentioned substation facilities have recently been newly established,
There are few expansions, and many substation facilities constructed during the high-growth period have been replaced by aging and improved to have higher functionality.
Such replacement and improvement work is performed by replacing only the substations that are in operation and improving only the part that is being improved, and requires careful planning in terms of both safety and quality so as not to interfere with the power supply system. Careful construction is required. In particular, control cables are closely related to operating circuits.To perform such work safely and accurately, prepare control cable connection diagrams and switching procedure manuals, and carry out actual work according to these instructions. Will be Therefore, creation of such a connection diagram and a switching procedure manual occupies an extremely large weight in performing the above operation.

The connection diagram of the control cable is as follows.
As shown in FIG. 10, for example, a large number of cables connected to a large number of terminals of a circuit breaker (CBO13), which is one of many main circuit devices, are relayed through a cable processing room to a monitoring / control panel. In installation, the details of connecting a cable to a terminal block or keeper (a group of cable connection ends) in which connection terminals provided in a monitoring and control panel are displayed as a group are symbolized and displayed as drawings. . FIG. 11 shows an example of such a connection diagram. The names of the related members are shown in FIG.
It is shown in FIG.

[0005] The switching procedure manual is a table as shown in FIG. 13.
In the case of removal, conduct a sufficient circuit study beforehand so as not to affect the working circuits other than the working circuit concerned, and at the time of work, change the control cable core wires according to the operation of switching the terminal block name, cable number, application , Voltage and current, insulation resistance, connection terminal tightening and the like are checked and recorded.

[0006] Of the above connection diagram and switching procedure manual, the connection diagram is a source of all the work, and when it is created, it has conventionally been all manually created by a designer. In order to streamline the work, CAD (Computer A
ided Design) Introduces a system, stores necessary data in a computer, performs arithmetic processing inside the computer, outputs it, and automatically creates a drawing based on the output signal, or displays the contents of the drawing on a CRT display. I have to.

[0007] A software program for creating a "connection diagram" by the CAD system is already on the market, and the use of this program at each substation streamlines the work of creating a connection diagram. As an example thereof, there is one capable of drawing as shown in FIG. The (a) diagram shown is a keeper (TB) in the connection diagram described above.
1, TB2, and TB3) show the simplified initial state of plotting, and FIG. 2B shows the final state.

In this system, the basic program of CAD includes basic elements for plotting, such as vertical lines, horizontal lines, circles, triangles, and squares. When a necessary element is input and designated, (a) a keeper frame as shown in FIG. A drawing including a line and a leader line is drawn at a predetermined position. When cable character and symbol data are input together with the above input, an output capable of drawing up to (a) is prepared by internal calculation. The above is called drawing of the terminal block. The characters and symbols of the terminal block names in the figure are automatically determined by using the device codes when the target portion of the main circuit device to be connected is determined.

(B) In order to display the cable arrangement shown in FIG. 2 (b), a circle is drawn at the end of the cable lead wire, the destination of the cable, No., and the cable specifications are written on the left and right sides of the circle. Indication such as use symbol and daimo color.
In this drawing, characters and symbols to be displayed are first input, and a display position is specified by coordinate data input by a mouse. When the terminal block graphic and the cable layout graphic can be displayed, the data used for them is stored in a predetermined file.

[0010]

By the way, in the conventional CAD system described above, terminal block data and cable data are created for each cable and terminal block combination in order to draw a terminal block figure, and based on these data. A desired terminal board figure can be drawn or displayed on the screen. But,
In this system, the terminal block data and cable data have no relation to each other, and the figure displayed by specifying the position so that the cable diagram including the cable specification is related to the relevant terminal block at the time of drawing It is only displayed in association.

The control cable connection diagram occupies a large weight in the construction of substation equipment such as new construction, replacement and improvement as described above, but especially in the case of replacement and improvement work. Instead of replacing control cables, the focus is on replacing some of them with different cables or adding new cables. However, in such a case, in such a case, even if an attempt is made to search for and display which terminal block a specific cable is connected to from among tens of thousands of cable data and to display the data, every time the terminal block data is retrieved, The target cable must be displayed on the screen and visually inspected.

For this reason, searching for a terminal block to which a specific cable is connected requires an extremely large amount of time and labor, and it is difficult to obtain necessary information in a short time.

In addition, the order of the cables is determined so that the switching operation can be smoothly performed for the corresponding cable to be switched or improved, which is searched based on the connection diagram while considering the operation function of the actual sequence circuit. After confirming the unit name, it is transcribed and a cable switching procedure manual is created. this is,
The above-mentioned system is intended only to draw terminal block figures when new substation equipment is installed, and is not created in consideration of subsequent processes such as subsequent switching and improvement work.

For this reason, even if the necessary data is carefully read and transcribed while checking the connection diagram and the sequence circuit to prepare the cable switching procedure manual, there is always a mistake in the transcription.
If a transcription error is detected during the switching operation, the switching operation must be stopped.In addition, if the typographical error is the cause, the target terminal block cannot be found at the site, and it takes time to correct it, resulting in wasted working time. The result is spending.

Furthermore, since the drawing operation is performed only by visually confirming the positional relationship between the terminal block and the cable line on the screen, the drawing is performed even when the intersections between the plurality of core wires of each cable and each of the terminal blocks do not exactly match. This is possible, and there is also a disadvantage that the CAD data cannot be taken out accurately because the drawing is inaccurate and unreliable, or because the shapes of the figures are various.

The present invention has been made in order to solve various problems in a conventional cable connection diagram drawing apparatus, and simply draws data by inputting data necessary for drawing a cable connection diagram. Rather, the input data is processed in a prescribed manner so that the drawing can be made accurately, and the necessary data is saved and stored later. It is an object of the present invention to provide a cable connection diagram drawing device that can improve the drawing quality by enabling the data of a specific cable to be taken out in a short time and access the data, and can improve the efficiency of the work of extracting information on the particular cable. I do.

[0017]

According to the present invention, as a means for solving the above-mentioned problems, basic pixel data such as a straight line, a circle, and a square in a basic data storage unit are selected by a signal from an input unit.
The extended data is added to each of the data of the terminal block graphic having a predetermined shape to be specified and drawn at the desired position and the input data such as characters and symbols to be displayed by the input signal, and the terminal block is formed based on the data. A terminal board output signal to be drawn, and a cable figure indicating a connection state between a cable connected to the terminal block and a device connected to an end thereof is selected from the basic pixel data, specified, and drawn in a desired position. A logical operation unit that adds extended data to input data such as characters and symbols to be displayed and input data such as characters and symbols to draw a cable connection diagram based on the above data. Output with arithmetic control
Based on this output, a cable connection diagram including each of the above figures is drawn, and a cable connection diagram drawing configured to store the cable data including the minimum terminal block data to be stored and stored in the storage unit. It was a device.

In this drawing apparatus, basic pixel data is selected and specified based on an input signal, and a terminal block figure and data such as characters and symbols are displayed at a predetermined position to draw a terminal block. Displaying and drawing a cable connection diagram by displaying a cable figure to be connected and data such as characters and symbols thereon is basically the same as in the related art.

However, at this time, extension data is added in advance to the input data used for drawing each figure, display symbol, etc., and by confirming that these data match between the terminal block and the cable figure, The connection diagram is drawn correctly. Therefore, for example, an inaccurate drawing such as displaying the data display line such as the terminal block name and the serial number of each line of the terminal block and the display of the cable cores slightly up and down is displayed at all. It eliminates the need for accurate and beautiful cable connection diagrams.

Further, when a change or improvement work is required later in the input data, when a specific cable for change or improvement is selected from the enormous amount of data, only a specific cable is changed for a short time. The necessary data and cable data of the terminal block data are collectively stored in the storage unit so that they can be accessed by using the terminal block data. Can be displayed.

The program for extracting the cable information necessary for inputting the cable designation may be integrated with the drawing program of the drawing apparatus, or may be provided along with a program for other subsequent operations. .

[0022]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is an overall schematic block diagram of a cable connection diagram drawing apparatus of this embodiment. This drawing device is a logical operation control unit 1 (a personal computer or a device having the same function as that of a personal computer) that internally performs a logical operation based on various input data and controls it to output a control signal for drawing a cable connection diagram. And a coordinate input device 3 such as a keyboard 2, a mouse 3a, or a digitizer 3b, and an auxiliary storage device 4 as a storage unit.
It has.

The logical operation control unit 1 includes an I / O
When various signals are input through the port, the signals are converted to C
Performs arithmetic processing via a PU (Central Processing Unit), stores data as necessary in a storage unit (hard disk), outputs a control signal based on the result of the arithmetic processing, and displays a display such as a CRT or liquid crystal. 5, or a cable connection diagram can be displayed on the paper via a drawing device 6 such as a laser plotter.

The storage unit is not limited to a hard disk, but is provided with various other components. The storage unit has a program for driving a system inside the computer and a drawing basic element drawing function for functioning as a drawing device or a drawing addition function. The programs and data are mainly stored in a hard disk.

The auxiliary storage device 4 is, for example, a floppy disk, and may be a computer-insertable type or an externally-installed type. The auxiliary storage device 4 is used as a drawing device to store and store data to be stored at the time of completion of drawing and display.

FIG. 2 shows a schematic flow of a drawing operation by the drawing apparatus of the embodiment. As shown in the drawing, after the drawing apparatus is started, terminal block data is input (S ₁ ), the terminal block is plotted and displayed (S ₂ ), and then data relating to a cable connected to the terminal block is input (S ₁ ). ₃₎ operation of the cable is displayed and drafting (S ₄₎ drawing apparatus is ended.

However, the cable data including the terminal block data among the data used for drawing the drawing device is stored and stored in the auxiliary storage device, and the tens of thousands of cables are used later for switching or improvement work. One example of executing the function of selecting only a specific cable from the list and displaying it as cable data including the relation to the terminal block is a program that creates a control cable switching procedure manual. The necessary cable data is displayed by giving an input signal to the.

FIG. 3 et seq. Show a detailed flow of a drawing operation by the drawing apparatus. The actual drawing operation is roughly divided into two, that is, drawing of a terminal block and a cable, and FIG. 3 shows a drawing flow of the terminal block.

[0029] First, when the terminal block command is activated, the initial value setting file in step ST ₁ is called by the command, the initial value is read out for such a standard terminal block frame number that is registered in advance in the file , setting the step ST ₂ the terminal block application name (TNS _1), enter the settings required for the terminal block drawn in step ST _3, plotting step ST ₄ if all settings aligned with the screen display state Specify the start point. In this specification, for example, a writing start point corresponding to the upper left of the terminal block is specified by a coordinate input device (mouse).

When the plotting start point is designated, step ST
_{At 5} , the "terminal block frame" is drawn. When the drawing of the frame is completed, the extension data is added to each of the line segment data (a plurality of vertical and horizontal line segments) used for the frame drawing. The addition of the extension data is also performed later on various other data. The detailed reason is that, as described later, accurate drawing is performed and, among these data, This is because the specific procedure is used later as it is for work procedures and the like that instruct the work at the time of change and improvement work in the substation. A specific example of the addition of the extension data will also be described later.

[0031] Next, the above-mentioned step S in step ST ₆
"Serial number" written to the terminal block within the frame of the data input at T ₃ is drawn terminal number fraction, extension data is added with even this case is drawing its serial number ends. Similarly, in step ST ₇ , an input for “terminal block name” is performed from the keyboard, and in ST ₈ , the terminal block name is drawn according to the input character value based on the input, and then extended data is added. In step ST ₉ is keeper name according to an input "keeper name" is drawn, extension data are added. Thus, the drawing operation of the terminal block by the terminal block command is completed.

A specific example of the above-described extension data addition will be described. The extension data includes, for example, the outer frame, the center line, the auxiliary line, the serial number, which are the respective elements of the terminal block shown in FIG.
This is performed by externally inputting extended data as shown for all terminal block names, keeper names, and the like.
FIG. 7 shows a method of adding the extension data. As shown in the drawing, for example, when one line “LINE” of the outer frame is drawn, if the position, length, direction, and type of one line are set by the above-described initial value and set value, D ₁ , Drawing basic data for machine operations required for drawing, such as a figure name, a figure type,..., A start point, an end point, and an extrusion direction, are automatically created by calculation by an internal program (not shown) based on the data.

[0033] Thus since drawing data shown after the drawing described above on the basis of the drawing data created has been performed is displayed on the display device, which creates the necessary extension data in the D ₂ with respect to the input from the outside Done. Moreover, the extension data is integrated data as a whole are added after the drawing the basic data mentioned above in D _3.
Drawing the basic data with the extension data is returned to the database of the CAD in D _4.

Next, a method of drawing a connection diagram of the control cable connected to the terminal block will be described in detail with reference to FIGS. Carry out the registration of the application name (KBR1) shown in step SC _1. This application name is for processing cable data. In step SC ₂ to open the temporary file. This temporary file is for temporarily recording the cable data in the middle of the data creation in the file (storage unit) in which the cable data to be finally stored and stored is to surely process the data creation (FIG. 8 (a)).

[0035] writes the application name in the temporary file at step SC ₃ (FIG. 8 (a) see -1), reading the initial value setting file in SC _4, SC ₅
Enter the cable settings with. The input settings and the like are all the same as for the terminal block. The drawing of the cable is to draw straight lines, circles, letters, and numeric symbols for the connection cable line drawn from the terminal block shown in FIG. 6B.

When the above input setting is completed, the core wire is drawn as follows. Specifying the connection points of the cable core and the terminal block and in step SC ₆ by the coordinate input device (mouse) (see point a Figure 6 (b)). And in SC ₇ , SC ₆
The data of the terminal block outer frame and the auxiliary line existing at the point designated by (3) are acquired (see the element b in FIG. 6B and the auxiliary line in FIG. 6A). This data is obtained from the data of the terminal block already drawn. Then acquires extended data portion of the data acquired by the SC ₈ SC _7. Additionally "fram in 1000 No. part of the extended data in SC ₉ already acquired
e "and" tnshojo "are present to ensure that the cable g is drawn.

Next, to get the extended data of which of the "frame" from the extended data acquired by the SC ₈ (SC
₁₀ ). SC ₁₁ application name from the extended data of the outer frame obtained by said at terminal block name X-coordinate, sequence number X-coordinate, to obtain a Kokorosen'iro X coordinate. To obtain the respective X coordinates, when the outer frame data is obtained, the point list storage unit is provided only for the outer frame data when the terminal block data is created, and the corresponding data is read only for the cable core g. Is obtained.

[0038] Furthermore, based on the application name acquired in SC _11, reading a group of data relating to the terminal block, search the data, which is an extension # 1000 portion of the data is "kiipa" from among them, to get the character value (FIG. 6 (b)
Element c). As a result, data of the keeper name is obtained. Then, the terminal block name X coordinate acquired in SC ₁₁ and S
Get the character data present at the intersection of the Y coordinates of the point designated by C _6, and acquires the character values (see element e in Figure 6 (b)). As a result, a terminal block name is obtained. Get the character data present at the intersection of the Y-coordinate of a point designated by the sequence number X and SC ₆ obtained in SC ₁₁ in a similar manner to obtain the character value (element shown in FIG. 6 (b) f). This gives a serial number. Thus keeper name, terminal block names, the data of the serial number is obtained in connection with the cable data, core set in first SC ₅ to construct a connection state of the cable on the basis of these data (Fig. 6 The element g) of (b) is drawn (SC ₁₆ ). In this case as well, extended data of the cable g in the format shown in FIG. 6B is added to the drawn line segment data.

The drawing a similar manner contact between the core of the drawn core with SC ₁₆ (element h of Figure 6 (b)). Extended data in the format shown in 3 of FIG. 6B is added to the drawn contact data.

Data of one core obtained by the above processing (keeper name, XY coordinate of starting point, serial number X coordinate and core color X coordinate, terminal block name, terminal block serial number, expansion of cores) (No. 1000 part of the data) is saved in a temporary file (see 2 in FIG. 8A) (SC ₁₈ ) (End of Loop 1).

[0041] The above is the terminal block side of the data necessary for the connection diagram of the cable is obtained by connecting wire of the cable has a "crossover between heart line", the plurality of heart step SC ₁₉ proceeds to FIG. 5 The transition between the cores for connecting the lines (FIG. 6B-element i) is drawn. For the data of the drawn line segment, (FIG. 6B)
Add extension data of the format shown in -2). Those SC
_{At 20} , the position for drawing the cable tag is designated by the coordinate input device (mouse) (refer to the point j in FIG. 6B). Also, enter the cable symbol, specification, application, etc. (SC ₂₁ ). Thus, round labels cable from a point specified by the SC ₂₀ (FIG. 6 (b) - element k) draws a (SC _22). Extended data in the format shown in FIG. 6B is added to the data of each drawn line segment. Furthermore Cable symbol input in SC ₂₁ in round-bill drawn in SC _22, specifications,
Display the application on the screen and draw in the round bill. To the drawn data groups, each additional extended data in a format shown in (FIG. 6 (b) -5) (SC 23).

[0042] to set the core wire color of the loop 2 cable in the order of Kushiamikichiso (SC _24). Setting the core color of the cable core with SC ₂₄ (FIG. 6 (b) - Element g) a designated by the coordinate input device (SC _25). Extension data portion of the data specified by the SC ₂₅ is, data drawn by SC ₁₆ to match (FIG. 6 (b) -1) (SC 26), 1010 number portion of extension data thereby obtained of the intersection [m point shown in FIG. 6 (b)] and Y coordinate of the start point of the specified data part third coordinate and SC ₂₅ of the three X-coordinate [a point shown in FIG. 6 (b)] drawing a color set by SC ₂₄ (SC _27). For the data of the drawn text,
(B) Add extension data in the format shown in (6) (end of loop 2).

Thereafter, in the cable data file created in SC ₂₈ , the application name registered in SC ₁ , the number of core wires, the cable symbol input in SC ₂₁ ,
Save specifications and applications (see FIG. 8 (b) -1).
C _29). To get all of the data group of cable on the basis of the application name registered in the SC _1, 1000 No. part of the extended data from its search for a character data is _{"sl- *" (SC 30)} . Then, the data of one core wire saved in the temporary file is read in SC ₁₈ (SC
₃₁ ) (see FIG. 8 (a) -2). Further, data having the same No. is searched from the core No. (“sl- *”) of the data read in SC ₃₁ and the core data acquired in SC ₃₀ , and the character value of the data is determined. get. Keeper name read in SC ₃₁ to the cable data file created by SC _28, stores the terminal block name, acquired character values in ascending order and SC ₃₂ a (Kokorosen'iro) (FIG. 8 (b) -2 reference ).

As described above, the control signal is output from the logical operation circuit so that the connection diagram between the terminal block and the cable can be drawn, and the output is used to draw the drawing on the screen of the display 5 or on the paper by the drawing unit 6. It has been described in detail that necessary data among the internal data used for drawing at that time can be saved and stored in the cable data file.

Next, when the data of the stored and stored cable data file is used for later modification or improvement work, only the necessary cable data connected to the equipment to be worked is determined. The following describes how to perform the extraction. In the following example, a cable switching procedure manual conventionally created by hand is created using data of the above-described cable data file.
In particular, by displaying the data on the left half of the procedure table shown in FIG. 3, basic data on the target cable can be known.

When preparing the table as described above, first, basic data necessary for drawing a procedure book is input in addition to a cable symbol in advance to prepare a basic drawing (SS ₀ ). Step SS ₁
Then, enter the cable symbol on the keyboard and connect the cable.
Use the mouse to select the end side. Next, step S
For file selected in S _2, the A-end side cable data file (*. KBR) to specify with the mouse. Search cable symbol that has been input by the SS ₁ from the specified cable data file at SS _2. This search method is performed according to a flow not shown. Reads the retrieved the appropriate data cable specifications and applications in the SS ₃ (SS _4),
Now specify the cable data file B-end side by the same procedure as SS ₂ in SS _5.

Then, the corresponding data is retrieved in the same procedure as in SS ₃ (SS ₆ ). In SS _7, the start line to start fill in the current data in the instructions mouse, or specified in the keyboard, to come close to the center of the number of lines by heart line number of the cable symbol, specifications, and applications in SS ₈ Perform calculations and place. After that, the data (keeper name / terminal block name / serial number / core color) of one core wire of the data corresponding to the A-end side is read (SS ₉ ). Also, the data (keeper name / terminal block name / serial number / core color) of one core wire of the data corresponding to the B end is read (SS ₁₀ ). As described above, SS ₉ and SS
Each core data read at ₁₀ is arranged (SS ₁₁ ).

In the above example, the cable data is displayed in the cable switching procedure manual. However, it is needless to say that only the data indicating the cable connection state may be displayed independently of the preparation of the switching procedure manual. It is. Or,
The information may be displayed in a program used for another purpose.

[0049]

As described above in detail, the cable connection diagram drawing apparatus of the present invention selects and specifies basic pixel data based on a signal from an input unit, and displays a terminal block figure and characters, symbols, and the like. Draw a cable connection diagram by displaying the cable figure and characters, symbols, etc. on the terminal block, and add extended data to each data at that time, and match the data when drawing the terminal block and cable. The signal for drawing an accurate cable connection diagram by confirmation is calculated and controlled by the logical operation unit and output, and the input signal data with the extended data is stored in the storage unit, so that it is changed or improved later. In the case of construction work, it is possible to immediately access the information of a specific cable only by specifying the information of the cable, and to check the specific cable data and improve the efficiency of the work before the change / improvement work. It is obtained.

[Brief description of the drawings]

FIG. 1 is an overall schematic block diagram of a drawing apparatus according to an embodiment.

FIG. 2 is a schematic flow chart of the operation of the drawing apparatus.

FIG. 3 shows details of a terminal block drawing flow.

Fig. 4 Details of cable drawing flow

Fig. 5 Details of cable drawing flow

FIG. 6 is a detailed view of extended data of a terminal block and a cable.

FIG. 7 is an explanatory diagram of a method of adding extension data.

FIG. 8 shows an example of a format of a temporary file and a cable data file.

FIG. 9 shows details of a switching procedure manual creation flow.

FIG. 10 is a schematic diagram of a control / measurement cable.

FIG. 11 is an example of a cable connection diagram in a monitoring / control panel.

FIG. 12 is a diagram showing names of elements of a terminal block and a cable.

FIG. 13 is a diagram of an example of a cable switching procedure manual

FIG. 14 is an explanatory diagram of drawing by a conventional drawing apparatus.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Logical operation control part 2 Keyboard 3 Coordinate input device 4 Auxiliary storage device 5 Display 6 Drawing device

Claims (2)

[Claims] 1. A terminal block graphic having a predetermined shape to be drawn at a desired position by selecting and specifying basic pixel data such as a straight line, a circle, and a square in a basic data storage unit based on a signal from an input unit and displaying the data. A terminal block output signal that draws a terminal block based on the above data by adding extension data to each of input data such as characters and symbols to be input, and a cable connected to the terminal block and connected to the end thereof A cable figure indicating the connection state with the device to be connected is selected from the basic pixel data and specified and extended to data of a figure of a predetermined shape drawn at a desired position and input data such as characters and symbols to be displayed there. Data is added by an input signal, and a cable connection line output signal for drawing a cable connection diagram based on the data is output after being controlled by a logical operation unit and output based on the output. A cable connection diagram drawing device configured to draw a cable connection diagram including each figure and to store cable data including minimum terminal block data to be stored and stored in a storage unit. 2. A display unit is connected to the logical operation unit, and when cable data stored in the storage unit is required later, a cable symbol is input for a specific cable to specify the cable. The cable connection diagram drawing device according to claim 1, wherein the device can be displayed on a display device.