WO2009133590A1

WO2009133590A1 - Schematic editor and schematic editing program

Info

Publication number: WO2009133590A1
Application number: PCT/JP2008/001127
Authority: WO
Inventors: 炭崎竜平; 井上勝行; 藤岡操代
Original assignee: 三菱電機株式会社
Priority date: 2008-04-30
Filing date: 2008-04-30
Publication date: 2009-11-05
Also published as: JP4990395B2; TW200945084A; TWI371700B; JPWO2009133590A1

Abstract

An originating component assignment portion (1) assigns an originating component, and a destination terminal assignment portion (2) assigns a destination terminal. When connecting unconnected terminals of the originating component to destination terminals, an originating terminal determining portion (3) makes the unconnected terminals of the originating component correspond to the destination terminals based on the order in which the destination terminals were assigned by the destination terminal assignment portion (2) and the preliminarily determined order of the unconnected terminals of the originating component. A connection creating portion (4) connects the unconnected terminals and the destination terminals based on the corresponding relationship between these terminals which has been established by the originating terminal determining portion (3).

Description

Circuit diagram editing apparatus and circuit diagram editing program

The present invention relates to a circuit diagram editing apparatus and a circuit diagram editing program for easily realizing connection between terminals on a circuit diagram in circuit diagram editing.

In a conventional circuit diagram editing apparatus, when connecting terminals on a circuit diagram, two points of a connection source terminal and a connection destination terminal are designated. In addition, there are cases in which automatic connection between terminals is performed in order to facilitate connection work between terminals as in Patent Document 1 and Patent Document 2.
JP 2005-339143 A JP-A-5-197772

In the conventional circuit diagram editing apparatus, when making a connection, two points of a connection source terminal and a connection destination terminal are specified, and therefore the input work is complicated when creating a large number of connections. It was.
In addition, among those that perform automatic connection, in Patent Document 1, since the combination of terminals to be connected is determined based on the proximity of distance, it is possible to connect terminals at distant positions, However, there is a restriction that it is not possible to cross these connections, and it has not always been possible to connect desired terminals. In addition, with respect to Patent Document 2, since the combination of terminals to be connected is determined using the coordinate value and the terminal name as the determination material, when the coordinate position is used as the determination material, between the terminals at the shifted coordinate positions This automatic connection method has the restriction that a terminal naming rule must be established and followed when the terminal name is used as a judgment material. In some cases, connection between the desired terminals may not be obtained.

The present invention has been made to solve the above-described problems, and has an object to create a connection between terminals in a desired combination on a circuit diagram with a small number of inputs.

The circuit diagram editing apparatus according to the present invention is based on the designation order of the connection destination terminal and the predetermined terminal order in the unconnection terminal of the connection source component when performing connection from the unconnection terminal of the connection source component to the connection destination terminal. Thus, the unconnected terminal and the connected terminal of the connection source component to be connected are associated with each other.
This makes it possible to create a connection between terminals in a desired combination on the circuit diagram with a small number of inputs.

BRIEF DESCRIPTION OF THE DRAWINGS It is a block diagram of the circuit diagram editing apparatus by Embodiment 1 of this invention. It is a hardware block diagram of the circuit diagram editing apparatus by Embodiment 1 of this invention. It is explanatory drawing of the example of a screen of the circuit diagram editing apparatus by Embodiment 1 of this invention. It is explanatory drawing of the components information storage area | region of the circuit diagram editing apparatus by Embodiment 1 of this invention. It is explanatory drawing of the terminal information storage area | region of the circuit diagram editing apparatus by Embodiment 1 of this invention. It is explanatory drawing of the connection origin terminal list | wrist of the circuit diagram editing apparatus by Embodiment 1 of this invention. It is explanatory drawing of the connection destination terminal list | wrist of the circuit diagram editing apparatus by Embodiment 1 of this invention. It is a flowchart which shows operation | movement of the circuit diagram editing apparatus by Embodiment 1 of this invention. It is explanatory drawing which shows the screen example before the connection of the edit area of the circuit diagram editing apparatus by Embodiment 1 of this invention. It is explanatory drawing which shows the screen example after the connection of the edit area of the circuit diagram editing apparatus by Embodiment 1 of this invention. It is explanatory drawing which shows the screen example (procedure A) of the edit area of the circuit diagram editing apparatus by Embodiment 1 of this invention. It is explanatory drawing which shows the screen example (procedure B) of the edit area of the circuit diagram editing apparatus by Embodiment 1 of this invention. It is explanatory drawing which shows the screen example (procedure C) of the edit area of the circuit diagram editing apparatus by Embodiment 1 of this invention. It is explanatory drawing which shows the screen example (intersection of connection) of the edit area of the circuit diagram editing apparatus by Embodiment 1 of this invention. It is explanatory drawing which shows the screen example (designation of an empty terminal) of the edit area of the circuit diagram editing apparatus by Embodiment 1 of this invention. It is explanatory drawing which shows the screen example (continuous designation | designated of a connection origin component) of the edit area of the circuit diagram editing apparatus by Embodiment 1 of this invention. It is explanatory drawing which shows the screen example (detour route) of the edit area of the circuit diagram editing apparatus by Embodiment 1 of this invention. It is explanatory drawing which shows the screen example (connection by an oblique line) of the edit area of the circuit diagram editing apparatus by Embodiment 1 of this invention. It is a block diagram of the circuit diagram editing apparatus by Embodiment 2 of this invention. It is a flowchart which shows operation | movement of the circuit diagram editing apparatus by Embodiment 2 of this invention. It is explanatory drawing which shows the screen example of the edit area of the circuit diagram editing apparatus by Embodiment 2 of this invention. It is a block diagram of the circuit diagram editing apparatus by Embodiment 3 of this invention. It is a flowchart which shows operation | movement of the circuit diagram editing apparatus by Embodiment 3 of this invention. It is explanatory drawing which shows the screen example of the edit area of the circuit diagram editing apparatus by Embodiment 3 of this invention. It is a flowchart which shows operation | movement of the circuit diagram editing apparatus by Embodiment 4 of this invention. It is explanatory drawing which shows the screen example of the edit area of the circuit diagram editing apparatus by Embodiment 4 of this invention. It is a block diagram of the circuit diagram editing apparatus by Embodiment 5 of this invention. It is a flowchart which shows operation | movement of the circuit diagram editing apparatus by Embodiment 5 of this invention. It is explanatory drawing which shows the screen example (before an edit start) of the edit area of the circuit diagram editing apparatus by Embodiment 5 of this invention. It is explanatory drawing which shows the screen example (procedure E) of the edit area of the circuit diagram editing apparatus by Embodiment 5 of this invention. It is explanatory drawing which shows the screen example (procedure F) of the edit area of the circuit diagram editing apparatus by Embodiment 5 of this invention. It is a block diagram of the circuit diagram editing apparatus by Embodiment 6 of this invention. It is a flowchart which shows operation | movement of the circuit diagram editing apparatus by Embodiment 6 of this invention. It is explanatory drawing which shows the screen example of the edit area of the circuit diagram editing apparatus by Embodiment 6 of this invention. It is a block diagram of the circuit diagram editing apparatus by Embodiment 7 of this invention. It is a flowchart which shows operation | movement of the circuit diagram editing apparatus by Embodiment 7 of this invention. It is explanatory drawing which shows the screen example of the edit area of the circuit diagram editing apparatus by Embodiment 7 of this invention.

Hereinafter, in order to describe the present invention in more detail, the best mode for carrying out the present invention will be described with reference to the accompanying drawings.
Embodiment 1 FIG.
1 is a block diagram of a circuit diagram editing apparatus according to Embodiment 1 of the present invention.
The circuit diagram editing apparatus shown in FIG. 1 includes a connection source component designating unit 1 for designating a connection source component, a connection destination terminal designating unit 2 for designating a connection destination terminal, and connection source component information designated by the connection source component designating unit 1. The connection destination terminal designation unit 2 receives the click information indicating that the terminal has been designated, and associates the predetermined terminal order of the unconnected terminals of the connection source component with the specified order of the connection destination terminals, Creates connection information between both terminals using the connection destination terminal information specified by the connection source terminal determination unit 3 and the connection destination terminal specification unit 2 to determine the terminal and the connection source terminal information from the connection source terminal determination unit 3 And a display unit 5 that receives connection information from the connection generation unit 4 and displays the connection.

FIG. 2 is a block diagram showing a hardware configuration for realizing the circuit diagram editing apparatus according to Embodiment 1 of the present invention.
The circuit diagram editing apparatus is realized by a PC (personal computer), and includes a control unit 101, a display 102, a keyboard 103, and a pointing device 104. The control unit 101 includes a CPU 105, a memory 106, and a hard disk 107. The control unit 101 performs various processes based on inputs from the keyboard 103 and the pointing device 104, and outputs the processing results to the display 102. The display 102 is a display device for displaying a circuit diagram on a screen. The keyboard 103 and the pointing device 104 are input devices for performing various inputs. The CPU 105 is an arithmetic processing device that performs arithmetic processing as a circuit diagram editing device. The memory 106 is a storage unit that stores various data and programs and constitutes a work area for arithmetic processing by the CPU 105. The hard disk 107 is a storage device for storing various data and programs. The display device is not limited to the display 102, the input device is not limited to the keyboard 103 or the pointing device 104, and the storage device is not limited to the memory 106 or the hard disk 107.

Also, the correspondence between each functional unit in FIG. 1 and the hardware configuration in FIG. 2 is as follows. That is, the connection source part designation unit 1 to the connection creation unit 4 are realized by storing programs corresponding to the respective functions in the hard disk 107, reading these programs by the CPU 105, and executing them using the memory 106. . The connection source component designating unit 1 and the connection destination terminal designating unit 2 have a display function on the display 102 and a function of receiving input from the keyboard 103 and the pointing device 104. Furthermore, the display unit 5 includes the display 102 and its display function. Alternatively, the connection source part designation unit 1 to the connection creation unit 4 may be configured with dedicated hardware.

FIG. 3 shows an execution screen example of a circuit diagram editing program provided by the circuit diagram editing apparatus according to the present embodiment using the display 102. Here, a circuit diagram editing program that uses a function block diagram when creating a program that can be executed on a PLC (programmable logic controller), which is one of circuit diagram editing programs, will be described. The execution screen of the circuit diagram editing program has a main menu 51, a component button 52 for arranging components such as function blocks and functions, an edit area 53 for describing a circuit diagram, and a mode change button 54 for switching an edit mode. This circuit diagram editing program specifies the connection source terminal and the connection destination terminal using the conventional method, creates the connection between both terminals, and specifies the connection source terminal taking advantage of the features of the present invention. There are two editing modes, continuous connection editing mode, which can create connections without any problems. These modes can be freely switched by pressing a continuous connection button or standard button on the mode change button 54 or selecting a corresponding menu item in the main menu 51.

● (Internal processing)
In the circuit diagram editing apparatus according to the present embodiment, component IDs are assigned to the components arranged in the editing area 53 and managed in the arrangement order. Terminal IDs are assigned to the terminals of the respective components in order from the upper left to the lower left and then from the upper right to the lower right. Thereby, a terminal can be uniquely specified by a combination of a component ID and a terminal ID. In this embodiment, a combination of a component ID and a terminal ID is called terminal information.

The circuit diagram editing apparatus according to the present embodiment includes an area for storing two types of circuit diagram information, that is, a component information storage area shown in FIG. 4 and a terminal information storage area as shown in FIG. A circuit diagram is displayed in the editing area 53 using these pieces of information. The component information storage area includes a component ID, a component type, and coordinate information (X coordinate, Y coordinate). The terminal information storage area includes terminal information, coordinate information, input / output types, and connection terminal information. The input / output type indicates whether the terminal has an input attribute or an output attribute. The connection terminal information indicates the terminal of the connection partner of the terminal. When the connection is established, the terminal information of the connection partner is stored, and when the connection is not established, both the component ID and the terminal ID are 0. . In the editing area 53, when editing of component arrangement, inter-terminal connection, or the like is performed, information on the component information storage area and the terminal information storage area is updated.

At the time of execution of connection creation processing using the circuit diagram editing apparatus of the present embodiment, a connection source terminal list (see FIG. 6), a connection destination terminal list (see FIG. 7), and a connection destination terminal counter prepared on the memory 106. The three data storage areas (not shown) are shared and used by the connection source component designating unit 1 to the display unit 5, and the process proceeds. Each data storage area is described below.

-Connection source terminal list The terminal information of the terminal which is in the unconnected state of the component specified by the connection source component specifying unit 1 is held in the order of the terminal ID. If the maximum number of terminals that a single component can have in this embodiment is MAX_NUM, this list has MAX_NUM areas from the first to the MAX_NUMth. Further, all the component IDs in this list are the component IDs of the connection source components and have the same value.

-Connection destination terminal list The terminal information of the terminals specified by the connection destination terminal specification unit 2 is held in the specified order. Similar to the connection source terminal list, this list has MAX_NUM areas from the first to the MAX_NUMth.

• Connection destination terminal counter This area holds an integer value of 0 or more. The number of terminals specified by the connection destination terminal specifying unit 2 is held. This value is the same as the number of terminal information included in the connection destination terminal list.

Next, the connection creation processing of the circuit diagram editing apparatus according to the present embodiment will be described with reference to the flowchart shown in FIG. In the following description, the value at that time of the connection destination terminal counter is assumed to be n.
(Step ST1) Wait for continuous connection edit mode start event First, wait for the input of a continuous connection edit mode start event for changing from the normal edit mode to the continuous connection edit mode.
(Step ST2) Data Initialization When a continuous connection editing mode start event is received in step ST1, the connection destination terminal designation unit 2 and the connection source terminal determination unit 3 perform initialization processing of the data storage area. As initialization processing, the connection source terminal list and the connection destination terminal list are emptied, and the value of the connection destination terminal counter is set to zero.
(Step ST3) Wait for input event Wait for an input event. There are three types of events that can be received here: a connection source component designation event, a connection destination terminal designation event, and a continuous connection editing mode end event.
(Step ST4) Input Event Determination When an event is input in step ST3, the content of the event is determined.
If the event is a continuous connection editing mode end event, the continuous connection editing mode is ended and the normal editing mode is restored. If the event is a connection source component designation event, the process proceeds to step ST5. If the event is a connection destination terminal designation event, the process proceeds to step ST9.

(Step ST5) Connection Source Terminal List Determination If the event is a connection source component designation event as a result of the determination in step ST4, the connection source terminal determination unit 3 determines whether or not the connection source terminal list is empty. If the connection source terminal list is not empty, the process proceeds to step ST6. If the connection source terminal list is empty, the process proceeds to step ST7.
(Step ST6) Data Initialization If the result of determination in step ST5 is that the connection source terminal list is not empty, that is, if a new connection source component is specified with the connection source component already specified, the data storage area Perform initialization processing. The contents of the initialization process are the same as in step ST2. As a result, the information related to the connection source part that was the previous connection process target is discarded, the connection source part specified this time becomes a new connection process target, and the process proceeds to step ST7.
(Step ST7) Connection source terminal information storage The connection source terminal determination unit 3 stores the terminal information of unconnected terminals of the specified connection source component in the connection source terminal list in ascending order of terminal ID.
(Step ST8) Connection Destination Terminal Counter Value Determination The connection source terminal determination unit 3 determines the value of the connection destination terminal counter. If the value of the connection destination terminal counter is 0, the connection destination terminal is not specified, so the process returns to step ST3 to wait for the next event. If the value of the connection destination terminal counter is not 0, the process proceeds to step ST14.

(Step ST9) Unconnected Terminal Remaining Determination As a result of the determination in step ST4, if the event is a connection destination terminal designation event, the connection destination terminal designation unit 2 determines whether or not an unconnected terminal remains in the connection source terminal list. judge. Specifically, the presence or absence of data in the connection source terminal list is checked. If data exists, the number of data in the connection source terminal list is compared with the value n of the connection destination terminal counter. If there is no data in the connection source terminal list, it is determined that there is an unconnection terminal because the connection source component is not specified, and the process proceeds to step ST11. If data exists in the connection source terminal list and n is less than the number of data in the connection source terminal list, it is determined that there is an unconnected terminal, and the process proceeds to step ST11. If data exists in the connection source terminal list and n is equal to or greater than the number of data in the connection source terminal list, it is determined that there is no unconnected terminal, and the process proceeds to step ST10.

(Step ST10) Data initialization As a result of the determination in step ST9, when there is no unconnected terminal, that is, when all the terminals of the specified connection source component are already connected, and a new connection destination terminal is specified. Initialize the data storage area. The contents of the initialization process are the same as in step ST2. As a result, the information related to the connection source component that was the previous connection processing target is discarded, and the process proceeds to step ST11.
(Step ST11) Connection destination terminal counter addition The connection destination terminal designation | designated part 2 adds 1 to a connection destination terminal counter.
(Step ST12) Connection Destination Terminal Information Storage The connection destination terminal designation unit 2 stores the terminal information of the designated connection destination terminal at the nth position in the connection destination terminal list.
(Step ST13) Connection Source Terminal Determination The connection source terminal determination unit 3 receives click information indicating that the connection destination terminal specifying unit 2 has specified a terminal, and there is a connection source terminal corresponding to the specified connection destination terminal. Determine whether. Specifically, it is determined whether or not terminal information exists at the nth position in the connection source terminal list. When there is no terminal information at the nth position in the connection source terminal list, the process returns to step ST3 and waits for the next event. When there is terminal information at the nth position in the connection source terminal list, the process proceeds to step ST14.

(Step ST14) Connection Creation Instruction If the result of determination in step ST8 is that the connection destination terminal counter is 1 or more, the connection source terminal determination unit 3 determines that the connection destination terminal counter value n and the connection source component have no connection. The number of terminals is compared, and creation of connections is instructed by the smaller value (this value is called m). That is, the connection source terminal determination unit 3 requests the connection creation unit 4 to create m connections from the first to the m-th in the connection source terminal list. Further, as a result of the determination in step ST13, if there is terminal information in the nth connection source terminal list, the connection source terminal determination unit 3 makes the connection generation unit 4 create the nth connection in the connection source terminal list. Ask.

(Step ST15) Connection Creation This step is a connection creation process in the connection creation unit 4.
The connection creation unit 4 acquires the terminal information of the connection source terminal and the corresponding connection destination terminal from the connection source terminal number specified by the connection source terminal determination unit 3. When the designated number is p, the p-th terminal information in the connection source terminal list and the p-th terminal information in the connection destination terminal list are acquired. After obtaining the terminal information, create connection information that connects both terminals. If either terminal information cannot be obtained, connection information is not created. When creating multiple pieces of connection information, the above process is repeated for the number of pieces.
Here, the creation of connection information specifically refers to creation of a connection object having attributes such as start point coordinates, end point coordinates, bent corner coordinates, line color, and line width.
Further, the connection creation unit 4 updates the connection terminal information of the connection source terminal and the connection destination terminal in the terminal information storage area when creating the connection information.

(Step ST16) Display This step is a display process in the display unit 5. The connection information received from the connection creation unit 4 is displayed on the display unit 5. When multiple pieces of connection information are received, that number is displayed. After the display, the process returns to step ST3 and waits for the next event.
With the above internal processing, the connection creation processing in the present embodiment is realized.

● (Operation example)
The specific operation of creating a circuit diagram using the circuit diagram editing apparatus of this embodiment will be described below.
In the situation where three parts ABS, SQRT, and SUB as shown in FIG. 9 are already arranged in the editing area 53, a procedure for connecting these parts as shown in FIG. 10 will be described.
Here, the circuit component ABS is a function that outputs the absolute value of the value input to the left input terminal to the right output terminal. The circuit component SQRT is a function that outputs the square root of the value input to the left input terminal to the right output terminal. The circuit component SUB is a function that outputs, to the right output terminal, a value obtained by subtracting the value input to the lower left second input terminal from the value input to the upper left first input terminal.
Hereinafter, a procedure for connecting the ABS output terminal and the SUB first input terminal, and the SQRT output terminal and the SUB second input terminal will be described.

First, the mode change button 54 shown in FIG. 3 is used to change from the normal edit mode to the continuous connection edit mode. When the mode change button 54 is pressed, the process proceeds with steps ST1, ST2, ST3 internally.
Regarding the subsequent procedures, there are three types of procedures depending on the difference in the designation order of the connection source part and the connection destination terminal. The procedures A, B, and C are respectively shown in FIG. 11, FIG. 12, and FIG. Each figure includes an upper part, a middle part, and a lower part, and represents the display state of the editing area 53 in time series from top to bottom.

(Procedure A)
Here, a method of designating a connection source part first and then designating a connection destination terminal in order will be described.
First, a SUB is designated using the pointing device 104 as a connection source part.
At this time, the SUB is highlighted as the connection source part, and the first input terminal of the SUB to be connected is highlighted (upper part of FIG. 11). When designating a SUB, the process proceeds internally with steps ST4, ST5, ST7, ST8, ST3. As a method of specifying the connection source part, the connection source part specification unit 1 displays a part palette showing a list of parts on the editing screen, for example, and the user selects a part from the part palette using the pointing device 104. To specify the wiring source part. Alternatively, any designation method may be used, such as selecting a part to be designated from the part menu or directly inputting a part name using the keyboard 103.

Next, the ABS output terminal is designated using the pointing device 104 as the first connection destination terminal. Thus, the first input terminal (connection source terminal) of the SUB and the output terminal (connection destination terminal) of the ABS are associated with each other, and the connection is displayed. At the same time, the highlighting of the first input terminal of the SUB is canceled and the second input terminal of the SUB to be connected next is highlighted (in the middle part of FIG. 11). When designating the output terminal of the ABS, the process proceeds internally with steps ST4, ST9, ST11, ST12, ST13, ST14, ST15, ST16, ST3.

The SQRT output terminal is designated using the pointing device 104 as the second connection destination terminal. Thereby, the second input terminal (connection source terminal) of the SUB and the output terminal (connection destination terminal) of the SQRT are associated with each other, and the connection is displayed. At the same time, the highlighting of the second input terminal of the SUB is canceled and the output terminal of the SUB to be connected next is highlighted (lower part of FIG. 11). When designating the output terminal of SQRT, the process proceeds internally with steps ST4, ST9, ST11, ST12, ST13, ST14, ST15, ST16, ST3.

(Procedure B)
Here, a method of designating the connection destination terminal in order and then designating the connection source component will be described.
First, the ABS output terminal is designated using the pointing device 104 as the first connection destination terminal. At this time, the designated terminal is highlighted and a number “1” indicating the designation order is displayed in the vicinity of the terminal (upper part of FIG. 12). When designating the output terminal of the ABS, the process proceeds internally with steps ST4, ST9, ST11, ST12, ST13, ST3.

Next, the output terminal of SQRT is designated using the pointing device 104 as the second connection destination terminal. At this time, the designated terminal is highlighted and a number “2” indicating the designation order is displayed in the vicinity of the terminal (middle part of FIG. 12). When designating the output terminal of SQRT, the process proceeds internally with steps ST4, ST9, ST11, ST12, ST13, ST3.
In this state, the SUB is designated using the pointing device 104 as a connection source component.
Thereby, the first input terminal (connection source terminal) of SUB and the output terminal (connection destination terminal) of ABS, the second input terminal (connection source terminal) of SUB, and the output terminal (connection destination terminal) of SQRT are associated with each other. Each connection is displayed. At the same time, the number indicating the designated order displayed near the connection destination terminal disappears, the highlighting of the connection destination terminal is canceled, and the output terminal of the SUB that is the connection source component and the SUB that is the next connection target is emphasized. Is displayed (lower part of FIG. 12). When designating a SUB, the process proceeds internally with steps ST4, ST5, ST7, ST8, ST14, ST15, ST16, ST3.

(Procedure C)
Here, a method will be described in which the connection source part is specified while the connection destination terminal is specified, and then the connection destination part is continuously specified.
First, the ABS output terminal is designated using the pointing device 104 as the first connection destination terminal. At this time, the designated terminal is highlighted and a number “1” indicating the designation order is displayed in the vicinity of the terminal (upper part of FIG. 13). When designating the output terminal of the ABS, the process proceeds internally with steps ST4, ST9, ST11, ST12, ST13, ST3.
In this state, the SUB is designated using the pointing device 4 as the connection source component.
Thus, the first input terminal (connection source terminal) of the SUB and the output terminal (connection destination terminal) of the ABS are associated with each other, and the connection is displayed. At the same time, the number indicating the designation order displayed in the vicinity of the connection destination terminal disappears, the highlighting of the connection destination terminal is canceled, and the second input terminal of the SUB that is the connection source component and the next SUB to be connected Is highlighted (middle of FIG. 13). When designating a SUB, the process proceeds internally with steps ST4, ST5, ST7, ST8, ST14, ST15, ST16, ST3.

The SQRT output terminal is designated using the pointing device 104 as the second connection destination terminal. At this time, the second input terminal (connection source terminal) of the SUB is associated with the output terminal (connection destination terminal) of the SQRT, and the connection is displayed. At the same time, the highlighting of the second input terminal of the SUB is canceled and the output terminal of the SUB to be connected next is highlighted (lower part of FIG. 13). When designating the output terminal of SQRT, the process proceeds internally with steps ST4, ST9, ST11, ST12, ST13, ST14, ST15, ST16, ST3.

As described above, the creation of the desired two connections as shown in FIG. 10 can be realized with the same input effort by any of the procedures A, B, and C.

In the case of the conventional method, the connection was created by specifying the connection source terminal and the connection destination terminal of each connection. Therefore, when creating two connections, use a pointing device or the like four times (two One connection source terminal and two connection destination terminals) had to be specified.
On the other hand, in the circuit diagram editing apparatus according to the present embodiment, by specifying the connection source component, it is not necessary to explicitly specify the connection source terminal, so three times (one connection source component and two connection destinations). It is possible to create two connections by specifying the terminal, and the number of steps for creating the connection is reduced. In this example, two connections are created from the connection source parts. However, as the number of connections starting from the connection source parts increases, the effect of reducing the number of labor compared to the conventional method increases.

<Intersection of connection>
In addition, by using the circuit diagram editing apparatus according to the present embodiment, it is possible to easily create crossed connections that were difficult in the automatic connection processing based on distance. For example, in the above three types of descriptions, when designating the connection destination terminal, the output terminal of SQRT is designated after the designation of the output terminal of ABS, but by reversing the designation order of these terminals, FIG. It is possible to easily create a crossed connection that cannot be created by a conventional automatic connection method such as 14. Note that the specific operation of the connection creation process is the same as any of the above-described three types of procedures, and thus description thereof is omitted here.

<Specifying empty terminals>
In the circuit diagram editing apparatus according to the present embodiment, when the connection creation process is performed, if there is no connection destination terminal yet, it is possible to hold the connection source terminal that is not connected as an empty terminal. It is. For example, in the procedure A described above, a procedure when the first input terminal of the SUB is an empty terminal and only the second input terminal of the SUB is connected will be described. The state of the editing area 53 is shown in FIG.

First, a SUB is designated using the pointing device 104 as a connection source part.
At this time, the SUB is highlighted as the connection source part, and the first input terminal of the SUB to be connected is highlighted (upper part in FIG. 15). When designating a SUB, the process proceeds internally with steps ST4, ST5, ST7, ST8, ST3.
Next, the first input terminal of the SUB is designated using the pointing device 104 in order to make the first input terminal of the SUB an empty terminal. As a result, the first input terminal of the SUB is not connected to any terminal, the highlighting of the first input terminal of the SUB is released, and the second input terminal of the SUB to be connected next is highlighted (FIG. 3). 15 middle). That is, the designation of the empty terminal is realized by designating the connection source terminal when designating the connection destination terminal. When the first SUB input terminal is designated, the process proceeds internally with steps ST4, ST9, ST11, ST12, ST13, ST14, ST15, ST16, ST3. However, in step ST15, since the connection source terminal and the connection destination terminal are the same terminal, no connection is created.

Next, the connection between the second input terminals of SQRT and SUB is performed by the same processing as in procedure A (see the lower part of FIG. 15).
Thereby, when there is no connection destination terminal corresponding to all the terminals of the connection source part on the editing area 53, the connection source terminal without the connection destination terminal is reserved as an empty terminal, and the connection with the connection destination terminal is present. For the original terminal, it is possible to perform the connection creation processing according to the present invention.

In this case, the empty terminal is specified by specifying the connection source terminal using the pointing device 104 when specifying the connection destination terminal. However, the method of specifying the empty terminal is not limited to this operation. For example, by using the pointing device 104, a position that is neither a circuit component nor a terminal on the editing area 53 is specified, or a space key, a Tab key, or the like on the keyboard 103 is pressed, and an empty terminal is specified. May be performed.

<Continuous designation of wiring source parts>
Up to this point, we have described the process of specifying a single connection source part and connecting to the unconnected terminals of that part, but of course it is also possible to specify multiple connection source parts in succession and perform connection processing. is there. If a part (α) is specified as the connection source part and the connection process proceeds, and then the part (β) is specified as the connection source part, the connection source part designation is changed from (α) to (β). The connection destination terminal to be specified in the following is associated with the unconnected terminal of the component (β) in the terminal order, and a connection is created.

For example, when ABS is designated as the connection source component from the final state of procedure A, the result is as shown in the upper part of FIG. 16, and the ABS and ABS input terminals are highlighted. When the ABS is designated, the process proceeds internally with steps ST4, ST5, ST6, ST7, ST8, ST3. In step ST5, since SUB is designated as the connection source part, the process proceeds to step ST6, where data initialization processing is performed, and the process is advanced using ABS as a new connection source part.
Next, when the SUB output terminal is designated as the connection destination terminal, the ABS input terminal to be connected is connected to the SUB output terminal designated as the connection destination terminal (lower part of FIG. 16).
As described above, after the SUB connection process is performed, the ABS connection process can be continuously performed without ending the continuous connection edit mode.

If the connection source part (β) is specified prior to the specification of the connection destination terminal corresponding to (β), the connection creation process can be performed continuously by the above method, but the connection destination terminal corresponding to (β) Is designated before the designation of the connection source part (β), the connection creation processing can be continuously performed by the following method. When all terminals of (α) are in the connected state, the subsequent connection destination terminal specification is associated with the connection source part (β) specified thereafter, so an explicit operation is performed. The connection creation process for (β) can be performed. When (α) has an unconnected terminal and you want to specify a connection destination terminal corresponding to the next connection source part (β), you must explicitly end the connection creation process for (α). A connection creation process for (β) can be performed. For example, an operation of simultaneously pressing the left and right buttons of the pointing device may be assigned to an end operation of the connection creation process for the current connection source component.

<Limitation of input or output terminals>
In the present embodiment, the method of performing the connection processing using all terminals as the connection source terminals regardless of the input / output attributes of the terminals of the connection source parts has been described, but considering the input / output attributes of the terminals of the connection source parts. In addition, only the input terminal or only the output terminal can be the target of the connection source terminal. For this, a means for explicitly switching may be prepared, or the function of the circuit diagram editing apparatus may be determined in advance. For example, the structure which makes only the input terminal of a connection origin component the object of a connection origin terminal can be considered. The difference in the internal processing of the circuit diagram editing apparatus in this case is that only the terminals having the input attribute are stored in the connection source terminal list when the connection source terminal information is stored in step ST7.

<Connection creation method>
In the present embodiment, after the association between the connection destination terminal and the connection source terminal is confirmed, the connection between the terminals is drawn without an explicit instruction. Various policies can be considered for establishing a connection route at that time. Here, the shortest route is calculated by a combination of a vertical line and a horizontal line, and drawing is performed according to the route. As a method for calculating a route, for example, an automatic route search method disclosed in Japanese Patent Application Laid-Open No. 60-8982 can be used.
If an obstacle such as another circuit component exists on the calculated route, the route that bypasses the obstacle is recalculated as shown in FIG. 17, and the connection is drawn according to the bypass route. If another connection already exists on the calculated route and a plurality of lines overlap, the route shifted from the position of the existing connection may be recalculated and the connection drawn according to the route. . Note that whether or not there are other connections or other circuit components on the calculated path can be determined based on the X and Y coordinates of the circuit components and terminals.
In the present embodiment, the connection is realized by a combination of a vertical line and a horizontal line, but an oblique line may be used as shown in FIG.
In addition, here, when calculating the route, the policy of taking the shortest route is used, but other policies such as a policy for minimizing the number of bends and a policy for minimizing the intersection of connection lines can be considered. A route calculation method may be used.

<Specifying connection destination parts>
In the present embodiment, when a connection destination terminal is specified, the corresponding terminal has been specified, but a component having a connection destination terminal (connection destination component) may be specified. When there is only one unconnected terminal of the connection destination component, the processing proceeds with the unconnected terminal as the connection destination terminal. When there are a plurality of unconnected terminals of the connection destination part, the process proceeds with the connection terminal having the smallest terminal number among the unconnection terminals of the connection destination part.

As described above, according to the circuit diagram editing apparatus of the first embodiment, the connection source component designating unit for designating the connection source component, the connection destination terminal designating unit for designating the connection destination terminal, and the unconnected connection source component When connecting from the terminal to the connection destination terminal, the connection source part to be connected based on the specified order of the connection destination terminal by the connection destination terminal specifying unit and the predetermined terminal order of the unconnected terminal of the connection source part A connection source terminal determination unit for associating an unconnected terminal with a connection destination terminal, and a connection creation unit for connecting between the unconnection terminal and the connection destination terminal associated with each other at the connection source terminal determination unit Therefore, it is possible to realize connection between desired terminals without explicitly designating the connection source terminal, and therefore, it is possible to reduce the trouble of editing the circuit diagram.

In addition, according to the circuit diagram editing apparatus of the first embodiment, the connection source terminal determination unit is responsive to the specification of the connection source component by the connection source component specification unit and the specification of the connection destination terminal by the connection destination terminal specification unit. Since the unconnected terminal and the connection destination terminal of the connection source part are associated with each other, the specification of the connection source part and the specification of the connection destination terminal can be performed in any order. Connections can be created with a flexible operation procedure according to the situation. For example, the circuit diagram editing apparatus according to the present embodiment performs connection creation processing according to different operation procedures, changes some operation modes, and the like, as described as procedure A, procedure B, and procedure C in the embodiment. Therefore, the user can create a connection using a desired operation procedure.

Further, according to the circuit diagram editing program of the first embodiment, when connecting from the unconnected terminal of the connection source component to the specified connection destination terminal, the specified order of the connection destination terminal and the connection source component Based on a predetermined terminal order in the connection terminal, a connection source terminal determination unit for associating an unconnection terminal and a connection destination terminal of a connection source component to be connected, and a connection source terminal determination unit that is not associated with the connection source terminal determination unit Since it is made to function as a connection creation unit that connects between the connection terminal and the connection destination terminal, a circuit diagram editing apparatus that can reduce the trouble of circuit diagram editing can be realized on a computer.

Embodiment 2. FIG.
In the second embodiment, the terminal order of the unconnected terminals of the connection source component is dynamically determined according to a predetermined terminal order determination rule.
FIG. 19 is a configuration diagram showing a circuit diagram editing apparatus according to the second embodiment.
The configuration of the circuit diagram editing apparatus according to the present embodiment is the same as that of the first embodiment except that the terminal order determining unit 6 is added to the configuration of the first embodiment. The terminal order determination unit 6 is configured to determine the terminal order of the unconnected terminals of the connection source part according to a predetermined terminal order determination rule when the connection source part is specified by the connection source part specification unit 1. Has been.
The hardware configuration for realizing the circuit diagram editing apparatus according to the present embodiment is the same as the circuit configuration shown in FIG. 2. For the terminal order determination unit 6, a program corresponding to the function is stored in the hard disk 107. It is realized by being stored and executed by the CPU 105.

Hereinafter, the operation of the second embodiment will be described.
In the first embodiment, the terminal order of a certain circuit component is determined in advance and is not changed.
On the other hand, the circuit diagram editing apparatus according to the present embodiment includes a terminal order determination unit 6 that determines the terminal order according to a predetermined terminal order determination rule. The terminal order of the unconnected terminals of the connection source component is dynamically changed according to the component arrangement status.

● (Internal processing)
The terminal order determination unit 6 has a terminal order determination rule inside. The terminal order determination rule includes a condition part and a priority designation part. When the contents written in the condition part are satisfied, the terminal order is corrected according to the contents written in the priority designation part.
The flow of internal processing at the time of creating a connection in the present embodiment is the same as that in the first embodiment except for the connection source terminal information storage process in step ST7 in FIG. The flow of the process of step ST7 in this Embodiment is shown in the flowchart of FIG.

(Step ST21) Terminal Order Determination Rule Determination The terminal order determination unit 6 determines whether the contents of the condition part of the terminal order determination rule are satisfied. If not, nothing is done and the process proceeds to step ST23. If it is established, the process proceeds to step ST22.
(Step ST22)
When the determination result of step ST21 is established, the terminal ID of the connection source terminal is corrected according to the contents written in the priority designation part of the terminal order determination rule.
(Step ST23)
The connection source terminal determination unit 3 stores, in the connection source terminal list, terminal information of unconnected terminals included in the specified connection source component in ascending order of terminal ID.

● (Operation example)
Here, the operation when the following content is specified as the terminal order determination rule will be described.
Condition part: The wiring source part has an input terminal of the same type as the output terminal of the circuit part arranged immediately before.
Priority designation part: Prioritizes the corresponding terminal.

In the situation where three parts of ABS, SQRT, and FUNC as shown in the upper part of FIG. 21 are arranged in the editing area 53 (see FIG. 3), FUNC is designated as a connection source part, and the second input terminal of FUNC The operation when connecting the output terminals of the SQRT will be described.
In the part called FUNC, the first input terminal at the upper left is an integer type (INT type), the second input terminal at the lower left is a real number type (REAL type), and the output terminal on the right side is an integer type. Here, it is assumed that the component placed immediately before is SQRT.

When FUNC is specified as the connection source terminal by the connection source component specifying unit 1, the terminal order determination unit 6 determines that the output terminal of the SQRT, which is the component placed immediately before, is a real number type, so that the FUNC that is the connection source terminal If there is a real type terminal among the input terminals, the terminal is given priority over other terminals.
Here, since there is a second input terminal of FUNC as a terminal that meets the conditions, this terminal is a connection source terminal to be connected first. As shown in the middle part of FIG. 21, FUNC is highlighted as the connection source terminal, and the second input terminal is highlighted as the first connection source terminal.
Next, if SQRT is specified as the connection destination terminal, the SQRT output terminal and the FUNC second input terminal are connected as shown in the lower part of FIG. 21, and the FUNC first input terminal is connected as the next connection source terminal. Highlighted.
The order of designation of the FUNC connection source terminals in the configuration of the first embodiment is the order of the first input terminal, the second input terminal, and the output terminal, but the predetermined terminal order is determined by the configuration of the present embodiment. By applying the rule, the second input terminal, the first input terminal, and the output terminal are changed in this order.

Here, the case was explained with the terminal order decision rule that gives priority to the case where the wiring source component has the same type of input terminal as the output terminal type of the circuit component placed immediately before, but the terminal order decision rule is A desired one can be set. For example, a terminal order determination rule may be adopted in which priority is given to the case where the connection source component has the same type of input terminal as that of the unconnected output terminal drawn on the editing area 53.

As described above, according to the circuit diagram editing apparatus of the second embodiment, when a connection source component is designated, the terminal order of unconnected terminals of the connection source component is determined according to a predetermined terminal order determination rule. A terminal order determination unit that performs connection when the terminal order determination unit determines the terminal order, and associates the unconnected terminal of the connection source component with the connection destination terminal in the terminal order. Therefore, the terminal order of the connection source parts to be connected can be dynamically changed according to the terminal order determination rule, and therefore the connection work can be performed more flexibly.

Embodiment 3 FIG.
In the third embodiment, a junction for branching a value is inserted on the connection.
FIG. 22 is a block diagram showing a circuit diagram editing apparatus according to the third embodiment.
This circuit diagram editing apparatus is obtained by adding an unconnected terminal determination unit 7 having a junction insertion unit 8 to the circuit diagram editing apparatus of the first embodiment. The unconnected terminal determination unit 7 determines whether or not the connection destination terminal specified by the connection destination terminal specifying unit 2 is an unconnected terminal. If the terminal is not an unconnected terminal, the junction insertion unit 8 determines a junction. It is a functional part to be inserted. The junction insertion unit 8 is a functional unit that inserts a junction for branching a value on the connection. Since the configuration other than this is the same as that of the first embodiment, the same reference numerals are given to corresponding portions, and the description thereof is omitted.
The hardware configuration of the present embodiment is the same as that of the first embodiment, and the unconnected terminal determination unit 7 stores a program corresponding to the function in the hard disk 107 and is read and executed by the CPU 105. Is realized.

Hereinafter, the operation of the third embodiment will be described.
In the present embodiment, processing when the terminal designated as the connection destination terminal in Embodiment 1 is not an unconnected terminal will be described. If it is not an unconnected terminal, a junction for branching the value is automatically inserted on the connection. Thereby, the trouble of explicitly inserting the junction is reduced.

● (Internal processing)
The flow of internal processing at the time of creating a connection in the present embodiment is the same as the flow of the first embodiment except for the connection destination terminal information storage process in step ST12 in FIG. The flow of the process of step ST12 in this Embodiment is shown in the flowchart shown in FIG.
(Step ST31) Unconnected State Determination The unconnected terminal determination unit 7 determines whether the connection destination terminal specified by the connection destination terminal specifying unit 2 is an unconnected terminal. If it is an unconnected terminal, no special processing is performed and the process proceeds to step ST33. If it is not an unconnected terminal, the process proceeds to step ST32.
(Step ST32) Junction Insertion If the determination result in step ST31 is not an unconnected terminal, the junction insertion unit 8 inserts a junction for branching a value on a line already connected to the connection destination terminal. After inserting the junction, the process proceeds to step ST33.
(Step ST33) Connection Destination Terminal Information Storage The connection destination terminal designation unit 2 stores the connection destination terminal information in the connection destination terminal list. Here, when a junction is inserted in step ST32, the junction becomes a connection destination terminal, and information on the junction is stored in the connection destination terminal list.

● (Operation example)
In the editing area 53 (see FIG. 3), the four parts ADD, ABS, SQRT, and SUB as shown in the upper part of FIG. 24 are arranged, and the second input terminal of ADD and the output terminal of ABS are already connected. The operation when the first input terminal of the SUB and the output terminal of the ABS are connected will be described.
First, a SUB is designated using the pointing device 104 as a connection source part. At this time, the SUB is highlighted as the connection source part, and the first input terminal of the SUB to be connected is highlighted (in the middle part of FIG. 24). When designating a SUB, the process proceeds internally with steps ST4, ST5, ST7, ST8, ST3.
Next, an ABS output terminal is designated using the pointing device 104 as a connection destination terminal. At this time, since the ABS output terminal is already connected to the ADD second input terminal and is not an unconnected terminal, it is determined by the unconnected terminal determination unit 7 that the connection has been completed. The junction that distributes the value to is inserted. And the connection which uses this junction as a connection tip terminal is displayed. At the same time, the highlighting of the first input terminal of the SUB is canceled, and the second input terminal of the SUB to be connected next is highlighted (lower part of FIG. 24). When designating the output terminal of the ABS, the process proceeds internally with steps ST4, ST9, ST11, ST31, ST32, ST33, ST13, ST14, ST15, ST16, ST3.

As described above, according to the circuit diagram editing apparatus of the third embodiment, it is determined whether or not the connection destination terminal specified by the connection destination terminal specifying unit is an unconnected terminal. Is equipped with an unconnected terminal determination unit that inserts a junction that branches a value on the connection, so that a junction that branches a value is automatically inserted, and a terminal that is not an unconnected terminal can be easily selected as a connection destination terminal It becomes.

Embodiment 4 FIG.
In the fourth embodiment, connection processing is performed in consideration of input / output attributes of terminals.
In the first embodiment, the connection processing is performed without considering the input / output attribute of each terminal. However, in this embodiment, the input / output attribute is set in a situation where each terminal has the input / output attribute. An example of connection in consideration is described. When considering the input / output attributes of the terminals, the connection between the input terminals and the output terminals is impossible, and only the connection between the input terminal and the output terminal is possible.
Here, since the configuration on the drawing is the same as that of FIG. 1 of the first embodiment, description will be made with reference to FIG. Although the basic function of the connection source terminal determination unit 3 of the fourth embodiment is the same as that of the connection source terminal determination unit 3 of the first embodiment, when the connection process is performed, the connection between the input terminal and the output terminal of the circuit component is performed. It is comprised so that only this connection may be performed. Other configurations are the same as those of the first embodiment. The hardware configuration of the present embodiment is the same as that shown in FIG.

Hereinafter, the operation of the fourth embodiment will be described.
● (Internal processing)
In the first embodiment, three types of connection source terminal list, connection destination terminal list, and connection destination terminal counter are prepared as data holding areas. However, in this embodiment, input and output are provided in each of the three types of areas. There are a total of six types of data holding areas (input connection source terminal list, output connection source terminal list, input connection destination terminal list, output connection destination terminal list, input connection destination terminal counter, and output connection destination terminal counter. seed).
The data structure of the input connection source terminal list and the output connection source terminal list is the same as that of the connection source terminal list, and the data structure of the input connection destination terminal list and the output connection source terminal list is the same as that of the connection destination terminal list.

In order to realize connection according to the input / output attributes of the terminal, the six types of data holding areas are divided into two areas: an input connection destination terminal data holding area and an output connection destination terminal data holding area. The data holding area for the input connection destination terminal is a data holding area used when the connection destination terminal has an input attribute, and consists of three types: an input connection destination terminal list, an input connection destination terminal counter, and an output connection source terminal list. . The data holding area for the output connection destination terminal is a data holding area used when the connection destination terminal has an output attribute, and consists of three types: an output connection destination terminal list, an output connection destination terminal counter, and an input connection source terminal list. .

If a terminal with an input attribute is specified as the connection destination terminal by associating the output connection source terminal list with the input connection destination terminal list, and the input connection source terminal list with the output connection destination terminal list, the output attribute of the connection source part When a terminal having an output attribute is designated as a connection destination terminal, the terminal can be connected to a terminal having an input attribute of the connection source component.

FIG. 25 is a flowchart showing internal processing when creating a connection in the circuit diagram editing apparatus according to the present embodiment. This flowchart is different from the contents of processing in several steps, but the basic processing flow is the same as that of the first embodiment shown in FIG. In the following, steps that differ in processing will be described.

(Step ST402) (Step ST406) (Step ST410) Data initialization In the data initialization process, the input connection source terminal list, the output connection source terminal list, the input connection destination terminal list, the output connection destination terminal list, and the input connection destination terminal Six types of data holding areas of the counter and the output connection destination terminal counter are initialized by the connection destination terminal designating unit 2 and the connection source terminal determining unit 3.
(Step ST405) Connection source terminal list determination As a result of the determination in step ST4, if the event is a connection source component designation event, the connection source terminal determination unit 3 has an empty input connection source terminal list and an output connection source terminal list. Determine whether or not. If either the input connection source terminal list or the output connection source terminal list is not empty, the process proceeds to step ST406. If the input connection source terminal list and the output connection source terminal list are empty, the process proceeds to step ST407.
(Step ST407) Connection source terminal information storage The connection source terminal determination unit 3 stores in the input connection source terminal list the terminal information of the unconnected input terminals of the specified connection source parts in ascending order of the terminal IDs, and the output connection In the original terminal list, the terminal information of the unconnected output terminals of the designated connection source component is stored in ascending order of the terminal IDs.
(Step ST408) Connection destination terminal counter value determination The connection source terminal determination part 3 determines the value of an input connection destination terminal counter and an output connection destination terminal counter. If the values of both the input connection destination terminal counter and the output connection destination terminal counter are 0, the connection destination terminal is not specified, so the process returns to step ST3 and waits for the next event. If the value of either the input connection destination terminal counter or the output connection destination terminal counter is not 0, the process proceeds to step ST414.

(Step ST409) Unconnected terminal remaining determination The connection destination terminal designating unit 2 determines whether or not unconnected terminals remain in the input connection source terminal list and the output connection source terminal list. Check the existence of data in the input connection source terminal list and the output connection source terminal list. If data exists in the input connection source terminal list, the number of data in the input connection source terminal list and the value of the output connection destination terminal counter (this value) If no data exists in the output connection source terminal list, the number of data in the output connection source terminal list is compared with the value of the input connection destination terminal counter (this value is set to ni).
If there is no data in both the input connection source terminal list and the output connection source terminal list, the connection source component is in an unspecified state, so it is determined that there is an unconnected terminal, and the process proceeds to step ST411. If there is data in the input connection source terminal list and no is less than the number of data in the input connection source terminal list, it is determined that there is an unconnected terminal, and the process proceeds to step ST411. If there is data in the output connection source terminal list and ni is less than the number of data in the output connection source terminal list, it is determined that there is an unconnected terminal, and the process proceeds to step ST411.
In cases other than the above, it is determined that there is no unconnected terminal, and the process proceeds to step ST410.

(Step ST411) Connection destination terminal counter addition If the designated connection destination terminal has an input attribute, the connection destination terminal specifying unit 2 adds 1 to the input connection destination terminal counter. If the designated connection destination terminal has an output attribute, the connection destination terminal specifying unit 2 adds 1 to the output connection destination terminal counter.
(Step ST412) Connection destination terminal information storage If the designated connection destination terminal has an input attribute, the connection destination terminal designation unit 2 stores the terminal information of the designated connection destination terminal in the nith position of the input connection destination terminal list. store. If the designated connection destination terminal has an output attribute, the connection destination terminal designating unit 2 stores the terminal information of the designated connection destination terminal in the no-th place in the output connection destination terminal list.
(Step ST413) Connection source terminal determination The connection source terminal determination unit 3 receives click information indicating that the connection destination terminal specification unit 2 has specified a terminal, and there is a connection source terminal corresponding to the specified connection destination terminal. Determine whether. If the designated connection destination terminal has an input attribute, it is determined whether or not terminal information exists at the ni-th in the output connection source terminal list. If there is no corresponding terminal information in the output connection source terminal list, the process returns to step ST3 and waits for the next event. If there is terminal information corresponding to the output connection source terminal list, the process proceeds to step ST414. If the designated connection destination terminal is an output attribute, it is determined whether or not terminal information exists in the no-th input connection source terminal list. If there is no corresponding terminal information in the input connection source terminal list, the process returns to step ST3 and waits for the next event. If there is terminal information corresponding to the input connection source terminal list, the process proceeds to step ST414.

(Step ST414) Connection creation instruction The connection source terminal determination unit 3 compares ni and the number of unconnected terminals of the output connection source component, and connects the connection by the smaller value (this value is called mi). Instruct creation. That is, the connection origin terminal determination unit 3 requests the connection creation unit 4 to create mi connections from the first to the mith in the output connection source terminal list. Next, the connection source terminal determination unit 3 compares no and the number of unconnected terminals of the input connection source component, and instructs the creation of connections by the smaller value (this value is called mo). . That is, the connection origin terminal determination unit 3 requests the connection creation unit 4 to create mo connections from the first to the moth in the input connection source terminal list. Moreover, when there exists applicable connection origin terminal information as a result of determination by step ST413, the connection origin terminal determination part 3 requests the connection preparation part 4 to produce the connection about a corresponding connection origin terminal.

● (Operation example)
Here, an operation example of the present embodiment will be described. The state of the editing area 53 is shown in FIG. As shown in the uppermost part of FIG. 26, four parts of ABS, SQRT, SUB, and ADD are arranged. The left terminal of each component has an input attribute, and the right terminal has an output attribute.
First, a SUB is designated using the pointing device 104 as a connection source part.
At this time, the SUB is highlighted as the connection source part, and the first input terminal and the output terminal of the SUB to be connected are highlighted (second from the top in FIG. 26). When designating a SUB, the process proceeds internally with steps ST4, ST405, ST407, ST408, ST3.

Next, the ABS output terminal is designated using the pointing device 104 as the first connection destination terminal. At this time, since the connection destination terminal is an output terminal, the connection source terminal becomes the first input terminal of the SUB that is the connection target terminal having the input attribute, and both terminals are associated with each other and the connection is displayed. At the same time, the highlighting of the first input terminal of the SUB is canceled, and the second input terminal and the output terminal of the SUB to be connected next are highlighted (third from the top in FIG. 26). When designating the output terminal of the ABS, the process proceeds internally with steps ST4, ST409, ST411, ST412, ST413, ST414, ST415, ST416, ST3.

The first input terminal of the ADD is specified using the pointing device 104 as the second connection destination terminal. At this time, since the connection destination terminal is an input terminal, the connection source terminal becomes an output terminal of a SUB that is a connection target terminal having an output attribute, both terminals are associated with each other, and a connection is displayed. At the same time, the highlighted display of the SUB output terminal is canceled and the second input terminal of the SUB to be connected next is highlighted (fourth from the top in FIG. 26). When designating the first input terminal of ADD, the process proceeds internally with steps ST4, ST409, ST411, ST412, ST413, ST414, ST415, ST416, ST3.

The SQRT output terminal is specified using the pointing device 104 as the third connection destination terminal. At this time, since the connection destination terminal is the output terminal, the connection source terminal becomes the second input terminal of the SUB that is the connection target terminal having the input attribute, and both terminals are associated with each other and the connection is displayed. At the same time, since the connection of all the terminals of the SUB is completed, the highlighting of the SUB and the second input terminal of the SUB is canceled (lowermost part in FIG. 26). When designating the output terminal of SQRT, the process proceeds internally with steps ST4, ST409, ST411, ST412, ST413, ST414, ST415, ST416, ST3.

As described above, according to the circuit diagram editing apparatus of the fourth embodiment, in consideration of the input / output attribute of the terminal, the connection source terminal determination unit performs the connection process between the input terminal and the output terminal of the circuit component. Since it is configured to perform only the connection, there is no restriction on the specification order regarding the input / output attributes of the terminal, that is, the output terminal connection process is performed after the input terminal connection process of the connection source part, the input terminal side connection and the output terminal side These connections can be performed in an arbitrary order. However, it is necessary to specify in the terminal order in the input terminal and in the terminal order in the output terminal.
Also, terminals with input attributes and terminals with output attributes are never connected, and terminals with input attributes are always connected with terminals with output attributes. It can be correct.

Embodiment 5. FIG.
In the fifth embodiment, a part is designated as a connection source part simultaneously with the placement of the part.
FIG. 27 is a block diagram showing a circuit diagram editing apparatus according to the present embodiment. The configuration of the circuit diagram editing apparatus according to the present embodiment is the same as that of the first embodiment except that the component placement unit 9 is added to the configuration of the first embodiment. The component placement unit 9 is configured to place a component and simultaneously designate the placement component as a connection source component.
The hardware configuration for realizing the circuit diagram editing apparatus according to the fifth embodiment is the same as that of the first embodiment. The component placement unit 9 stores a program corresponding to the function in the hard disk 107 and is executed by the CPU 105. It is realized by being read and executed.

In the present embodiment, a method for creating a connection by automatically designating a component to be arranged as a connection source component when the component is arranged using the component arrangement unit 9 will be described.
● (Internal processing)
In the present embodiment, when the component placement unit 9 places a component, a connection source component designation event is issued. As a result, the component to be arranged automatically becomes the connection source component, and the connection process can be performed.
FIG. 28 is a flowchart showing the flow of processing of the fifth embodiment.
The processing flow shown in FIG. 28 is obtained by adding steps ST51, ST52, and ST53 to the flowchart of the first embodiment shown in FIG. The processing contents of the added steps are shown below.

(Step ST51) Placement Event Determination It is determined whether the input event is a component placement event by the component placement unit 9. If it is a component placement event, the process proceeds to step ST52. If it is an event other than a component placement event (connection source component designation event, connection destination terminal designation event, continuous connection editing mode end event), the process proceeds to step ST4, and thereafter the same processing as in the first embodiment is performed.
(Step ST52) Component Placement Processing When a component placement event is received, the component placement unit 9 places the designated component at the designated coordinates. At the time of arrangement, information on the parts corresponding to the part information storage area and the terminal information storage area and the terminals of the parts are stored.
(Step ST53) Connection source component designation event issuance The component placement unit 9 issues a connection source component designation event with the placed component as the connection source component after the placement of the components is completed. After issuing the event, the process proceeds from step ST4 to step ST5, and the subsequent processing is the same as in the first embodiment.

● (Operation example)
In actual circuit diagram editing work, circuit diagram editing is often performed by repeating component placement work and inter-terminal connection work, such as placing a new part and connecting the terminal of the part to an existing terminal. . When the circuit diagram is edited by this method, in the configuration of the first embodiment, a procedure is required in which the arranged component is designated as the connection source component. By automatically processing the arranged parts as the connection source parts, it is not necessary to specify the connection source parts, and it is possible to reduce the trouble of editing the circuit diagram.

The editing is started from the situation where the two parts ABS and SQRT as shown in FIG. 29 are already arranged in the editing area 53 on the display 102, and the parts SUB are arranged. A procedure for connecting in this way will be described.
First, the mode change button shown in FIG. 3 is used to change from the normal edit mode to the continuous connection edit mode.
Regarding the subsequent procedures, there are three types of procedures depending on the difference in the order of the parts arrangement and the connection destination terminals. The procedures D, E, and F are respectively shown in FIG. 11, FIG. 30, and FIG. Each figure consists of an upper part, a middle part, and a lower part, and represents the display state of the editing area in time series from top to bottom.

(Procedure D)
Here, a method will be described in which components that are connection sources are arranged first, and then connection destination terminals are designated in order.
First, the pointing device 104 is used to select a SUB that is a placement target component from the component button 52, and a desired position on the editing area is designated and placed. After executing the placement process, the SUB is displayed at the designated position. At that time, the arranged SUB is automatically designated as a connection source part, and the first input terminal of SUB and SUB is highlighted (upper part of FIG. 11). When placing a SUB, the process proceeds internally with steps ST51, ST52, ST53, ST4, ST5, ST7, ST8, ST3. The subsequent processing is the same as the procedure A of the first embodiment.

(Procedure E)
Here, a method will be described in which connection destination terminals are first specified in order, and then components that are connection sources are arranged.
First, the ABS output terminal is designated using the pointing device 104 as the first connection destination terminal. At this time, the designated terminal is highlighted and a number “1” indicating the designation order is displayed near the terminal (upper part of FIG. 30). When designating the output terminal of the ABS, the process proceeds internally with steps ST51, ST4, ST9, ST11, ST12, ST13, ST3.
Next, the output terminal of SQRT is designated using the pointing device 104 as the second connection destination terminal. At this time, the designated terminal is highlighted and a number “2” indicating the designation order is displayed in the vicinity of the terminal (the middle part of FIG. 30). When designating the output terminal of SQRT, the process proceeds internally with steps ST51, ST4, ST9, ST11, ST12, ST13, ST3.
In this state, the pointing device 104 is used to select the SUB that is the placement target part from the part button 52, and the desired position on the editing area is designated and placed. After executing the placement process, the SUB is displayed at the designated position. At this time, the SUB first input terminal (connection source terminal) and the ABS output terminal (connection destination terminal), and the SUB second input terminal (connection source terminal) and the SQRT output terminal (connection destination terminal) are associated with each other. Each connection is displayed. At the same time, the number indicating the designated order displayed near the connection destination terminal disappears, the highlighting of the connection destination terminal is canceled, and the output terminal of the SUB that is the connection source component and the SUB that is the next connection target is emphasized. Is displayed (lower part of FIG. 30). When placing a SUB, the process proceeds internally with steps ST51, ST52, ST53, ST4, ST5, ST7, ST8, ST14, ST15, ST16, ST3.

(Procedure F) Here, a method will be described in which a connection source component is arranged in the middle of designating a connection destination terminal, and then the connection destination component is continuously designated.
First, the ABS output terminal is designated using the pointing device 104 as the first connection destination terminal. At this time, the designated terminal is highlighted and a number “1” indicating the designation order is displayed in the vicinity of the terminal (upper part of FIG. 31). When designating the output terminal of the ABS, the process proceeds internally with steps ST51, ST4, ST9, ST11, ST12, ST13, ST3.

In this state, the pointing device 104 is used to select the SUB that is the placement target part from the part button 52, and the desired position on the editing area is designated and placed. After executing the placement process, the SUB is displayed at the designated position. At this time, the first input terminal (connection source terminal) of the SUB and the output terminal (connection destination terminal) of the ABS are associated with each other and the connection is displayed. At the same time, the number indicating the designation order displayed in the vicinity of the connection destination terminal disappears, the highlighting of the connection destination terminal is canceled, and the SUB that is the connection source component and the second input terminal of the SUB that is the next connection target Is highlighted (the middle part of FIG. 31). When placing a SUB, the process proceeds internally with steps ST51, ST52, ST53, ST4, ST5, ST7, ST8, ST14, ST15, ST16, ST3.
The SQRT output terminal is designated using the pointing device 104 as the second connection destination terminal. At this time, the second input terminal (connection source terminal) of the SUB is associated with the output terminal (connection destination terminal) of the SQRT, and the connection is displayed. At the same time, the highlighting of the second input terminal of the SUB is canceled, and the output terminal of the SUB to be connected next is highlighted (lower part of FIG. 31). When designating the output terminal of SQRT, the process proceeds internally with steps ST51, ST4, ST9, ST11, ST12, ST13, ST14, ST15, ST16, ST3.

As described above, the arrangement of desired parts and the creation of two connections can be realized with the same input effort by any of the procedures D, E, and F.
The highlighting indicating the connection source terminal may be highlighted not only on the editing area 53 but also on the component button 52.

As described above, according to the circuit diagram editing apparatus of the fifth embodiment, since the component is arranged and the component placement unit for designating the component as the connection source component is provided at the same time as the placement, the component to be placed is connected. Since it is automatically specified as the original part, the connection creation process can be executed without explicitly specifying the connection source part, and the labor of editing the circuit diagram can be further reduced.

Embodiment 6 FIG.
In the sixth embodiment, an indirect label indicating a logical connection relationship is given on a circuit diagram.
FIG. 32 is a block diagram showing a circuit diagram editing apparatus according to the sixth embodiment.
The configuration of the circuit diagram editing apparatus according to the sixth embodiment is obtained by adding a distance determination unit 10 and an indirect label insertion unit 11 to the configuration of the first embodiment. The distance determination unit 10 is a functional unit that determines whether a connection source terminal and a connection destination terminal that are associated as connection targets satisfy a predetermined condition based on a distance between these terminals. The indirect label insertion unit 11 is a functional unit that inserts an indirect label indicating a logical connection relationship on the circuit diagram when the distance determination unit 10 determines that a predetermined condition is satisfied. Since the configuration other than this is the same as that of the first embodiment, the same reference numerals are assigned to the corresponding portions, and the description thereof is omitted.

The hardware configuration for realizing the circuit diagram editing apparatus according to the sixth embodiment is the same as that shown in FIG. That is, the distance determination unit 10 and the indirect label insertion unit 11 store programs corresponding to the respective functions in the hard disk 107, read the corresponding programs by the CPU 105, expand them on the memory 106, and execute them. Function is realized.

The operation of the circuit diagram editing apparatus according to the sixth embodiment will be described below.
In the present embodiment, a method of inserting an intermediate variable that is an indirect label when the distance from the connection source terminal to the connection destination terminal is long using the distance determination unit 10 and the indirect label insertion unit 11 will be described.

The circuit diagram editing program manages a circuit diagram by a concept called a sheet. In the editing area 53, a part of the sheet is cut out and displayed on the display 102. When the sheet becomes large, editing of the circuit diagram proceeds while moving the display range on the editing area 53 using a scroll bar or the like. Become.
The connection between terminals located on the sheet is long and difficult to see, and it is necessary to scroll to confirm the correspondence between the connection source terminal and the connection destination terminal. is there. As a countermeasure against this problem, an intermediate variable is introduced as an indirect label, and a direct connection is not performed on the sheet, but a method of maintaining a logical connection relationship is used. In addition, when it is desired to connect terminals on different sheets, it is impossible to connect them, so an intermediate variable is introduced to provide a logical connection relationship between the sheets.

Conventionally, when such an intermediate variable is introduced, the intermediate variable is created and the connection between the intermediate variable and the terminal is explicitly performed, and the editing work becomes complicated. In the circuit diagram editing apparatus according to the present embodiment, when connecting between terminals on a long distance or different sheets, intermediate variables can be automatically inserted, so that the number of intermediate variable insertion operations is reduced. be able to.

● (Internal processing)
The flow of internal processing at the time of creating a connection in the present embodiment is the same processing as the flowchart of the first embodiment shown in FIG. 8 except for the processing in step ST14. The flow of the process of step ST14 in this Embodiment is shown in the flowchart of FIG.
(Step ST61) Terminal Distance Determination If the result of determination in step ST8 is that the connection destination terminal counter is 1 or more, the connection source terminal determination unit 3 determines whether the connection destination terminal counter value n and the connection source component have The number of connection terminals is compared, and the distance determination unit 10 is requested to determine the distance for the connection source terminals by the smaller value (this value is referred to as m). If the result of determination in step ST13 is that there is terminal information at the nth terminal in the connection source terminal list, the connection source terminal determination unit 3 determines the distance determination for the nth connection source terminal in the connection source terminal list. Request to the determination unit 10.

The distance determination unit 10 calculates the distance between both terminals for all requested connection source terminals from the coordinate information of the connection destination terminals corresponding to the connection source terminals. Here, the sum of the square of the difference between the X coordinate values and the square of the difference between the Y coordinate values is taken, and the square root of the value is taken as the distance. If the distance is greater than or equal to the predetermined intermediate variable insertion distance, it is determined as a long distance, and if the distance between both terminals is less than the intermediate variable insertion distance, it is determined as a short distance. When the connection source terminal and the connection destination terminal exist on different sheets, the distance determination unit 10 determines that the distance between both terminals is a long distance.
Here, the distance is calculated by the method described above, but the present invention is not limited to this method. For example, in the function block diagram, since the Y coordinate distance may be more important than the X coordinate distance, only the Y coordinate distance may be used, or a calculation method in which the Y coordinate is weighted is used. May be. In the function block diagram, a circuit group having a connection relationship may be managed in units of networks, and therefore, determination may be made on the basis of various criteria such as a long distance when the network is remote. .

(Step ST62) Intermediate Variable Insertion When the determination result in step ST61 is a long distance, the indirect label insertion unit 11 generates the same intermediate variable in the vicinity of the connection source terminal and the connection destination terminal.
(Step ST63) Connection Creation Instruction When the determination result in step ST61 is a short distance, the distance determination unit 10 requests the connection creation unit 4 to create a connection between the connection source terminal and the corresponding connection destination terminal. . When the intermediate variable is created in step ST62, the indirect label insertion unit 11 connects the connection source unit and the intermediate variable in the vicinity of the connection source terminal to the connection creation unit 4, and the connection destination terminal and the connection destination terminal. Request the creation of a connection between intermediate variables in the vicinity of.

● (Operation example)
In the present embodiment, the intermediate variable insertion distance setting prepared in the main menu 51 is set before performing the connection creation processing procedure. The intermediate variable insertion distance is a reference distance value for inserting the intermediate variable. If the distance between the connection source terminal and the connection destination terminal is equal to or greater than the intermediate variable insertion distance, the intermediate variable is inserted. If it is less than the intermediate variable insertion distance, the intermediate variable is not inserted. Since a default value (for example, 1000 pixels) is set for the intermediate variable insertion distance, it is possible to insert an intermediate variable without explicitly setting the intermediate variable insertion distance.

That is, when the distance between the connection source terminal and the connection destination terminal is less than the intermediate variable insertion distance, the connection displayed on the editing area 53 is the same as that in the first embodiment, and is equal to or longer than the intermediate variable insertion distance. In this case, an intermediate variable is inserted between both terminals, and no physical connection is made, but the logical connection relationship is maintained. The other operation procedures are the same as those in the first embodiment.

For example, in the case of FIG. 16 of the first embodiment, when the distance between the ABS input terminal and the SUB output terminal is equal to or longer than the intermediate variable insertion distance, when designating the SUB output terminal as the connection destination terminal, The intermediate variable M1 is automatically inserted, resulting in a circuit diagram of the form as shown in FIG. When the SUB output terminal is designated, the process proceeds internally with steps ST4, ST9, ST11, ST12, ST13, ST61, ST62, ST63, ST15, ST16, ST3.

In the above example, the intermediate variable M1 is displayed as an indirect label. However, any label may be used as long as it indicates a logical connection relationship.

As described above, according to the circuit diagram editing apparatus of the sixth embodiment, the distance for determining whether or not the unconnected terminal and the connected terminal of the connection source component satisfy a predetermined condition based on the distance between these terminals. When the determination unit and the distance determination unit determine that the predetermined condition is satisfied, an indirect label indicating a logical connection relationship between the terminal of the connection source component and the connection destination terminal is provided so as to be positioned in the vicinity of each terminal. Since it has an indirect label insertion part, it can automatically insert an indirect label when a predetermined condition based on the distance between the terminals is satisfied, such as a long distance or connection between terminals on different sheets. Therefore, the number of indirect label insertion work can be reduced.

Embodiment 7 FIG.
In the seventh embodiment, when the signal types of the connection destination terminal and the connection source terminal do not match, a signal type conversion component for matching them is inserted.
FIG. 35 is a block diagram showing a circuit diagram editing apparatus according to the seventh embodiment.
The configuration of the circuit diagram editing apparatus according to the present embodiment is obtained by adding a signal type determination unit 12, a signal type conversion component insertion unit 13, and a signal type conversion component storage unit 14 to the configuration of the first embodiment. The signal type determination unit 12 is a functional unit that determines the signal types of the connection destination terminal and the connection source terminal specified as the connection target. Here, the signal type indicates the characteristics of the signal input / output to / from the terminal. For example, it refers to data type information such as integer type or real number type, voltage information such as output voltage or input voltage of the terminal, etc. Yes. When the signal type determination unit 12 determines that the signal types do not match, the signal type conversion component insertion unit 13 converts the signal type of the connection destination terminal from the signal type conversion component storage unit 14 to the signal type of the connection source terminal. This is a functional unit that takes out the signal type conversion component to be converted into, and inserts it between the connection destination terminal and the connection source terminal. The signal type conversion component storage unit 14 is a storage unit that stores signal type conversion components for converting various signal types. Since the configuration other than this is the same as that of the first embodiment, the same reference numerals are assigned to the corresponding portions, and the description thereof is omitted.

The hardware configuration for realizing the circuit diagram editing apparatus according to the seventh embodiment is the same as the configuration shown in FIG. That is, the signal type determination unit 12 and the signal type conversion component insertion unit 13 store programs corresponding to the respective functions in the hard disk 107, read the corresponding programs by the CPU 105, expand them on the memory 106, and execute them. Each function is realized. The signal type conversion component storage unit 14 is formed on the hard disk 107 or the memory 106.

Hereinafter, the operation of the seventh embodiment will be described.
In the present embodiment, when the signal type of the connection source terminal and the connection destination terminal do not match using the signal type determination unit 12, the signal type conversion component insertion unit 13, and the signal type conversion component storage unit 14, A method for inserting the signal type conversion component will be described.
In a circuit diagram editing program that uses a function block diagram for creating a PLC program, each terminal has type information as a signal type. The type information here is a data type of a value that becomes an input to the terminal or an output from the terminal, and includes an integer type, a real number type, a Boolean type, and the like. In the circuit diagram editing apparatus, if wiring between terminals whose types do not match is made, a compilation error occurs when creating a program for the PLC, and it cannot be executed on the PLC. Therefore, when connecting terminals that do not match the type, place a type conversion component between the two terminals as a signal type conversion component, and output terminal, input terminal of type conversion component, output terminal of type conversion component By connecting the input terminals to each other, the circuit diagram that can be executed on the PLC is eliminated by eliminating the mismatch of the types of both terminals.

Conventionally, when such a type conversion component is introduced, the arrangement of the type conversion component and the connection between the type conversion component and both terminals are explicitly performed, and the editing work becomes complicated. In the circuit diagram editing apparatus according to the present embodiment, when connecting terminals that do not match the type, the type conversion component can be automatically inserted, thereby reducing the number of mold conversion component insertion operations. Can be made.

● (Internal processing)
The flow of internal processing at the time of creating a connection in the present embodiment is the same processing as the flowchart of FIG. 8 except for the processing in step ST14. A detailed flow of the process of step ST14 in the present embodiment is shown in the flowchart shown in FIG.
(Step ST71) Terminal type determination As a result of the determination in step ST8, if the connection destination terminal counter is 1 or more, the connection source terminal determination unit 3 determines that the connection destination terminal counter value n and the connection source component have no connection. The number of terminals is compared, and the signal type determination unit 12 is requested to determine the type of the connection source terminal by the smaller value (this value is referred to as m). If the result of determination in step ST13 is that there is terminal information in the nth connection source terminal list, the connection source terminal determination unit 3 signals the type determination for the nth connection source terminal in the connection source terminal list. A request is made to the type determination unit 12.
The signal type determination unit 12 acquires the type information of the connection destination terminal corresponding to the connection source terminal for all requested connection source terminals, and determines that both terminals match if the types of both terminals are connectable. If the type of is not connectable, it is determined as a mismatch.

(Step ST72) Mold Conversion Component Insertion If the determination result in step ST71 does not match, the signal type conversion component insertion unit 13 selects the input type from the signal type conversion component storage unit 14 prepared in advance. A search is performed using the output type as a condition, a type conversion component necessary for type conversion between both terminals is determined, and the determined type conversion component is arranged between the connection source terminal and the connection destination terminal. If there is no corresponding type conversion component in the signal type conversion component storage unit 14, the type conversion component is not arranged.

(Step ST73) Connection Creation Instruction When the determination results in step ST71 match, the signal type determination unit 12 requests the connection creation unit 4 to create a connection between the connection source terminal and the corresponding connection destination terminal. . When the type conversion component is created in step 72, the signal type conversion component insertion unit 13 connects the connection source terminal and the connection source terminal side terminal of the type conversion component to the connection creation unit 4 and the connection destination. Request to create a connection on the terminal side of the terminal and type conversion part. In addition, when there is no corresponding type conversion component in step ST72 and no type conversion component is created, the signal type conversion component insertion unit 13 sends a connection source terminal and a corresponding connection destination terminal to the connection creation unit 4. Request to create a connection between them.

● (Operation example)
The basic operation procedure in the present embodiment is the same as that in the first embodiment.
In the same operation procedure as in the first embodiment, when the type information of the connection source terminal and the connection destination terminal match, the connection displayed on the editing area 53 is the same as in the first embodiment. When there is a mismatch in the type information, a type conversion component is inserted between both terminals. Thus, a circuit diagram that can be executed on the PLC by compiling is obtained.
Further, when there is no type conversion component for eliminating the mismatch of the type information between the connection source terminal and the connection destination terminal, the connection source terminal and the connection destination terminal are directly connected in the same manner as in the first embodiment.

Here, the operation will be described using the state of the editing area 53 shown in FIG. 37 as an example.
In the upper part of FIG. 37, an INT type (integer type) variable A is set for the ABS input. The ABS outputs an absolute value, and the type of the output terminal is the same as the type of the input terminal. Therefore, the type of the output terminal of the ABS here is the INT type. SQRT outputs the square root of an input value, and the type of the output terminal is a REAL type (real number type) regardless of the type of the input terminal. Further, the output terminal of SQRT and the second input terminal of SUB are connected. In this connection, it is assumed that a connection is created by designating a connection source terminal and a connection destination terminal by a conventional connection creation method.

Since the REAL type SQRT output terminal is connected to the second input terminal of the SUB, the SUB is a circuit component for subtracting a real number at this stage, and all the terminals of the SUB are REAL type. It has become. The upper part of FIG. 37 shows a state in which parts having terminal types are arranged and connected in this way, and SUB is designated as a connection source part.
From here, when the ABS output terminal is designated as the connection destination terminal, the first input terminal of the SUB that is the connection source terminal is REAL type, and the output terminal of the ABS that is the connection destination terminal is INT type. Child types do not match. In the present embodiment, as shown in the lower part of FIG. 37, a mold conversion component for eliminating mold mismatch can be automatically inserted at the time of connection. Here, an INT_TO_REAL component that converts an INT type input into a REAL type and outputs it is inserted. When designating the output terminal of the ABS, the process proceeds internally with steps ST4, ST9, ST11, ST12, ST13, ST71, ST72, ST73, ST15, ST16, ST3.

As described above, according to the circuit diagram editing apparatus of the seventh embodiment, the signal type determination unit that determines the signal type of the connection destination terminal specified as the connection target and the unconnected terminal of the connection source component, and the signal type determination Signal that converts the signal type of the connection destination terminal to the signal type of the unconnected terminal between the connection destination terminal and the unconnected terminal. Since it has a signal type conversion component insertion unit that inserts a type conversion component, when performing connection between terminals that do not match the signal type, it is possible to automatically insert the signal type conversion component, The number of operations for inserting the signal type conversion component can be reduced.

As described above, the circuit diagram editing apparatus and the circuit diagram editing program according to the present invention relate to a configuration that enables connection between terminals on a circuit diagram to be created with a small number of inputs, and a circuit for a PLC. It is suitable for use in a circuit diagram editing apparatus for editing a diagram.

Claims

A connection source part designating part for specifying a connection source part;
A connection destination terminal designating unit for designating a connection destination terminal;
When connecting from the unconnected terminal of the connection source component to the connection destination terminal, the predetermined order of the connection destination terminal by the connection destination terminal specifying unit and the predetermined terminal in the unconnection terminal of the connection source component Based on the order, a connection source terminal determination unit that associates an unconnected terminal of the connection source component to be connected with the connection destination terminal,
A circuit diagram editing apparatus, comprising: a connection creation unit that connects between the unconnected terminal and the connection destination terminal associated by the connection source terminal determination unit.
When a wiring source part is specified, the wiring source part includes a terminal order determination unit that determines the terminal order of unconnected terminals of the wiring source part according to a predetermined terminal order determination rule. The circuit diagram editing apparatus according to claim 1, wherein when the terminal order is determined by the order determination unit, the unconnected terminal of the connection source component and the connection destination terminal are associated in the terminal order.
2. The circuit diagram according to claim 1, wherein the designation of the connection source component by the connection source component designation unit is performed before, after or during the designation of the connection destination terminal by the connection destination terminal designation unit. Editing device.
2. The circuit diagram editing apparatus according to claim 1, further comprising: a part placement unit that places the part and designates the part as a connection source part simultaneously with the placement.
A distance determination unit that determines whether the unconnected terminal and the connection destination terminal of the connection source component satisfy a predetermined condition based on a distance between these terminals,
Indirect label insertion that provides an indirect label indicating a logical connection relationship between the unconnected terminal and the connection destination terminal so as to be positioned in the vicinity of each terminal when the distance determination unit determines that a predetermined condition is satisfied The circuit diagram editing apparatus according to claim 1, further comprising: a section.
A signal type determination unit that determines a signal type of a connection destination terminal specified as a connection target and an unconnected terminal of the connection source component;
When the signal type determination unit determines that the signal types of the connection destination terminal and the unconnected terminal do not match, the signal type of the connection destination terminal is set between the connection destination terminal and the unconnected terminal. 2. The circuit diagram editing apparatus according to claim 1, further comprising: a signal type conversion component insertion unit that inserts a signal type conversion component for converting into a signal type of a terminal.
When the computer that edits the circuit diagram is connected from the unconnected terminal of the connection source part to the specified connection destination terminal, the specified order of the connection destination terminal and the unconnected terminal of the connection source part in advance Based on the determined terminal order, a connection source terminal determination unit for associating an unconnection terminal of the connection source component to be connected with the connection destination terminal, and the connection source terminal determination unit that is associated with the connection source terminal determination unit A circuit diagram editing program that functions as a connection creation unit that connects between a connection terminal and the connection destination terminal.