JP5458972B2 - Information communication system and program - Google Patents

Description

  The present invention relates to an information communication system and a program.

  In Patent Document 1, the amount of electric power used by household electrical appliances in the home is measured by a slave unit connected to each household electrical appliance and set with a common house code, and the house low-voltage distribution line including the house code is included. In a load survey system that superimposes a carrier wave on the base station and transmits measurement data to the base unit, at the time of setting a house code, a power supply unit for setting that feeds power to the base unit and the low-voltage distribution line in the house via a blocking filter; There is disclosed a load survey system comprising house code setting means for setting a house code in a slave connected to a low-voltage distribution line in a house.

  Patent Document 2 discloses a power line communication system including a first power line communication device and a second power line communication device, wherein the first power line communication device receives a supply of power from a power line. A power storage unit, a first storage unit that stores network data for connection to a communication network that uses the power line, a first detection unit that detects an output request for the network data, and a response to the output request. A first control unit that prohibits the network data from being output from the power supply unit to the outside of the first power line communication device; and the network data in response to an operation by the first control unit. The second power line communication device detects a network data acquisition request and a second power supply unit that receives power from the power line. A second control unit that prohibits data from being output from the second power supply unit to the outside of the second power line communication device in response to detection of the acquisition request; and Based on the fact that the output is prohibited by the second control unit, an acquisition unit that acquires the network data from the outside of the power line communication device, and a second that stores the network data acquired by the acquisition unit A power line communication system including a storage unit and a communication unit that communicates with the communication network based on the network data is disclosed.

  Patent Document 3 discloses a plurality of lighting devices connected to a commercial power source serving as a power line, a load device such as an air conditioner, a power line carrier terminal device for a load device, or an operation thereof. System setting of a power line carrier terminal such as a power line carrier terminal operating device on the side and including a power line carrier communication unit capable of setting attributes such as an address for identifying at least each power line carrier terminal itself In the method, the power line carrying terminal system setting is characterized in that an infrared communication unit is provided in the power line carrying terminal, and attribute information that is an attribute setting of each power line carrying terminal is written through the infrared communication unit. A method is disclosed.

  Further, Patent Document 4 discloses a bus type serial communication system in which first to Nth slave nodes are connected in this order to a control master node via a main serial bus for serial data transmission / reception. A method of setting an address in the first to Nth slave nodes, wherein the main serial bus is separated by first to (N-1) th node control circuits, and the first to Nth slave nodes are respectively set. The first to Nth main serial buses to which N slave nodes are connected, and the address setting method includes the first to Nth slaves by initially turning on the bus serial communication system. A power-on-reset of the node and the first to (N-1) th node control circuits, and the first slave node and the first node Only the control circuit is electrically connected to the control master node via the first main serial bus, and the control master node is connected to the first to Nth slave nodes. The Nth address information is sequentially sent onto the first main serial bus, whereby the first to (N-1) th node control circuits are respectively connected to the first to the first. When the address information of (N-1) is received, each input and output are electrically connected, and the second to Nth slave nodes are sequentially connected to the control master node. At the same time, the first to Nth slave nodes set the first received address information as their own addresses after the power-on reset, thereby setting the first to Nth slave nodes. The slave node, respectively, the address setting method in which the address information of the first through the N-th is characterized in that it comprises the steps set as its own address is disclosed.

JP-A-8-223092 JP 2008-244558 A JP 2002-171205 A Japanese Patent Laid-Open No. 5-292298

  An object of this invention is to provide the information communication system and program which can obtain the specific information which specifies a some subunit | mobile_unit simply and at low cost.

In order to achieve the above object, an information communication system according to claim 1, wherein a power source, a plurality of slave units each connected to a driving object to be driven by being supplied with power generated by the power source, A common information communication line for serially communicating predetermined information with each of the plurality of slave units interposed between a power source and the plurality of slave units, and the power for each slave unit A master unit connected to the plurality of slave units by an individual power supply line for supplying a plurality of slave units via the power supply line to each of the plurality of slave units Requesting means for individually requesting transmission of specific information for specifying the slave unit connected to the power supply line by supplying the power, and from the slave unit in response to a request by the request unit Receiving means for receiving the transmitted specific information; Storage means for storing the specific information received by the receiving means, wherein the plurality of slave units supply the power supplied via the master unit to the driving object and the parent unit. In accordance with a request from the machine by the requesting means, there is provided transmission means for transmitting the specific information to the parent machine via the information communication line.

In order to achieve the above object, the information communication system according to claim 2 includes a power source and a plurality of slave units to which driving objects to be driven by being supplied with electric power generated by the power source are respectively connected. And a common information communication line for serially communicating predetermined information between each of the plurality of slave units and each slave unit interposed between the power source and the plurality of slave units A master unit connected to the plurality of slave units by an individual power supply line for supplying the power, and the master unit provides the power supply line to each of the plurality of slave units. The power for supplying the power via, and transmitting request information for requesting transmission of the specific information for specifying the slave, thereby specifying the slave connected to the power supply line Request means for individually requesting transmission of specific information, and before A receiving unit that receives the specific information transmitted from the slave unit in response to a request from the request unit; and a storage unit that stores the specific information received by the receiving unit. Supplying the power supplied via the master unit to the driving object, and sending the specific information to the master unit via the information communication line in response to a request from the master unit by the request means. Transmitting means for transmitting is provided .

On the other hand, in order to achieve the above object, a program according to claim 3 is provided between a power source and a plurality of slave units to which driving objects driven by the power generated by the power source are connected. A common information communication line for serially communicating predetermined information with each of the plurality of slave units and an individual power supply line for supplying the power to each slave unit. a program executed by the connected master unit to said plurality of slave machine, the computer, for each of said plurality of slave unit, by supplying electric power through the power supply line, the power supply Request means for individually requesting transmission of specific information for specifying the slave unit connected to the line, and receiving means for receiving the specific information transmitted from the slave unit in response to a request by the request unit And said Storage means for storing the specific information received by the signal means, is intended to function as a.
In order to achieve the above object, a program according to claim 4 is provided between a power source and a plurality of slave units to which driving objects to be driven supplied with power generated by the power source are connected. A common information communication line for serially communicating predetermined information with each of the plurality of slave units and an individual power supply line for supplying the power to each slave unit. A program executed by a parent device connected to the plurality of child devices, the computer supplying the power to each of the plurality of child devices via the power supply line, and the child device Request means for individually requesting transmission of the specific information for specifying the slave unit connected to the power supply line by transmitting request information for requesting transmission of specific information for specifying, Said request means Receiving means for receiving the specifying information transmitted from the handset in response to by the request, is intended to function as a storage means for storing the specific information received by said receiving means.

According to the first to fourth aspects of the invention, it is possible to obtain the effect that specific information for specifying a plurality of slave units can be obtained simply and at low cost.

In addition, according to the first and third aspects of the invention, it is possible to obtain specific information more easily than when request information requesting transmission of specific information is used. .

Furthermore, according to the invention described in claim 2 and claim 4 , it is possible to obtain the effect that the specific information can be obtained more reliably as compared with the case where the request information is not used.

1 is a block diagram illustrating an example of an overall configuration of an image forming apparatus according to an embodiment. It is a block diagram which shows an example of a structure of the master part which concerns on embodiment, and a slave part. It is a circuit diagram which shows the structural example of CR type | mold oscillation circuit which concerns on embodiment. It is a schematic diagram which shows an example of the data structure of the control object management information which concerns on embodiment. It is a flowchart which shows the flow of a process of the initial stage information acquisition process program which concerns on embodiment. It is a schematic diagram which shows an example of the data structure of the slave management information which concerns on embodiment. It is a flowchart which shows the flow of the power-on process which concerns on embodiment. It is a time chart which shows transition of the principal part signal at the time of performing the initial stage information acquisition processing program concerning an embodiment. It is a flowchart which shows the flow of a process of the normal operation process program which concerns on embodiment. It is a time chart which shows transition of the principal part signal at the time of running the normal operation processing program concerning an embodiment. It is a time chart which shows the other example of the trigger signal which concerns on embodiment.

  DESCRIPTION OF EMBODIMENTS Hereinafter, embodiments for carrying out the present invention will be described in detail with reference to the drawings. Here, a case where the present invention is applied to an image forming apparatus will be described.

  First, the configuration of the image forming apparatus 10 according to the present embodiment will be described with reference to FIG.

  As shown in the figure, the image forming apparatus 10 according to the present embodiment is preliminarily configured with respect to an MCU (Main Control Unit) 20 that controls the overall operation of the image forming apparatus 10 and image information indicating an image to be formed. An image processing unit 50 that performs predetermined image processing. The MCU 20 and the image processing unit 50 are electrically connected, and the MCU 20 uses the image processing unit 50 to perform the image processing on the image information.

  In addition, the image forming apparatus 10 according to the present embodiment includes a power source 60 that generates power to be supplied to each unit driven by power. The power source 60 is connected to the MCU 20 and the image processing unit 50, and the MCU 20 and the image processing unit 50 are driven by the power supplied from the power source 60.

  Further, the image forming apparatus 10 includes a plurality of devices that are electrically connected to a control target device provided in an image forming engine unit (not shown), supply driving power to the control target device, and control its operation. In this embodiment, three slave units 30A, 30B, and 30C are provided. The control target device includes a motor that rotates to convey a sheet on which an image is formed, a heater that is heated to fix a color material indicating an image formed on the sheet, and the sheet Examples include a sensor for detecting the transport position.

  On the other hand, the MCU 20 includes an oscillation circuit 22 that generates a clock signal (hereinafter referred to as a “system clock signal”) that serves as a reference for the timing of the overall operation of the image forming apparatus 10.

  Further, the MCU 20 includes a master unit 24 corresponding to each of the slave units 30A to 30C. The master unit 24 and each of the slave units 30A to 30C are electrically connected by an information communication line DL for transmitting and receiving various types of information. Connected. As shown in FIG. 1, in the image forming apparatus 10 according to the present embodiment, a pair line composed of two lines is applied as the information communication line DL, and the master unit 24 and the slave units 30A to 30C. The transmission / reception of various information is performed by serial communication (serial communication) using a differential signal. Here, in the image forming apparatus 10 according to the present embodiment, the information communication line DL extends from the master unit 24, branches near the slave units 30A to 30C, and is connected to the slave units 30A to 30C. ing.

  Further, the MCU 20 is provided with a power supply unit 26 that supplies driving power to each of the slave units 30A to 30C. The power supply unit 26 and each of the slave units 30A to 30C are each connected in parallel to a power supply line. It is electrically connected by PL. Therefore, the power supply unit 26 individually supplies driving power to each of the slave units 30A to 30C. Each output terminal that outputs power from the power supply unit 26 is associated with an individual predetermined port number (hereinafter referred to as “power supply port number”).

  An oscillation circuit 22 and a power supply unit 26 are connected to the master unit 24, and the master unit 24 operates in synchronization with the system clock signal generated by the oscillation circuit 22 and controls the operation of the power supply unit 26. . Here, when outputting power from the power supply unit 26, the master unit 24 designates a power supply port number corresponding to an output terminal that outputs power.

  In addition to the configuration shown in FIG. 1, the image forming apparatus 10 includes a configuration for acquiring the image information, a configuration for conveying paper, a configuration for forming an image on a paper, and an image. Many configurations such as a configuration for discharging the formed paper to the outside of the image forming apparatus 10 are provided. However, in order to avoid complications, description of these configurations is omitted.

  FIG. 2 shows the configuration of the master unit 24 and the slave units 30A to 30C according to the present embodiment.

  As shown in the figure, the master unit 24 according to the present embodiment includes a CPU (central processing unit) 24a and a storage unit 24b. The CPU 24a and the storage unit 24b are electrically connected, and the CPU 24a accesses the storage unit 24b.

  On the other hand, as shown in the figure, the slave units 30A to 30C according to the present embodiment include a power-on processing unit 30a, an oscillation circuit 30b, and a storage unit 30c.

  The power-on processing unit 30a according to the present embodiment includes a logic circuit that performs a predetermined power-on process when driving power is supplied from the outside.

  In the image forming apparatus 10 according to the present embodiment, as the power-on process, when power superimposed with a predetermined trigger signal is supplied from the power supply unit 26 via the power supply line PL, A process is applied in which address information to be described later is read from the storage unit 30c and transmitted to the master unit 24 via the information communication line DL.

  Further, the oscillation circuit 30b according to the present embodiment generates a clock signal (hereinafter referred to as “slave clock signal”) that serves as a reference for the operation timing of the slave units 30A to 30C. As the oscillation circuit 30b, a crystal oscillator, a CR type oscillation circuit, or the like is used. From the viewpoint of cost, it is preferable to use a CR type oscillation circuit having a feedback circuit as shown in FIG.

  Furthermore, the slave units 30A to 30C according to the present embodiment are pre-assigned addresses for identifying themselves (in this embodiment, MAC (Media Access Control) addresses), and the storage unit 30c has Address information indicating the address is stored in advance.

  An oscillation circuit 30b and a storage unit 30c are connected to the power-on processing unit 30a. The power-on processing unit 30a operates in synchronization with the slave clock signal generated by the oscillation circuit 30b and accesses the storage unit 30c. Do.

  In the image forming apparatus 10 according to the present embodiment, a flash memory is used as the storage unit 24b and the storage unit 30c. However, the present invention is not limited to this, and other semiconductor storage elements, hard disk devices, and the like are fixed. A portable storage device such as an SD type storage device or an SD card may be applied.

  Incidentally, in the image forming apparatus 10 according to the present embodiment, control target management information indicating the control target device connected to each of the slave units 30A to 30C is stored in advance in the storage unit 24b in the master unit 24.

  As shown in FIG. 4, in the control target management information according to the present embodiment, the above-described power supply port number and the slave units 30 </ b> A to 30 </ b> C connected to the output terminal of the power supply unit 26 corresponding to the power supply port number. Identification information for identifying a control target device connected to any one of them is stored in association with each other. In the example shown in the figure, for example, the control target devices connected to the slave unit connected to the output terminal of the power supply unit 26 corresponding to the power supply port number P1 are four motors 1 to 4. Information.

  Various processes performed by the master unit 24 and the slave units 30A to 30C of the image forming apparatus 10 configured as described above may be realized by a software configuration using a computer by executing a program. However, it is not limited to realization by software configuration, and it goes without saying that it may be realized by hardware configuration or a combination of hardware configuration and software configuration.

  Below, the case where the master part 24 which concerns on this Embodiment implement | achieves various processes by executing the said program is demonstrated. In this case, a form in which the program is installed in the image forming apparatus 10 in advance, a form provided in a state stored in a computer-readable recording medium, a form distributed via wired or wireless communication means, and the like May be applied.

  Next, the operation of the image forming apparatus 10 according to the present embodiment will be described.

  First, with reference to FIG. 5, an operation when the master unit 24 executes an initial information acquisition process for acquiring information on the slave units 30A to 30C will be described. FIG. 5 is a flowchart showing the flow of processing of the initial information acquisition processing program executed by the CPU 24a of the master unit 24 at this time, and the program is stored in advance in the storage unit 24b.

  First, in step 100 of the figure, power is supplied to any one of the slave units 30A to 30C via the power supply line PL so as to start supplying (feeding) the power on which the above-described trigger signal is superimposed. The supply unit 26 is controlled. In response to this, in any one slave unit to which power is supplied, the power-on processing unit 30a performs the power-on process described above, and the address information is transmitted via the information communication line DL.

  Therefore, in the next step 102, reception of the address information is waited, and in the next step 104, the power supply unit 26 is controlled so as to stop the power supply started by the processing of step 100, and the next step 106 is performed. Then, the received address information is stored in the storage unit 24b in association with the power supply port number corresponding to the power supply destination slave unit.

  In the next step 108, it is determined whether or not the above processing has been completed for all the slave units. If a negative determination is made, the process returns to step 100. The acquisition processing program is terminated.

  FIG. 6 schematically shows an example of information (hereinafter referred to as “slave management information”) stored in the storage unit 24b by the above initial information acquisition processing program. As shown in the figure, in the image forming apparatus 10 according to the present embodiment, as the slave management information, the power supply port number and the address information are stored in the storage unit 24b in association with each slave unit.

  Next, the operation of the slave units 30A to 30C when the supply of power from the power supply unit 26 is started will be described with reference to FIG. FIG. 7 is a flowchart showing the flow of power-on processing executed by the power-on processing unit 30a of the slave units 30A to 30C at this time. This power-on processing is a logic circuit included in the power-on processing unit 30a. It is executed by.

  First, in step 200 of the figure, it is determined whether or not the above-described trigger signal is superimposed on the power supplied from the power supply unit 26. If the determination is negative, no processing is performed. On the other hand, when the power-on process is completed, if the determination is affirmative, the process proceeds to step 202.

  In step 202, the address information is read from the storage unit 30c, and in the next step 204, the read address information is transmitted to the master unit 24 via the information communication line DL, and then the power-on process is terminated.

  FIG. 8 shows an example of a signal state in the main part when the above initial information acquisition processing program and power-on processing are executed.

  As shown in the figure, at this time, the master unit 24 starts supplying power to any of the slave units via the power supply line PL in which the trigger signal is superimposed in synchronization with the system clock signal. In response to this, the slave unit that has received the trigger signal transmits address information to the master unit 24 via the information communication line DL. The above operation is executed for all of the slave units 30A to 30C.

  Next, with reference to FIG. 9, an operation when the operation of the control target device connected to each of the slave units 30 </ b> A to 30 </ b> C is controlled by the master unit 24 at the time of normal image formation by the image forming apparatus 10 will be described. To do. FIG. 9 is a flowchart showing the flow of processing of a normal operation processing program executed by the CPU 24a of the master unit 24 at this time, and the program is also stored in the storage unit 24b in advance.

  In step 300 in the figure, control target management information (see also FIG. 4) and slave management information (see also FIG. 6) are read from the storage unit 24b, and in the next step 302, the read control target management information and The address information and identification information of the same power port number in the slave management information are associated with each other. As a result, the slave unit to which the control target device to be actually controlled is connected can be designated by the address information.

  Therefore, in the next step 304 and step 306, the polling for each of the slaves 30A to 30C is repeatedly executed in the order in accordance with the predetermined control procedure, and when all the control procedures are completed, this normal operation processing is performed. Exit the program.

  When performing the polling, the CPU 24a transmits polling information including address information corresponding to the slave unit to which the control target device to be controlled is connected via the information communication line DL. When the slave unit that has received the polling information matches the address information stored in its own storage unit 30c, the slave unit controls the control unit according to the instruction included in the polling information. The device is controlled, and requested information is transmitted to the master unit 24 via the information communication line DL.

  FIG. 10 shows an example of a signal state in the main part when the above normal operation processing program is executed. In the figure, for the sake of convenience, the first polling slave unit is represented as slave 1, the second polling slave unit is represented as slave 2, and the third polling slave unit is represented as slave 3. Yes.

  As shown in the figure, in this case, the slave unit to which the control target device to be controlled is connected from the master unit 24 to each of the slave units 30A to 30C in the order indicated by the predetermined control procedure. Is transmitted via the information communication line DL, and the address information included in the polling information received in response to this is the slave whose address information matches the address information stored in its own storage unit 30c. The unit controls the device to be controlled according to the instruction included in the polling information, or transmits the requested information to the master unit 24 via the information communication line DL. The above operation is executed until the control procedure is completed.

  As mentioned above, although this invention was demonstrated using embodiment, the technical scope of this invention is not limited to the range as described in the said embodiment. Various modifications or improvements can be added to the above-described embodiment without departing from the gist of the invention, and embodiments to which such modifications or improvements are added are also included in the technical scope of the present invention.

  The above embodiments do not limit the invention according to the claims (claims), and all the combinations of features described in the embodiments are essential for the solution means of the invention. Is not limited. The embodiments described above include inventions at various stages, and various inventions are extracted by combining a plurality of disclosed constituent elements. Even if some constituent requirements are deleted from all the constituent requirements shown in the embodiment, as long as an effect is obtained, a configuration from which these some constituent requirements are deleted can be extracted as an invention.

  For example, in the above embodiment, the case where the trigger signal is superimposed on the intermediate part of the power supplied to the slave part so as to decrease the voltage value has been described, but the present invention is not limited to this. For example, as shown in FIG. 11 as an example, it may be superposed so that the voltage value is increased with respect to the intermediate portion of the power, and the supply of power is temporarily stopped and the power is stopped. The trigger signal may be transmitted within a certain period.

  Moreover, although the said embodiment demonstrated the case where address information was transmitted to the master part 24 when the trigger signal was received via the power supply line PL by the slave parts 30A-30C, this invention does this. For example, the address information may be transmitted to the master unit 24 by using the drive power supplied from the power supply line PL as a trigger.

  In the above embodiment, the master unit 24 holds the control target management information in advance, while acquiring the slave management information by executing the initial information acquisition processing program, the control target management information and the slave management information. By using this, it is possible to specify in the address information the slave unit to which the device to be controlled that is actually controlled is connected, but the present invention is not limited to this, For example, the address information in the slave management information acquired by the initial information acquisition processing program is used to query each of the slave units 30A to 30C for identification information for identifying the control target device connected to itself. The identification information obtained from each of the slave units 30A to 30C is used for the inquiry. Was by associating the address information may be a form that so it is possible to specify in fact controlled controlled device to be is connected slave unit address information. In this case, it is not necessary to hold the control target management information, and it is not necessary to store the power port number in the slave management information.

  In the above embodiment, the case where the power-on process is executed by the power-on processing unit 30a configured by hardware has been described. However, the present invention is not limited to this, and for example, the power-on process is performed. The form may be executed by software. In this case, a CPU is provided for each of the slave units 30A to 30C, and a program for executing the same process as the power-on process is executed by the CPU.

  In the above embodiment, the case where a pair of two lines is applied as the information communication line DL has been described. However, the present invention is not limited to this. For example, one line is applied. It is good also as a form to do.

  Further, although cases have been described with the above embodiment where the present invention is applied to an image forming apparatus, the present invention is not limited to this. For example, an image reading apparatus, a communication apparatus, a personal computer, etc. It is good also as a form applied to the apparatus which has the main | base station and the subunit | mobile_unit.

  In addition, the configuration (see FIGS. 1 and 2) of the image forming apparatus 10, the master unit 24, and the slave units 30A to 30C described in the above embodiment is merely an example, and is not necessary within the scope of the present invention. Needless to say, it is possible to delete a new part or add a new part.

  Furthermore, the flow of various processes described in the above embodiment (see FIGS. 5 and 7) is also an example, and unnecessary steps are deleted or new steps are added without departing from the gist of the present invention. Needless to say, the processing order may be changed.

10 Image forming apparatus 20 MCU
22 Oscillation circuit 24 Master unit 24a CPU
24b storage unit 26 power supply unit 30A to 30C slave unit 30a power-on processing unit 30b oscillation circuit 30c storage unit 50 image processing unit 60 power supply DL information communication line PL power supply line

Claims (4)

A plurality of slave units each connected to a power source and a driving object to be driven by being supplied with the power generated by the power source; and the plurality of slave units interposed between the power source and the plurality of slave units Are connected to the plurality of slave units by a common information communication line for serially communicating predetermined information with each of the plurality of slave units and an individual power supply line for supplying the power to each slave unit. A master unit, and
The master unit supplies specific power for identifying the slave unit connected to the power supply line by supplying the power to the plurality of slave units via the power supply line. Request means for individually requesting transmission, receiving means for receiving the specific information transmitted from the slave unit in response to a request by the request means, and storage means for storing the specific information received by the receiving means And comprising
The plurality of slave units supply the power supplied via the master unit to the driving object and the specific information to the master unit in response to a request by the request unit from the master unit. An information communication system comprising transmission means for transmitting via an information communication line. A plurality of slave units each connected to a power source and a driving object to be driven by being supplied with the power generated by the power source; and the plurality of slave units interposed between the power source and the plurality of slave units Are connected to the plurality of slave units by a common information communication line for serially communicating predetermined information with each of the plurality of slave units and an individual power supply line for supplying the power to each slave unit. A master unit, and
The master unit supplies the power to each of the plurality of slave units via the power supply line, and transmits request information requesting transmission of specific information for identifying the slave unit. accordingly, a request means for requesting individual transmission of the specific information for specifying the sub-units connected to the power supply line, the transmitted particular from the slave unit in response to a request by said request means Receiving means for receiving information, and storage means for storing the specific information received by the receiving means,
The plurality of slave units supply the power supplied via the master unit to the driving object and the specific information to the master unit in response to a request by the request unit from the master unit. An information communication system comprising transmission means for transmitting via an information communication line. Predetermined information between each of the plurality of slave units that are interposed between the power source and the plurality of slave units to which the driving target driven by the power generated by the power source is supplied A program that is executed by a master unit connected to the plurality of slave units via a common information communication line for serial communication and an individual power supply line for supplying the power to each slave unit,
Computer
Each of the plurality of slave units is individually requested to transmit specific information for identifying the slave unit connected to the power supply line by supplying the power via the power supply line. Requesting means, and
Receiving means for receiving the specific information transmitted from the slave unit in response to a request by the request means;
Storage means for storing the specific information received by the receiving means;
Program to function as. Predetermined information between each of the plurality of slave units that are interposed between the power source and the plurality of slave units to which the driving target driven by the power generated by the power source is supplied A program that is executed by a master unit connected to the plurality of slave units via a common information communication line for serial communication and an individual power supply line for supplying the power to each slave unit,
Computer
Supplying the power to each of the plurality of slave units via the power supply line and transmitting request information requesting transmission of specific information for specifying the slave unit, thereby supplying the power and request means for requesting individual transmission of the specific information for specifying the sub-units connected to the line,
Receiving means for receiving the specific information transmitted from the slave unit in response to a request by the request means;
Storage means for storing the specific information received by the receiving means;
Program to function as.

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