JP2018091733A - Electric apparatus system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an electric apparatus system with which it is possible for a wiring mistake of an electric apparatus to a controller to be automatically restored.SOLUTION: In the electric apparatus system, a controller 3 includes a connection terminal T to which each of electric apparatuses A is individually connected via a digital signal line D. Each electric apparatus A transmits data that includes an identification signal corresponding to the identification information that is set to itself. A correspondence table 30 of the controller 3 consists of connection terminals T and information relating to the identification signal to be inputted to each of the connection terminals T which are correlated to each other in advance. When the identification information obtained from the data inputted to any one of the connection terminals T does not match the information correlated to the connection terminal T in the correspondence table 30, an alteration unit 34 alters the predetermined correspondence so that information corresponding to the unmatched identification information and the connection terminal T to which the identification information is inputted correspond to each other.SELECTED DRAWING: Figure 1

Description

  The present invention relates to an electric device system including a plurality of electric devices, and more particularly to a device including a plurality of electric devices of the same type.

  Conventionally, in an electric device system (for example, see Patent Document 1) in which a plurality of electric devices (for example, a power supply device and the like) and a control device that controls them are unitized, each of the electric devices is connected to a digital signal. It was common to connect individually to the control device via a line. In such an electrical equipment system, the control device has a plurality of connection terminals to which digital signal lines are connected.

JP2015-133345A

  In recent years, in an electrical device system, identification information used for identification with other electrical devices may be set in each of the plurality of electrical devices in order to individually control the plurality of electrical devices. It is getting more. When a plurality of electrical devices are individually controlled via a digital signal line, each of the connection terminals of the control device is connected to an electrical device in which identification information corresponding thereto is set using the digital signal line. The user is required to connect.

  However, an electrical device different from the corresponding electrical device may be erroneously connected to any of the connection terminals. If such a wiring mistake occurs, the electric device cannot be correctly controlled, and it may be difficult to operate the electric device system normally.

  SUMMARY OF THE INVENTION An object of the present invention is to provide an electrical device system that can automatically repair a wiring error of an electrical device with respect to a control device.

  An electrical device system according to the present invention includes a plurality of electrical devices and a control device that controls the plurality of electrical devices via a digital signal line. The control device has a plurality of connection terminals to which each of the plurality of electric devices is individually connected via a digital signal line. Each of the plurality of electrical devices is set with identification information used for identification with other electrical devices, and each electrical device receives data including an identification signal corresponding to the identification information set for itself. It is possible to send. The control device includes a correspondence table, a transmission command unit, a determination unit, and a change unit. In the correspondence table, a plurality of connection terminals and information on identification signals to be input to the connection terminals are associated with each other in advance. The transmission command unit causes each of the plurality of electric devices to transmit data including an identification signal. The determination unit determines whether or not an identification signal obtained from data input to each connection terminal matches information associated with the connection terminal in the correspondence table. The changing unit determines that the identification signal obtained from the data input to the connection terminal does not match the information associated with the connection terminal in the correspondence table in any of the plurality of connection terminals. In this case, the predetermined association is changed so that the information corresponding to the identification signal that does not match and the connection terminal to which the identification signal is input correspond to each other.

  According to the electrical equipment system, the following determination can be made in the control device. That is, when the identification signal obtained from the data actually input to the connection terminal matches the information associated with the connection terminal in the correspondence table, the corresponding identification information is set to the connection terminal. The control device can determine that the electrical device is correctly connected. On the other hand, if they do not match, the control device can determine that another electrical device having identification information that does not correspond to the connection terminal is erroneously connected. And even if an electrical device is connected by mistake, the changing unit can handle the connection relationship between the connection terminal and the electrical device as correct by changing the association in the correspondence table. Become.

  ADVANTAGE OF THE INVENTION According to this invention, it becomes possible to repair automatically the wiring mistake of the electric equipment with respect to a control apparatus.

It is the block diagram which showed notionally the electric equipment system which concerns on embodiment. It is the conceptual diagram which showed the rotary switch which an electric equipment has. It is a rear view of the control apparatus with which an electric equipment system is provided. It is the flowchart which showed a series of processes which a control apparatus performs in embodiment. It is the figure which showed an example of the correspondence table. (A)-(C) It is the figure which showed the three specific examples about the data corresponding to identification information. (A) The block diagram which showed the case where an electric equipment was connected to two connection terminals accidentally, (B) The figure which showed the incorrect connection combination at that time. It is the figure which showed the corresponding | compatible table after the change process in a control apparatus.

  FIG. 1 is a block diagram conceptually showing the electrical apparatus system according to the embodiment. As shown in FIG. 1, the electrical device system includes a plurality of electrical devices A and a control device 3 that controls the plurality of electrical devices A via digital signal lines D. In FIG. 1, N electric devices A and N digital signal lines D corresponding to the electric devices A are represented by codes A (n) and D (n) (n is an integer satisfying 1 ≦ n ≦ N). Shown separately.

  In the present embodiment, the electrical device system is configured so that each electrical device A communicates with the control device 3 via a communication network (not shown), but does not communicate with other electrical devices A. Is built. In addition, none of the electric devices A has a unique device address, and on the other hand, it is possible to individually set a device address k described later. Each of the electric devices A does not recognize the device address k set for itself, and responds to a command transmitted from the control device 3 via the communication network, and performs its own operation and control to the control device 3. Execute data transmission. However, this configuration is an example and does not exclude communication between the electric devices A.

  For the electric device A, the same type of power supply device or the like is used. Specifically, devices having the same configuration are used for the electric device A. Each of the electrical devices A has a configuration in which a device address k can be set as identification information used for identification with other electrical devices A. Each of the electric devices A can transmit data S including an identification signal corresponding to the device address k (identification information) set in itself. Details of the data S will be described later. In FIG. 1, the n-th electrical device A among the N electrical devices A is denoted by reference symbol A (n), and the data S corresponding to the device address k of the electrical device A (n) is denoted by reference symbol This is indicated by S (k). Further, the symbol k (m) indicates that the device address k of each electric device A (n) is arbitrarily selected and set from the selectable address m by a user operation as will be described later.

  In the present embodiment, each of the electrical devices A has a rotary switch 11 (see FIG. 2), and the device address k is set by the user operating the rotary switch 11. The rotary switch 11 is provided, for example, on the front surface, the back surface, the side surface, and the like of the electric device A for the user to perform a setting operation. The rotary switch 11 may be covered with a cover (not shown) that can be opened and closed or attached.

  FIG. 2 is a conceptual diagram showing the rotary switch 11. As shown in FIG. 2, the rotary switch 11 has an operation shaft 11a and a switch body 11b provided with a plurality of contacts (not shown), and is energized (short-circuited) as the operation shaft 11a rotates. ) Can be switched. A selectable address m is set for each contact. In this embodiment, M numbers from 1 to M are adopted as selectable addresses m, and the front surface of the switch body 11b is marked on the operation shaft 11a when each of the contacts is energized. Numbers 1 to M of the selectable address m are written at locations facing the tip of the arrow. The selectable address m is not limited to a number but may be a character, a symbol, or the like, or a combination of a number, a character, a symbol, or the like.

  In each electrical device A (n), the user selects a contact to be energized by operating the rotary switch 11 to switch the contact. Thereby, the selectable address m set for the selected contact is set as the device address k (identification information) of the electrical device A (n) (k = m). In FIG. 1, the symbol k (m) indicates that the device address k of each electric device A (n) is arbitrarily selected from the selectable addresses m and set by the user's operation. The same applies to the other drawings. Note that the setting of the device address k is not limited to the rotary switch 11, and other setting means capable of individually setting the device address k may be used. For example, a PC (Personal computer) or the like may be connected to the electric device A, and the device address k may be set by an operation from the PC.

  As an example, the upper limit number of electrical devices A that can be connected to the control device 3 is M, and in each of the electrical devices A, any number from 1 to M that can be selected is set as the device address k. Can do. For example, in the first electric device A (1), the device address k of the electric device A (1) is set to 3 by operating the rotary switch 11 and selecting No. 3 from the selectable address m. (K = 3). Further, in the second electric device A (2), the device address k of the electric device A (2) is set to 1 by operating the rotary switch 11 and selecting No. 1 from the selectable address m. (K = 1). And in all the electric equipment A connected to the control apparatus 3, the equipment address k can be set arbitrarily, respectively.

  When the electrical device A is shipped from the manufacturing factory, the device address k is set to a default value (for example, 1). Thereafter, a device address k is set for each electric device A by the user when the electric device system is constructed.

  In addition, various identification information not limited to the device address k may be set in each of the electric devices A. In this case, each of the electrical devices A may transmit data S including an identification signal corresponding to the identification information set for itself in response to a transmission command from the transmission command unit 31.

  FIG. 3 is a rear view of the control device 3. As shown in FIG. 3, the control device 3 has a plurality of connection terminals T to which each of the plurality of electric devices A is individually connected via a digital signal line D. In FIG. 3, P connection terminals T are distinguished from each other by a symbol T (p) (p is an integer satisfying 1 ≦ p ≦ P).

  When a plurality of electrical devices A are individually controlled via the digital signal line D, each of the connection terminals T has an electrical information set with corresponding identification information (device address k in the present embodiment). The user is required to connect the device A using the digital signal line D. As an example (see FIG. 1), an electrical device A (1) whose device address k is set to 1 is connected to a connection terminal T (p = 1) via a digital signal line D (1). For the connection terminal T (p = r) (r is an integer satisfying 1 ≦ r ≦ P), the electrical device A (n) whose device address k is set to r is connected to the digital signal line D (n). It is determined in advance that the connection is made through the network. Then, the user is required to connect the electrical device A (n) whose device address k is set to r to the connection terminal T (p = r) using the digital signal line D (n). .

  However, it is not always required to set the device address k of the first electrical device A (1) to 1 and set the device address k of the nth electrical device A (n) to n. It is only necessary that the device address k of the nth electrical device A (n) connected to the connection terminal T (p = r) is set to r, and a relationship is required between n and r. is not. That is, the user operates the rotary switch 11 of the electric device A (n) to arbitrarily select a desired selectable address m (i.e., r number) from No. 1 to M, and set the device address k (m). Can be set. Then, a connection terminal T (p) to which the electric device A (n) is to be connected is determined according to the set device address k (m). Therefore, the user is required to connect the electrical device A to the connection terminal T in the order of the numbers indicated by the device address k (m). The correspondence relationship between the connection terminal T and the identification information (the device address k in the present embodiment) is not limited to this, and various modifications can be made.

  The connection terminal T may be covered with a cover (not shown) after the digital signal line D is connected thereto. Further, the connection terminal T is not limited to the back surface, and may be provided on the front surface or the side surface.

  As an example, when an electric device system is constructed by stacking N electric devices A (1) to A (N) (N ≦ M and N ≦ P), Numbers 1 to N are selected from selectable addresses m by operating each rotary switch 11. As a result, in the electrical devices A (1) to A (N), the device addresses k are set to 1 to N in the stacking order, and the respective devices are connected via the digital signal lines D (1) to D (N). Connection terminals T (p = 1) to T (p = N) are connected. In this way, the electrical device A is stacked in order on the rack, the device address k is set in the stacking order, and the device address k (m) is set by connecting to the connection terminal T via the digital signal line D. And the wiring to the connection terminal T (p) are less likely to be mistaken. However, after that, for example, when the user changes the arrangement of the electric devices A (1) to A (N) for some reason such as inventory or layout change, the user needs to rewire the digital signal line D. . At this time, due to a wiring error of the digital signal line D by the user, some of the connection terminals T (p = 1) to T (p = N) have electrical information having identification information (device address k in this embodiment) that does not correspond. Device A may be connected.

  When each of the electric devices A has a unique device address, or when each of the electric devices A is automatically given a device address k, the connection relationship between the connection terminal T and the electric device A by the digital signal line D Regardless of this, it is possible to automatically give a desired device address k to the electrical device A after wiring so as to correspond to the connected connection terminal T. However, in the present embodiment, the device address k is individually set in the plurality of electric devices A, and each electric device A is connected to the connection terminal T corresponding to the set device address k via the digital signal line D. It is assumed that this will be done. For this reason, even if the device address k is correctly set in the electrical device A, identification information that does not correspond to some of the connection terminals T due to a wiring error of the digital signal line D by the user (device address k in the present embodiment). May be connected.

  Therefore, the electrical device system of the present embodiment has a configuration capable of individually detecting whether or not the electrical device A is correctly connected to the plurality of connection terminals T. Specifically, it is as follows.

  As shown in FIG. 1, the control device 3 includes a correspondence table 30, a transmission command unit 31, a determination unit 32, and a change unit 34. FIG. 4 is a flowchart showing a series of processes described below. A series of processing performed by the control device 3 can be performed by a control processing device such as a CPU (Central Processing Unit) or a microcomputer. The series of processes may be realized by causing the control device 3 to execute a corresponding program. And such a program may be memorize | stored in a storage medium (for example, flash memory etc.) in the readable state, and may be memorize | stored in the memory | storage part (not shown) with which the control apparatus 3 is provided.

  The correspondence table 30 includes a plurality of connection terminals T and device addresses k to be input to each of the connection terminals T when the electrical device A is correctly connected to each of the connection terminals T via the digital signal line D. Is the reference data associated with each other. FIG. 5 is a diagram illustrating an example of the correspondence table 30. The correspondence table 30 shown in FIG. 5 is the connection terminal when it is predetermined that the electrical device A (n) whose device address k is r is connected to the connection terminal T (p = r). T (p = r) and information St corresponding to the device address k (= r) to be connected to this are associated with each other. In FIG. 5, together with the correspondence table 30, a correct connection combination of the electric device A and the connection terminal T is shown. Note that the information St corresponding to the device address k is not limited to the device address k itself as shown in FIG. 5, but may be information such as a pulse width W, the number of pulses C, and a delay time td, which will be described later. Good.

  Then, the electrical device A, in response to a command from the control device 3 (a transmission command from the transmission command unit 31), data S (k) including a unique identification signal corresponding to the device address k set in itself. Can be sent. In the present embodiment, the device address k (identification signal) itself set in the electric device A is adopted as the data S (k) (see FIG. 5).

  The transmission command unit 31 executes a transmission command for the electric device A (step S11 in FIG. 4). Specifically, the transmission command unit 31 requests each of the electric devices A to transmit data S (k) including an identification signal corresponding to the device address k (identification information).

  The data S (k) is a digital signal corresponding to the identification information set in the electrical device A (n) (in the present embodiment, the device address k = r). Specifically, the data S (k) is a signal that differs depending on the device address k, and the reception of the data S (k) in the control device 3 is completed after the transmission command unit 31 issues a transmission command. Is a signal that differs depending on the electric equipment A (n). A more specific example will be described below. The data S (k) is not limited to the specific example described below, and various modifications can be made.

  6A to 6C are diagrams respectively showing three specific examples of the data S (k). In the first specific example (see FIG. 6A), the data S (k) is a signal having a different pulse width W depending on the device address k (identification information). Here, the pulse width W corresponds to the number of bits in a portion in which binary numbers “1” are continuously arranged in the data string constituting the data S (k). For example, when it is predetermined that the electrical device A (n) whose device address k is r is connected to the connection terminal T (p = r), the pulse width W of the data S (k) is set to a predetermined value. The time ts can be used to correspond to the time represented by r × ts.

  In the present embodiment, the pulse width W of the data S (k = 1) transmitted from the electric device A (1) in which the device address k is set to 1 is the shortest, and the device address k is R (k is continuous). If the value is not a large value, the pulse width W of the data S (k = R) transmitted from the electric device A (N) set to R is not necessarily equal to N is the longest. That is, the pulse width W of the data S (k) input to the connection terminal T (p = r) becomes longer as the value of the corresponding device address k (k = r) becomes larger. Thus, the control device 3 (specifically, the determination unit 32) counts or measures the time of the pulse width W of the data S (k) received via the connection terminal T (p = r), thereby Based on the correspondence table 30, it is possible to determine whether or not the electrical device A (n) whose device address k is r is correctly connected to the connection terminal T (p = r).

  In the second specific example (see FIG. 6B), the data S (k) is a signal having a different pulse number C depending on the device address k. Here, the pulse number C corresponds to the number of pulses arranged with a predetermined width. For example, when it is predetermined that the electrical device A (n) whose device address k is r is connected to the connection terminal T (p = r), the number of pulses C of the data S (k) is set to C = R.

  In the case of this embodiment, the number of pulses C of the data S (k = 1) transmitted from the electric device A (1) in which the device address k is set to 1 is the smallest, and the electric device in which the device address k is set to R. The number of pulses C of the data S (k = R) transmitted from the device A (N) is the largest. That is, the pulse number C of the data S (k) input to the connection terminal T (p = r) increases as the value of the corresponding device address k (k = r) increases. Therefore, the control device 3 (specifically, the determination unit 32) counts or detects the number of pulses C of the data S (k) received via the connection terminal T (p = r), thereby responding as described above. Based on the table 30, it can be determined whether or not the electrical device A (n) whose device address k is r is correctly connected to the connection terminal T (p = r).

  In the third specific example (see FIG. 6C), the data S (k) is stored in the electric device A (n) after the transmission command unit 31 issues a transmission command in accordance with the device address k (identification information). Are signals having different delay times td until transmission of a predetermined pulse starts. Here, the delay time td corresponds to the time measured by the timer provided in each electric device A. For example, when it is predetermined that the electrical device A (n) whose device address k is r is connected to the connection terminal T (p = r), the delay time td of the data S (k) is set to a predetermined value. The time td0 can be used to correspond to the time represented by r × td0.

  In the case of the present embodiment, the delay time td of the data S (k = 1) transmitted from the electric device A (1) in which the device address k is set to 1 is the shortest, and the electric device in which the device address k is set to R. The delay time td of the data S (k = R) transmitted from the device A (N) is the longest. That is, the delay time td of the data S (k) input to the connection terminal T (p = r) becomes longer as the value of the corresponding device address k (k = r) becomes larger. Therefore, the control device 3 (specifically, the determination unit 32) counts or measures the delay time td of the data S (k) received via the connection terminal T (p = r), thereby handling the above-described response. Based on the table 30, it can be determined whether or not the electrical device A (n) whose device address k is r is correctly connected to the connection terminal T (p = r).

  The determination unit 32 receives an identification signal (for example, device address k, pulse width W, number of pulses C, delay time td, etc.) obtained from the data S input to each connection terminal T in the correspondence table 30. It is determined whether or not it matches the information St associated with T (step S12 in FIG. 4).

  As a result, the following determination in the control device 3 becomes possible. That is, the identification signal (for example, device address k, pulse width W, number of pulses C, delay time) obtained from the data S actually input to the target connection terminal T, with each connection terminal T as a target of determination. td, etc.) matches the information St previously associated with the connection terminal T in the correspondence table 30 (information related to the device address k to be connected to the connection terminal T). The control device 3 can determine that the electrical device A for which the corresponding device address k is set is correctly connected to the connection terminal T. On the other hand, if they do not match, the control device 3 determines that the electrical device A in which another device address k that does not correspond is connected to the target connection terminal T by mistake. Can do.

  Therefore, according to the electric device system, it is possible to individually detect whether or not the electric device A is correctly connected to the plurality of connection terminals T.

  FIG. 7A is a block diagram showing a case where the electric devices A (n1) and A (n2) are erroneously connected to the two connection terminals T (p = r1) and T (p = r2). FIG. 7B is a diagram showing an incorrect connection combination at that time. In FIG. 7B, the correspondence table 30 is a combination of the connection terminal T (p) and information St corresponding to the device address k to be connected to the connection terminal T (p), and shows a predetermined one. Yes. Information St is set in the two connection terminals T (p = r1) and T (p = t2) in order to associate r1 and r2 as device addresses k to be connected to them. In addition, the connection combination shown in FIG. 7B is a combination of the electric device A connected to the connection terminal T (p), transmitted from the electric device with the device address k set in the electric device A. This is shown together with the data S (k).

  7A and 7B, the electric device A (n1) having the device address k set to r1 is connected to the connection terminal T (p = r2) via the digital signal line D (n1). Is connected to the connection terminal T (p = r1) and the electric device A (n2) whose device address k is set to r2 is connected via the digital signal line D (n2), that is, the connection terminal A case is shown in which the electric devices A (n1) and A (n2) are connected in reverse to T (p = r1) and T (p = r2).

  Originally, the electric device A (n1) whose device address k is r1 is connected to the connection terminal T (p = r1), and the electric device A (device address k is r2) is connected to the connection terminal T (p = r2). It is predetermined that n2) is connected (see FIG. 7B). Therefore, in the correspondence table 30, the information St (St = r1 in this embodiment) corresponding to the device address k (= r1) of the electrical device A (n1) is associated with the connection terminal T (p = r1). , Information St (St = r2 in this embodiment) corresponding to the device address k (= r2) of the electrical device A (n2) is associated with the connection terminal T (p = r2).

  However, in the example shown in FIGS. 7A and 7B, the data S (k = r2) from the electric device A (n2) is input to the connection terminal T (p = r1) and connected. Data S (k = r1) from the electric device A (n1) is input to the terminal T (p = r2). Therefore, an identification signal (in this embodiment, device address k = r2) obtained from the data S (k = r2) received by the control device 3 via the connection terminal T (p = r1) is stored in the correspondence table 30. It does not match the information St (in this embodiment, the device address k = r1) associated with the connection terminal T (p = r1), and therefore the determination unit 32 determines the connection terminal T (p = r1). A mismatch between the identification signal and the information St is detected. That is, the determination unit 32 detects that the electrical device A (n2) whose device address k is r2 is erroneously connected to the connection terminal T (p = r1).

  An identification signal (in the present embodiment, device address k = r1) obtained from the data S (k = r1) received by the control device 3 via the connection terminal T (p = r2) is stored in the correspondence table 30. It does not match the information St (in this embodiment, the device address k = r2) associated with the connection terminal T (p = r2), and therefore the determination unit 32 determines whether the connection terminal T (p = r2) A mismatch between the identification signal and the information St is detected. That is, the determination unit 32 detects that the electrical device A (n1) whose device address k is r1 is erroneously connected to the connection terminal T (p = r2).

  In the present embodiment, the determination unit 32 only needs to detect that the device address k (identification signal) connected to the connection terminal T does not match the information St in the correspondence table 30, and the device address k is set. It may not be possible to specify how many electrical devices A the electrical device A is.

  When the determination unit 32 determines that the identification signal (in the present embodiment, the device address k) and the information St do not match, the changing unit 34 adds the identification signal included in the data S that does not match. The predetermined association is changed so that the corresponding information and the connection terminal T to which the data S is input correspond to each other (step S13 in FIG. 4). FIG. 8 shows the correspondence table 30 after the change process.

  As an example, the changing unit 34 can change the association in the correspondence table 30. In the case of the example shown in FIGS. 7A and 7B, in the correspondence table 30, information corresponding to the device address k (= r1) of the electrical device A (n1) is connected to the connection terminal T (p = r1). St (St = r1 in this embodiment) is associated in advance, and information St (this embodiment) corresponding to the device address k (= r2) of the electrical device A (n2) is associated with the connection terminal T (p = r2). Then, St = r2) is associated in advance. When the device address k (identification signal) obtained from the data S (k) input to the connection terminal T (p = r1) is k = r2, the changing unit 34 connects the connection terminal in the correspondence table 30. The information St = r1 previously associated with T (p = r1) is changed to St = r2. Similarly, when the device address k (identification signal) obtained from the data S (k) input to the connection terminal T (p = r2) is k = r1, the changing unit 34 connects in the correspondence table 30. The information St = r2 previously associated with the terminal T (p = r2) is changed to St = r1.

  In other words, the changing unit 34 changes the association in the correspondence table 30 as shown in FIG. 8 to change the identification signal included in the data S (k = r2) to the connection terminal T (p = r1). Corresponding information (in this embodiment, device address k = r2) is associated, and information corresponding to the identification signal included in the data S (k = r1) is connected to the connection terminal T (p = r2) (this embodiment). Then, the device address k = r1) can be associated.

  According to this configuration, even when the electric device A is erroneously connected to a connection terminal T different from the corresponding connection terminal T, the connection terminal T And the electrical device A can be handled as being correct, and as a result, connection errors can be automatically resolved. That is, it becomes possible to automatically repair a wiring mistake of the electric device A with respect to the control device 3. Therefore, in the electrical equipment system, it is possible to recover a state in which commands can be individually transmitted from the control device 3 to the electrical equipment A.

  The above description of the embodiment is to be considered in all respects as illustrative and not restrictive. The scope of the present invention is shown not by the above embodiments but by the claims. Further, the scope of the present invention is intended to include all modifications within the meaning and scope equivalent to the scope of the claims.

A Electrical equipment D Digital signal line 3 Control device T Connection terminal 11 Rotary switch 11a Operation shaft 11b Switch body 30 Corresponding table 31 Transmission command part 32 Determination part 34 Change part k Equipment address m Selectable address C Number of pulses S Data St Information td Delay time ts, td0 Predetermined time W Pulse width

Claims (4)

Multiple electrical devices,
Each of the plurality of electrical devices has a plurality of connection terminals that are individually connected via digital signal lines, and a control device that controls the plurality of electrical devices via the digital signal lines;
With
In each of the plurality of electric devices, identification information used for identification with other electric devices is set, and each electric device includes an identification signal corresponding to the identification information set in itself. Data can be sent,
The controller is
A correspondence table in which the plurality of connection terminals and information on the identification signal to be input to each of the connection terminals are associated with each other in advance;
A transmission command unit that transmits the data to each of the plurality of electrical devices;
A determination unit that determines whether the identification signal obtained from the data input to each connection terminal matches information associated with the connection terminal in the correspondence table;
In any one of the plurality of connection terminals, the determination unit determines that the identification signal obtained from the data input to the connection terminal does not match information associated with the connection terminal in the correspondence table. If it is determined, a change unit that changes a predetermined association so that information corresponding to the identification signal that did not match and the connection terminal to which the identification signal is input correspond to each other;
Including electrical equipment systems.   The electric device system according to claim 1, wherein the identification signal is a signal having a different pulse width for each electric device, and the pulse width is used as the information.   The electrical device system according to claim 1, wherein the identification signal is a signal having a different number of pulses for each electrical device, and the number of pulses is used as the information.   The identification signal is a signal for which the delay time from when the transmission command unit issues a transmission command to when the electric device starts transmitting a predetermined pulse is different for each electric device, and the delay time is the information. The electric equipment system according to claim 1 used.

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