JP2019067556A - Communication system and control device - Google Patents

Abstract

To make it possible to appropriately control a control object.SOLUTION: A master unit 10 transmits a control command to instruct a change of the state of lighting fixtures 16 connected with slave units 14 by broadcast communication. Then, the master unit 10 transmits a state confirmation command to each slave unit 14 by individual communication. The master unit 10 determines whether the change of the state of the lighting fixture 16 is a success or failure according to a response from each slave unit 14. When the master unit 10 determines that it is a failure, it stops individual communication thereafter, and transmits the control command to the slave units 14 by broadcast communication.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a communication system and a control device.

  Patent Document 1 discloses a communication system in which a master unit causes a slave unit connected via a network to change the state of a lighting fixture that is a control target of the slave unit. In this communication system, the parent device controls the lighting device through the child device by using broadcast and individual communication properly. In more detail, when changing the state of a certain lighting fixture, the master unit generates a control command indicating the control content to be executed by the slave unit to which the lighting fixture is connected, and all of them are broadcasted. Send to the handset of Each slave unit executes corresponding control if the control content contained in the control command relates to itself, while it does not perform special control if it is not related to itself. Subsequently, the parent device sequentially transmits a state confirmation command for confirming the state of the lighting apparatus through individual communication. The child device that has received the state confirmation command transmits a response indicating the state of the lighting device to the parent device. When the main unit detects a contradiction between the state of each lighting fixture indicated by the response from the child unit and the state of each lighting fixture indicated by the transmitted control command, the control command is resent.

Japanese Patent Application Laid-Open No. 2000-12242

  In the communication system disclosed in Patent Document 1, even after detecting a contradiction in the response from a certain slave, the master continues the individual transmission of the state confirmation command until the responses from all the slaves are received. . For this reason, even after the retransmission of the control command is determined, it takes time for the individual communication. For this reason, a relatively long time is required from the detection of contradiction to the re-transmission of the control command, and the luminaire may not be properly controlled.

  Moreover, in the communication system disclosed in Patent Document 1, it is also possible to directly operate the child device to change the state of the lighting apparatus. When there is a change in the state of the luminaire which is not based on a control command from the parent machine, the parent machine can not recognize that the state of the luminaire has been changed. Therefore, for example, after the master unit transmits the control command, if the slave unit is directly operated before the status confirmation signal is transmitted and the state of the lighting apparatus is changed, the master unit instructs the control command And it is determined that there is a contradiction between the state indicated by the response from the slave unit. In this case, although the state of the lighting device is correct, the master retransmits unnecessary control commands and changes the state of the lighting device. For this reason, the lighting device can not be properly controlled.

  The same problem occurs in the case where a control object other than a lighting fixture is controlled by a communication system including the above-described master unit and slave unit.

The present invention has been made to solve the above-mentioned problems, and it is an object of the present invention to appropriately control a control target.
More specifically, the present invention aims to provide a communication system and a control device capable of rapidly retransmitting control commands. Another object of the present invention is to provide a communication system and a control device that do not unnecessarily retransmit control commands.

A communication system according to the present invention includes a master unit and a plurality of slave units. A controlled object is connected to each slave unit.
The parent machine is
A control command for changing the state of the control target is transmitted to the plurality of slaves by broadcast, and subsequently, a response indicating the state of the control target connected to the plurality of slaves is sent to the plurality of slaves Transmitting a state confirmation command for transmitting the individual communication through the individual communication, and the plurality of slaves receive the response transmitted according to the state confirmation instruction through the individual communication,
Based on the control command transmitted by broadcast communication and the response received by individual communication from the plurality of slave units, it is determined whether the slave unit has succeeded in changing the state indicated by the control command. ,
When it is determined that the change of the status is unsuccessful, the transmission of the status confirmation command in the individual communication is interrupted, and the control command is retransmitted to the plurality of slaves by broadcast, and A state confirmation command is sequentially transmitted by individual communication, and responses are received by individual communication from the plurality of handsets.
Also, the child device is
The control command transmitted by broadcast communication is received from the master unit, and the control target is controlled in accordance with the control command,
A status confirmation command transmitted by individual communication is received from the master, a response indicating the status of a control target connected to the self is generated, and the response is sent to the master.

  According to the present invention, when it is determined that the control is unsuccessful based on the response from the slave, the master can promptly retransmit the control command to the slave.

Communication system according to an embodiment of the present invention Configuration of the master shown in Figure 1 The figure which shows an example of the hardware constitutions of the parent machine shown in FIG. Configuration diagram of the slave shown in Figure 1 Configuration diagram of hand control terminal and external control terminal shown in FIG. 1 (A)-(c) is a figure which shows an example of the data stored in the transmission buffer shown in FIG. 2, (d) is a figure which shows the data stored in the memory | storage part shown in FIG. A flowchart of transmission buffer registration processing executed by the parent device shown in FIG. Flow chart of control process executed by the parent device shown in FIG. 1 FIG. 7 is a diagram showing a transmission / reception sequence of signals between a master unit and a slave unit in the communication system shown in FIG. 1, in which all slave units succeed in control. FIG. 10 is a diagram showing a transmission / reception sequence of signals between a master unit and a slave unit in the communication system shown in FIG. 1, in which control by a control command is unsuccessful for some slave units. FIG. 17 is a diagram showing a transmission / reception sequence of signals between a master unit and a slave unit in a conventional communication system, in which control by a control command is unsuccessful for some slave units. (A), (b) is a figure which shows an example of the data stored in a transmission buffer in Embodiment 1. In the second embodiment of the present invention, a diagram showing an example of data stored in the transmission buffer Flow chart of transmission buffer registration process executed by the master unit of the communication system according to Embodiment 3 of the present invention (A)-(d) is a figure which shows an example of the data stored in the transmission buffer of the main | base station of the communication system which concerns on Embodiment 3. FIG. 17 is a diagram showing a transmission / reception sequence of signals between a master unit and a slave unit in the communication system according to the third embodiment, in which control by a control command is unsuccessful for some slave units. The figure which shows an example of the data stored in the transmission buffer of the main | base station of the communication system which concerns on the modification of Embodiment 3. Flow chart of control process executed by slave unit of communication system according to Embodiment 4 of the present invention Flow chart of command response processing executed by the slave unit of the communication system according to the fourth embodiment of the present invention In the communication system according to Embodiment 4, a diagram showing a transmission / reception sequence of signals between a master unit and a slave unit The figure which shows the example of the data stored in the transmission buffer of the parent machine which concerns on Embodiment 1-4.

  Hereinafter, a communication system and a communication method according to an embodiment of the present invention will be described with reference to the drawings.

First Embodiment
The case where the communication system and the communication method according to the first embodiment are applied to a lighting system that controls a lighting fixture will be described as an example.

  As shown in FIG. 1, the communication system 1 according to the present embodiment includes one parent device 10, a hand control terminal 12 for setting the parent device 10, and m lighting devices 18-1 to 18-. m, and a network 22 connecting the parent device 10, the hand control terminal 12, and the lighting devices 18-1 to 18-m. Here, m is an integer of 2 or more.

  The lighting device 18-i (i = 1 to m) includes a slave 14-i and a lighting fixture 16-i connected to the slave 14-i. Note that the number of lighting devices connected to each child device 14-i is not limited to one, and the number is arbitrary. However, in order to facilitate understanding, in the following description, the number of lighting fixtures 16 connected to each child device 14 is one.

  In the following description, lighting devices 18-1 to 18-m are generically referred to as lighting device 18, and handsets 14-1 to 14-m are generically referred to as handset 14 and lighting fixtures 16-1 to 16-m. May be generically called a lighting fixture 16.

  The parent device 10 is a control device for controlling the plurality of lighting devices 18, and functions as a host device of the child device 14. When there is a need to change the state of at least one luminaire 16, the parent machine 10 generates a control command instructing to change the state of the luminaire 16, and the generated control command is transmitted to the child machine Broadcast to 14-1 to 14-m. In addition, the change of the state of a lighting fixture means generally changing the operation state of the lighting fixtures 16-1 to 16-m. For example, the change of the lighting state and the lighting off state, the illuminance of the light control (emission intensity) Change of the operation mode, etc. In addition, when the lighting apparatus 16 includes a plurality of light emitters, the change of the state includes, for example, the change of the number of light emitters to light, and the change of designation of the light emitters to be lighted.

  After transmitting the control command, master device 10 transmits a state confirmation command to slave devices 14-1 to 14-m by individual communication. In response to the state confirmation command, master device 10 changes the state of the control target in slave devices 14-1 to 14-m based on the response transmitted from slave devices 14-1 to 14-m by individual communication. Are sequentially determined whether or not

  When it is determined that the change of the state of the lighting fixtures 16-1 to 16-m is unsuccessful in any of the slaves 14-1 to 14-m, that is, the base unit 10 determines that the control has failed, the state is The transmission of the confirmation command is interrupted at that time, and the control command is retransmitted by broadcast to the slaves 14-1 to 14-m.

  On the other hand, the slaves 14-1 to 14-m receive the control command transmitted by broadcast by the master 10 via the network 22. The slave units 14-1 to 14-m interpret the received control command, and are required when it is instructed to change the state of the lighting fixtures 16-1 to 16-m connected thereto. Execute control. Further, the slaves 14-1 to 14-m receive the status confirmation command addressed to themselves transmitted from the master 10 by individual communication. The slaves 14-1 to 14-m transmit a response indicating the status of the lighting fixtures 16-1 to 16-m connected to the slave 10 to the master 10 in response to the received status confirmation command.

  The lighting fixtures 16-1 to 16-m are connected to the slaves 14-1 to 14-m, and the status is directly controlled by the slaves 14-1 to 14-m, and indirectly The state is controlled by the parent device 10 through the devices 14-1 to 14-m.

  The hand control terminal 12 is connected to the network 22 and instructs the parent device 10 to change the state of the lighting fixtures 16-1 to 16-m according to the user's operation. The hand control terminal 12 functions as an instruction device that instructs the parent device 10 to change the state of the lighting device 16.

  The external control terminal 20 is connected to the slaves 14-1 to 14-m, and changes the state of the lighting fixtures 16-1 to 16-m connected to the slaves 14-1 to 14-m connected. To direct. The external control terminal 20 may be connected to only a part of the handsets 14. In FIG. 1, the external control terminal 20 is connected only to the slave unit 14-2. The external control terminal 20 instructs the slave device 14-2 to change the state of the lighting fixture 16-2. In this case, the handset 14-2 functions as a second handset in the claims.

  The network 22 may be any of the Internet, a wide area network (WAN), a local area network (LAN), wired and wireless.

[Component of communication system 1]
The components of the communication system 1 will be described in detail below.

[Master device 10]
The parent device 10 functions as a controller of the lighting fixtures 16-1 to 16-m.
As shown in FIG. 2, base unit 10 transmits data between network 22 via network IF 100 via network IF (interface) 100 connected to network 22, transmission buffer 102 for storing transmission data, and network IF 100. A communication unit 104 that performs transmission and reception, a communication control unit 106 that controls the communication unit 104, a state management unit 108 that manages the state of the lighting fixture 16, and a storage unit 110 that stores input data.

  The network IF 100 transmits data to the hand control terminal 12 and the handset 14 via the network 22 and receives data from the hand control terminal 12 and the handset 14.

  The communication unit 104 transmits and receives data to and from the network 22 via the network IF 100.

  The communication control unit 106 controls the communication unit 104 to transmit a control command to the slave 14 by broadcast communication in the broadcast communication phase. Further, the communication control unit 106 controls the communication unit 104 to sequentially transmit a state confirmation command to each child device 14 by individual communication in the individual communication phase corresponding to the broadcast communication phase. Further, the communication control unit 106 receives a response indicating the state of the lighting fixture 16 connected to the child device 14 transmitted from each child device 14 in response to the state confirmation command.

  The state management unit 108 determines whether or not the state of the lighting fixture 16 indicated by the transmitted control command matches the state of the lighting fixture 16 indicated by the response from the child device 14 received in the individual communication. It functions as a determination unit that determines whether the change of the state 16 has succeeded. The state management unit 108 adds data relating to the child device 14 that has transmitted the response to the determination result, and outputs the result to the communication control unit 106.

  The transmission buffer 102 stores the control command and the state confirmation command supplied from the communication control unit 106 and the related data, and provides the communication unit 104 with the related data. The transmission buffer 102 is an example of a first storage unit in the claims.

  The storage unit 110 stores data supplied from the communication control unit 106, for example, a transmitted control instruction and a state confirmation instruction, and supplies the data to the communication control unit 106. In addition, the storage unit 110 holds a failure counter that counts the number of handsets 14 for which the change of state is unsuccessful. The storage unit 110 is an example of a second storage unit in the claims.

  The communication control unit 106, when instructed by the hand control terminal 12 to change the state of any of the lighting fixtures 16, generates a control command instructing this change to all the child devices 14, and transmits this The phase, the type of transmission, and the control target are specified and registered in the transmission buffer 102. Further, the communication control unit 106 generates a state confirmation command for notifying the state of each lighting device 16 to each child device 14, specifies the communication phase for transmitting this, the type of transmission, and the control object, It is registered in the transmission buffer 102.

  Specifically, for example, it is assumed that it is instructed from the hand control terminal 12 that the illuminance of all the lighting fixtures 16-1 to 16-m be I. The communication control unit 106 generates a control command instructing to set the illuminance to I. As shown in FIG. 6A, the communication control unit 106 transmits the generated control command, the broadcast communication phase “F100” for transmitting this control command, the transmission type “broadcast”, and “all” as the control object. And are registered in the transmission buffer 102 in association with each other. The communication control unit 106 further generates a state confirmation command to be sequentially transmitted to the slaves 14-1 to 14-m, and as shown in FIG. 6 (b), this state is set to the broadcast communication phase "F100". Corresponding individual communication phase “F200”, transmission type “individual”, controlled object “14-1”, “14-2”. . . “14-m” is associated and registered in the transmission buffer 102. In the present embodiment, the order of transmission is taken as the order of list No. Therefore, the list No. A command of 1 is the highest in transmission order.

  The parent device 10 physically comprises, for example, an arithmetic processing unit 24 shown in FIG. 3, and realizes all or part of its function by cooperation of software and hardware. As illustrated, the arithmetic processing unit 24 includes an arithmetic processing unit 240 that executes software, an external IF 242 that transmits and receives data, a memory 244 that functions as a main memory of the arithmetic processing unit 240, and a non-volatile storage device 246. , And an operation device 248 for receiving a user operation.

  The arithmetic processing unit 240 includes a processor such as a CPU (Central Processing Unit) and peripheral circuits such as a timer circuit and an interrupt control circuit, executes a program, and controls other components.

  The external IF 242 performs transmission and reception of data between the arithmetic processing unit 240 and the hand control terminal 12 and the slave 14 via the network 22.

The memory 244 includes a read only memory (ROM) and a random access memory (RAM), functions as a work memory for the arithmetic processing unit 240, stores a basic operation program, develops a program to be processed, and stores data. .
The storage device 246 includes a non-volatile storage medium such as a hard disk drive (HDD), a digital versatile disc (DVD), a flash memory, etc., stores an operation program in the storage medium, and reads data from the storage medium.
The operation device 248 receives an operation by the user and supplies operation data to the arithmetic processing unit 240.

[Slave 14]
The slave unit 14 is a type of control device that controls the luminaire 16, which is a control object connected to itself, in accordance with the instruction of the master unit 10 corresponding to the upper apparatus. As shown in FIG. 4, the child device 14 includes a communication control unit 142 that controls communication with the parent device 10, a command analysis unit 144 that analyzes a command from the parent device 10, and a lighting fixture 16 that is a control object. And a lighting fixture control unit 148 for controlling the lighting fixture 16.

  The communication control unit 142 receives the control command from the parent device 10 and the state confirmation command via the network IF 100 and the communication unit 104, and supplies the command to the command analysis unit 144. Also, when notified of the state of the lighting fixture 16 from the state detection unit 146, the communication control unit 142 adds data such as identification information for identifying the own device to data indicating this state, and generates a response. It transmits to the main | base station 10 via the communication part 104 and the network IF100.

The command analysis unit 144 analyzes the command supplied from the communication control unit 142, and determines whether it is a control command or a state confirmation command.
When determining that the command is a control command, the command analysis unit 144 further determines whether it is necessary to change the state of the lighting fixture 16 connected to the own device. When the command analysis unit 144 determines that the change of the state is necessary, the command analysis unit 144 controls the lighting device control unit 148 to change the state of the lighting device 16 to the instructed state.
When the command analysis unit 144 determines that the supplied command is a state confirmation command, the command analysis unit 144 causes the lighting device control unit 148 to acquire the state of the lighting device 16 and notifies the state detection unit 146 of the state. Subsequently, when notified of the state of the lighting apparatus 16 from the state detection unit 146, the command analysis unit 144 notifies the communication control unit 142 of the state.

  The external control terminal 20 is connected to the command analysis unit 144. The command analysis unit 144 analyzes an instruction input from the external control terminal 20 to change the state of the lighting device 16. The command analysis unit 144 controls the connected luminaire 16 through the luminaire control unit 148 based on the analyzed instruction.

  The state detection unit 146 detects the state of the lighting fixture 16 of the own device based on the information from the lighting fixture control unit 148.

  The lighting fixture control unit 148 changes the state of the lighting fixture 16 according to the control of the command analysis unit 144, acquires information indicating the current state of the lighting fixture 16, and supplies the information to the state detection unit 146.

  The network IF 100, the transmission buffer 102, and the communication unit 104 shown in FIG. 4 have substantially the same function and configuration as the network IF 100, the transmission buffer 102, and the communication unit 104 that constitute the master unit 10.

  With the components shown in FIG. 4, the slave unit 14 receives the control command transmitted from the master unit 10 by broadcast communication, and changes the state of the lighting fixture 16 connected to the slave unit 14 to the received control command. It is determined whether or not an instruction to do is included. If the child device 14 determines that the instruction to change the state of the lighting device 16 is included, the slave device 14 changes the state of the lighting device 16 as the control object according to the instruction included in the control command. For example, when the control command illustrated in FIG. 6A is received, the illuminance of the lighting fixture 16 connected to the user is controlled to I.

  In addition, when receiving the status confirmation command transmitted from the master 10 by individual communication, the slave 14 detects the status of the lighting fixture 16 connected to the slave 10, and this slave 14 is data indicating the detected status. Data, such as identification information for specifying the ID, etc., to generate a response and transmit it to the parent device 10.

  Note that the slave unit 14 can be configured by the arithmetic processing unit 24 shown in FIG. 3 in the same manner as the master unit 10 in terms of hardware. The internal IF may be arranged as needed, and the luminaire 16 may be connected.

[Hand control terminal 12 and external control terminal 20]
FIG. 5 is a diagram showing the configurations of the hand control terminal 12 and the external control terminal 20 shown in FIG. The hand control terminal 12 is configured of, for example, a wall switch for the parent device 10. Also, the external control terminal 20 is configured of, for example, a remote control terminal (remote controller) for the slave 14.

  As illustrated, the hand control terminal 12 and the external control terminal 20 each include an input / output unit 200 including an input unit and a display unit, an input / output control unit 202, and a communication unit 104 that communicates with the outside. .

  The input / output unit 200 includes an input unit and a display unit (all not shown), receives user's operation for changing the state of the lighting device 16, displays the content of the operation on the display device, and performs input / output control Output to the unit 202. Further, the input / output unit 200 displays data received from the outside by the input / output control unit 202 via the communication unit 104.

  The input / output control unit 202 transmits a user's instruction for changing the state of the lighting fixture 16 input to the input / output unit 200 to the higher-level device via the communication unit 104. Further, the input / output control unit 202 causes the input / output unit 200 to display data received from the higher-level device via the communication unit 104.

  The communication unit 104 transmits and receives data between the higher-level device and the input / output control unit 202. Here, in the case of the hand-held control terminal 12, the upper-level device is the parent device 10 via the network 22. On the other hand, in the case of the external control terminal 20, it is a slave unit 14.

  The hand control terminal 12 and the external control terminal 20 can be configured by the arithmetic processing unit 24 shown in FIG. 3 in the same manner as the parent device 10 in terms of hardware. Further, the hand control terminal 12 may be a part of the function of the parent device 10, and the external control terminal 20 may be a part of the function of the child device 14.

(Operation)
Next, the operation of the communication system 1 having the above configuration will be described with reference to the operation flow of the parent device 10 shown in FIGS. 7 and 8.

The user operates the input / output unit 200 of the hand control terminal 12 to input the desired control content. The hand control terminal 12 transmits the input instruction to the parent device 10.
When receiving the instruction from the hand control terminal 12, the communication control unit 106 of the base unit 10 starts the transmission buffer registration process shown in FIG.

  The communication control unit 106 first receives an instruction from the hand control terminal 12 (step S10), and a control instruction for realizing the instructed change and the state of the lighting fixture 16 in each child device 14-1 to 14-m. And generates a state confirmation command for inquiring (step S12).

The communication control unit 106 writes the generated control command into the transmission buffer 102 together with information such as the communication phase, the transmission type, and the control target, as illustrated in FIG. As illustrated in FIG. 6B, the information is added to the transmission buffer 102 together with information such as the communication phase, the transmission type, and the control target (step S14). Here, the order of the state confirmation command is the order to slave units 14-1 to 14-m, the individual communication of the state confirmation instruction corresponding to the broadcast communication phase of the control instruction is F100, and the broadcast communication phase F100. The phase is F200.
This is the end of the transmission buffer registration process this time.

  On the other hand, the communication control unit 106 continuously executes the control process shown in FIG. 8 while the power is on.

  In this process, the communication control unit 106 first inputs the command having the first transmission order among the commands stored in the transmission buffer 102 (step S16).

  The communication control unit 106 determines which of the control command for broadcast communication and the state confirmation command for individual communication is input (step S18), and determines that the control command for broadcast communication is input ((step S18) Step S18: Broadcast) The control command is broadcasted to all the slaves 14 (Step S20). Furthermore, the control command is deleted from the transmission buffer 102, stored in the storage unit 110 (step S22), and then the process returns to step S16.

  On the other hand, when it is determined in step S18 that the command taken in in step S16 is a state confirmation command to be transmitted by individual transmission (step S18: individual), the communication control unit 106 designates the taken in state confirmation command In the communication phase, individual transmissions are made to the designated slave 14 (step S24).

  The communication control unit 142 of the slave unit 14 receives the state confirmation command addressed to itself and provides this to the command analysis unit 144. The command analysis unit 144 analyzes the state confirmation command, controls the lighting fixture control unit 148, collects information indicating the state of the lighting fixture 16, and provides the information to the state detection unit 146. The state detection unit 146 detects the state of the lighting fixture 16 from the provided information, and supplies state information indicating the state of the lighting fixture 16 to the communication control unit 142 via the command analysis unit 144.

  The communication control unit 142 attaches its own address, identification information and the like to the state information, and transmits the state information to the base unit 10 via the communication unit 104 and the network IF 100.

  After transmitting the status confirmation command, the communication control unit 106 of the base unit 10 determines whether a response from the handset 14 has been received (step S26). When the threshold time has not passed and the response has not been received even if the threshold time has been exceeded, step S26 is repeated and the response from the handset 14 is awaited.

  On the other hand, when the response is received, and when the response is not received even if the predetermined threshold time is exceeded from the transmission of the state confirmation command (step S26: no reception / response), the communication control unit 106 performs control It is determined whether the control instructed by the command has succeeded (step S30). Specifically, the communication control unit 106 controls the state management unit 108 so that the state instructed by the transmitted control instruction matches the state of the lighting fixture 16 indicated by the response, or is there a contradiction, or And determine whether there is a response within a predetermined response period.

  When the communication control unit 106 determines that the control is successful (step S30: success), the communication control unit 106 deletes the state confirmation instruction transmitted in the immediately preceding step S24 from the transmission buffer 102 (step S32). Thereafter, the process jumps to step S40 described later.

  On the other hand, when the state management unit 108 determines that the contradiction or no response is detected, the communication control unit 106 determines that the control of the state change to the lighting fixture 16 by the handset 14 is unsuccessful (step S30: unsuccessful / not successful). No response), the state confirmation command transmitted in step S24 is deleted from the transmission buffer 102, and is stored in the storage unit 110 for re-transmission (step S34). Subsequently, the communication control unit 106 increments the count value of the failure counter disposed in the storage unit 110 by 1 (step S36).

  Subsequently, the communication control unit 106 determines whether the count value of the failure counter, that is, the number of handsets 14 whose control has failed, is equal to or greater than a predetermined threshold (step S38). ). When it is determined that the number of unsuccessful attempts is equal to or more than the threshold (step S38: equal to or more than the threshold), the process proceeds to step S44 described later.

  After deleting the state confirmation command from the transmission buffer 102 in step S32, or when it is determined in step S38 that the number of unsuccessful attempts is less than the threshold (step S38: less than the threshold), whether individual communication has ended It discriminates (step S40). If not completed, that is, if there is a state confirmation command not transmitted to the transmission buffer 102 (step S40: not completed), the process returns to step S16, and the same process is performed for the next state confirmation command. Run.

  On the other hand, when it is determined in step S40 that transmission of all the state confirmation commands has been completed (step S40: end), the communication control unit 106 changes the state of the lighting fixture 16 instructed by the control command as a whole. Determine if successful. If it is determined that the process has succeeded (Step S42: Success), the process proceeds to Step S46 described later. If it is determined that the process is unsuccessful (step S42: unsuccessful), the process proceeds to step S44.

In step S44, the communication control unit 106 causes the transmission buffer 102 to re-store the control instruction and the state confirmation instruction saved in the storage unit 110. In step S46, the related data in the storage unit 110 and the count value of the failure counter are erased (step S46), and the process returns to step S16.
The same operation is repeated thereafter.

Next, the process shown in the flowcharts shown in FIGS. 7 and 8 will be described based on a specific example.
Here, in order to facilitate understanding, it is assumed that an instruction to set the illuminance of all the lighting fixtures 16 to I is input from the hand control terminal 12. Also, m = 3.

First, the operation in the case where all the control in the child device 14 is successful will be described with reference to the sequence diagram of FIG.
The hand control terminal 12 transmits the input instruction to the parent device 10. When receiving the instruction from the hand control terminal 12, the communication control unit 106 of the base unit 10 starts the transmission buffer registration process shown in FIG.

  First, the communication control unit 106 takes in an instruction from the hand control terminal 12 (step S10), and illuminates each child device 14-1 to 14-m with a control instruction including control contents for realizing the instructed change. A state confirmation command for inquiring the state of the device 16 is generated (step S12).

The communication control unit 106 writes the generated control command into the transmission buffer 102 together with information such as the communication phase, the transmission type, and the control target, as illustrated in FIG. As illustrated in FIG. 6B, the information is added to the transmission buffer 102 together with information such as the communication phase, the transmission type, and the control target (step S14). Here, the order of the state confirmation command is the order to slave units 14-1 to 14-m, the individual communication of the state confirmation instruction corresponding to the broadcast communication phase of the control instruction is F100, and the broadcast communication phase F100. The phase is F200.
Thus, the communication control unit 106 ends the current transmission buffer registration process.

  In step S16 of FIG. 8, the communication control unit 106 takes in the first control instruction from the data stored in the transmission buffer 102 shown in FIG. 6B, and determines that it is a control instruction (step S18).

Subsequently, as shown in FIG. 9, the communication control unit 106 broadcasts the control command to the slaves 14-1 to 14-m in the broadcast communication phase F100 (step S20).
Subsequently, data relating to the control command stored in the transmission buffer 102 is deleted as shown in FIG. 6C, and is stored in the storage unit 110 as shown in FIG. 6D (step S22).

  The communication control unit 142 of the slave units 14-1 to 14-m receives the control command transmitted from the master unit 10 and causes the command analysis unit 144 to analyze it. The command analysis unit 144 analyzes the control command, and executes the control if necessary control exists. In this example, the command analysis unit 144 of each child device 14-1 to 14-m analyzes the control command, and the lighting fixtures 16-1 to 16- connected to itself through the lighting fixture control unit 148. Control is performed to set the illuminance of m to I indicated.

  The communication control unit 106 takes in the status confirmation command addressed to the first handset 14-1 from the data stored in the transmission buffer 102 shown in FIG. 6C (step S16), and is an individual transmission. And (step S18).

  As shown in FIG. 9, when the individual communication phase F200 starts, the communication control unit 106 transmits a state confirmation command to the slave 14-1 by individual communication (step S24).

  The slave 14-1 receives the state confirmation command, generates a response including data indicating the state of the lighting fixture 16-1, and transmits the response to the master 10.

  Then, the communication control unit 106 of the base unit 10 determines that the response is received (step S26), determines that the control is successful from the content of the response (step S30), and the state of the head from the transmission buffer 102 shown in FIG. The data related to the confirmation command is deleted (step S32), and it is determined that the individual is not completed (step S40), and the process returns to step S16 to repeat the same processing.

As a result, a status check command is transmitted in order from the master unit 10 to the slave units 14-2 and 14-m by individual communication, and a response is transmitted from the slave units 14-2 and 14-m.
When the base unit 10 receives responses from all the slave units 14-1 to 14-m (step S40: end), it determines that the control is successful (step S42) and deletes the storage data of the storage unit 110 ((step S42) Step S46) Return to step S16.

  Next, in the same scene, the operation when the change of the state of the lighting fixture 16 is unsuccessful will be described with reference to FIG.

In this case, the control command and the status check command stored in the transmission buffer 102, and the operation in which the master unit 10 transmits the control command and the status check command, and the slave units 14-1 to 14-m return a response. The operation is basically the same as the example shown in FIG.
However, suppose that the change of the illumination intensity of the lighting fixture 16-2 by the subunit | mobile_unit 14-2 was unsuccessful.

  In this case, the master unit 10 broadcasts a control command to all the slave units 14-1 to 14-m, and subsequently transmits a status confirmation instruction to the slave unit 14-1 and then, the slave unit 14- The process up to transmitting the state confirmation command to 2 is the same as the process shown in FIG.

  However, since the illuminance setting by the handset 14-2 is unsuccessful, the status management unit 108 of the base unit 10 instructs with the status of the lighting fixture 16-2 indicated by the response received from the handset 14-2 and the control command. It is detected that the state is different from that in the case (step S30: unsuccessful). Therefore, the communication control unit 106 stores the state confirmation instruction in the storage unit 110 (step S34), and adds 1 to the value of the failure counter by 1 (step S36).

  If the threshold value = 1, then the number of failures 成功 the threshold value is satisfied (step S 38; equal to or greater than the threshold value), and the process proceeds to step S 44.

  The master unit 10 stops the state check operation, and in step S44, the control command saved in the storage unit 110 and the state check command addressed to the slave unit 14-2 are shown in FIG. 12A. The transmission buffer 102 is rewritten as shown in FIG. 12B (step S44). Also, the communication phase is updated. Here, the retransmission of the control command is referred to as the broadcast communication phase F102, and the individual communication phase of the state confirmation command is referred to as F202.

  Subsequently, in the broadcast communication phase F102, the communication control unit 106 of the parent device 10 broadcasts the control command again to all the slave devices 14-1 to 14-m by broadcast communication (step S20). After that, in the individual communication phase F202, the base unit 10 sequentially transmits a state confirmation command to each slave unit 14. However, as for the handset 14-1, it has been confirmed that the status change has succeeded, and the transmission buffer 102 does not store a status confirmation command addressed to the handset 14-1, and therefore, is skipped.

  On the other hand, in the communication system disclosed in Patent Document 1, as shown in FIG. 11, in the same case, even if the response returned from the slave 14-2 indicates that the control is unsuccessful, the remaining children are The transmission of the status confirmation command to the machine 14 and the reception of the response are repeated. Then, after transmitting the state confirmation command to the last handset 14-m and receiving the response from the handset 14-m, the control command is finally retransmitted to the handsets 14-1 to 14-m.

As described above, according to the communication system 1 according to the present embodiment, when the change of the state is unsuccessful in any one of the child devices 14, the control command can be promptly retransmitted, and the control object is appropriately controlled. be able to.
Further, in the above embodiment, the state confirmation command after resending the control command is not resent to the slave 14 that has succeeded in the state change. Therefore, the time required to receive the state confirmation command and the response can be shortened.

(Modification)
In the above embodiment, as shown in FIG. 10, the state confirmation command after resending the control command is not retransmitted to the child device 14 that has succeeded in the state change. However, the state confirmation command may be resent also to the slave 14 that has succeeded in the state change. In this case, for example, in step S32 of FIG. 8, as in step S34, the state confirmation command and the corresponding data may be deleted from the transmission buffer 102 and stored in the storage unit 110. Alternatively, step S32 may be removed and step S34 may be moved to any position of steps S24 to S30.
Also, the threshold value in step S38 can be set as appropriate, and may be an integer of 2 or more.

Second Embodiment
In the first embodiment, the present invention has been described by way of example in which the states of all the lighting fixtures 16 are similarly changed, but the present invention is not limited to this. Only some of the lighting fixtures 16 may be targeted for the state change. In this case, the state confirmation command may be transmitted only to the slave unit 14 that needs the state confirmation.

For example, in the configuration of FIG. 1, it is assumed that the hand control terminal 12 instructs to change only the states of the lighting fixtures 16-1 and 16-m. In this case, the slaves 14-1 and 14-m function as the first slave in the claims.
For example, in step S12 of FIG. 7, as shown in FIG. 13, master device 10 creates a control command instructing control of lighting devices 16-1 and 16-m, and slave devices 14-1 and 14 A state confirmation command for inquiring the states of the lighting fixtures 16-1 and 16-m is created on the basis of -m, and stored in the transmission buffer 102.

Master device 10 transmits a control command to all slave devices 14 by broadcast communication, while transmitting a status confirmation command to slave devices 14-1 and 14-m by individual communication, and receives a response.
With such a configuration, unnecessary communication can be suppressed.

Third Embodiment
Although in the first and second embodiments, the case where only one control command and the corresponding state confirmation command are stored in the transmission buffer 102 has been described as an example, the present invention is not limited to this. The transmission buffer 102 may store a plurality of control instructions and a state confirmation instruction corresponding to each control instruction.

  In such a case, instructions by a plurality of control commands may contradict each other. For example, immediately after the control command to turn off the lighting fixture 16-1 is registered, the control command to set the illuminance of all the lighting fixtures 16 to I is registered.

  In this case, a control command to turn off the luminaire 16-1 is transmitted, and even if it is determined whether the change of the state of the child device 14-1 is successful, the luminaire 16-1 is then turned on. It does not make much sense because it sets the illuminance. Therefore, in such a case, it is also possible to skip acquisition of state information. Hereinafter, an embodiment will be described in which the transmission of the state confirmation instruction to the control instruction transmitted earlier is skipped when the control instruction is overwritten.

  The basic configuration of the communication system 1 according to the present embodiment is the same as the configuration shown in FIG. 1, and the configurations of the master unit 10 and each handset 14 are the same as the configurations shown in FIG. 2 and FIG.

  In the present embodiment, when instructed by hand control terminal 12, communication control unit 106 of base unit 10 executes the transmission buffer registration process shown in FIG. 14 instead of the transmission buffer registration process shown in FIG.

  First, the communication control unit 106 receives the current instruction via the network IF 100 and the communication unit 104, and provides the state management unit 108. The state management unit 108 generates a control command for changing the state of the lighting fixtures 16-1 to 16-m to the instructed state and a state confirmation command based on the received instruction (step S141).

  Next, the state management unit 108 determines whether data is stored in the transmission buffer 102 (step S142).

  If no data is stored in the transmission buffer 102 (step S142: none), the state management unit 108 stores the control instruction and the state confirmation instruction together with related information in the transmission buffer 102 (step S143). On the other hand, when the data is already stored in the transmission buffer 102, among the state confirmation commands for the same slave 14, the one whose transmission order is earlier and the related data are deleted, and the process is ended. In addition, it may be determined whether or not a plurality of control commands contradict to a difference, and if it is discriminated that they contradict, the transmission order may delete the previous one and the related data.

Next, the communication operation in the case where an instruction is registered in the transmission buffer 102 in this manner will be specifically described with reference to FIGS.
Here, in order to facilitate understanding, an instruction to turn off all the lighting devices 16-1 to 16-m is inputted at the hand control terminal 12, and subsequently, a command to light the lighting devices 16-1 and 16-m is It is assumed that it has been input. Also, m = 3.

  Based on an instruction to turn off all the lighting fixtures 16-1 to 16-m from the hand control terminal 12, the state management unit 108 generates a control command and a state confirmation command, as shown in FIG. (Step S141), it registers with the transmission buffer 102 with related data (step S143). The control command instructs the child devices 14-1 to 14-m to turn off the lighting fixtures 16-1 to 16-m. On the other hand, the status confirmation command is to inquire the slaves 14-1 to 14-m of the status in order.

  Thereafter, the communication control unit 106 transmits the control command registered in the transmission buffer 102 to the slaves 14-1 to 14-m by broadcast communication by executing the control process shown in FIG. Thereafter, the communication control unit 106 transmits a state confirmation instruction to the slave 14-1 via individual communication, and receives a response.

At this timing, it is assumed that an instruction to light the luminaires 16-1 and 16-m is input from the hand control terminal 12 to the parent device 10.
Based on the received instruction, as shown in FIG. 15 (b), the state management unit 108 generates a control instruction and a state confirmation instruction addressed to the slaves 14-1 and 14-m (step S141).
Next, the state management unit 108 determines that data is already stored in the transmission buffer 102 (step S142). At this stage, since the control command and the status confirmation command addressed to the slave 14-1 have already been transmitted, data shown in FIG. 15C is stored in the transmission buffer 102.

  Next, the state management unit 108 deletes, to the transmission buffer 102, the state confirmation command addressed to the slave unit 14 identical to the state confirmation instruction generated this time, and adds the control instruction generated this time, the state confirmation instruction, and the corresponding data. It registers (step S144). In this example, the state confirmation command addressed to the slave 14-m overlaps. Therefore, from the data shown in FIG. 15 (c), the status confirmation command addressed to the slave 14-m is deleted, and thereafter, data corresponding to the control command and the status confirmation command shown in FIG. 15 (b) are additionally registered. .

  As a result, as shown in the sequence of FIG. 16, after the communication control unit 106 of the master unit 10 transmits a status confirmation command to the slave unit 14-2 and receives a response, the communication control unit 106 with the slave unit 14-m The individual communication is stopped, and a control command for changing the illuminance of the lighting fixtures 16-1 and 16-m is transmitted to all the slaves 14-1 to 14-m by broadcast communication. Thereafter, the communication control unit 106 transmits a state confirmation command to the slaves 14-1 and 14-m in order by individual communication.

(Modification)
When additionally storing the newly created control command and the status confirmation command in the transmission buffer 102 in step S144 of FIG. 14, as shown in FIG. 17, the status control command is superior to other status confirmation commands. It may be stored in the transmission buffer 102.

Fourth Embodiment
In the communication system 1 shown in FIG. 1, when the state of the lighting fixture 16-2 is switched by the external control terminal 20, the parent device 10 can not directly grasp the change of the state. Therefore, for example, immediately after the master unit 10 transmits a control command for changing the state of the lighting fixture 16-2, the external control terminal 20 switches the state of the lighting fixture 16-2 and thereafter, the master unit 10 When the state confirmation command is transmitted, the parent device 10 determines that the control is unsuccessful, and resends the control command.

  Therefore, in the present embodiment, the communication control unit 142 of each slave unit 14 uses data indicating the change content of the state of the lighting fixture 16 as a flag when the change of the state by the external control terminal 20 is set. , In addition to the response to the status confirmation command to send.

  The operation when the communication control unit 142 of the slave unit 14 receives a control command or a state confirmation command from the master unit 10 in the present embodiment will be described with reference to the flowchart of FIG.

When receiving an instruction to set the state of the lighting device 16 from the external control terminal 20, the command analysis unit 144 of the slave unit 14 starts the control process shown in FIG. 18 and first analyzes the content of the instruction (step S180) ).
Subsequently, the command analysis unit 144 controls the lighting device 16 through the lighting device control unit 148 based on the content of the analyzed command, and changes the state to the instructed state (step S182).
Subsequently, the command analysis unit 144 turns on a flag indicating the content of the change (step S184), and ends the current process.

On the other hand, when the communication control unit 142 of the slave unit 14 receives a control command or a state confirmation command from the master unit 10, it starts command response processing shown in FIG.
First, the communication control unit 142 takes in the supplied instruction (step S190), and supplies the instruction to the instruction analysis unit 144 (step S192).

The command analysis unit 144 determines whether the received command is a control command or a state confirmation command (step S194).
When the command analysis unit 144 determines that the received command is a control command (step S194: control command), the command analysis unit 144 determines whether it is necessary to change the state of the luminaire 16 connected thereto (step S196). .

If it is determined that control is unnecessary (step S 196: unnecessary), the command analysis unit 144 ends the current process.
On the other hand, if it is determined that control is necessary (step S196: required), the command analysis unit 144 controls the lighting device control unit 148 to change the state of the lighting device 16 connected to itself (step S198). ).
Subsequently, the command analysis unit 144 turns off the external control flag stored therein (step S200), and ends the current process.

  On the other hand, when the command analysis unit 144 determines that the received command is the status confirmation command in step S194 (step S194: status confirmation command), it controls the lighting device control unit 148 to indicate the status of the lighting device 16. Information is extracted, the state detection unit 146 detects the state, and generates a response (step S202).

Subsequently, the command analysis unit 144 determines whether the external control flag is on (step S204). If the external control flag is off (step S204: off), the process jumps to step S210 described later.
On the other hand, if the external control flag is on (step S204: on), that is, there is a change in the state of the lighting fixture 16 by the external control terminal 20 from the reception of the control command to the present, and the external control flag is on in step S184. If yes, the command analysis unit 144 adds an external control flag to the response, and supplies the response to the communication control unit 142 (step S206). Subsequently, the command analysis unit 144 turns off the external control flag (step S208).
Subsequently, the communication control unit 142 transmits a response to the base unit 10 (step S210).

  Communication control section 106 of master unit 10 receiving the response to which the external control flag is attached causes a contradiction between the control command transmitted to slave unit 14 by broadcast communication and the state of lighting fixture 16 indicated by the response. Even in step S30 of FIG. 8, it is determined that the control is successful.

Hereinafter, the overall operation of the communication system 1 according to the present embodiment will be described based on a specific example.
As a premise, as shown in FIG. 20, in the broadcast communication phase F100, the master unit 10 transmits a control command by broadcast communication, and the slave units 14-1 to 14-m transmit the lighting fixture 16 according to the control command. Is successful in controlling the Furthermore, after that, in the individual communication phase F200, while the master unit 10 transmits a status confirmation command to the slave unit 14-1 and receives the response, the external control terminal 20 sends the slave unit 14-2 It is assumed that an instruction to change the state of the lighting fixture 16-2 is input.

  In this case, the child device 14-2 controls the lighting fixture 16-2 according to the instruction (step S182), and turns on the external control flag (step S184).

Thereafter, the communication control unit 106 of the parent device 10 transmits a state confirmation command to the slave device 14-2 by individual communication, and obtains a response with a flag from the slave device 14-2. In this case, since the external control flag is added to the communication control unit 106 of the base unit 10, is there a contradiction between the state instructed by the transmitted control command and the state of the lighting fixture 16-2 indicated by the response? It is determined that control by the control command is successful regardless of whether or not it is.
Therefore, the state confirmation command is transmitted to the slave 14-m without retransmitting the control command.

  As described above, according to this configuration, even when the lighting device 16 is individually controlled by the external control terminal 20, the process can be continued without unnecessarily retransmitting the control command.

[Modification]
As mentioned above, although embodiment of this invention was described, this invention is not limited to these, A various deformation | transformation and application are possible.
For example, the components of the communication system can be appropriately modified as long as the operation of the communication system is not abnormal and inconsistent.

  Further, the format of data stored in the transmission buffer 102 and the storage unit 110 is arbitrary as long as the same function and operation as described above can be realized. For example, as shown in FIG. 21, data indicating the start and end of the individual communication phase may be further stored.

The parent device 10 itself may control the lighting device 16.
Moreover, a control target object is not limited to a lighting fixture, An air conditioner, an acoustic apparatus, etc. are arbitrary. Also, the control object is not limited to the same type of device, and different types of devices may be included.

  The components of the communication system 1 described above can be combined or modified within the range in which the operations do not contradict each other without causing an abnormality in the operation of the communication system.

  Further, when data is not input from the parent device 10, the input / output unit 200 of the hand control terminal 12 shown in FIG. 5 may include only the input device and may not include the display device. Similarly, the input / output unit 200 of the external control terminal 20 may include only the input device and may not include the display device. In addition, the hand control terminal 12 and the external control terminal 20 may not be wall switches and a remote controller as long as they are terminals for causing a state change of the lighting fixture 16 like a schedule control terminal. The order of the individual communication may be another predetermined order or an order determined randomly each time the individual communication to the slave 14 does not overlap in the individual communication phase.

  Although the transmission buffer 102 and the storage unit 110 are shown as separate devices, a control instruction and a status confirmation instruction are stored in one storage device, and data functions as data stored in the transmission buffer using flags etc. It may indicate whether the data functions as data stored in the storage unit.

Reference Signs List 1 communication system, 10 master unit, 100 network IF, 102 transmission buffer, 104 communication unit, 106 communication control unit, 108 state management unit, 110 storage unit, 12 hand control terminal, 14 slave units, 140 control command execution unit, 144 Command analysis unit, 146 status detection unit, 148 lighting fixture control unit, 16 lighting fixtures, 18 lighting devices, 20 external control terminals, 22 networks, 24 arithmetic processing unit

Claims (14)

A communication system comprising a master unit and a plurality of slave units each having a control target connected thereto, the control target being connected to each slave unit,
The parent machine is
A control command for changing the state of the control target is transmitted to the plurality of slaves by broadcast, and subsequently, a response indicating the state of the control target connected to the plurality of slaves is sent to the plurality of slaves Transmitting a state confirmation command for transmitting the individual communication through the individual communication, and the plurality of slaves receive the response transmitted according to the state confirmation instruction through the individual communication,
Based on the control command transmitted by broadcast communication and the response received by individual communication from the plurality of slave units, it is determined whether the slave unit has succeeded in changing the state indicated by the control command. ,
When it is determined that the change of the status is unsuccessful, the transmission of the status confirmation command in the individual communication is interrupted, and the control command is retransmitted to the plurality of slaves by broadcast, and The state confirmation command is sequentially transmitted by individual communication, and responses are received by individual communication from the plurality of handsets,
The slave unit is
The control command transmitted by broadcast communication is received from the master unit, and the control target is controlled in accordance with the control command,
Receiving a status confirmation command transmitted by individual communication from the master, generating a response indicating the status of a control target connected to the self, and transmitting the response to the master;
Communications system. The parent machine is
A communication control unit that generates a control command and a state confirmation command and transmits the control command and the status check command to the slave unit and receives a response from the slave unit;
A determination unit that determines whether the child device has succeeded in the control indicated by the control instruction from the state indicated by the transmitted control instruction and the state indicated by the received response;
Equipped with
The communication control unit
When the determination unit determines that the change of the state is unsuccessful, the transmission of the state confirmation command is interrupted, and the control command is retransmitted to the plurality of handsets by broadcast communication, and then the state The confirmation command is sequentially transmitted by the individual communication, and the response is received by the individual communication from the plurality of handsets.
The communication system according to claim 1. The base unit includes a first storage unit and a second storage unit.
The communication control unit
Receiving a control instruction for the control object, generating a control instruction and a state confirmation instruction according to the instruction, and storing the generated control instruction and the state confirmation instruction in the first storage unit;
Sequentially reading out and transmitting the control command and the state confirmation command stored in the first storage unit;
Storing the transmitted control command and the state confirmation command in the second storage unit;
When the determination unit determines that the change of the state is unsuccessful, the control instruction and the state confirmation instruction stored in the second storage unit are written in the first storage unit.
The communication system according to claim 2. The communication control unit does not write in the first storage unit a state confirmation command addressed to a child device that has succeeded in changing the state.
The communication system according to claim 3. The communication control unit
When at least one of a control command and a status check command is recorded, when writing a newly generated control command and a status check command in the first storage unit,
When there are a plurality of status confirmation commands for the same slave unit, only one status confirmation command is written to the first storage unit.
The communication system according to claim 3 or 4. When the communication control unit writes the newly generated control instruction and the state confirmation instruction in the first storage unit in a state where the state confirmation instruction is recorded, the control instruction is ranked first in transmission. Write to
The communication system according to any one of claims 3 to 5. When the master transmits a control command to change only the state of the control target connected to the first slave among the plurality of slaves, the master checks only the first slave Send a command,
The communication system according to any one of claims 1 to 6. The parent machine is
When the state indicated by the transmitted control command is different from the state of the control object indicated by the response received from the child device, it is determined that the change of the state of the control object is unsuccessful.
The communication system according to any one of claims 1 to 7. And a pointing device connected to a second slave among the plurality of slaves and instructing the second slave to change the state of the control object,
The second slave controls the control target based on an instruction from the instruction device,
The second slave device adds, to the response, data indicating that the state of the control object has been changed, in accordance with an instruction from the instruction device, and transmits the data to the master device.
The communication system according to any one of claims 1 to 8. The parent machine is
Based on the control command transmitted by broadcast communication and the response received by individual communication from the plurality of slave units, it is determined whether the slave unit has succeeded in changing the state indicated by the control command. ,
The number of handsets whose status change has been unsuccessful is counted, and when the count value becomes equal to or greater than a threshold, transmission of the status confirmation command in individual communication is interrupted, and the control command is Re-send to slave units via broadcast,
The communication system according to any one of claims 1 to 9. The control object is a lighting fixture,
The communication system according to any one of claims 1 to 10. The state of the object to be controlled includes one or more of lighting and extinguishing of the lighting fixture, illuminance of the lighting fixture, the number of light emitters to be lit in the lighting fixture, and designation of the light emitter to be illuminated in the lighting fixture At least including
The communication system according to claim 11. A control device for controlling an object to be controlled through a plurality of slave units,
A control command for changing the state of the control target is transmitted to the plurality of slaves by broadcast, and subsequently, a response indicating the state of the control target connected to the plurality of slaves is sent to the plurality of slaves A communication control unit that transmits a state confirmation command for transmitting the individual communication by an individual communication, and the plurality of slaves receive the response transmitted according to the state confirmation instruction by an individual communication;
A determination unit that determines whether or not the child device has succeeded in the control indicated by the control command, based on the transmitted control command and responses received from the plurality of child devices;
Equipped with
The communication control unit interrupts the transmission of the state confirmation command in the individual communication when the judgment unit judges that the change of the state is unsuccessful, and the control command is sent to the plurality of slave units. Re-send by information communication, then sequentially transmit a status confirmation command to the slaves by individual communication, and receive responses from the plurality of slaves by individual communication.
Control device. A control device connected to a control object and controlling a control object connected to the self according to a control command and a state confirmation command from a host device,
Receiving a control command for changing the state of the control object by broadcast communication, and controlling the control object connected to the self according to the received control command,
Receives a status confirmation command addressed to itself for the status of the control object addressed to itself via individual communication, and generates a response indicating the status of the control target connected to itself according to the received status confirmation command, and uses the individual communication Send to the host device,
Control the controlled object connected to itself in accordance with an instruction from the control terminal connected to it,
The response includes information indicating that control has been executed according to an instruction from the control terminal.
Control device.

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