JP2007162241A - Control system for electric opening/closing equipment - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a control system which controls an electric blind by establishing communication between a central control unit and a plurality of blind control units via a floor control unit, which can smoothly change programs for the many floor control units, and which can prevent the new and old programs from being mixed together in the change of the program. <P>SOLUTION: When the new program for control is distributed to each of the floor control units 2 from a program distributing means of the central control unit 1, a program receiving means of the floor control unit 2 makes the new program stored in the floor control unit 2, and transmits a reception response 52c to the central control unit 1. When a program execution command means of the central control unit 1 transmits an execution command 54c to each of the floor control unit 2, a program switching means of the floor control unit 2 switches the new program to a program to be executed. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a control system for an electric switchgear such as a horizontal blind, a roll screen, a curtain, and a shutter that is electrically operated, and more particularly to open and close a large number of electric switchgears set on a window surface of a high-rise building or the like. The present invention relates to a control system for an electric switchgear suitable for a control system for controlling the motor.

  In general, this type of electric switchgear control system controls the electric switchgear by communicating with the central controller and the plurality of switchgear control devices via the floor controller. Programs for executing the control system are stored in the central control device, the floor control device, and the open / close control device, respectively.

  Conventionally, when changing such a program, it is possible to replace the parts of the memory in the device where the program is stored, go to a place of each device, remove the case of the device and replace the part is doing.

  However, security has been strengthened in recent office buildings, etc., and the entrance to each floor is strictly controlled, so permission to enter and exit is required before going to a location where each device is located and performing actual work. Result in spending a lot of time.

  On the other hand, in Patent Document 1, the switchgear control unit has a communication unit for communicating with an external device, and one or more control programs are transmitted from the external device to the switchgear control unit via the communication unit. And is downloaded to the storage area. The switchgear control unit is first model specifying information for specifying a model of an electric switchgear given from one or more control programs different for each model for driving and controlling the drive unit written in the storage area in advance. Is selected, and the drive unit is driven and controlled according to the selected control program.

  In this patent document 1, since the control program is downloaded from the external device, there is an advantage that the trouble in changing the program is reduced, but the control program downloaded from the external device is the blind control device. If the control program corresponds to the model to be controlled, the downloaded control program is immediately executed.

Japanese Patent No. 3537691

  That is, since the switching to the new control program is carried out immediately from the device where the program has been downloaded, the newly changed program is not updated until the program download / rewrite to all devices is completed. A device that executes and a device that executes an old current program are mixed. Due to the difference in functions between the new program and the old program, for example, if the contents sent from each device to the central control unit are different in the two programs, the central control unit will not be able to respond appropriately. There's a problem.

  Moreover, in patent document 1, the update of the program of the floor control apparatus which relays between a central control apparatus and a some switching apparatus control part is not considered at all.

  The present invention has been made in order to solve the above-described problems. The object of the present invention is to make it possible to smoothly change a program for a plurality of floor control devices and to change the program. It is to provide a control system for an electric switchgear that can prevent mixing of old and new programs.

In order to achieve the above-mentioned object, the invention according to claim 1 is provided with a plurality of floor control devices that relay between a central control device and a plurality of opening / closing control devices, and executes a control program. In the control system of the electric switchgear that controls the electric switchgear by communicating between the central controller and the plurality of switchgear control devices via the device,
Each floor control device stores the control program currently in use,
The central control device is provided with a program distribution means for distributing a new control program from the central control device to a plurality of floor control devices,
Each floor control device is provided with program receiving means for receiving the distributed new program and storing it in the floor control device,
The central control device is provided with a program execution command means for outputting an execution command for causing each floor control device to execute a new program,
Each floor control device is provided with a program switching means for switching as a program for executing a new program in response to the execution command.

  The invention described in claim 2 is characterized in that the program receiving means described in claim 1 transmits a receipt response to the central control unit when a new program is normally received.

  The invention according to claim 3 is characterized in that the program execution command means according to claim 2 transmits an execution command to the floor control device after receiving receipt responses from all floor control devices that have distributed the new program. And

  According to a fourth aspect of the present invention, there is provided the storage medium according to any one of the first to third aspects, wherein the floor control device stores a storage area for storing a currently used program and a second received new program. And a storage area.

  The invention according to claim 5 is characterized in that the program switching means according to claim 4 stops the currently used program and starts execution of a new program.

  The invention described in claim 6 is characterized in that the program switching means described in claim 4 stores a new program stored in the second storage area in the storage area.

  A seventh aspect of the invention is characterized in that the program distribution means according to any one of the first to sixth aspects distributes a new program to all the floor control devices simultaneously.

  The invention according to claim 8 is characterized in that the program distribution means according to any one of claims 1 to 6 sequentially distributes a program to a plurality of floor control devices to which a new program is to be distributed.

  A ninth aspect of the invention is characterized in that the program execution command means according to any one of the first to eighth aspects transmits an execution command to all the floor control devices simultaneously.

  The invention described in claim 10 is characterized in that the program execution command means according to any one of claims 1 to 8 sequentially transmits an execution command to a plurality of floor control devices to be changed to a new program. To do.

  According to the present invention, by distributing the program from the central control device to the floor control device, the program can be changed smoothly without going to each floor. In each floor control device, the execution of the new program is not started until the execution command is output from the program execution command means, thereby preventing the programs to be executed in the plurality of floor control devices from being mixed. Can do.

  According to the second aspect of the present invention, when the program receiving means of the floor control device transmits a receipt response to the central control device, the central control device side surely distributes a new program to the floor control device to be distributed. Can be confirmed.

  According to the third aspect of the present invention, since it is possible to switch to the new program after it has been confirmed that all the programs have been distributed to the floor control device to which the new program is to be distributed, it is possible to reliably prevent mixing of new and old programs. be able to.

  According to the invention described in claim 4, the current program and the new program can be stored side by side.

  According to the invention described in claim 5, the program to be executed can be switched reliably from the current program to the new program.

  According to the sixth aspect of the present invention, the program to be executed can be switched reliably from the current program to the new program, and the same processing can be performed when the next new program is distributed.

  According to the seventh aspect of the present invention, it is possible to shorten the processing time for distribution by distributing new programs to all the floor control devices at once.

  According to the eighth aspect of the invention, a new program is distributed to a plurality of floor control devices sequentially, so that it is possible to flexibly cope with a case where the program is updated only to some of the floor control devices.

  According to invention of Claim 9, the processing time for an execution command can be shortened by transmitting an execution command to all the floor control apparatuses simultaneously.

  According to the tenth aspect of the present invention, it is possible to flexibly cope with a case where the program is updated only to some of the floor control devices by sequentially transmitting the execution command to the plurality of floor control devices.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 shows an example of the overall configuration of an electric switchgear control system according to the present invention.

  The central control device 1 and a plurality of floor control devices 2 are connected by a main bus 5, and the floor control device 2 and a plurality of blind control devices (opening / closing control devices) 3 are connected by a floor bus 6. The floor control device 2 is equivalent to one on each floor of the building and is installed in N units (for example, a maximum of 127 units) in total, and the blind control device 3 is installed in M units (for example, a maximum of 255 units) on each floor. Therefore, the blind control device 3 is a large-scale system capable of installing a maximum of N × M units (for example, 32,385 units). The blind control device 3 corresponds to each electric blind 4 or a blind group that performs the same operation. The blind control device 3 sends a drive signal of a driving device such as a motor for operating each electric blind 4 and is provided in the electric blind 4. A signal representing the open / closed state of the electric blind (for example, elevation height, rotation angle) is received from the encoder. The central control device 1 and the plurality of blind control devices 3 communicate with each other using the floor control device 2 as a relay device, and a control command is issued from the central control device 1 to the blind control device 3 via the floor control device 2. The opening / closing control of the electric blind 4 is performed.

  The electric blind 4 can be any electric opening / closing device such as a horizontal blind, a roll screen, a curtain, and a shutter. Each electric blind 4 or each blind group can be individually controlled to open and close by the hand controller 7. In this case, a signal is transmitted between the hand controller 7 and the blind control device 3 through a wireless or wired communication line. Can be sent and received.

FIG. 2 is a block diagram of the control system of FIG.
The central control device 1 includes a CPU 101, a memory 102, and an I / O 103 that inputs and outputs signals with the floor control device 2 via the main bus 5.

  Further, the floor control device 2 has a CPU 121, a memory 122, an I / O 123 that inputs and outputs signals from the central control device 1 through the main bus 5, and a signal from the blind control device 3 through the floor bus 6. I / O 124 for inputting / outputting.

  The blind control device 3 includes a CPU 131, a memory 132, and an I / O 133 that inputs and outputs signals to and from the floor control device 2 through the floor bus 6.

  The CPU 101 of the central control device 1 executes automatic control execution processing for the electric blind 4, and for that purpose, a control program P1 for causing the central control device 1 to function as the automatic control execution processing means 200 is stored in the memory 102. The The automatic control execution processing means 200 includes other sequences such as a monitoring sequence 201, an opening / closing control sequence 203, a response collection sequence 204, and a setting sequence 205, and the program P1 includes a plurality of programs including subroutines.

  Similarly, the CPU 121 of each floor control device 2 executes automatic control execution processing for the electric blind 4, and for that purpose, a control program P <b> 2 for causing the floor control device 2 to function as the automatic control execution means 220 is stored in the memory 122. Stored in Similar to the automatic control execution processing unit 200, the automatic control execution unit 220 includes a monitoring sequence, an opening / closing control sequence, a storage sequence, a setting sequence, and the like in addition to the notification sequence 208, and the program P2 includes a plurality of subroutines. Can consist of programs.

  Further, the CPU 131 of each blind control device 3 executes automatic control execution processing for the electric blind 4, and for this purpose, a program P 3 for causing the blind control device 3 to function as automatic control execution means 240 is stored in the memory 132. . The program P3 can be composed of a plurality of programs including subroutines.

  The start timing of the sequence executed by the central controller 1 by the program P1 is controlled according to, for example, the schedule shown in FIG. These sequences are sequences for automatic control, but are not necessarily limited to this, and depending on the system, there are necessary functions and unnecessary functions. Since new functions may be added, the program needs to be updated in a timely manner.

  The main operation contents of each sequence of the automatic control execution process defined by the above program will be exemplified below.

  Of the sequences provided in the central controller 1, the open / close control sequence 203, response collection sequence 204, and setting sequence 205 roughly comprise data link establishment, information transfer, and data link termination, as shown in FIGS. 3A and 3B. As shown in FIG. 3C, the monitoring sequence 201 executes a sequence including data link establishment and data link termination.

  The establishment of the data link from the central control device 1 to the floor control device 2 is a command for confirming whether or not the destination floor control device 2 can currently respond correctly because the request command 21 is transmitted from the central control device 1. is there. On the other hand, when the floor control device 2 has correctly received the request command 21, an affirmative response 22 is issued. Thereby, a data link is established.

  Next, when the data link is established, the central controller 1 transmits a command signal 10 that is one of a control command, a setting command, and a status call command. The distinction between a control command, a setting command, and a status call command is determined by the contents of the included data. FIG. 3A shows a case where a control command 11c or a setting command is transmitted from the central controller 1 as the command signal 10. When the floor control device 2 correctly receives the control command or the setting command, an affirmative response 22 is issued. It is. FIG. 3B shows a case where a status call command 14 c is transmitted from the central control device 1 as the command signal 10, and an operation response 12 c is issued from the floor control device 2.

  When the positive response 22 or the operation response 12c from the floor control device 2 is correctly received by the central control device 1 and the transfer of information is completed, the data link is terminated. Specifically, a termination command 23 is issued from the central controller 1. If the data link is not established once, a retry is performed. If the data link cannot be established even after a predetermined number of times, it is determined that the data link has not been established, and the central controller 1 determines the termination command 23. Send.

  FIG. 3C represents the sequence of the monitoring sequence 201. As described above, the monitoring sequence 201 performs only data link establishment and data link termination, constantly checks the status of the main bus 5 and the floor control device 2 during idle time when the blind 4 is not controlled, and transmits and receives signals correctly. I have confirmed that I can do it. In the sequence of FIG. 5, this monitoring sequence 201 indicates that monitoring is always performed at regular intervals when other sequences are not processed.

  The opening / closing control sequence and the setting sequence executed by the floor control device 2 that receives the command signal 10 from the central control device 1 are the same as the central control device 1 and the data link establishment and information between the blind control device 3 and the information. A sequence consisting of transfer and data link termination is executed. That is, as shown in FIG. 4, in the information transfer, the control command 11 is transmitted from the floor control device 2 that has received the control command of the command signal 10 from the central control device 1 to the blind control device 3, When the blind control device 3 correctly receives this command, the blind control device 3 transmits an operation response 12 indicating that it has responded.

  With reference to FIG. 6, the processing of the opening / closing control sequence and the sequence related thereto will be described in more detail. The opening / closing control sequence 203 is started at a fixed time, and the central control device 1 controls the opening / closing of each electric blind 4. To do so, a control command 11c is transmitted to the floor control device 2. The control command 11c includes a floor address, group number data, and a signal indicating the control opening / closing degree. The group number is a number for identifying the minimum unit for performing the same opening / closing operation in the electric blinds 4 belonging to the same floor. When the minimum unit is one electric blind, it becomes a blind address, and the blind control device 3 and / or This is a number for identifying the electric blind 4.

  When the opening / closing control sequence 203 is activated and the control command 11c is transmitted from the central control device 1 to the floor control device 2, the opening / closing control sequence of the floor control device 2 corresponding to the floor address included in the control command 11c is subsequently generated. Upon activation, a control command 11 is transmitted from the floor control device 2 to the blind control device 3. Information included in the control command 11 includes a group number and information indicating the command opening / closing degree.

  In this way, the blind control device 3 drives the driving means of the electric blind 4 based on the control command 11 from the floor control device 2, and causes the electric blind 4 to perform an opening / closing operation.

  When normal, the blind control device 3 returns an operation response 12 to the control command 11 from the floor control device 2 as a response in a state where the operation has started. When the floor control device 2 receives the operation response 12, the floor control device 2 stores the information included in the operation response 12 in the corresponding storage area of the memory 122 of the floor control device 2. At this time, the information related to the electric blind 4 included in the operation response 12 includes the corresponding group number and information on the degree of opening / closing indicating the actual degree of opening / closing of the electric blind 4 at that time.

  The response collection sequence 204 is a sequence that is executed after the response waiting time has elapsed after the opening / closing control sequence 203 is executed, and transmits a status call command 14 c from the central control device 1 to the floor control device 2. In response to this, the floor control device 2 transmits to the central control device 1 an operation response 12c using information stored in the memory 122 as data. Thus, the central controller 1 can confirm the response to the control command 11c.

  When the operation is completed, the blind control device 3 transmits an operation response 15 to the floor control device 2 as a response indicating the state in which the operation is completed. When receiving the operation response 15, the floor control device 2 stores the information included in the operation response 15 in the corresponding storage area of the memory 122 of the floor control device 2. At this time, the data included in the operation response 15 includes the group number and information on the degree of opening / closing indicating the actual degree of opening / closing of the electric blind 4 at that time.

  Furthermore, in addition to operating the electric blind 4 according to a control command from the central controller 1, the electric blind 4 may be operated according to a control command from the hand controller 7. In this case, the blind control device 3 that has received the control signal from the hand controller 7 drives the driving means of the electric blind 4 based on the control command, and causes the electric blind 4 to perform an opening / closing operation. Also in this case, the operation response 16 is transmitted to the floor control device 2 as a response of the operation start and / or operation end state. When receiving the operation response 16, the floor control device 2 stores the information included in the operation response 16 in the corresponding storage area of the memory 122 of the floor control device 2. At this time, the data included in the operation response 16 includes the group number and information on the degree of opening / closing indicating the actual degree of opening / closing of the electric blind 4 at that time.

  When the operation response 15 or 16 is received, the notification sequence 208 of the floor control device 2 transmits a notification command 17c to the central control device 1 and establishes a data link in response to the positive response 22c from the central control device 1. Thereafter, the operation response 15 c and the operation response 16 c are transmitted to the central controller 1.

  When changing the control program that defines the processing as described above, in order to change the program P2 in the floor control device 2 in particular, the program distribution means 210 and the program for distributing the program to the central control device 1 A program P11 for functioning as the program execution command means 212 for commanding switching is stored in the memory 102.

  In each floor control device 2, each floor control device 2 functions as a program receiving unit 230 that receives a new program P2 ′ distributed by the program distribution unit 210 and a program switching unit 232 that switches to the new program P2 ′. The program P21 for causing this to be stored is stored in the storage area 122-0 of the memory 122. The program receiving unit 230 stores the new program P2 'in a storage area 122-2 different from the storage area 122-1 of the memory 122 of the program P2.

As a procedure for updating the program P2, the procedures shown in FIGS. 7 and 8 can be considered.
In the case of distribution according to the procedure of FIG. 7, the program distribution unit 210 transmits a program distribution command 51c including the new program P2 ′ as data to each floor control device 2. In this case, the program distribution command 51c is sequentially transmitted while designating the floor address corresponding to each floor control device 2 one by one. Next, the program receiving means 230 of each floor control device 2 to which the new program P2 ′ has been distributed transmits a reception response 52c to the central control device 1. When the central control device 1 receives the receipt responses 52c from all the floor control devices 2 to which the program has been distributed, the program execution command means 212 designates the address of each floor control device 2 one by one, and the program execution command 54c. Are sent sequentially. The program switching means 232 of each floor control device 2 switches the program to be executed to a new program and transmits a start response 55c to the central control device 1.

  In the case of distribution according to the procedure of FIG. 8, the program distribution means 210 transmits all the floor control devices 2 and transmits a program distribution command 53c including a new program P2 'as data. Then, the program receiving means 230 of each floor control device 2 transmits a receipt response 52c toward the central control device 1. The reception response 52c may be issued simultaneously from a plurality of floor control devices 2, but as with the notification sequence 208, since a signal is transmitted after the data link is established, all floors are not interfered. The receipt response 52c from the control device 2 finally reaches the central control device 1 with certainty. When the central control device 1 receives the receipt responses 52c from all the floor control devices 2 to which the program has been distributed, the program execution command means 212 designates all the floor control devices 2 and transmits the program execution command 56c all at once. . The program switching means 232 of each floor control device 2 switches the program to be executed to a new program and transmits a start response 55c to the central control device 1.

  The procedure in FIG. 7 is effective when only one or more specific floor control devices 2 need to be changed, and the procedure in FIG. 8 is effective when it is desired to shorten the overall processing time. It is preferable that the program distribution means 210 can be distributed by any method according to a selection command input to the central control device 1.

  FIG. 9 is a flowchart showing processing by the program distribution unit 210 and the program execution command unit 212 of the central control device 1. In the central control device 1, a new program P2 'and a floor address of the floor control device 2 to which the program is to be distributed are set in advance.

  When the program distribution unit 210 transmits the program distribution instructions 51c and 53c and distributes the new distribution program P2 ′ (S12), has the reception response 52c from the floor control device 2 to be distributed been received within a predetermined time? It is determined whether or not (S14). If not all have been received, the program is redistributed to the floor control device 2 that has not transmitted the receipt response 52c (S16). Thus, when all the reception responses 52c from the floor control device 2 to be distributed are received, the program execution command means 212 transmits the program execution command 54c or 56c (S18). Then, it is determined whether all start responses 55c have been received within a predetermined time (S20). If not received all, the program execution command is retransmitted to the floor control device 2 that has not transmitted the start response 55c (S22).

  FIG. 10 is a flowchart showing processing by the program receiving unit 230 and the program switching unit 232 of the floor control device 2.

  When receiving the new distribution program (P2 ') (S112), the program receiving unit 230 determines whether there is any data error (S114). If there is an error in the data, the process returns to step S112 and waits for the delivery program to be sent again. If there is no error in the data, a receipt response 52c is transmitted (S116). Then, the new program P2 'is stored in the storage area 122-2 of the memory 122 (S118).

  Next, when the program switching means 232 receives the program execution command 54c or 56c (S120), the program switching means 232 stops the currently operating program P2 (S122) and replaces the program (S124). As the replacement work, the current program P2 stored in the storage area 122-1 is erased and a new program P2 ′ stored in the storage area 122-2 is written into the storage area 122-1, or the CPU When performing the control process, the storage area to be read is changed to 122-2 if it is currently 122-1 and changed to 122-1 if it is currently 122-2. Then, the program P2 'is read by the CPU and executed (S126), and a start response 55c is transmitted (S128).

  7 and 8, the new program P2 'is not executed until the program execution command from the program execution command means 212 of the central control device 1 is received by the floor control device 2, and the memory The program execution command from the program execution command means 212 is executed because it is issued after receiving receipt responses from all the floor control devices 2 to be changed. By avoiding a state in which the program is mixed, the floor control devices 2 to which the program is to be changed can simultaneously operate the new program.

  As a result, depending on the contents of the change of the program, a problem may occur even when the content transmitted by the floor control device 2 to the central control device 1 changes between the current program and the changed program due to different functions. Can be prevented.

1 is an example of the overall configuration of a control system for an electric switchgear according to an embodiment of the present invention. It is a block diagram of the control system of FIG. This is a transmission / reception sequence when a control command or a setting command is transmitted from the central control device to the floor control device by an opening / closing control sequence or a setting sequence. This is a transmission / reception sequence when a status call command is transmitted from the central control device to the floor control device by the response collection sequence. This is a transmission / reception sequence based on a monitoring sequence. This is a transmission / reception sequence when a control command or a setting command is transmitted from the floor control device to the blind control device by the opening / closing control sequence. It is a figure showing the flow of each sequence of an automatic control execution means. This is a transmission / reception sequence performed between the central control device and a plurality of blind control devices using the floor control device as a relay device. This is a transmission / reception sequence when a program is distributed from the central control unit to the floor control unit. FIG. 8 is a transmission / reception sequence different from that in FIG. 7 when a program is distributed from the central control device to the floor control device. It is a flowchart showing the process by the program delivery means and program execution command means of a central control unit. It is a flowchart showing the process by the program receiving means and program switching means of a floor control apparatus.

Explanation of symbols

1 Central control device 2 Floor control device 3 Blind control device (opening / closing control device)
4 Electric blinds (Electric switchgear)
P2 Current program P2 'New program 52c Receipt response 54c, 56c Execution command 122-1 Storage area 122-2 Second storage area 210 Program distribution means 212 Program execution command means 230 Program reception means 232 Program switching means

Claims (10)

A plurality of floor control devices (2) that relay between the central control device (1) and the plurality of opening / closing control devices (3) are provided, and the central control device (2) that executes a control program is provided via the center. In the control system of the electric switchgear that controls the electric switchgear (4) by communicating between the control device (1) and the plurality of switchgear control devices (3),
Each floor control device (2) stores a control program (P2) currently in use,
The central control device (1) is provided with a program distribution means (210) for distributing a new control program (P2 ′) from the central control device (1) to a plurality of floor control devices (2).
Each floor control device (2) is provided with a program receiving means (230) for receiving the distributed new program (P2 ′) and storing it in the floor control device (2),
The central control device (1) is provided with a program execution command means (212) for outputting an execution command (54c, 56c) for causing each floor control device (2) to execute a new program (P2 ′).
Each floor control device (2) is provided with a program switching means (232) for switching as a program for executing a new program (P2 ′) in response to the execution command (54c, 56c).
An electric switchgear control system characterized by the above.   2. The electric switchgear according to claim 1, wherein the program receiving means (230) transmits a receipt response (52 c) to the central controller (1) when the new program (P 2 ′) is normally received. Control system.   The program execution command means (212) receives the reception response (52c) from all floor control devices (2) that have delivered the new program (P2 ′), and then sends the execution commands (54c, 56c) to the floor control device ( The control system for an electric switchgear according to claim 2, wherein the control system is transmitted to (2).   The floor control device (2) includes a storage area (122-1) for storing the currently used program (P2), and a second storage area (122-2) for storing the received new program (P2 ′). The control system for an electric switchgear according to any one of claims 1 to 3, wherein the control system is provided.   5. The control system for an electric switchgear according to claim 4, wherein the program switching means (232) stops the currently used program (P2) and starts execution of a new program (P2 ').   The program switching means (232) stores the new program (P2 ') stored in the second storage area (122-2) in the storage area (122-1). Control system for electric switchgear.   The electric switchgear according to any one of claims 1 to 6, wherein the program distribution means (210) distributes a new program (P2 ') to all the floor control devices (2) simultaneously. Control system.   The program distribution means (210) sequentially distributes a program (P2 ') to a plurality of floor control devices (2) to which a new program (P2') is to be distributed. The control system for an electric switchgear according to item 1.   The electric switchgear according to any one of claims 1 to 8, wherein the program execution command means (212) transmits an execution command (56c) to all the floor control devices (2) simultaneously. Control system.   9. The program execution command means (212) sequentially transmits an execution command (54c) to a plurality of floor control devices (2) to be changed to a new program (P2 ′). A control system for an electric switchgear according to claim 1.

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