JPH0784935B2 - Operation control device for air conditioner - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to an operation control device for an air conditioner including a plurality of air conditioning units, and particularly to address setting measures.

(Prior Art) Generally, in an air conditioner, as disclosed in JP-A-62-105594, a plurality of air conditioning units are divided into a plurality of groups, and one of the air conditioning units of each group is divided into a plurality of groups.
There is a configuration in which a base unit is set as a master unit and the other units are set as slave units, and a central controller is connected to the master unit, while a remote controller is connected to the air conditioning units of each group. Then, the group address and the unit address are set in the centralized controller, and the group address and the unit address of the air conditioning unit are set respectively, and the respective air conditioning units have the same address among the data transmitted by the centralized controller and the remote controller. It is configured to take in only the things and operate based on the data.

(Problems to be Solved by the Invention) In the above-described air conditioner, the address setting is input to the microcomputer by the operation switches of the centralized controller and the air conditioning unit.

However, in this case, there is a problem that the operator has to manually input the time when installing the air conditioning unit, which is troublesome. In addition, the address may be set incorrectly, for example, the same address may be redundantly set in two air conditioning units, which causes a problem that normal air conditioning control is not performed.

The present invention has been made in view of the above circumstances, and it is possible to automatically set the address of each air conditioning unit, omit manual setting work, and reliably prevent erroneous address setting. It is intended.

(Means for Solving the Problem) In order to achieve the above-mentioned object, the means taken by the invention according to claim (1) is, as shown in FIG. Air conditioning units (3), (3),
... form a closed circuit transmission line (13) and are connected in series,
The controller (2) and each air conditioning unit (3),
It is intended for an operation control device of an air conditioner that sends and receives control signals to and from (3), ... To control the air conditioning units (3), (3) ,.

Then, in the controller (2), an address setting for setting a different address to each of the air conditioning units (3), (3), ... While the addresses of the air conditioning units (3), (3) ,. Address setting means (52) for sequentially transmitting signals is provided. Further, in each of the air conditioning units (3), (3), ..., The output side of the air conditioning unit (3) and the input side of the controller (2) in the transmission path (13) are short-circuited to the air conditioning unit (3). ) Is provided with bypass means (34) for preventing transmission to the air conditioning unit connected to the output side, and the address setting means (5
Writing means (62) for writing the address when one of the address setting signals transmitted by (2) is received, and the writing means (62)
The bypass means (34) according to the write completion signal output by
And a shutoff means (63) for shutting off.

The means taken by the invention according to claim (2) is the invention according to claim (1), wherein the address setting means (52) of the controller (2) is the air conditioning unit (3) of the address to be set. First control unit (52a) that transmits a control signal
A setting unit (52b) which outputs an address setting signal when the response signal of the air conditioning unit (3) to the control signal of the first control unit (52a) is not received; and an address setting signal of the setting unit (52b) A second control unit (52c) is provided, which transmits a control signal to the air conditioning unit (3) of the address again when the response signal of the air conditioning unit (3) is received.
Further, the writing means (62) of each of the air conditioning units (3), (3), ... Writes an address when receiving the address setting signal of the setting section (52b), and sends the response signal to the controller (2). Section (62a) and the address section (62a)
An output section (62b) which outputs a write completion signal to the cutoff means (63) when the control signal of the self address written by (a) is received.
And is equipped with.

The means taken by the invention of claim (3) is the invention of claim (1) or (2), in which the controller (2) has a transmission line (13) before transmission of the address setting means (52). ) Is a closed loop detecting means (53) for detecting whether the closed loop detecting means (53) detects the open loop of the transmission line (13) and the address setting means (52) is set. The initial means (54) for initializing the processing is provided.

Further, the means taken by the invention according to claim (4) is the closed-loop detecting means (53) at the time of power-on in each of the air conditioning units (3), (3), ... In the invention according to claim (3). ) Detects an open loop of the transmission line (13), an open loop means (64) for opening the transmission line (13) is provided.

The means taken by the invention according to claim (5) is the invention according to claims (1) to (4), in which each air conditioning unit (3), (3), ... Has a writing means (62). A display means (35) is provided for indicating the completion of the address setting in response to the output write completion signal.

Further, the means taken by the invention according to claim (6) is the remote control switch (4) in each of the air conditioning units (3), (3), ... In the inventions according to claims (1) to (5). The remote control switch (4) is provided with a display section (42) for displaying an address number according to an address signal output from the air conditioning unit (3).

Further, the means taken by the invention according to claim (7) is that in the invention according to claims (1) to (6), the controller (2) determines the final address set by the address setting means (52). A tail discriminating means (55) for transmitting a tail recognition signal to the air conditioning unit (3) having the final address is provided, while the tail discriminating means (55) is arranged at the tail of each air conditioning unit (3), (3) ,. When a recognition signal is received, a tail signal output means (65) for outputting a tail signal to the remote control switch (4) connected to the air conditioning unit (3) is provided, and the tail signal output means (65) is output to the remote control switch (4). A tail display section (44) for displaying the final address in response to the tail signal of the means (65) is provided.

(Operation) With the above configuration, in the invention according to claim (1), each air conditioning unit (3), (3), ...
When the address is reset, the address setting means (52) of the controller (2) sends an address setting signal to each air conditioning unit (3), (3) ,. The writing means (52) of 3) writes the address. Specifically, in the invention according to claim (2), first, the first control unit (52a)
When the control signal is transmitted, no air conditioning unit (3) responds because the address is not set at this time. Then, the setting section (52b) transmits an address setting signal. At this time, since the bypass means (34) of the first air conditioning unit (3) closest to the controller (2) is in conduction, it is not transmitted to the air conditioning unit (3) in the subsequent stage, and the first air conditioning unit (3) is not transmitted. Only the air conditioning unit (3) receives the address setting signal, the address section (62a) writes the address, and then the response signal is transmitted, and the controller (2) receives the response signal and the second control section (52c) outputs a control signal. Then, the air-conditioning unit (3) to which the address is set receives this control signal, the output section (62b) outputs a write completion signal, and the cutoff means (63) cuts off the bypass means (34). The next air conditioning unit (3) is the controller (2)
Can be transmitted and received, and the addresses are set in the same manner as described above, and the addresses are sequentially set to the air conditioning units (3), (3), ....

Further, in the invention according to claim (3), the closed loop detection means (53) detects whether or not the transmission path (13) is a closed loop before the transmission of the address setting means (52) of the controller (2), and the open loop is detected. In this case, the initial means (54) initializes the setting process, and the setting process is performed again from the beginning. Further, in the invention according to claim (4), the open loop means (64) of the air conditioning unit (3) opens the transmission path (13) at the time of power recovery such as momentary power failure and the closed loop detection means (53). )
Detects this open loop and causes the address setting process to be performed from the beginning.

Further, in the invention according to claim (5), when the address is set, the display means (35) of each of the air conditioning units (3), (3), ... In the invention, the display section (4) of the remote control switch (4)
2) displays the address number. Also, claim (7)
In the invention according to the third aspect, the final address set by the final identification means (65) of the controller (2) is determined, the air conditioning unit (3) at the final address is met, and the final display part (44) of the remote control switch (4) is displayed. Displays the final address.

(Effect of the invention) Therefore, according to the inventions according to claims (1) and (2),
Since the address is automatically set to each of the air conditioning units (3), (3), ..., It is possible to omit a manual setting operation by an operator or the like and simplify the work.
Furthermore, it is possible to reliably prevent erroneous address settings,
It is possible to perform accurate air conditioning control and efficiently perform service.

Further, in the invention according to claim (3), since the closed loop of the transmission line (13) is checked and the address is set, duplicate setting can be surely prevented, and the invention according to claim (4) According to the invention, if an instantaneous power failure or the like occurs during address setting, the address setting is performed again, so that erroneous setting can be reliably prevented.

Further, in the inventions according to claims (5) and (6), since the address setting completion and the like are displayed, it is possible to accurately determine the address setting completion, and it is possible to easily detect miswiring and the like. it can.

Further, in the invention according to claim (7), since the final address that has been set is displayed, it is possible to accurately determine to which air conditioning unit (3) the setting process has been completed. A mistake or the like can be surely detected.

(Example) Hereinafter, the Example of this invention is described based on drawing.

As shown in FIG. 2, (1) is an air conditioner in which a plurality of indoor units (3), (3), ... Are connected to one outdoor unit (2), and each indoor unit A remote control switch (4) (hereinafter referred to as a remote controller) is connected to the units (3), (3), ....
Although not shown, the outdoor unit (2) is provided with a compressor, a four-way switching valve for switching between heating and cooling, and an outdoor heat exchanger, while the indoor unit (3) is not shown.
An indoor heat exchanger and an expansion mechanism are provided inside, and indoor units (3), (3), ... Are connected to the outdoor unit (2) in parallel so that the refrigerant can circulate.

Further, the outdoor unit (2) has a built-in CPU (5) to form a controller for controlling each indoor unit (3), (3), ... And a receiver (2) including a section (21) and a photocoupler having a photodiode and a phototransistor.
2) and are connected.

On the other hand, the indoor unit (3) has a built-in CPU (6) and constitutes an air conditioning unit for air conditioning each room.
In (6), a transmitter (31) and a receiver (3) each consisting of a photocoupler including a photodiode and a phototransistor.
2) and the remote controller (4) via the transmission unit (33).

Further, the outdoor unit (2) and the indoor units (3), (3), ... Have two crossover wires (11), (11).
Connected to each indoor unit (3), (3), ...
Are connected in series. That is, the reception unit (22) of the outdoor unit (2) is sequentially connected to the reception unit (32) and the transmission unit (31) of each indoor unit (3), and the transmission unit (of the final indoor unit (3) ( 31) is connected to the transmitter (21) of the outdoor unit (2) via the short-circuit plate (12), and a closed-circuit transmission path (13) is formed. Then, in each of the indoor units (3), the output side of the indoor unit (3) and the input side of the outdoor unit (2) in the transmission path (13) are short-circuited to transmit to the indoor unit (3) in the subsequent stage. A bypass means (34) for blocking the transmission is provided, and the bypass means (34) connects the transmitter section (31) of the indoor unit (3) and the transmitter section (21) of the outdoor unit (2) via the bypass path (34a). A photocoupler (34d), which is connected to the phototransistor (34b) connected to the bypass path (34a) and a photodiode (34c) connected to the CPU (6), is provided. .

The CPU (5) of the outdoor unit (2) is provided with an air conditioning control means (51) for controlling the air conditioning of the indoor units (3), (3), ...
Address setting means (62) for automatically setting the addresses (# 0), (# 1), ... Of (3) ,.
The address setting means (52) is provided for each indoor unit (3),
A first control section (52a) for transmitting a data signal, which is a control signal, to the indoor unit (3) having the address set in a state where the addresses of (3), ... Are reset, and the first control section (5).
2a) a setting unit (52b) that outputs an address setting signal when there is no response signal to the data signal, and a second control unit that transmits the data signal again when there is a response signal to the address setting signal of the setting unit (52b) (52c) and.

Further, the CPU (5) of the outdoor unit (2) has a closed loop detecting means (for detecting whether or not the transmission path (13) is a closed loop before the address setting means (52) transmits a data signal or the like. 53), initial means (54) for initializing address setting processing when the closed loop detecting means (53) detects an open loop of the transmission line (13), and address setting means (5
The tail discrimination means (55) for discriminating the final address set by the address signal of 2) and outputting the tail recognition signal.
And are configured.

Further, the CPU (6) of the indoor unit (3) has an air-conditioning means (61) for air-conditioning each room in response to a control signal of the outdoor unit (2) and an address setting signal for the address setting means (52). Write means (62) for receiving the address and writing the address,
A shutoff means (63) for shutting off the bypass means (34) by a writing completion signal of the writing means (62) is configured.
The writing means (62) outputs a writing completion signal when it receives an address portion (62a) which sends an address writing response signal to the outdoor unit (2) and a data signal of the second control portion (52c). The cutoff means (63) further includes an output section (62b) for turning off the phototransistor (34b) of the bypass means (34).

Further, the CPU (6) of the indoor unit (3) has a transmitting unit for a predetermined time (for example, 2 seconds) so that the closed loop detecting means (53) detects the open loop of the transmission line (13) when the power is turned on. An open loop means (64) for turning off (31) and a tail signal output means (65) for receiving the tail recognition signal of the tail discrimination means (55) and outputting a tail signal are constituted. Furthermore, the indoor unit (3) has a bypass means (3
Light emitting element (35) in series with the photodiode (34c) of 4)
Is connected, the light emitting element (35) is turned off when the address setting is completed and the photodiode (34c) is turned off, and constitutes a display means for displaying the completion of setting.

On the other hand, the remote controller (4) has a built-in CPU (41) for controlling the indoor unit (3), and the display unit (42) and the input unit (43) are connected to the CPU (41). , The tail display (44) is connected. Then, the display section (4
3) is configured to receive the address signal of the indoor unit (3) and display the set address number, and the tail display section (44) receives the tail signal of the tail signal output means (65) and displays the final address. Is configured.

Next, the address setting operation of the air conditioner (1) will be described based on the control flow of the outdoor unit (2) shown in FIG.

First, after the power is turned on and initialized, step ST1
In step ST2, the flag is reset when the power is turned on.
And the command code is the closed loop check command CL.
It is judged whether or not it is C, and this command code is set to the closed loop check command CLC when the power is turned on.
In step ST3, it is determined whether or not the result of the closed loop check is normal twice or more. That is, the closed loop detection means (53) checks the transmission line (13) to check whether the transmission line (13) is a closed loop or an open loop, and if a closed loop is formed, step ST4 To set the closed loop check error counter to zero, and go to step ST5
Then, the command code is set from the closed loop check command CLC to the transmission / reception command XR, the process returns to step ST1, and the above operation is repeated.

Then, at the time of the next processing operation, the determination in step ST2 is NO because it is a transmission / reception command, the process proceeds to step ST6, and it is determined whether or not the operation code is the data transmission code 00 for transmitting the data signal which is the control signal. ,
Since the data transmission code 00 is set when the power is turned on, the first control unit (52a) transmits the data signal to the indoor unit (3) having the head address # 0. In other words, in this case, since it has been initialized, the indoor unit (3) with the youngest address # 0 starts transmission, while the indoor units (3), (3), ... Are initialized when the power is turned on. , All addresses have been reset, so the first control unit (52
Indoor unit (3) corresponding to the address sent by a)
Does not exist, and none of the indoor units (3), (3), ... Receives the data signal and transmits the response signal. Therefore, in step ST7, the transmission is determined to be abnormal, the process proceeds to step ST8, and it is determined whether or not the abnormal code is an error. Since it is abnormal, the process proceeds to step ST9, it is determined whether or not a time error, and the response signal Since there is no error, a time error occurs, the process moves to step ST10, the command code is set in the closed loop check command CLC, the transmission error count is incremented in step ST11, and it is determined in step ST12 whether the transmission error counter has reached 4 It returns to step ST1 until it becomes 4. That is, if the first control unit (52a) transmits the data signal four times and receives no response signal, the determination in step ST12 becomes NO, the process moves to step ST13, the transmission abnormality counter is reset, and in step ST14. It is determined whether or not the connection flag is set. Since the connection flag is currently reset, the process proceeds to step ST15, the operation code address setting code 30 is set, and step ST1
Then, the above operation is repeated.

Also in the next processing operation, the closed loop detection means (53) checks the closed loop of the transmission path (13) (step ST3), and then moves from step ST6 to step ST16, and the setting unit of the address setting means (52). (52b) outputs the address setting signal and determines whether or not the transmission is normally completed. That is, when the setting section (52b) outputs the address setting signal, the first indoor unit (3) receives the setting signal at this time, but in this case, the bypass means (34) of all the indoor units (3) is initialized. Since the first indoor unit (3) currently receives the address setting signal because it is turned on, the indoor units (3), (3), ... No signal is transmitted.

Then, in the indoor unit (3) that has received the address setting signal, the address section (62a) of the writing means (62) sets an address to write the address and outputs a response signal to the outdoor unit (2). At this stage, the bypass means (34) is conducting. Based on this response signal, the outdoor unit (2) judges that the transmission is normal, and the above step ST
From step 16, perform steps ST17 to ST19 to determine whether the data link code of the received data is 1, whether the address of the received data and the send address match, and whether the operation of the receive data matches the send operation. If not, step ST20
The operation from ST22 to ST22 is performed, the operation code is set to the data transmission code 00, the transmission abnormality counter is cleared, the transmission abnormality flag is reset, and the process returns to step ST1.

Then, after performing the operations of steps ST1 to ST6 described above and performing a closed loop check (step ST3), step ST6
In, the second controller (52c) outputs the data signal to the indoor unit (3) having the set address. Since the address of the indoor unit (3) is set as described above, the data signal is received, the response signal is transmitted to the outdoor unit (2), and the output section (62b) of the writing means (62) is also sent. ) Outputs a write completion signal to the cutoff means (63),
The cutoff means (63) turns off the photodiode (34c) of the bypass means (34) and cuts off the bypass path (34a).
This enables transmission / reception between the next indoor unit (3) and the outdoor unit (2), while in the indoor unit (3) to which the address is set, the photodiode (34c) is turned off and the light-emitting element ( 35) is turned off and the completion of address setting is displayed, and an address number is displayed by the address signal of the writing means (62) on the display section (42) of the remote controller (4).

On the other hand, the outdoor unit (2) determines whether the transmission is normal in step ST7 based on the response signal from the indoor unit (3), determines from step ST7 to steps ST23 to ST25, and determines whether the data link code of the received data is 1 or not. , It is determined whether the address of the reception data matches the transmission address, and whether the operation of the reception data matches the transmission operation. If the judgments are YES, step S
Performs operations from T26 to ST29, increments the connection recognition number of indoor units (3), resets the transmission error flag, clears the transmission error counter, and sets the command code to the closed loop check command CLC.

After that, the process proceeds to step ST30, it is determined whether or not the number of connected recognition devices is 1, and if the address # 0 is present, the step is performed.
By judging ST31 to ST33, it is judged whether or not the line inspection mode is selected, and whether the model code is for 2 or 1 unit. When the line inspection mode is selected, the maximum number of connected units is set to 1 in step ST34. Is determined from the model code of the indoor unit (3) with address # 0. If it is for 2 units, set the maximum number of connected units to 8 in step ST35, and if it is for 1 unit, set it to 2 in step ST36. , Above steps ST34, ST35, ST
From 36, the process proceeds to step ST37, and it is determined whether the transmission address exceeds the maximum number of connected devices. After address # 1, the process moves from step ST30 to step ST37. And
If the transmission unit address does not exceed the maximum number of connected units, the operations of steps ST38 to ST40 are performed, the connection flag is set, the received data is stored, the transmission unit address is incremented, and the process returns to step ST1. As a result, the address setting of the first indoor unit (3) is completed, and thereafter, the above operation is repeated to sequentially set the addresses of the indoor units (3).

After that, when the address of the final indoor unit (3) is set, as described above, first in step ST6, the first control unit (52a)
Does not receive the response signal after transmitting the data signal, the setting unit (52b) subsequently transmits the address setting signal. Since no response signal is received in response to this address setting signal, the process moves from step ST16 to step ST41 to determine whether or not the abnormal code is an error. If there is no response signal, a time error occurs and the step
Performs the operations of ST43 to ST45, sets the command code to the closed loop check command CLC, increments the transmission abnormality counter, determines whether or not the transmission abnormality counter has reached 4, and returns to step ST1 until it reaches 4. . And when the address setting signal is transmitted four times and the response signal is not received,
Performs operations from step ST45 to steps ST46 to ST50, resets the transmission error counter, sets the transmission error flag, determines whether the connection flag is set, and if not, sets the system transmission error flag. Reset and reset the connected unit error flag. afterwards,
It is determined whether the system transmission error flag is set, whether the connected device error flag is set, whether the number of connected devices recognized is 1 or more, and whether the models are mixed. Whether or not the protocols match, whether or not the number of connected devices is zero, and whether or not the number of connection setting devices and the number of connection-recognized devices match. Then, when the above requirements are satisfied, the operations of steps ST58 to ST60 are performed, the transmission unit address is set to zero, the command code is set to the closed loop check command CLC, and the normal transmission mode is set to step. Returning to step 1, the normal transmission mode is entered from step ST1 and the air conditioning control operation is started.

The above-mentioned operation is performed when the address setting is normally performed, and when an abnormality occurs during the address setting, for example,
When the closed loop detection means (53) detects the open loop of the transmission line (13), the process moves from step ST3 to step ST61 to increment the closed loop check abnormality counter, and in step ST62, whether the closed loop check abnormality counter has become 2 or not. If the open loop is detected twice in a row, the process returns from step ST62 to step ST1.
Moving to 63, the system transmission abnormality flag is set, and the closed loop check abnormality counter is reset in step ST64.

After that, the process proceeds to step ST51, and the system transmission abnormality flag is set (step ST63). Therefore, the operations of steps ST65 to ST70 are performed, the transmission unit address is returned to zero, and the command number is closed loop check command CL.
Set to C, reset the connection recognition number to zero, reset all connection flags, clear the model code and protocol,
The operation code is set to the data transmission code 00 and the process returns to step ST1. That is, all the address setting processing is cleared, and the address setting is restarted from the initial state.

Also, during the address setting process, when one of the indoor units (3) is turned on again due to a momentary power failure, etc., the open loop means (64) of the indoor unit (3).
Turns off the transmission unit (31) for 2 seconds, and sets the transmission path (13) into an open loop. As a result, the closed loop detection means (53) detects the open loop in step ST3 described above, and the address setting is restarted from the beginning by the operations of steps ST63 to ST70 as described above.

Further, in the above control flow, if the transmission of the data signal of the first control section (52a) is not normally completed, the process proceeds from step ST7 to step ST8. If the abnormal code is incorrect, the process proceeds to step ST71 and the connection flag After performing the processes of steps ST10 to ST14, the process proceeds to step ST72, the system transmission abnormality flag is set, the processes of steps ST51 to ST65 to 70 are performed, and the address setting is performed again. Also, if transmission is not normally completed for the address setting signal of the setting section (52b),
After shifting from step ST16 to step ST41, if the error code is incorrect, the connection flag is set at step ST73, and the system transmission error flag is set at step ST74 through steps ST43 to ST48, and then from step ST51 to step ST65. ~ Perform the process of ST70 and set the address again. Furthermore, if the transmission unit address is greater than the maximum number of connected units in step ST37, the connection is over and the connected unit error flag is set in step ST75.
The processes of steps ST51 and ST52 to steps ST65 to ST70 are performed, and the address setting is performed again. Further, in the above steps ST9 and ST42, if the abnormal code is not a time error, it means that transmission is not possible, so the process moves to steps ST76 and ST77, sets the command code in the closed loop check command CLC, and returns to step ST1.

On the other hand, if the data link code of the received data is not 1 in steps ST18 to ST19, step ST73
If the data link code of the received data is not 1 in steps ST23 to ST25, proceed to step
Move to ST71 and set the address again as described above. If the number of connected recognition units is not 1 or more in steps ST53 to ST55 and ST57, the process proceeds to step ST65 and the address setting is performed again.

An address setting means (52) is constituted by the steps ST1 to ST60, and steps ST2, ST3, ST61 and
In ST62, the closed loop detection means (53) performs steps ST63, S
The initial means (54) is configured by T51 and ST65 to ST70.

FIG. 5 shows a control flow of the outdoor unit (2) which displays only the final address of the addresses set at the time of setting the addresses, and the display operation of the final address will be described.

First, when the outdoor unit (2) starts the display operation,
After the address number N is set to zero in step ST101, a normal data signal is transmitted to the indoor unit (3) of address # 0 in step ST102, and then the process proceeds to step ST103 and the address # 0 is set. It is determined whether or not there is a normal response signal from the indoor unit (3). Then, when the response signal is received, since the address has been set, the process proceeds to step ST104, the address number N is incremented, the process returns to step ST102, the above operation is repeated, and each indoor unit (in the order of address number N) It is determined whether or not there is a response signal to 3), (3), ....

This operation is repeated, and if there is no response signal from the indoor unit (3) in step ST103, step ST10
Move to 5 and address setting code 3 in step ST15 described above
Based on 0, the address setting signal of the address #N is transmitted to the indoor unit (3) of the address #N to set the address #N to the indoor unit (3). Then step ST
Moving to 106, the tail discriminating means (55) transmits a tail recognition signal to the indoor unit (33) of the address #N, and step ST10
Moving to 7, it is determined whether or not there is a response signal from the indoor unit (3). Then, when the response signal is received,
Move to step ST108, and set the previously set address # N-1.
After instructing the indoor unit (3) of the
In step ST109, normal transmission is performed with the indoor unit (3) having the address #N set this time. In step ST104, the address number N is incremented and the above operation is repeated.

That is, the setting unit (52b) of the end discriminating means (55) of the outdoor unit (2) transmits an address setting signal, and the writing means (6) of the indoor unit (3) responds to this address setting signal.
When 2) responds, since the currently set address is the final address among the addresses set so far, the tail recognition signal is transmitted to the indoor unit (3) of the address.
The indoor unit (3) receives the tail recognition signal, the tail signal output means (65) outputs the tail signal to the remote controller (4), and the remote controller (4) displays the final address on the tail display section (44). Is displayed.

On the other hand, when the outdoor unit (2) sets one address #N, the outdoor unit (2) immediately precedes the address #N by one.
Since -1 is no longer the final address, a cancellation signal of the final address is transmitted to the indoor unit (3) of the address # N-1 immediately before, and the remote controller (4) of the indoor unit (3) causes the end display unit to display. The display of (44) will be stopped.
Then, the 21 last addresses of the indoor units (3) sequentially set are displayed, and the last set indoor unit (3) continuously displays the final address.

In the control flow of FIG. 5, steps ST103, ST105, and ST106 constitute the tail discriminating means (55).

Therefore, since the addresses are automatically set to the indoor units (3), (3), ..., It is possible to omit a manual setting operation by an operator or the like and simplify the work. Further, erroneous address setting can be reliably prevented, accurate air conditioning control can be performed, and service can be efficiently performed.

Also, since the closed loop of the transmission line (13) is checked and the address is set, duplicate setting can be reliably prevented, and if an instantaneous power failure occurs during address setting,
For example, when the outdoor unit (2) is polling the address # 4, even if the indoor unit (3) with the address # 2 momentarily loses power, the indoor unit (3) with the address # 2 outputs the setting signal for the address # 4. Since the address setting is performed again from the beginning without receiving the message, erroneous setting can be surely prevented.

Further, since the completion of the address setting is displayed on the indoor unit (3) and the remote controller (4), the completion of the address setting can be accurately discriminated, and the completion display of the setting is displayed on all the indoor units (3), (3). ), ..., If it ends in the middle, it is possible to easily detect miswiring.

Further, since the final address that has been set is displayed, it is possible to accurately determine up to which air conditioning unit (3) the setting process has been completed, and it is possible to reliably detect wiring mistakes and the like. .

In this embodiment, the outdoor unit (2) is set as the controller, but the address may be set by the centralized controller or the like.

Further, although the present embodiment has been described with respect to the multi-type air conditioner, it is not limited to the multi-type.

[Brief description of drawings]

FIG. 1 is a block diagram showing the configuration of the present invention. 2 to 5 show an embodiment of the present invention, FIG. 2 is an overall schematic configuration diagram of an air conditioner, and FIG. 3 is a circuit block diagram of its main part. 4 and 5 are control flow diagrams showing the address setting process. (1) …… Air conditioner (2) …… Outdoor unit (3) …… Indoor unit (4) …… Remote control (5), (6) …… CPU (13) …… Transmission path (34) …… Bypass means (35) …… Light emitting element (42) …… Display section (44) …… End display section (52) …… Address setting means (52a) …… First control section (52b) …… Setting section (52c ) Second control unit (53) ...... Closed loop detection means (54) ...... Initial means (55) ...... End determination means (62) ...... Writing means (62a) ...... Address section (62b) ...... Output part (63) …… breaking means (64) …… open loop means (65) …… tail signal output means

Claims (7)

[Claims] 1. A plurality of air conditioning units (3), (3), ... Are connected to a controller (2) in series to form a closed circuit transmission path (13), and are connected to the controller (2). An operation control device of an air conditioner for transmitting and receiving a control signal to and from the air conditioning units (3), (3), ... to control the air conditioning units (3), (3) ,. 2) each air conditioning unit (3),
Address setting means (52) for sequentially transmitting address setting signals for setting different addresses to the respective air conditioning units (3), (3), ... Is provided while the addresses of (3), ... Are reset. In each of the air conditioning units (3), (3), ..., The air conditioning unit (3) is short-circuited between the output side of the air conditioning unit (3) and the input side of the controller (2) in the transmission path (13).
By-pass means (34) for preventing transmission to the air conditioning unit (3) connected to the output side of the address setting means (52) is provided, and the address setting signal 1 transmitted from the address setting means (52) is
Writing means (62) for writing the address when receiving the address,
An operation control device for an air conditioner, comprising: a shutoff means (63) for shutting off the bypass means (34) by a write completion signal output from the write means (62). 2. The operation control device for an air conditioner according to claim 1, wherein the address setting means (52) of the controller (2) sends a control signal to the air conditioning unit (3) of the address to be set. 1 control section (52a), a setting section (52b) that outputs an address setting signal unless a response signal of the air conditioning unit (3) to the control signal of the first control section (52a) is received, and the setting section (52b) 2) is provided with a second control unit (52c) that transmits a control signal to the air conditioning unit (3) of the address again when the response signal of the air conditioning unit (3) to the address setting signal of (3) is received. ), (3), ... Writing means (62)
Is an address section (62a) that writes an address and sends a response signal to the controller (2) when the address setting signal of the setting section (52b) is received, and a self-address control signal written by the address section (62a). And an output section (62b) for outputting a write completion signal to the cutoff means (63) when receiving the operation control apparatus for the air conditioner. 3. The operation control device for an air conditioner according to claim 1 or 2, wherein the transmission path (13) is in a closed loop in the controller (2) before transmission of the address setting means (52). Closed loop detection means (5
3) is provided, and initial means (54) for initializing the setting process of the address setting means (52) when the closed loop detection means (53) detects an open loop of the transmission line (13) An air conditioner operation control device characterized by: 4. The operation controller for an air conditioner according to claim 3, wherein each of the air conditioning units (3), (3), ... Has a closed loop detecting means (53) when the power is turned on.
An operation control device for an air conditioner, which is provided with an open loop means (64) for opening the transmission path (13) so as to detect the open loop of 3). 5. The operation control device for an air conditioner according to any one of claims (1) to (4), wherein each air conditioning unit (3), (3), ... Has a writing means. An operation control device for an air conditioner, which is provided with a display means (35) for indicating completion of address setting in response to a write completion signal output from (62). 6. An operation control device for an air conditioner according to any one of claims (1) to (5), wherein each air conditioning unit (3), (3), ... Has a remote control switch ( 4) is connected, and the remote control switch (4) is provided with a display section (42) for displaying an address number according to an address signal output from the air conditioning unit (3). Operation control device. 7. The operation control device for an air conditioner according to any one of claims (1) to (6), wherein the controller (2) has a final address set by the address setting means (52). A tail discriminating means (55) for discriminating and transmitting a tail recognition signal to the air conditioning unit (3) of the final address is provided, while the tail discriminating means (55) is provided for each air conditioning unit (3), (3), .... The tail signal output means (65) for outputting the tail signal to the remote control switch (4) connected to the air conditioning unit (3) when the tail recognition signal is received is provided in the remote control switch (4). An operation control device for an air conditioner, which is provided with a tail display section (44) for receiving a tail signal of a signal output means (65) and displaying a final address.