JP2003139375A - Parallel processing air-conditioning control communication device, parallel processing air- conditioning control communicating method and parallel processing air-conditioning control communication program - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a parallel processing air-conditioning control communication device which can control air-conditioning equipment adequately without increasing a communication traffic. SOLUTION: This parallel processing air-conditioning communication device for remote central control of equipment equipped at a building is provided with a building management communication network, which is a core network for building management to which a building management host computer is connected, where a first communication protocol is used, an air-conditioning control network to which the air-conditioning equipment is connected and where a second communication protocol different from the building management communication network is used, and a communication device to which a communication node for converting a control command received through the building management communication network using the first communication protocol to a control command of the second communication protocol and sending it to the air-conditioning equipment through the air-conditioning control network is mounted, and a plurality of the communication nodes are mounted to the communication device so that processing of control of the air-conditioning equipment is distributed by the plurality of communication nodes.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a parallel processing type air conditioning control communication device, a parallel processing type air conditioning control communication method, and a parallel processing type air conditioning control for centrally managing air conditioning equipment installed in a building and controlling operation. Regarding communication programs.

[0002]

2. Description of the Related Art Conventionally, a network for controlling air conditioning equipment installed in a building uses a communication protocol developed exclusively for packaged air conditioners, and each manufacturer of packaged air conditioners has its own dedicated communication. Currently, the protocol is developed and implemented. Originally, this air-conditioning control communication protocol was developed for the purpose of exchanging control data between the indoor unit and the outdoor unit of the packaged air conditioner, so it does not need to have a high communication speed. It is sufficient if the information is transmitted to the other device within a time of about 30 minutes. Unlike computer networks, the information that is transmitted is not air conditioner control information, but document information, so it is content such as sensor input values and output values for controlling actuators. The amount of information can be expressed. In addition, the indoor unit of the packaged air conditioner connected to the air conditioning control network requires low cost, so all processing such as sensor input, actuator output, air conditioning control calculation, control network communication, etc., can be performed with a single one-chip microcomputer. There is a need to do. Therefore, such an air-conditioning control network dedicated communication protocol must have a speed and a memory capacity that can be executed as one process of the one-chip microcomputer.

That is, the speed must be 9600 bps or less, which is the bit rate that can be realized by the built-in serial communication function of the one-chip microcomputer, and the size of the communication protocol program must be about several kilobytes. Also, if the communication protocol of the air conditioning control network unique to each manufacturer is decided, it is impossible to change the communication protocol in terms of combination and compatibility when used in the market. Therefore, from the present point of view, there is a circumstance that it is necessary to continue to use even a communication protocol having a relatively low communication speed.

FIG. 4 is a block diagram showing the structure of an air conditioning control system according to the prior art. In FIG. 4, reference numeral 1
Is a building management host computer (hereinafter referred to as a building management host) that controls each device of equipment (air conditioning, lighting, elevator, etc.) provided in the building. Reference numeral 2 is
It is a building management communication network that connects each device. Reference numeral 3 is a communication device that manages between the building management host 1 and each device. Reference numeral 4 is a commercial power supply supplied from the outside of the communication device 3. Reference numeral 5 is a power supply provided in the housing of the communication device 3. Reference numeral 6 is a communication node that controls each device according to an instruction from the building management host 1, and is mounted on the board. Reference numeral 7 is a network connection point for connecting the building management communication network 2 and a different network. Reference numeral 8 is
It is an air conditioning control network dedicated to air conditioning equipment and is connected to a network connection point. Reference numerals 90 to 9m are indoor units of the air conditioning system, which receive an operation control instruction via the air conditioning control network 8 and operate based on this instruction.

Next, the communication protocol of the air conditioning control network 8 will be described. The communication protocol of the air conditioning control network 8 shown in FIG. 4 is as follows. (1) Communication speed (bit rate): 9600 bps (2) Communication access control method: CSMA / CD (collision detection method) (3) Packet format: destination address + source address + data length + data + checksum (4) data : (Command code + operation code) x multiple sets

The command code and operation code have a command set defined in advance for the control information of the packaged air conditioner. Further, the control information can be expressed by a very small number of bytes, and one control data can be expressed by a combination of a 1-byte command code and a 1-byte or 2-byte operation code as follows. Has become. That is,
A plurality of operation codes are regularly defined for each command code.

Command code Operation code Run / stop "01h" OFF command "00h", ON command "01h", ... Operating mode "02h" Cooling command "00h", Heating command "01h", ...: :: :: , "Xxh" indicates a 2-digit hexadecimal number (corresponding to 1 byte).

As described above, since the (command code + operation code) is composed of 2 bytes, the total number of bytes of the communication packet is small even if a plurality of sets of (command code + operation code) are included in one communication packet. It usually takes about 10 bytes. Since the bit rate of the air conditioning control network 8 is 9600 bps, one byte is about 1 msec, and generally one packet has an occupied time of about 10 msec. As described above, the communication protocol of the air conditioning control network 8 is specialized for the communication between the indoor and outdoor units of the packaged air conditioner, and although it is low speed, one packet is short, and the control data is transmitted by the unique command code and operation code. Have

[0009]

By the way, the air conditioning control network 8 is currently used at a relatively slow communication speed of 9600 bps due to the constraints of cost reduction and long-term use. 9600b for communication between the indoor and outdoor units of the packaged air conditioner
Although the speed is sufficient if it is ps, the speed of the building management communication network 2 which has been used in recent years is 78 Kbps, which is becoming the mainstream, and there is a difference of about 10 times compared with the speed of the air conditioning control network 8.

In a large building, as in the case of emergency stop of packaged air conditioner indoor units on all floors,
When the communication to the air conditioning equipment is concentrated, the building management host 1 issues a stop command to each of the air conditioning system indoor units 90 to 9m, and the communication device 3 reports the stop status of each building to notify the building. The stop status must be displayed on the screen of the management host 1. Therefore, if the response of this status report is slow, the operator must wait a long time until the floor all-point stop result is displayed. In the building management system shown in FIG. 4, a stop command for each indoor unit can be transmitted to the communication device 3 at high speed, but the communication protocol of the air conditioning control network 8 below the communication device 3 has a slow communication speed. There is a problem that the communication node 6 in the communication device 3 becomes a bottleneck.
In addition, if the building management host 1 does not respond after waiting a predetermined time (for example, 10 seconds) after transmitting the packet, the building management host 1 determines that it has timed out, and the building management host 1 has to try retransmission. However, there is a problem that the traffic increases and the traffic congestion worsens.

The present invention has been made in view of such circumstances, and when controlling an air conditioning facility via a communication network having a different communication protocol, the air conditioning facility can be appropriately controlled without increasing communication traffic. An object of the present invention is to provide a parallel processing type air conditioning control communication device capable of performing control, a parallel processing type air conditioning control communication method, and a parallel processing type air conditioning control communication program.

[0012]

According to a first aspect of the present invention, a parallel processing system for controlling the operation of an air conditioning facility in response to an instruction from a building management host computer for remotely centrally controlling the facilities installed in the building. An air conditioning control communication device,
The parallel processing type air conditioning control communication device is a building management backbone network to which the building management host computer is connected, and the building management communication network using a first communication protocol is connected to the air conditioning facility, An air conditioning control network using a second communication protocol different from the management communication network, and a control command received via the building management communication network using the first communication protocol, a control command of the second communication protocol. And a communication device equipped with a communication node for transmitting to the air-conditioning facility via the air-conditioning control network, wherein the communication device has a plurality of communication nodes and controls a plurality of air-conditioning facilities. It is characterized in that processing is distributed by communication nodes.

According to a second aspect of the present invention, in the communication device, the plurality of communication nodes are mounted in a single casing, and the building management communication network and the air conditioning control network each have one connection terminal. It is characterized by

According to a third aspect of the present invention, the communication node uses a building management communication processor that communicates with the building management host computer using the first communication protocol, and uses the second communication protocol. And an air conditioning communication processor for communicating with the air conditioning control network, and an interface between communication processors for converting a protocol between the building management communication processor and the air conditioning communication processor.

The invention according to claim 4 is characterized in that the air conditioning communication processor transmits a plurality of control commands received by the building management communication processor into one packet at predetermined time intervals.

According to a fifth aspect of the present invention, the air conditioning communication processor waits until a predetermined number of control commands are received by the building management communication processor, and when the predetermined number of control commands are received, It is characterized in that a predetermined number of control commands are transmitted as one packet.

According to a sixth aspect of the present invention, the building management communication processor is connected with network variables set in the building management host computer, and controls the air conditioning equipment based on the combined network variables. Is characterized by.

According to a seventh aspect of the present invention, in the parallel processing type air conditioning control communication device, the communication speed of the second communication protocol is lower than the communication speed of the first communication protocol. .

The invention according to claim 8 is a parallel processing type air-conditioning control communication method for controlling the operation of air-conditioning equipment in accordance with an instruction from a building management host computer for remote centralized control of equipment provided in a building. The parallel processing type air conditioning control communication method is a building management backbone network to which the building management host computer is connected, and receives a control command via the building management communication network using a first communication protocol. And a step of converting the control command into a control command of an air conditioning control network to which the air conditioning equipment is connected and which uses a second communication protocol different from the building management communication network, and a control command converted to the air conditioning equipment. And a step of transmitting a plurality of processes in parallel at the same time. To.

According to a ninth aspect of the present invention, in the parallel processing type air conditioning control communication method, the communication speed of the second communication protocol is lower than the communication speed of the first communication protocol.

[0021] The tenth aspect of the present invention is a parallel processing type air-conditioning control communication program for controlling the operation of air-conditioning equipment according to an instruction from a building management host computer for remote centralized control of equipment installed in a building. The parallel processing type air conditioning control communication program is a backbone network for building management to which the building management host computer is connected, and processing for receiving a control command via the building management communication network using the first communication protocol. And a process of converting the control command into a control command of an air conditioning control network to which the air conditioning facility is connected and which uses a second communication protocol different from the building management communication network, and a control command converted to the air conditioning facility. The process of transmitting each of the Wherein the causing a computer.

In the eleventh aspect of the present invention, the parallel processing type air conditioning control communication program is characterized in that the communication speed of the second communication protocol is lower than the communication speed of the first communication protocol. .

[0023]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A parallel processing type air conditioning control communication device according to an embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a block diagram showing the configuration of the same embodiment.
In this figure, the same parts as those of the conventional device shown in FIG. 4 are designated by the same reference numerals, and the description thereof will be omitted. The device shown in this figure is different from the conventional device in that a communication device 31 in which a plurality of communication nodes 61 to 6n are mounted in the same housing is provided instead of the communication device 3. The communication nodes 61 to 6n mounted on the communication device 31 are provided with internal network connections N1 and N2 in the housing of the communication device 31 for connecting in parallel, and the respective communication nodes communicate with each other. It is possible to The communication node 61 mounted in the communication device 31 is set as a master node. In FIG. 1, the communication nodes 61 to 6n are mounted on one board and n boards are connected in parallel, but all (n) communication nodes 61 to 6n are connected to one board. It may be mounted on only one board.

The air conditioning facility control operation of the parallel processing type air conditioning control communication device shown in FIG. 1 will be described below with reference to FIG. FIG. 2 is an explanatory diagram showing the configuration of the communication node 61 shown in FIG. In this figure, reference numeral 61 a is a building management communication processor that performs communication processing using the communication protocol of the building management communication network 2. Reference numeral 61b is
An air conditioning communication processor that performs communication processing using the communication protocol of the air conditioning control network 8. In the air conditioning communication processor 61b, air conditioning control communication reservation tables TRT0 to TRTm (only TRT0 and TRT1 are shown in FIG. 2) are provided by the number of air conditioning system indoor units 90 to 9m which the communication node 61 controls. There is. Reference numeral 61c
Is an inter-communication processor interface for connecting the building management communication processor 61a and the air conditioning communication processor 61b.

As described above, the air conditioning control network 8
In the communication protocol of, since the operation code is regularly defined for each command code, it is possible to make each air conditioning control command code a table with "rows" in the matrix and each operation code with "columns". This is the air conditioning control communication reservation table TRT0 to TRTm. Elements of the matrix defined by the "row" and the "column" are called "command cells".

First, every time the air conditioning communication processor 61b reads out a network variable (for example, OnOffCmd_1) from the building management communication processor 61a, it converts the network variable into an air conditioning control communication command, and the corresponding air conditioning system indoor unit 90. In the air-conditioning control communication reservation table addressed to ~ 9m, in the corresponding command cell of the table TRT1, "transmission reservation bit =
Write.

On the other hand, the air conditioning communication processor 61b has the air conditioning control communication reservation tables TRT0 to TRTm at regular intervals.
Are sequentially scanned, and the command cells having the transmission reservation bit set for each air conditioning control communication reservation table are collected to assemble communication packets in the transmission buffer. For example, as shown in FIG. 2, it is assumed that the transmission reservation bits of two commands of the command code “01h”, the operation code “01h” and the command code “02h”, and the operation code “00h” are written within a fixed period of time. Then, the packets "PAC_1 (destination address)", (Omitted), "01h, 01h", and "02h, 00h" are assembled in the transmission buffer.

Then, the air conditioning communication processor 61b transmits the packet in the transmission buffer to the air conditioning control network 8. As a result, the commands received in the fixed cycle time are combined into one, and the packets assembled in the transmission buffer are sequentially transmitted. The fixed period of time transmitted from this transmission buffer may be set to an allowable delay time until the command from the building management host 1 is reflected in the operation of the air conditioning system indoor units 90 to 9 m on each floor. Usually, the order of several seconds is acceptable, so set it on the order of several seconds.

A communication packet for air conditioning control needs to be transmitted for each destination, but since a plurality of command sets can be put in the data part of the packet, for example,
For a given air conditioning system indoor unit, "operation;ON",
It is possible to pack control information such as "operation mode: cooling", "set temperature: 25 ° C", and "remote control operation: prohibited" into one communication packet. Therefore, from the building management host 1, the indoor unit No. 1 is "operating;ON", the indoor unit No. 2 is "operating;ON", ..., The indoor unit No. 1 is "operating mode; cooling", and the indoor unit No. 2 is " Operation mode; cooling "
Even if the data arrives for the network variables in the order of ..., The air conditioning communication processor 61b assembles a plurality of control commands for each indoor unit of the air conditioning system into a communication packet for air conditioning control regardless of the order. Since the data is transmitted, the total number of transmission packets of the air conditioning control network 8 can be saved.

By doing so, transmission packets can be assembled together for each destination of the air conditioning control network 8 regardless of the data arrival order of the network variables in the building management communication processor 61a within a fixed cycle time. The number of transmissions can be reduced. Also,
Since the air conditioning communication processor 61b only sets a bit in the corresponding command cell of the air conditioning control communication reservation table when mapping the network variable to the air conditioning control communication command, the air conditioning communication processor 61b can process the command faster than the method of arranging and linking the command character strings. Is possible. Furthermore, since a plurality of communication nodes are provided and the processing is distributed, it is possible to eliminate the bottleneck in the concentration of communication. Furthermore, many air conditioning control commands can be efficiently transmitted at one time even through a network of two communication protocols having different communication speeds. Therefore, the communication line of the air-conditioning control network 8 having a slow bit rate can be fully utilized to eliminate the communication bottleneck in the communication node.

In order to control the air conditioning equipment, every time data is received from the network variable of the building management communication processor 61a, the destination address, the source address, the data length is calculated, and the character string of the command + operation code is written in the data section. Is required to assemble the air conditioning control communication packet, that is, the calculation of the checksum. Also, after assembling the transmission packet, it is necessary to execute a series of transmission processing routines including network line idle detection, packet transmission collision detection, backoff algorithm execution, transmission, and self-transmission read. It occupies a large proportion of the allocated CPU processing capacity, degrading the performance of the air conditioning communication processor 61b. However, according to the operation shown in FIG. 2, since the writing / reading to / from the air conditioning control communication reservation table is the writing / reading of the reserved bit, it can be executed at high speed even by the one-chip microcomputer, and the CPU occupation time is negligible. can do. Further, as described above, since assembling and sending of communication packets require a lot of CPU time, a plurality of commands are packed in one packet to reduce the number of times the sending process is executed. The CPU occupation time of 61b can be saved. This saved time can be distributed to the network variable reading process from the building management communication processor 61a. As a result, the data transmission from the building management communication processor 61a to the air conditioning communication processor 61b becomes high-speed (reads frequently), so that the overall bottleneck can be eliminated.

Next, the operation of forcibly stopping the entire air conditioning equipment by setting network variables will be described with reference to FIG. Forced stop of the entire air conditioning equipment is used to quickly stop all packaged air conditioners in the event of an emergency such as a fire, and to prohibit residents from operating the remote control until they are released. , A parallel processing type air conditioning control communication device for stopping all packaged air conditioners in an emergency is to reduce the amount of communication.

First, the network variable "SystemOff" defined in the building management host 1 is set to "forced stop". This network variable "System
"mOff" corresponds to the "whole stop command". On the other hand, the network variable “SystemOff” is set only for the communication node 61 that is the master node. In the same network (here, the building management communication network 2), the network variable with the same name is
Being coupled, the contents of network variables can be shared between different devices. Therefore, the building management host 1 outputs "Sy" which is its own output network variable.
If "forced stop" is written in "systemOff", "forced stop" is copied to the network variable "SystemOff" of the communication node 61 to which the variable is coupled. In response to this, the communication node 6 which is the master node
The air conditioning communication processor 61b of No. 1 reads the "whole stop command" signal from the building management communication processor 61a,
After storing the current operating states of the air conditioning system indoor units 90 to 9 m, communication packets of the air conditioning control network 8 are sequentially transmitted. As a result, the entire air conditioning equipment is stopped.

On the other hand, the communication node 6 which is the master node
When "Forced stop release" is written in the network variable "SystemOff" of No. 1, the operating state of each air conditioning system indoor unit 90-9m immediately before the forced stop is set based on the operating state information stored in memory at the forced stop. Please return to
The air-conditioning control commands such as the operation mode, the set temperature, and the remote control operation permission are sequentially transmitted to the respective air-conditioning system indoor units 90-9m. As a result, the air conditioning operation state immediately before the forced stop is restored.

As described above, the communication node 61 set as the master node is the other air conditioning system indoor units 90 to 90.
Since control commands such as stop and remote control operation prohibition are transmitted to 9 m respectively, control data is sent from a plurality of network variables to the air conditioning communication processor 61b.
Does not need to read sequentially, only one network variable "SystemOff" needs to be read. As a result, the number of network variables for building management communication can be saved and the communication for building management can be saved. Traffic can be reduced. In addition, the building management communication processor 61a and the air conditioning communication processor 61b
It is also possible to reduce the number of times of transmission between the processor and the processor.

The program for realizing the function of the processing unit in FIG. 1 is recorded in a computer-readable recording medium, and the program recorded in this recording medium is read by the computer system and executed to execute air conditioning. Control processing may be performed. The “computer system” mentioned here includes an OS and hardware such as peripheral devices. In addition, the “computer system” includes a homepage providing environment (or display environment) if a WWW system is used. The "computer-readable recording medium" means a flexible disk, a magneto-optical disk,
A portable medium such as a ROM or a CD-ROM, or a storage device such as a hard disk built in a computer system. Furthermore, "computer-readable recording medium"
Is a volatile memory (RAM) inside a computer system that serves as a server or client when a program is sent via a network such as the Internet or a communication line such as a telephone line, and holds the program for a certain period of time. Those that are present are also included.

Further, the above program may be transmitted from a computer system that stores the program in a storage device or the like to another computer system via a transmission medium or by a transmission wave in the transmission medium. Here, the "transmission medium" for transmitting the program refers to a medium having a function of transmitting information, such as a network (communication network) such as the Internet or a communication line (communication line) such as a telephone line. Further, the program may be a program for realizing some of the functions described above. further,
It may be a so-called difference file (difference program) that can realize the above-mentioned functions in combination with a program already recorded in the computer system.

[0038]

As described above, according to the present invention, when controlling an air conditioning facility via a communication network having a different communication protocol, the air conditioning facility can be controlled appropriately without increasing communication traffic. The effect that it becomes possible is obtained.

[Brief description of drawings]

FIG. 1 is a block diagram showing a configuration of an embodiment of the present invention.

FIG. 2 is an explanatory diagram showing an operation of the communication node 61 shown in FIG.

FIG. 3 is an explanatory diagram showing a configuration of a network variable.

FIG. 4 is a block diagram showing a configuration of a conventional building management system.

[Explanation of symbols]

1. Building management host 2. Building management communication network 3 ... communication device 4 ... Commercial power 5 ... Power supply 6 ... Communication node 7 ... Network connection point 8 ... Air conditioning control network 90-9m ... Air conditioning system indoor unit 31 ... communication device 61 to 6n ... communication node N1, N2 ... Internal network connection

─────────────────────────────────────────────────── ─── Continuation of front page (51) Int.Cl. ⁷ Identification code FI theme code (reference) H04Q 9/00 321 H04Q 9/00 321D H04L 13/00 305B F term (reference) 3L061 BA03 BA05 5K033 AA02 BA08 CB02 CB08 DA05 DB19 5K034 CC06 DD02 FF01 FF14 HH61 MM08 5K048 AA08 BA08 DA02 DA05 DC03 FA00 HA03

Claims (11)

[Claims] 1. A parallel processing type air conditioning control communication device for controlling operation of air conditioning equipment according to an instruction from a building management host computer for remote centralized control of equipment installed in a building. The control communication device is a building management backbone network to which the building management host computer is connected, and is different from the building management communication network in which the building management communication network using the first communication protocol and the air conditioning facility are connected. An air conditioning control network using a second communication protocol, and a control command received via the building management communication network using the first communication protocol,
And a communication device equipped with a communication node for converting the communication protocol control command into a communication command for transmission to the air conditioning facility via the air conditioning control network. A parallel processing type air conditioning control communication device, characterized in that the processing of equipment control is distributed by a plurality of communication nodes. 2. The communication device, wherein the plurality of communication nodes are mounted in one housing, and each of the building management communication network and the air conditioning control network has one connection terminal. Item 2. The parallel processing type air conditioning control communication device according to Item 1. 3. The building management communication processor, wherein the communication node communicates with the building management host computer using the first communication protocol, and the air conditioning control network using the second communication protocol. The parallel processing type air conditioning control communication device according to claim 1, comprising an air conditioning communication processor that performs communication, and an interface between communication processors that performs protocol conversion between the building management communication processor and the air conditioning communication processor. . 4. The parallel processing according to claim 3, wherein the air conditioning communication processor makes a plurality of control commands received by the building management communication processor into one packet and transmits the packet at predetermined time intervals. System air conditioning control communication device. 5. The air conditioning communication processor waits until the number of control commands received by the building management communication processor reaches a predetermined number, and when the predetermined number of control commands are received, the predetermined number of control commands are released. 4. The parallel processing type air conditioning control communication device according to claim 3, wherein the packets are transmitted as one packet. 6. The building management communication processor is connected with network variables set in the building management host computer, and controls the air conditioning equipment based on the combined network variables. The parallel processing type air conditioning control communication device described in. 7. The parallel processing system air conditioning control communication device according to claim 1, wherein the communication speed of the second communication protocol is lower than the communication speed of the first communication protocol. Processing system Air conditioning control communication device. 8. A parallel processing type air conditioning control communication method for controlling the operation of air conditioning equipment according to an instruction from a building management host computer for remote centralized control of equipment installed in a building, the parallel processing type air conditioning system. The control communication method is a building management backbone network to which the building management host computer is connected, and a step of receiving a control command via a building management communication network using a first communication protocol; There is a step of converting the control command of the air conditioning control network to which the air conditioning equipment is connected and a second communication protocol different from the building management communication network is used, and a step of transmitting the converted control command to the air conditioning equipment. In each of the above processes, a plurality of processes are simultaneously performed in parallel. Control communication method. 9. The parallel processing type air conditioning control communication method according to claim 8, wherein a communication speed of the second communication protocol is lower than a communication speed of the first communication protocol. Processing method Air-conditioning control communication method. 10. In response to an instruction from a building management host computer for remote centralized control of equipment provided in the building,
A parallel processing type air conditioning control communication program for controlling operation of an air conditioning facility, wherein the parallel processing type air conditioning control communication program is a building management backbone network to which the building management host computer is connected, and a first communication protocol Receiving a control command via a building management communication network used for controlling an air conditioning control network to which the air conditioning equipment is connected and which uses a second communication protocol different from the building management communication network. A parallel processing type air conditioning control characterized by comprising a process of converting into a command and a process of transmitting the converted control command to the air conditioning equipment, wherein each of the processes causes a computer to simultaneously perform a plurality of processes in parallel. Communication program. 11. The parallel processing system air conditioning control communication program according to claim 10, wherein the communication speed of the second communication protocol is lower than the communication speed of the first communication protocol. Processing method Air conditioning control communication program.