JPH01212093A - Thermal equipment control signal transmitting system - Google Patents

Thermal equipment control signal transmitting system

Info

Publication number
JPH01212093A
JPH01212093A JP63036215A JP3621588A JPH01212093A JP H01212093 A JPH01212093 A JP H01212093A JP 63036215 A JP63036215 A JP 63036215A JP 3621588 A JP3621588 A JP 3621588A JP H01212093 A JPH01212093 A JP H01212093A
Authority
JP
Japan
Prior art keywords
data
station
slave
transmission
assigned
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP63036215A
Other languages
Japanese (ja)
Other versions
JPH0793746B2 (en
Inventor
Masanori Oda
小田 雅典
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Daikin Industries Ltd
Original Assignee
Daikin Industries Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Daikin Industries Ltd filed Critical Daikin Industries Ltd
Priority to JP63036215A priority Critical patent/JPH0793746B2/en
Publication of JPH01212093A publication Critical patent/JPH01212093A/en
Publication of JPH0793746B2 publication Critical patent/JPH0793746B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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  • Air Conditioning Control Device (AREA)
  • Small-Scale Networks (AREA)
  • Selective Calling Equipment (AREA)

Abstract

PURPOSE:To improve the transmission efficiency of data by constantly recognizing the number of slave stations by a main station and changing the transmission/reception cycle of the data of the number of the sets of connections. CONSTITUTION:When there is the slave station where a transmission sequence is not assigned, a polling is executed precedingly to a timing signal in the sequence of the address of the slave station to assign the transmission sequence succeeding to the transmission sequence already assigned to other slave station to the slave station having a response and the slave station to which the transmission sequence is assigned receives the timing signal and transmits the data to the main station according to the assigned transmission sequence. In such a way, the main station constantly recognizes the number of the connections of the slave stations and changes the transmission/reception cycle of the data according to the number of the sets of the connections, thereby, when the number of the sets of the connections is small, the time of the transmission/reception cycle is shortened and only when it is required for the slave station to which the data should be transmitted, the data is transmitted from the main station, so that the transmission efficiency of the data is improved.

Description

【発明の詳細な説明】 〈産業上の利用分野〉 この発明は、空気調和装置、温水器等の熱機器における
主局と複数の従局との間で一つの伝送路を介してデータ
を送信するようにした熱機器用制御信号伝送方式に関す
る。
[Detailed Description of the Invention] <Industrial Application Field> This invention transmits data via one transmission line between a main station and a plurality of slave stations in thermal equipment such as air conditioners and water heaters. The present invention relates to a control signal transmission method for thermal equipment.

〈従来の技術〉 従来、この種の熱機器用制御信号伝送方式としては、第
4図に示すようなものがある(特開昭61−22824
6号公報)。この熱機器用制御信号伝送方式は、空調調
和機の主局としての室外ユニット41と従局としての室
内ユニット42.43および上記室内ユニットに対応す
るリモコン44.45を一つの信号線46で接続してい
る。そして、第5図に示すようにポーリングを行う。す
なわち主制御部である室外ユニット41がまずリモコン
44を制御信号Mlによりアドレス指定し、リモコン4
4で操作された内容を制御信号Slとして返信させる。
<Prior art> Conventionally, as a control signal transmission system for this type of thermal equipment, there is a system as shown in FIG.
Publication No. 6). This control signal transmission method for thermal equipment connects an outdoor unit 41 as a main station of an air conditioner, indoor units 42 and 43 as slave stations, and remote controllers 44 and 45 corresponding to the indoor units using a single signal line 46. ing. Then, polling is performed as shown in FIG. That is, the outdoor unit 41, which is the main control section, first specifies the address of the remote controller 44 using the control signal Ml, and then
The contents operated in step 4 are returned as a control signal Sl.

次に、リモコン45を制御信号M2によりアドレス指定
し、リモコン45で操作された内容を制御信号S2とし
て返信させる。次に、室内ユニット42ヘアドレス指定
した制御信号M3を送信し、室内ユニット42からこの
ユニットの運転状態等を示す制御信号S3を返信させる
Next, the remote controller 45 is addressed by the control signal M2, and the contents operated by the remote controller 45 are sent back as the control signal S2. Next, a control signal M3 specifying the address is transmitted to the indoor unit 42, and the indoor unit 42 returns a control signal S3 indicating the operating status of this unit.

次に、室内ユニット43ヘアドレス指定した制御信号M
4を送信し、室内ユニット43からのこのユニットの運
転状態を示す制御信号S4を返信さ仕る。このように、
室外ユニット41が室内ユニッ)42.43およびリモ
コン44.45に対して所定の順序で制御信号を送信し
、各室内ユニット42.43およびリモコン44.45
が上記制御信号に応じて室外ユニット31に返信するよ
うにしている。従って、室外ユニット41と一つの室内
ユニットあるいはリモコンとの間で制御信号の送受を行
っている時は、他の室内ユニットあるいはリモコンは室
外ユニット41に対して制御信号を送信しないので、信
号線46に複数の制御信号が同時に出力されず制御信号
どうしの混信がなく確実に制御信号の送受信が行える。
Next, a control signal M that specifies the address to the indoor unit 43 is sent.
4, and a control signal S4 indicating the operating status of this unit from the indoor unit 43 is sent back. in this way,
The outdoor unit 41 transmits control signals to the indoor units 42.43 and remote controllers 44.45 in a predetermined order, and each indoor unit 42.43 and remote controller 44.45
is sent back to the outdoor unit 31 in response to the control signal. Therefore, when a control signal is being transmitted and received between the outdoor unit 41 and one indoor unit or remote controller, the other indoor unit or remote controller does not transmit a control signal to the outdoor unit 41, so the signal line 46 Since a plurality of control signals are not output at the same time, there is no interference between control signals, and control signals can be reliably transmitted and received.

〈発明が解決しようとする課題〉 しかしながら、上記従来の熱機器用制御信号伝送方式で
は、主局としての室外ユニット41と従局としての室内
ユニット42.43およびリモコン44.45との間で
所定の順序で順次データの送受信を行うようにしている
ので、従局のいずれかが電源ダウン等によりデータの送
受信ができない場合や接続状態にない場合においても、
必ずその従局に対して主局からデータが送信され、また
、データを送信する必要のない従局に対しても常にデー
タが送信されるので、必要以上に伝送時間がかかり、デ
ータの伝送効率が悪いという問題がある。
<Problems to be Solved by the Invention> However, in the above conventional control signal transmission system for thermal equipment, a predetermined communication occurs between the outdoor unit 41 as the main station, the indoor units 42, 43 and the remote controller 44, 45 as the slave stations. Since data is sent and received in sequence, even if one of the slave stations is unable to send or receive data due to a power outage, etc., or is not connected,
Data is always sent from the master station to its slave stations, and data is also always sent to slave stations that do not need to send data, so it takes more time to transmit than necessary and data transmission efficiency is poor. There is a problem.

そこで、この発明の目的は、主局が従局の接続数を常に
確認し、接続台数によってデータの送受信サイクルを変
更することにより、接続台数が少ない場合には送受信サ
イクルの時間を短くし、また、データを送信する必要が
ある従局に対してだけ、必要なときのみ、主局からデー
タを送信するようにして、効率よくデータの伝送を行う
ことができる熱機器用制御信号伝送方式を提供すること
にある。
Therefore, an object of the present invention is to have the master station always check the number of slave stations connected and change the data transmission/reception cycle depending on the number of connected slave stations, thereby shortening the transmission/reception cycle time when the number of connected slave stations is small. To provide a control signal transmission system for thermal equipment capable of efficiently transmitting data by transmitting data from a master station only to slave stations that need to transmit data and only when necessary. It is in.

〈課題を解決するための手段〉 上記目的を達成するため、この発明は、主局と複数の従
局との間で一つの伝送路を介してデータを送信するよう
にした熱機器用制御信号伝送方式において、主局がデー
タの送信に先立って複数の従局に対して上記従局のアド
レス順にポーリングを行い、返信があった従局に対して
そのアドレス順にデータの送信順序を割り当て、上記送
信順序を割り当てた従局のうちデータが送信されるべき
従局に対しては、そのデータを上記送信順序に従ってタ
イミング信号に先行して送信する一方、全従局に対して
送信するべきデータがない場合は主局がタイミング信号
のみを送信し、また、送信順序の割り当てられていない
従局がある場合には、その従局のアドレス順にタイミン
グ信号に先行してポーリングを行い、返信があった従局
に対してそのアドレス順に、すでに他の従局に割り当て
た送信順に続く送信順序を割り当て、上記送信順序を割
り当てられた従局がタイミング信号をうけて上記割り当
てられた送信順序に従って主局にデータを送信するよう
にしたことを特徴としている。
<Means for Solving the Problems> In order to achieve the above object, the present invention provides a control signal transmission method for thermal equipment in which data is transmitted between a main station and a plurality of slave stations via one transmission path. In this method, before transmitting data, the master station polls multiple slave stations in the order of the addresses of the slave stations mentioned above, and assigns the data transmission order to the slave stations that have responded in the order of their addresses, and then assigns the above transmission order. Among the slave stations, the data is transmitted to the slave station to which the data should be transmitted in advance of the timing signal according to the transmission order described above, while if there is no data to be transmitted to all slave stations, the master station If there is a slave station that only transmits a signal and has no transmission order assigned, polling is performed in advance of the timing signal in the order of the address of the slave station, and polling is performed for the slave stations that have responded in the order of their addresses. The system is characterized in that a transmission order following the transmission order assigned to other slave stations is assigned, and the slave stations assigned the transmission order receive a timing signal and transmit data to the master station in accordance with the assigned transmission order. .

〈作用〉 主局がデータの送信に先立って複数の従局に対して上記
従局のアドレス順にポーリングを行い、返信があった従
局に対してそのアドレス順にデータの送信順序を割り当
て、上記送信順序を割り当てた従局のうちデータが送信
されるべき従局に対しては、そのデータを上記送信順序
に従ってタイミング信号に先行して送信する一方、全従
局に対して送信するべきデータがない場合は主局がタイ
ミング信号のみを送信し、また、送信順序の割り当てら
れていない従局がある場合には、その従局のアドレス順
にタイミング信号に先行してポーリングを行い、返信が
あった従局に対してそのアドレス順に、すでに他の従局
に割り当てた送信順に続く送信順序を割り当て、上記送
信順序を割り当てられた従局がタイミング信号をうけて
上記割り当てられた送信順序に従って主局にデータを送
信する。このように、主局が従局の接続数を常に確認し
、接続台数によってデータの送受信サイクルを変更する
ことにより、接続台数が少ない場合には送受信サイクル
の時間を短くし、また、データを送信する必要がある従
局に対してだけ、必要なときのみ、主局からデータを送
信するのでデータの伝送効率がよくなる。
<Operation> Before transmitting data, the master station polls multiple slave stations in the order of the addresses of the slave stations mentioned above, and assigns the data transmission order to the slave stations that have responded in the order of their addresses, and then assigns the above transmission order. Among the slave stations, the data is transmitted to the slave station to which the data should be transmitted in advance of the timing signal according to the transmission order described above, while if there is no data to be transmitted to all slave stations, the master station If there is a slave station that only transmits a signal and has no transmission order assigned, polling is performed in advance of the timing signal in the order of the address of the slave station, and polling is performed for the slave stations that have responded in the order of their addresses. A transmission order subsequent to the assigned transmission order is assigned to other slave stations, and the slave stations to which the transmission order is assigned receive the timing signal and transmit data to the master station in accordance with the assigned transmission order. In this way, the master station constantly checks the number of connected slave stations and changes the data transmission/reception cycle depending on the number of connected devices, thereby shortening the transmission/reception cycle time when the number of connected devices is small, and transmitting data. Since the master station transmits data only to the necessary slave stations and only when necessary, data transmission efficiency is improved.

〈実施例〉 以下、この発明を図示の実施例により詳細に説明する。<Example> Hereinafter, the present invention will be explained in detail with reference to illustrated embodiments.

第1図において、10は空調装置のリモコンである主局
、11−14は上記空調装置の室内機である従局l〜4
.15は上記主局と従局1〜4との間のデータを伝送す
る伝送路である。
In FIG. 1, 10 is a main station that is a remote control for the air conditioner, and 11-14 are slave stations 1 to 4 that are indoor units of the air conditioner.
.. Reference numeral 15 denotes a transmission line for transmitting data between the main station and the slave stations 1 to 4.

上記主局と従局l〜4との間では第2図に示すフレーム
構成のデータが送受信される。第2図において、21は
これからデータを送ることを表わすリーダコード(LD
R)、22は送信側が主局か従局かを表わす主局/従局
区別データ(M/S)、23は従局のアドレス(AD)
、24は従局の送信順序(TNO)、25は受信アクノ
リッジ(ACK)、26は送信データを示すテキスト(
TEXT)、27はブロックチエツクコード(BCC)
、2Bはデータブロックの終了を表わすトレーラコード
(TRL)である。
Data having a frame structure shown in FIG. 2 is transmitted and received between the master station and slave stations 1 to 4. In Figure 2, 21 is a reader code (LD) indicating that data will be sent.
R), 22 is master station/slave station distinction data (M/S) indicating whether the transmitting side is a master station or a slave station, and 23 is the slave station address (AD).
, 24 is the transmission order (TNO) of the slave station, 25 is the reception acknowledgement (ACK), and 26 is the text indicating the transmission data (
TEXT), 27 is block check code (BCC)
, 2B is a trailer code (TRL) indicating the end of the data block.

上記データの送受信は主局と従局l〜4との間で第3図
に示すような手順で行われる。
Transmission and reception of the above data is performed between the master station and slave stations 1 to 4 according to the procedure shown in FIG.

まず、主局から従局にデータを送信する前に、従局に対
して従局のデータ送信順序を割り当てるポーリングを行
う。すなわち、第3図(A)において、主局は、まずア
ドレスが1番目の従局lに対して、主局/従局区別デー
タCM/E;)を“主局(M)”とし、アドレス(AD
)を“ビとし、送信順序(TNo)を“ビとしたデータ
を送信する。上記主局からのデータを受信した従局1は
AD=1.TNO=l、M/S=Sとしたデータを主局
に返信すると共に、送信順序を“ビと記憶する。主局は
上記従局lからの返信を所定時間18以内に受信すると
、従局1の送信順序を“ビと記憶し、次のアドレスの従
局2にAD=2.7NO=2としたデータを送信する。
First, before data is transmitted from the master station to the slave station, polling is performed to assign the data transmission order of the slave stations to the slave stations. That is, in FIG. 3(A), the master station first sets the master station/slave station distinction data CM/E;
) is set to "B", and the data whose transmission order (TNo) is set to "B" is transmitted. The slave station 1 that received the data from the master station has AD=1. It sends back the data with TNO=l and M/S=S to the master station, and stores the transmission order as "B".When the master station receives the reply from the slave station 1 within a predetermined time of 18, it returns the data of slave station 1. The transmission order is stored as "B" and the data with AD=2.7NO=2 is transmitted to the slave station 2 at the next address.

従局2はこのデータを受信し、AD=2.TNO=2と
したデータを主局に返信し、送信順序を“2”と記憶す
る。この従局2からの返信を所定時間18以内に受信し
た主局は従局2の送信順序を“2”と記憶し、次のアド
レスの従局3にAD=3.TNO=3としたデータを送
信する。この従局3からは上記所定時間T、を過ぎても
返信がないので同じデータを再送する。しかし、それで
も従局3からは所定時間13以内に返信がないので再度
同じデータを再送する。そして、上記2回の再送に対し
ても従局3からは返信がないので、次のアドレスの従局
4に対してAD=4゜TNO=3としたデータを送信す
る。従局4はこのデータを受信すると自局に割り当てら
れた送信順序を“3″と記憶し、AD=4.7NO=3
としたデータを主局に返信する。主局は従局4からの返
信を受信して従局4の送信順序を“3“と記憶する。
Slave station 2 receives this data and sets AD=2. The data with TNO=2 is returned to the main station, and the transmission order is stored as "2". The master station that receives this reply from the slave station 2 within the predetermined time 18 stores the transmission order of the slave station 2 as "2" and sends the slave station 3 at the next address AD=3. Send data with TNO=3. Since there is no reply from this slave station 3 even after the predetermined time T, the same data is retransmitted. However, since there is still no reply from the slave station 3 within the predetermined time 13, the same data is retransmitted again. Since there is no reply from the slave station 3 to the above two retransmissions, data with AD=4°TNO=3 is transmitted to the slave station 4 at the next address. When slave station 4 receives this data, it stores the transmission order assigned to it as "3", and AD=4.7NO=3.
The data is sent back to the main station. The master station receives the reply from the slave station 4 and stores the transmission order of the slave station 4 as "3".

このように、主局からのデータを従局が受信すると、こ
のデータによって自局に割り当てられた送信順序を記憶
し、主局に対して返信する。そして、主局はデータを送
信してから所定時間18以内に従局からの返信を受信し
た場合は、次のアドレスの従局に対して次の送信順序を
指定したデータを送信するが、一定時間T3を過ぎても
従局からの返信を受信しなかった場合は、同じ従局に対
して同じ送信順序を指定したデータを2回まで再送し、
従局から返信があれば次のアドレスの従局に対して次の
送信順序を指定したデータを送信し、従局からの返信が
なければ次のアドレスの従局に対して同じ送信順序を指
定したデータを送信する。
In this way, when the slave station receives data from the master station, it stores the transmission order assigned to itself based on this data and sends it back to the master station. If the master station receives a reply from the slave station within a predetermined time 18 after transmitting the data, it transmits data specifying the next transmission order to the slave station at the next address, but for a fixed time T3 If no reply is received from the slave station after this time, the data will be retransmitted up to two times with the same transmission order specified to the same slave station.
If there is a reply from the slave station, it will send the data specifying the next transmission order to the slave station at the next address, and if there is no reply from the slave station, it will send the data specifying the same transmission order to the slave station at the next address. do.

そして、このポーリングにより、主局との間でデータの
送受信が可能な状態にある従局(以下、接続機という)
に対してデータの送信順序が割り当てられる。
Through this polling, a slave station (hereinafter referred to as a connecting device) that is able to send and receive data with the master station
The data transmission order is assigned to

上記ポーリングが−通り終了すると、第3図(B)に進
み、主局は上記接続機からのデータの受信待ちとなる。
When the above polling is completed, the process proceeds to FIG. 3(B), and the main station waits to receive data from the connected device.

そして、上記接続機は、上記従局4が主局に対して返信
した後、所定時間T、の間リコーダコード(L D R
)を検知しなければ、上記割り当てられた送信順序に従
い、従局1から順に所定時間T8間隔で主局に対しデー
タを送信する。主局は上記所定時間T、が経過してから
上記接続機1台当り所定時間T4の時間制限を設け、(
接続機台数)−(返信台数)−(T、タイムオーバ回数
)=0となった後、所定時間T5後にデータの送信を開
始する。そして、各接続機に対して送信すべきデータが
あればそのアドレスの小さい順にT3間隔で順次データ
を送信する。そして、接続機に対して送信が終了すると
T、時間後に非接続機が立上って接続状態になったかど
うかを確認するためのポーリングを行う。この非接続ポ
ーリングは非接続機のアドレスの小さい順に、データの
送信終了毎に1台分について行う。第3図(B)は、上
記所定時間T、経過後従局lに対してのみデータを送信
する場合を示し、従局lにデータを送信した後、11時
間後に非接続機である従局3に対してTNO=4とした
データを送信する場合を示している。
Then, the connecting device transmits the recorder code (L D R
) is not detected, the slave station 1 transmits data to the master station at intervals of a predetermined time T8 in accordance with the above-mentioned assigned transmission order. The main station sets a time limit of a predetermined time T4 for each connected device after the predetermined time T has elapsed, and (
After the number of connected devices)-(number of reply devices)-(T, number of time-overs)=0, data transmission is started after a predetermined time T5. If there is data to be transmitted to each connected device, the data is transmitted sequentially at intervals of T3 in descending order of the address. When the transmission to the connected device is completed, the unconnected device wakes up after a period of time T and performs polling to check whether it has become connected. This unconnected polling is performed for each unconnected device in ascending order of address, each time data transmission is completed. FIG. 3(B) shows a case where data is transmitted only to slave station 1 after the predetermined time T has elapsed, and 11 hours after data is transmitted to slave station 1, data is sent to slave station 3, which is an unconnected machine. This shows the case where data with TNO=4 is transmitted.

第3図(C)は主局から従局3に上記TNO=4のデー
タを送信したが、従局3から返信がなく、第3図(B)
と同様T1時間後に接続機である従局1.2.4から主
局にデータが送られた状態を示している。そして、主局
がそのデータを受信した後16時間後に従局4に対しデ
ータを送信し、上記返信がなかった従局3に対して再度
TNO=4のデータを送信した状態を示している。
Figure 3 (C) shows that the master station sent the above data with TNO = 4 to slave station 3, but there was no reply from slave station 3, and Figure 3 (B)
Similarly, after time T1, data is sent from slave station 1.2.4, which is a connected device, to the master station. Then, 16 hours after the master station received the data, the data is transmitted to the slave station 4, and the data of TNO=4 is again transmitted to the slave station 3 that did not receive the above reply.

そし七、第3図(D)において、遅れて立上がった従局
3は上記主局から送られた自己アドレスと一致するデー
タを受信し、T、時間後に主局へデータを送信する。主
局は13時間以内に上記従局3からのデータを受信する
と、従局3は接続状態になったものと認知する。従局3
の立上がりにより4台の従局は全て接続状態になったた
め、T。
7. In FIG. 3(D), the slave station 3 that started up after a delay receives data that matches its own address sent from the master station, and transmits the data to the master station after T time. When the master station receives data from the slave station 3 within 13 hours, the master station recognizes that the slave station 3 is in a connected state. Follower 3
Since all four slave stations are now connected due to the rise of T.

時間後に4台の従局からその割り当てられた送信順序に
従い、主局に対し順次データが送られる。
After a period of time, data is sequentially sent from the four slave stations to the master station according to the assigned transmission order.

主局は上記4つの従局からデータを受信したのちは非接
続ポーリングを行う従局がないため、従局からのデータ
の送信タイミングをとるためにAD=0としたデータを
送信する。
After receiving data from the four slave stations, the master station transmits data with AD=0 in order to determine the timing for transmitting data from the slave stations since there are no slave stations to perform disconnected polling.

第3図(E)は上記4つの従局のうち、従局2が電源ダ
ウンしてデータを送信してこない場合を示している。こ
の場合は、従局2の次の送信順序を割り当てられた従局
4が従局1からのデータを受信してから所定時間T4待
った後、従局2のデータを受信しなければデータを送信
する。
FIG. 3(E) shows a case where among the four slave stations, slave station 2 is powered down and does not transmit data. In this case, after waiting for a predetermined time T4 after receiving the data from slave station 1, slave station 4, which is assigned the next transmission order after slave station 2, transmits the data if it does not receive the data from slave station 2.

第3図(F)は送受信を1サイクルとして連続して10
サイクルの間、上記従局2が゛データを送信しなかった
場合に、主局が従局2を非接続と判断して従局2を除く
3つの従局に対して送信順序の再割り当てを行うことを
示している。すなわち、従局4に対してTNO=2を、
従局3に対してはTNO=3を割り当てる。そして、従
局2を除く3つの従局は上記新しく割り当てられた送信
順序に従って主局にデータを送信する。その後、主局は
上記従局2に対して非接続ポーリングを行う。
Figure 3 (F) shows 10 consecutive transmissions and receptions as one cycle.
Indicates that if the slave station 2 does not transmit data during the cycle, the master station determines that slave station 2 is not connected and reassigns the transmission order to the three slave stations excluding slave station 2. ing. That is, TNO=2 for slave station 4,
TNO=3 is assigned to slave station 3. Then, the three slave stations except slave station 2 transmit data to the master station in accordance with the newly assigned transmission order. Thereafter, the master station performs non-connection polling on the slave station 2.

このように、主局が従局の接続数を常に確認し、接続台
数によってデータの送受信サイクルを変更することによ
り、接続台数が少ない場合には送受信サイクルの時間を
短くし、また、データを送信する必要がある従局に対し
てだけ、必要なときのみ主局からデータを送信するよう
にしているので従来例に比べてデータの伝送効率をよく
することができる。
In this way, the master station constantly checks the number of connected slave stations and changes the data transmission/reception cycle depending on the number of connected devices, thereby shortening the transmission/reception cycle time when the number of connected devices is small, and transmitting data. Since data is transmitted from the master station only to necessary slave stations and only when necessary, data transmission efficiency can be improved compared to the conventional example.

〈発明の効果〉 以上より明らかなように、この発明の熱機器用制御信号
伝送方式は、主局がデータの送信に先立って複数の従局
に対して上記従局のアドレス順にポーリングを行い、返
信があった従局に対してそのアドレス順にデータの送信
順序を割り当て、上記送信順序を割り当てた従局のうち
データが送信されるべき従局に対しては、そのデータを
上記送信順序に従ってタイミング信号に先行して送信す
る一方、全従局に対して送信するべきデータがない場合
は主局がタイミング信号のみを送信し、また、送信順序
の割り当てられていない従局がある場合には、その従局
のアドレス順にタイミング信号に先行してポーリングを
行い、返信があった従局に対してそのアドレス順に、す
でに他の従局に割り当てた送信順に続く送信順序を割り
当て、上記送信順序を割り当てられた従局がタイミング
信号をうけて上記割り当てられた送信順序に従って主局
にデータを送信するようにして、主局が従局の接続数を
常に確認し、接続台数によってデータの送受信サイクル
を変更することにより、接続台数が少ない場合には送受
信サイクルの時間を短くし、また、データを送信する必
要がある従局に対してだけ、必要なときのみ主局からデ
ータを送信するようにしているので、従来例に比べてデ
ータの伝送効率をよくすることができる。
<Effects of the Invention> As is clear from the above, in the control signal transmission system for thermal equipment of the present invention, the main station polls a plurality of slave stations in the order of the addresses of the slave stations before transmitting data, and no replies are received. The data transmission order is assigned to the slave stations in the order of their addresses, and among the slave stations to which the above transmission order has been assigned, the data is sent to the slave station to which the data is to be transmitted in accordance with the above transmission order, prior to the timing signal. On the other hand, if there is no data to be sent to all slave stations, the main station will transmit only the timing signal, and if there are slave stations to which the transmission order has not been assigned, the timing signal will be sent in the order of the addresses of the slave stations. Polling is performed in advance of , and the slave stations that have responded are assigned a transmission order that follows the transmission order already assigned to other slave stations in the order of their addresses, and the slave stations assigned the above transmission order receive the timing signal and perform the above transmission order. By transmitting data to the master station according to the assigned transmission order, the master station constantly checks the number of connected slave stations, and changes the data transmission/reception cycle depending on the number of connected devices. The cycle time is shortened, and data is sent from the master station only to slave stations that need to send data, and only when necessary, improving data transmission efficiency compared to conventional methods. can do.

【図面の簡単な説明】[Brief explanation of the drawing]

第1図はこの発明の熱機器用制御信号伝送方式の一実施
例を説明するための接続図、第2図は上記実施例におけ
る主局と従局との間で送信されるデータのフレーム構成
を説明する図、第3図は上記実施例におけるデータの伝
送順序を説明する図、第4図は従来の熱機器用制御信号
伝送方式を説明するための接続図、第5図は上記従来例
におけるデータの伝送順序を説明する図である。 10・・・主局、11−14・・・従局、15・・・伝
送路。 特 許 出 願 人  ダイキン工業株式会社代 理 
人 弁理士  青白 葆“ ほか2名第1図 第2区 第4図 第511
Fig. 1 is a connection diagram for explaining an embodiment of the control signal transmission method for thermal equipment of the present invention, and Fig. 2 shows the frame structure of data transmitted between the master station and slave station in the above embodiment. FIG. 3 is a diagram for explaining the data transmission order in the above embodiment, FIG. 4 is a connection diagram for explaining the conventional control signal transmission method for thermal equipment, and FIG. 5 is a diagram for explaining the conventional control signal transmission method for thermal equipment. FIG. 2 is a diagram illustrating a data transmission order. 10...Main station, 11-14...Slave station, 15...Transmission path. Patent applicant Agent: Daikin Industries, Ltd.
People Patent Attorney Qing Bai Ao “ and 2 others Figure 1 District 2 Figure 4 Figure 511

Claims (2)

【特許請求の範囲】[Claims] (1)主局(10)と複数の従局(11、12、13、
14)との間で一つの伝送路を介してデータを送信する
ようにした熱機器用制御信号伝送方式において、 主局(10)がデータの送信に先立って複数の従局(1
1、12、13、14)に対して上記従局のアドレス順
にポーリングを行い、返信があった従局に対してそのア
ドレス順にデータの送信順序を割り当て、 上記送信順序を割り当てた従局のうちデータが送信され
るべき従局に対しては、そのデータを上記送信順序に従
ってタイミング信号に先行して送信する一方、全従局に
対して送信するべきデータがない場合は主局(10)が
タイミング信号のみを送信し、 また、送信順序の割り当てられていない従局がある場合
には、その従局のアドレス順にタイミング信号に先行し
てポーリングを行い、返信があった従局に対してそのア
ドレス順に、すでに他の従局に割り当てた送信順に続く
送信順序を割り当て、上記送信順序を割り当てられた従
局がタイミング信号をうけて上記割り当てられた送信順
序に従って主局(10)にデータを送信するようにした
ことを特徴とする熱機器用制御信号伝送方式。
(1) Main station (10) and multiple slave stations (11, 12, 13,
In a control signal transmission method for thermal equipment in which data is transmitted via a single transmission path between the main station (10) and the
1, 12, 13, 14) in the order of the addresses of the slave stations mentioned above, and assign data transmission order to the slave stations that received a reply in the order of their addresses, and among the slave stations assigned the above transmission order, the data is transmitted. The data is transmitted to the slave stations that should receive the data in advance of the timing signal according to the transmission order described above, while if there is no data to be transmitted to all slave stations, the master station (10) transmits only the timing signal. In addition, if there is a slave station to which the transmission order has not been assigned, polling is performed in advance of the timing signal in the order of the address of the slave station, and the slave stations that have responded are polled in the order of their addresses, which have already been sent to other slave stations. A transmission order following the assigned transmission order is assigned, and the slave station assigned the transmission order receives a timing signal and transmits data to the main station (10) in accordance with the assigned transmission order. Control signal transmission method for equipment.
(2)上記送信順序を割り当てた従局からのデータの送
信が所定回数なかった場合に、そのデータの送信がなか
った従局を除いて、送信順序の割り当てをやり直すよう
にした特許請求の範囲第1項に記載の熱機器用制御信号
伝送方式。
(2) If the slave station assigned the transmission order does not transmit data a predetermined number of times, the transmission order is reassigned except for the slave station to which the data was not transmitted. The control signal transmission method for thermal equipment described in .
JP63036215A 1988-02-18 1988-02-18 Control signal transmission system for thermal equipment Expired - Fee Related JPH0793746B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP63036215A JPH0793746B2 (en) 1988-02-18 1988-02-18 Control signal transmission system for thermal equipment

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP63036215A JPH0793746B2 (en) 1988-02-18 1988-02-18 Control signal transmission system for thermal equipment

Publications (2)

Publication Number Publication Date
JPH01212093A true JPH01212093A (en) 1989-08-25
JPH0793746B2 JPH0793746B2 (en) 1995-10-09

Family

ID=12463537

Family Applications (1)

Application Number Title Priority Date Filing Date
JP63036215A Expired - Fee Related JPH0793746B2 (en) 1988-02-18 1988-02-18 Control signal transmission system for thermal equipment

Country Status (1)

Country Link
JP (1) JPH0793746B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107270484A (en) * 2017-06-26 2017-10-20 珠海格力电器股份有限公司 Air conditioning system and data query response method and device thereof

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107270484A (en) * 2017-06-26 2017-10-20 珠海格力电器股份有限公司 Air conditioning system and data query response method and device thereof

Also Published As

Publication number Publication date
JPH0793746B2 (en) 1995-10-09

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