JPH01180662A - Data transmission unit - Google Patents

Data transmission unit

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Publication number
JPH01180662A
JPH01180662A JP63003210A JP321088A JPH01180662A JP H01180662 A JPH01180662 A JP H01180662A JP 63003210 A JP63003210 A JP 63003210A JP 321088 A JP321088 A JP 321088A JP H01180662 A JPH01180662 A JP H01180662A
Authority
JP
Japan
Prior art keywords
equipment
terminal equipment
terminal
terminal device
control
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.)
Pending
Application number
JP63003210A
Other languages
Japanese (ja)
Inventor
Izumi Narita
成田　泉
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.)
Canon Inc
Original Assignee
Canon Inc
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 Canon Inc filed Critical Canon Inc
Priority to JP63003210A priority Critical patent/JPH01180662A/en
Publication of JPH01180662A publication Critical patent/JPH01180662A/en
Pending legal-status Critical Current

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Abstract

PURPOSE:To execute a selection control without setting the numbers inherent in respective equipment by a device for setting equipment numbers such as a switch by connecting a control equipment with terminal equipment by cables and thus, setting automatically identification information inherent in the respective types of terminal equipment. CONSTITUTION:In a data transmission unit in which plural terminal equipment 2 and 3 are connected to a control equipment 1 and data are transmitted and received between the control equipment and the arbitrary terminal equipment 2 or 3, the arbitrary terminal equipment 2 or 3 is selected by the identification information inherent in the respective terminal equipment 2 and 3 set by connecting the control equipment 1 with the terminal equipment 2 and 3 by cables 4A, 4B and 5. A storage device such as an optical disk, an input output device such as a console and a printing device such as a printer can be used as the terminal equipment. Thus, by only connecting the control equipment 1 with the terminal equipment 2 and 3, the identification information inherent in the respective terminal equipment can be set automatically.

Description

【発明の詳細な説明】 ［産業−１−の利用分野］ 本発明は、制御機器に複数の端末機器をデイジ−チェー
ン方式により接続したデータ伝送装置に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Application in Industry-1-] The present invention relates to a data transmission device in which a plurality of terminal devices are connected to a control device using a daisy chain method.

［従来の技術及び問題点］ 従来、この神のデータ伝送装置で任意の端末機器を選択
するには、各端末機器に各機器固有の機器番号を予め設
定しておき、制御機器からこの機器部りを選択するため
の信号を送出することで任、ａ：の端末機器との接続を
図っていた。[Prior Art and Problems] Conventionally, in order to select any terminal device using this divine data transmission device, a device number unique to each device is set in advance for each terminal device, and this device section is called from the control device. By sending out a signal to select the option, the device was trying to connect with the terminal device of A:.

しかし、Ｐｉｉ器番号を設定するには、各端末機器に機
器番号設定用の装置を設け、この装置に各機器毎に異な
る機器番−シを予め設定しなければならないという問題
点があった。However, in order to set the Pii device number, there is a problem in that each terminal device must be provided with a device number setting device, and a different device number must be set in advance for each device in this device.

［問題点を解決するための手段１ 本発明によるデータ伝送装置は、制御機器に複数の端末
機器を接続し１前記制御機器と任意の端末機器との間で
データの送受を行なうデータ伝送装置において、ｎｉｉ
記任意の端末機器の選択は、前記制御機器と１１；Ｉ記
端末機器とをケーブルで接続することで設定されるＯ１
ｊ記各端末機器固有の識別情報によりなされることを特
徴とする。[Means for Solving the Problems 1] A data transmission device according to the present invention is a data transmission device that connects a plurality of terminal devices to a control device and transmits and receives data between the control device and any terminal device. , nii
The selection of the arbitrary terminal device is set by connecting the control device and the terminal device 11; I with a cable.
(j) The identification information is unique to each terminal device.

［作　用コ 本発明によれば、制御機器と端末機器とをケーブルで接
続するのみで各端末機器固有の識別情報を自動的に設定
することができる。[Function] According to the present invention, identification information unique to each terminal device can be automatically set simply by connecting the control device and the terminal device with a cable.

［実施例］ 以下、図面を参照して本発明の詳細な説明する。[Example] Hereinafter, the present invention will be described in detail with reference to the drawings.

第１図は１本発明によるデータ伝送装置の一実施例を示
すブロック図である。FIG. 1 is a block diagram showing an embodiment of a data transmission device according to the present invention.

同図において、制御機器ｌ、端末機器２及び端末機器３
はデイジ−チェーン方式によりこれらの順に接続されて
いる。制御機器ｌと端末機器２とは一対のケーブル４Ａ
及び４Ｂを介して接続され、端末機器２と端末機器３と
はケーブル５を介して接続されている。In the figure, a control device 1, a terminal device 2, and a terminal device 3
are connected in this order in a daisy chain manner. The control device 1 and the terminal device 2 are connected to a pair of cables 4A.
and 4B, and the terminal device 2 and the terminal device 3 are connected via a cable 5.

制御機器！はドライバｌＯを有し、このドライバ１０の
出力は出力端子１１からケーブル４Ａを介して端末機器
２の入力端子２０に接続され、さらに、ｌ’、　Ｘ　−
ＯＲ回路構成のレシーバ２１の一方の入力に接続されて
いる。また、制御機器１の接地側はケーブル４Ｂを介し
てレシーバ２１の他方の入力に接続されると共にプルア
ップ抵抗２２を介して電源２３に接続されている。Control equipment! has a driver IO, and the output of this driver 10 is connected from the output terminal 11 to the input terminal 20 of the terminal device 2 via the cable 4A, and further, l',
It is connected to one input of a receiver 21 having an OR circuit configuration. Further, the ground side of the control device 1 is connected to the other input of the receiver 21 via a cable 4B, and is also connected to a power source 23 via a pull-up resistor 22.

端末機器２は、ケーブル５を介して端末機器３と接続す
るための出力端子２４を有し、機器２の内部でケーブル
４Ａとケーブル５とが接続されている。The terminal device 2 has an output terminal 24 for connecting to the terminal device 3 via the cable 5, and the cable 4A and the cable 5 are connected inside the device 2.

ケーブル５は、端末機器３の入力端子３ｏを介してレシ
ーバ３１の一方の入力に接続され、レシーバ３１の他方
の人力はプルアップ抵抗３２を介して電源３３に接続さ
れている。The cable 5 is connected to one input of the receiver 31 via the input terminal 3 o of the terminal device 3 , and the other input of the receiver 31 is connected to a power source 33 via a pull-up resistor 32 .

次に、動作を説明する。なお、以下の説明では各端末機
器のレシーバ出力が２値レベルで１．レベルのとき当該
端末機器が選択されたものとする。Next, the operation will be explained. In the following explanation, the receiver output of each terminal device is expressed as 1. It is assumed that the terminal device is selected when the terminal device is at the level.

まず、制御機器ｌのドライバ１０に不図示の選択スイッ
チから１４レベルの信号を人力すると、ドライバ１０で
増幅されたのちケーブル４Δを介して端末機器２のレシ
ーバ２１の一方の入力に供給される。レシーバ２１の他
方の入力はケーブル４１３で常に接地されているので常
時［、レベルとなっているにのためレシーバ２１の２人
力は共に１、レベルとなり、したがって出力もＬレベル
となるので端末機器２が選択される。First, when a 14-level signal is input from a selection switch (not shown) to the driver 10 of the control device 1, it is amplified by the driver 10 and then supplied to one input of the receiver 21 of the terminal device 2 via the cable 4Δ. Since the other input of the receiver 21 is always grounded by the cable 413, it is always at [, level. is selected.

これに対して端末機器３は、レシーバ３１の一方の入力
にケーブル４Ａ及び５を介してＬレベルのドライバ出力
が供給され、他方の人力は常に電源３３により常時１ル
ベルが供給されているのでその出力はＨレベルとなり、
選択されない。On the other hand, in the terminal device 3, an L-level driver output is supplied to one input of the receiver 31 via the cables 4A and 5, and the other human power is always supplied with 1 lb by the power supply 33, so that The output becomes H level,
Not selected.

次に、制御機器１のドライバ１０にＩＩレベルの信号を
入力すると、端末機器２のレシーバ２１の入力は一方が
Ｆルベル、他方が１．レベルとなり、その出力がＨレベ
ルとなるので５端末機器２は選択されない。Next, when a II level signal is input to the driver 10 of the control device 1, the input of the receiver 21 of the terminal device 2 is F level on one side and 1 level on the other side. level, and its output becomes H level, so the 5 terminal device 2 is not selected.

これに対して端末機器３は、レシーバ３１の２人力が共
に１ルベルとなるため、その出力カ月、レベルとなり選
択される。On the other hand, the terminal equipment 3 is selected because the power of the two receivers 31 is 1 lvl, so the output level is determined by the month and level.

このように、各端末機器の入力端ｒにケーブルを接続す
るか否かにより各機器固有の識別情報を設定でき、制御
機器からの選択信号で任意の端末機器を選択することが
できる。In this way, identification information unique to each terminal device can be set depending on whether or not a cable is connected to the input terminal r of each terminal device, and any terminal device can be selected using a selection signal from the control device.

なお、端末機器としては光ディスク等の記憶装置、コン
ソール等の入出力装置、プリンタ等の印字装置等を用い
ることができる。また、制御機器をコンピュータ等のホ
ストとして考えれば、多くの機器を同様なデイジ−チェ
ーン方式によって選択・制御することができる。Note that a storage device such as an optical disk, an input/output device such as a console, a printing device such as a printer, etc. can be used as the terminal device. Furthermore, if the control device is considered as a host such as a computer, many devices can be selected and controlled using a similar daisy chain method.

［発明の効果］ 以−Ｌ詳細に説明したように、本発明によれば。[Effect of the invention] According to the present invention, as described in detail below.

制御機器と端末機器とをケーブルで接続することで各端
末機器固有の識別情報を自動的に設定することができ、
スイッチ等の機器番号設定用装置によって各機器内イ１
の番号を設定することなしに選択制御を行うことが可能
となる。By connecting the control device and the terminal device with a cable, identification information unique to each terminal device can be automatically set.
A device number setting device such as a switch is used to set the number in each device.
It becomes possible to perform selection control without setting a number.

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

第１図は、本発明によるデータ伝送装置の一実施例を示
すブロック図である。 ｌ・・・制御機器 ２．３・・・端末機器 ＩＯ・・・ドライバ ２１．３１・・・レシーバ ４Δ、４３．５・・・ケーブルFIG. 1 is a block diagram showing an embodiment of a data transmission device according to the present invention. l...Control equipment 2.3...Terminal equipment IO...Driver 21.31...Receiver 4Δ, 43.5...Cable

Claims (1)

【特許請求の範囲】[Claims] （１）制御機器に複数の端末機器を接続し、前記制御機
器と任意の端末機器との間でデータの送受を行なうデー
タ伝送装置において、 前記任意の端末機器の選択は、前記制御機器と前記端末
機器とをケーブルで接続することで設定される前記各端
末機器固有の識別情報によりなされることを特徴とする
データ伝送装置。(1) In a data transmission device in which a plurality of terminal devices are connected to a control device and data is sent and received between the control device and any terminal device, selection of the arbitrary terminal device is performed by connecting the control device and the A data transmission device characterized in that the data transmission is performed using identification information unique to each terminal device, which is set by connecting the terminal devices with a cable.
JP63003210A 1988-01-12 1988-01-12 Data transmission unit Pending JPH01180662A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP63003210A JPH01180662A (en) 1988-01-12 1988-01-12 Data transmission unit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP63003210A JPH01180662A (en) 1988-01-12 1988-01-12 Data transmission unit

Publications (1)

Publication Number Publication Date
JPH01180662A true JPH01180662A (en) 1989-07-18

Family

ID=11551082

Family Applications (1)

Application Number Title Priority Date Filing Date
JP63003210A Pending JPH01180662A (en) 1988-01-12 1988-01-12 Data transmission unit

Country Status (1)

Country Link
JP (1) JPH01180662A (en)

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