JPS5994149A - Common device switching system of dual computer system - Google Patents

Common device switching system of dual computer system

Info

Publication number
JPS5994149A
JPS5994149A JP57203103A JP20310382A JPS5994149A JP S5994149 A JPS5994149 A JP S5994149A JP 57203103 A JP57203103 A JP 57203103A JP 20310382 A JP20310382 A JP 20310382A JP S5994149 A JPS5994149 A JP S5994149A
Authority
JP
Japan
Prior art keywords
data
computers
computer
common device
soft switch
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
JP57203103A
Other languages
Japanese (ja)
Inventor
Seiji Tabayashi
精二 田林
Tetsuya Abe
哲也 阿部
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.)
Meidensha Corp
Meidensha Electric Manufacturing Co Ltd
Original Assignee
Meidensha Corp
Meidensha Electric Manufacturing Co 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 Meidensha Corp, Meidensha Electric Manufacturing Co Ltd filed Critical Meidensha Corp
Priority to JP57203103A priority Critical patent/JPS5994149A/en
Publication of JPS5994149A publication Critical patent/JPS5994149A/en
Pending legal-status Critical Current

Links

Classifications

    • GPHYSICS
    • G06COMPUTING; CALCULATING OR COUNTING
    • G06FELECTRIC DIGITAL DATA PROCESSING
    • G06F11/00Error detection; Error correction; Monitoring
    • G06F11/07Responding to the occurrence of a fault, e.g. fault tolerance
    • G06F11/16Error detection or correction of the data by redundancy in hardware
    • G06F11/20Error detection or correction of the data by redundancy in hardware using active fault-masking, e.g. by switching out faulty elements or by switching in spare elements

Abstract

PURPOSE:To make the initialization of hardware unnecessary to secure the continuity of processings, by switching devices with software. CONSTITUTION:Data is exchanged between computers of a system 1 and a system 2 and devices 3-5 through an I/O port 8, and device designating data Dc out of this data is given to a soft switch control part 9 and is stored as table data in a soft switch table 10 by the control part 9. Input/output data D is handled as exchange data between computers of systems 1 and 2 and devices 3-5, and the table 10 is referred to discriminate whether data D1 outputted to, for example, the printer 5 out of this data comes from the connected system or the unconnected system, and only print data of the connected system is given as output data to the printer 5. By this constitution, it is sufficient for switching of the system if data indicating the connected system out of the device designating code is changed, and the initialization of hardware is unnecessary.

Description

【発明の詳細な説明】 本発明は二重系コンピュータシステムにおける共通デバ
イスの切換方式に関する。
DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a common device switching method in a dual system computer system.

第1図は二重系コンピュータシステムの全体構成図ヲ示
す。1系のコンピュータ1と2系のコンピュータ2は配
電盤などの現場機器側に設置されて同じ仕事ヲする。こ
れらコ/ピユータ1,2の共通デバイスとしての操作卓
3 HOR”!+ + 4* sプリンタ5は管理室側
に設置される。コンピュータ1.2と共通デバイス間は
比較的長い距離(例えば2 Km )になるため、その
間のデータ授受には各デバイス専用の伝送線でなく共通
の伝送線6t、6*を使用し、この伝送線6+ 、6を
全通し7たデータは予メ与工られるデバイスアドレスに
よって共通デバイスコントロール部7が切換えるデバイ
スとの間で授受される。
FIG. 1 shows an overall configuration diagram of a dual system computer system. The computer 1 of the 1st system and the computer 2 of the 2nd system are installed on the field equipment side such as a switchboard and perform the same work. The operator console 3 HOR"!++4*s printer 5, which serves as a common device for these computers 1 and 2, is installed in the control room. There is a relatively long distance between the computer 1.2 and the common device (for example, 2 Km), a common transmission line 6t, 6* is used instead of a dedicated transmission line for each device for data exchange during that time, and the data transmitted through the transmission line 6+, 6 is provided in advance. Data is exchanged between devices to be switched by the common device control unit 7 based on the device address.

こうしたシステムにおいて、共通デバイスの切換えは、
コントロール部7における共通バスのスイッチをコンピ
ュータ1,2又は操作卓3から与えられるデバイスアド
レスデータを復号して切換えるというハード的切換えに
されている。この従来方式では、切換え時にコントロー
ル部7自体のハードウェアのイニシャライズを行なう必
要があるため、処理の連続性を保つのが困難であった。
In such systems, switching common devices is
The common bus switch in the control section 7 is switched by hardware by decoding device address data given from the computers 1, 2 or the console 3. In this conventional method, it is necessary to initialize the hardware of the control unit 7 itself at the time of switching, so it is difficult to maintain continuity of processing.

捷た、共通デバイスとコンピュータ間の距離が長いため
、ハードウェア的切換えは切換え手段が高価になるし、
デバイスの増設にはそれを見越した予備回路を用意して
おかない限り大幅な改造を必要とする。
Because of the long distance between common devices and computers, hardware switching requires expensive switching methods;
Adding more devices requires major modifications unless backup circuits are prepared in anticipation of this.

本発明は上述の事情に鑑みてなされたもので、デバイス
の切換えをソフトウェア的に行なうことにより、従来の
問題点全解消した共通デバイスの切換方式全提供するこ
とを目的とする。
The present invention has been made in view of the above-mentioned circumstances, and it is an object of the present invention to provide an entire common device switching method that eliminates all of the conventional problems by performing device switching using software.

第2図は本発明の一実施例を示す共通デバイスコントロ
ール部の展開図である。入出力ポート8は1系と2系の
夫々のコンピュータ1,2と各デバイスとのデータ交換
をし、この交換データのうちデバイス指定データDaは
ソフトスイッチコントロール部9に与えられ、デバイス
入出力データDはデバイスa+、 41.4t 、 5
側との間の交換データとして取扱われる。ソフトスイッ
チコントロール部9に与えられるデータDaはコンピュ
ータ1,2又は操作卓3から与えられデバイスを識別す
る番号とコンピュータ1,2との接続、非接続を決める
2進数とを含む。この2進数は例えば以下の表に示すよ
うに2ビツトが割当てられて4種類の組合せを指定する
FIG. 2 is a developed view of a common device control section showing an embodiment of the present invention. The input/output port 8 exchanges data between the computers 1 and 2 of the 1st and 2nd systems and each device, and among this exchanged data, the device designation data Da is given to the soft switch control section 9, and the device input/output data D is device a+, 41.4t, 5
It is treated as data exchanged between the parties. The data Da given to the soft switch control section 9 includes a number given from the computers 1, 2 or the operator console 3 to identify the device, and a binary number determining connection or disconnection with the computers 1, 2. For example, 2 bits are assigned to this binary number to specify four types of combinations as shown in the table below.

このデータDaはコントロール部9によってソフトスイ
ッチテーブル10にそのテーブルデータとして格納され
る。
This data Da is stored by the control section 9 in the soft switch table 10 as its table data.

入出力データDはコンピュータ1,2とデバイス間の交
換データとして取扱われ、そのうちプリンタ5に打出す
データD、はプリンタコントロール部11.において該
データD、が接続系からのものか非接続系からのものか
全ソフトスイッチテーブル10を参照して識別し、接続
系のプリントデータのみプリンタ5に打出しデータとし
て与える。非接続系のプリントデータは無視される。
The input/output data D is handled as exchange data between the computers 1 and 2 and the devices, and the data D output to the printer 5 is sent to the printer control section 11. At this point, it is determined whether the data D is from the connected system or from the non-connected system by referring to the total soft switch table 10, and only the print data of the connected system is provided to the printer 5 as print data. Print data from unconnected systems is ignored.

データDのうち、操作卓3への表示入力又は操作出力に
なるデータD4は、それが表示入力であればプリンタ入
力と同様にコントロール部114がテーブル10を参照
して接続糸のもののみを操作卓3に覗込1れ、操作出力
であればコントロール部114はテーブル10ヲ参照し
て接続されている系に対してのみ送出する。
Of the data D, if the data D4 is a display input or an operation output to the operation console 3, the control unit 114 refers to the table 10 and operates only the connecting threads in the same way as printer input if it is a display input. When looking into the console 3, if it is an operation output, the control unit 114 refers to the table 10 and sends it only to the connected system.

データDのうち、0RT4..41への表示データD2
+D、は、プリンタ打出しデータD1と同様にコントロ
ール部1.]、t 、 IIsがテーブルを参照して接
続糸のデータのみORT L 、 4tに表示データと
して与える。
Among data D, 0RT4. .. Display data D2 to 41
+D is the control unit 1. in the same way as the printer ejection data D1. ], t, IIs refers to the table and provides only the connecting thread data to ORTL, 4t as display data.

なお、これらコントロール部111〜114及び9は、
具体的には共通デバイスコントロール部7の構成要素と
なるマイクロコンピュータのソフトウェアとしてその機
能がプログラムされ、ソフトスイッチテーブル10けマ
イクロコンピュータのRAMの一部が当てられる。
Note that these control units 111 to 114 and 9 are
Specifically, its functions are programmed as software in a microcomputer that is a component of the common device control unit 7, and a part of the RAM of the microcomputer is allocated to the soft switch table 10.

こうした構成の共通デバイスコントロール部によれば、
系列の切換えにはデバイス指定コードのうちの接続系列
を示すデータの変更で済み、従来のようなハードウェア
のイニシャライズを不要にして処理の連続性を確保でき
る。また、デバイスの増設にはソフトスイッチテーブル
の登録のみで増設デバイスへの切換えが可能となり、少
ない情報量のテーブル確保でデバイスの46に拘らずそ
の増設は極めて容易になる。また、系列の接続には前記
表のように全ての接続形態を持つことができ、デバイス
便用上に柔軟性ケ持たせることができる。また、コンピ
ュータ1,2はそのソフトウェア構成にデバイスの切換
えを考慮する必要がない。
According to the common device control section with this configuration,
To switch the series, it is enough to change the data indicating the connection series in the device specification code, and it is possible to ensure continuity of processing without the need for initializing the hardware as in the past. Further, when adding a device, it is possible to switch to an additional device simply by registering the soft switch table, and by securing a table with a small amount of information, it is extremely easy to add a device regardless of the number of 46 devices. In addition, the series connections can have all the connection types as shown in the table above, and can provide flexibility in terms of device convenience. Further, the computers 1 and 2 do not need to consider device switching in their software configurations.

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

第1図は二重系コンピュータシステムg 成因、第2図
は本発明方式におけるコントロール部7の展開図である
。 1.2・・・コンピュータ、3・・・操作卓、4+、4
t・・・CRT%  5・・・プリンタ、6+ 、6t
・・・伝送路、7・・・共通デバイスコントロール部、
8・・・入出力ボート、9・・・ソフトスイッチコント
ロール部、IO・・・ソフトスイッチテーブル、11+
、 lb 、 IIs、 L・・・コントロール部。
FIG. 1 shows the origins of a dual-system computer system g, and FIG. 2 is a developed view of the control section 7 in the system of the present invention. 1.2...computer, 3...operation console, 4+, 4
t...CRT% 5...Printer, 6+, 6t
...Transmission line, 7...Common device control section,
8...Input/output board, 9...Soft switch control section, IO...Soft switch table, 11+
, lb, IIs, L...control section.

Claims (1)

【特許請求の範囲】 0)1系と2系の夫々のコンピュータト、該コンピュー
タの共通のデバイスとの間のデータ授受に該デバイスを
切換える共通デバイスコントロール部トを備え、上記コ
ントロール部はコンピュータと各デバイスとの間のデー
タ授受を入出力ホートラ介して行ない、データ授受デバ
イスの設定及び接続する系列のコンピュータとの授受デ
ータの選択會予め与えられるソフトスイッチテーブルの
データからソフトウェア上で制御することを特徴とする
二重系コンピュータシステムの共通デバイス切換方式。 (2)上記コントロール部による接続するコンピュータ
とのデータ授受は、1系と2系の各コンピュータとの個
別接続2両コンピュータとの接続及び両コンピュータと
の非接続の4種類にしたことを特徴とする特許請求の範
囲第1項記載の二重系コンピュータシステムの共通デバ
イス切換方式。
[Scope of Claims] 0) Each computer of the first system and the second system is provided with a common device control unit that switches the device for data exchange between the computers and the common device, and the control unit is connected to the computer. Data is exchanged with each device via the input/output router, and the settings of the data exchange device and the selection of data exchanged with the connected computer are controlled on software from the data in the soft switch table given in advance. Features a common device switching method for dual-system computer systems. (2) The control section is characterized by four types of data transmission and reception with connected computers: individual connection with each computer of the 1st and 2nd systems, connection with both computers, and non-connection with both computers. A common device switching method for a dual system computer system according to claim 1.
JP57203103A 1982-11-19 1982-11-19 Common device switching system of dual computer system Pending JPS5994149A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP57203103A JPS5994149A (en) 1982-11-19 1982-11-19 Common device switching system of dual computer system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP57203103A JPS5994149A (en) 1982-11-19 1982-11-19 Common device switching system of dual computer system

Publications (1)

Publication Number Publication Date
JPS5994149A true JPS5994149A (en) 1984-05-30

Family

ID=16468433

Family Applications (1)

Application Number Title Priority Date Filing Date
JP57203103A Pending JPS5994149A (en) 1982-11-19 1982-11-19 Common device switching system of dual computer system

Country Status (1)

Country Link
JP (1) JPS5994149A (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4843848A (en) * 1971-10-06 1973-06-25
JPS49130650A (en) * 1973-04-16 1974-12-14

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4843848A (en) * 1971-10-06 1973-06-25
JPS49130650A (en) * 1973-04-16 1974-12-14

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