JPS58225738A - Dispersion type transmission system - Google Patents
Dispersion type transmission systemInfo
- Publication number
- JPS58225738A JPS58225738A JP57108384A JP10838482A JPS58225738A JP S58225738 A JPS58225738 A JP S58225738A JP 57108384 A JP57108384 A JP 57108384A JP 10838482 A JP10838482 A JP 10838482A JP S58225738 A JPS58225738 A JP S58225738A
- Authority
- JP
- Japan
- Prior art keywords
- terminal processing
- transmission
- distributed
- restart
- terminal processor
- 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
Links
Classifications
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F13/00—Interconnection of, or transfer of information or other signals between, memories, input/output devices or central processing units
- G06F13/10—Program control for peripheral devices
- G06F13/12—Program control for peripheral devices using hardware independent of the central processor, e.g. channel or peripheral processor
- G06F13/124—Program control for peripheral devices using hardware independent of the central processor, e.g. channel or peripheral processor where hardware is a sequential transfer control unit, e.g. microprocessor, peripheral processor or state-machine
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- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Computer Hardware Design (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Physics & Mathematics (AREA)
- General Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Small-Scale Networks (AREA)
- Maintenance And Management Of Digital Transmission (AREA)
- Monitoring And Testing Of Transmission In General (AREA)
- Data Exchanges In Wide-Area Networks (AREA)
Abstract
Description
【発明の詳細な説明】
本発明は、端末処理装置が複数の異なった場所ニ分散配
Ｉｔ ２れているデータ伝送システムに関スる。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a data transmission system in which terminal processing equipment is distributed over a plurality of different locations.
各種の交通機関における運行管理システムや、プラント
制御システム、計測制御システム７：ｔどのデータ伝送
システムでは、中央管理装置に対して複数の端末処理装
置がそれぞれ異なった場合に分散配＃ざｎたシステムと
なってしまう場合が多い。In data transmission systems such as operation management systems for various transportation systems, plant control systems, and measurement control systems, a distributed distribution system is used when multiple terminal processing devices are different from each other with respect to a central control device. In many cases, it becomes .
第１図にこのような複数の端末処理装置が分散配置され
たシステムにおけるデータ伝送システム、いわゆる分散
伝送システムの一例を示す。FIG. 1 shows an example of a data transmission system in a system in which a plurality of such terminal processing devices are distributed, a so-called distributed transmission system.
この第１図しこおいて、１は中央管理装置、２はインタ
ーフェース、３−ｏ〜３−３は伝送制御装置。In FIG. 1, 1 is a central management device, 2 is an interface, and 3-o to 3-3 are transmission control devices.
”ｌ−ｔ〜４−３は端末処理装置、５はループ状の伝送
路、６はディスプレイ、７はプリンタである。``lt~4-3 are terminal processing devices, 5 is a loop-shaped transmission path, 6 is a display, and 7 is a printer.
中央管埋装ｊｆ １と、そｎぞれの制御対象Ａ−Ｃに対
応して分散配置されている端末処理装置４゜〜４−ｓ
（Ｌ ＣＵ Ｉ ＩＬ ＣＵ ３ ＋ Ｌ ＣＵ
３ ）は、それらに対応して設けられている伝送制御
装ｆｉ’ ３−ｏ 〜３−ｓ （Ｎ ＣＰ Ｏ、Ｎ
ＣＰ １ ｒ Ｎ ＣＰ−２、ＮＣＰ−３）′ｆｉ：
介してループ状の伝送路５に結合ざｎ１中央管理装置１
と分散配置された各端末処理装置４−１〜４−３との間
、それにこｎら端末処理装置４−１〜４−３相互間での
データ伝送の全てがループ状伝送路５によって行なえる
ようになつ−Ｃいる。Central pipe embedded jf 1 and terminal processing devices 4° to 4-s distributed in correspondence to each of the controlled objects A to C.
(L CU I IL CU 3 + L CU
3) are transmission control devices fi' 3-o to 3-s (N CP O, N CP O, N
CP 1 r N CP-2, NCP-3)'fi:
Connected to the loop-shaped transmission path 5 via the central management device 1
All data transmission between the distributed terminal processing devices 4-1 to 4-3 and between these terminal processing devices 4-1 to 4-3 is performed through the loop-shaped transmission line 5. I'm starting to feel like-C.
ところで、このような伝送システムにおいては、端末処
理装置誰にもコンピュータを用いてローカル的な制御を
行なうようにしたものが多く用いられるようになってお
り、そのため、端末処理装置がシステム稼動中にエラー
検出機能や保護機能の作動など、一時的な原因によりハ
ード的にシステムダウンしたり、制御対象からの入力条
件が特定のタイミングで制御不能な状態になってソフト
的にシステムダウンしたりすることがある。By the way, in many such transmission systems, terminal processing devices are often controlled locally using computers, and therefore, when the terminal processing device is in operation, A hardware system down due to a temporary cause such as activation of an error detection function or protection function, or a software system down due to input conditions from a controlled object becoming uncontrollable at a specific timing. There is.
しかして、このようなシステムダウンを生じンこ場合で
も、端末処理装置を一旦、リセットし、丙スタート処理
してシステム立上げを行なえばそのままひさ続いてデー
タ伝送動作の継続が可能な場合が多い。特に、このよう
なシステム（こおいては、現在までにハード面、ソフト
面での開発か進み、システム的にも、充分に枯れたもの
となって来ているため、システムダウンの原因もほとん
どが一過性のもので占められるようになってきている現
状では、なおざらである。However, even if such a system failure occurs, it is often possible to continue data transmission operations by resetting the terminal processing device and performing the C start processing to start up the system. . In particular, this type of system (in this case, the development of both hardware and software has progressed to date, and the system itself has become sufficiently worn out, so the cause of system downtime is almost non-existent.) This is even more so in the current situation where the world is increasingly dominated by temporary things.
従って、従来から、端末処理装置が集中して設けである
伝送システムなどにおいては、システムダウンしたとき
にオペレータか手動で操作し、システム立上げを行なう
ことにより短い処理時間で容易に復帰でき、システム稼
動率の低下をほとんど生じないで対応することができる
が、上記σ）ような端末処理装置が分散配置されている
分散伝送システムにおいては、それぞれシステムダウン
を生じた端末処理装置が設慣しである場所にオにレータ
がおもむいてのシステム立上げ処理を要するため、シス
テムダウン回後までの時間が長くなり、従って、従来の
分散形伝送システムにおいては、システムダウンによる
稼動率の低下が著しいという欠点があった。Therefore, conventionally, in transmission systems where terminal processing equipment is installed centrally, when the system goes down, it is possible to easily recover the system in a short processing time by manually operating the system and restarting the system. This can be handled with almost no reduction in the operating rate, but in a distributed transmission system where terminal processing equipment is distributed in a distributed manner as described in σ) above, the terminal processing equipment that caused the system failure may be Since the system startup process requires a system to be started up by a remote controller at a certain location, it takes a long time until the system goes down.Therefore, in conventional distributed transmission systems, the reduction in operating efficiency due to system down is significant. There were drawbacks.
本発明の目的６１、上記した従来技術の欠点を除き、端
末処理装置にシステムダウンを生じても伝送システムの
稼動率がほとんど低下しないようにすることのでさる分
散形伝送システムを提供するにある。Object 61 of the present invention is to provide a distributed transmission system which eliminates the drawbacks of the prior art described above and allows the operating rate of the transmission system to hardly decrease even if a system failure occurs in a terminal processing device.
この目的を達成するため、本発明は、分散配置されてい
る端末処理装置１に異常検出手段とリセット再スタート
処理手段とを設け、端末処理装置がシステムダウンした
とさには自動的Ｏこリセットが掛けられ再スタート処理
されるようにした点を特徴とする。In order to achieve this object, the present invention provides an abnormality detection means and a reset restart processing means in the distributed terminal processing devices 1, and automatically resets the terminal processing devices when the system goes down. is multiplied and restart processing is performed.
以下、本発明による分散形伝送システムの実施例を図面
について説明する。Embodiments of the distributed transmission system according to the present invention will be described below with reference to the drawings.
第２図は本発明の一実施例で、第１図における伝送制御
装ｆｉｔ／、３−＋〜３−３と端末処理装置４−１〜４
−３をそれぞれ３と４で示したものであり、その他は第
１図の従来例と同じである。FIG. 2 shows an embodiment of the present invention, in which the transmission control devices fit/, 3-+ to 3-3 and terminal processing devices 4-1 to 4 in FIG.
-3 are indicated by 3 and 4, respectively, and the rest is the same as the conventional example shown in FIG.
この第２図、において、３０は送受信制御部、３１は伝
送処理部、３２はホストインターフェース回路、３３は
故障検出回路、３４は自動再起動信月回路、４０は伝送
制御インターフェース部、４１は処理部、４２は入出力
処理部、４３は再スタートイニシャル処理回路である。In FIG. 2, 30 is a transmission/reception control unit, 31 is a transmission processing unit, 32 is a host interface circuit, 33 is a failure detection circuit, 34 is an automatic restart circuit, 40 is a transmission control interface unit, and 41 is a processing unit. 42 is an input/output processing section, and 43 is a restart initial processing circuit.
次に動作について説明する。Next, the operation will be explained.
伝送制御装置３と伝送路５との間でのデータの送受信は
送受信制御部３０′ｆ：介して行なわれ、ホストとなる
分散配置された端末処理装置４との間はホストインター
フェース回路７を介して接続ざｎｌこれらの送受信の管
理およびデータ伝送制御は伝送処理部３１によって行な
われる。Data is transmitted and received between the transmission control device 3 and the transmission line 5 via the transmission/reception control section 30'f, and data is transmitted and received between the transmission control device 3 and the transmission line 5 via the host interface circuit 7. Management of these transmissions and receptions and data transmission control are performed by the transmission processing section 31.
また、分散配置された端末処理装置４は伝送制御インタ
ーフェース部４０を介して伝送制御装置３に接続され、
これらの間でデータの送受信を行なうことにより中央管
埋装ｆｆ１ｌ（第１図）との間での情報交換を行なうと
共に、入力出処理部４２を介して制御対象と接続され、
処理対象で発生している現象の増込みと、それに対する
制御出方の送出とを行なうようになっている。なお、以
−ヒの動作は第１図で曲、明した分散形伝送システムと
同じである。Further, the distributed terminal processing devices 4 are connected to the transmission control device 3 via the transmission control interface section 40,
By transmitting and receiving data between these, information is exchanged with the central pipe embedded ff1l (Fig. 1), and it is connected to the controlled object via the input/output processing section 42.
It is designed to increase the number of phenomena occurring in the processing target and to send out control methods for the phenomena. Note that the operation below is the same as that of the distributed transmission system described in FIG.
故障検出回路３３は伝送処理部３１に結合され、伝送制
御装Ｍ３と端末制御装置４との間でのデータ伝送状態を
監視し、このデータ伝送状態に異常が発生したときには
端末処理装置４Ｇこシステムダウンか発生しｒものと判
断して自動再起動信号回路３４を動作させ、再スタート
イニシャル処理回路４３に対して起動信号を供給する。The failure detection circuit 33 is coupled to the transmission processing unit 31, monitors the data transmission state between the transmission control device M3 and the terminal control device 4, and when an abnormality occurs in the data transmission state, the terminal processing device 4G system It is determined that a down event has occurred, the automatic restart signal circuit 34 is operated, and a startup signal is supplied to the restart initial processing circuit 43.
再スタートイニシャル処理回路４３は自動再起動信号回
路３４から起動信号が入力されると動作を開始し、端末
処理装置４の処理部４１をゼネラルリセットし、初期状
態から立上げる処理を行なうＯ
そこで、いま、端末処理装置４にハード的、或いはソフ
ト的なシステムダウンが発生したとする〇そうすると、
これに伴って伝送制御装置３と端末処理装置４との間で
のデータ伝送に異常が現ねれるから、故障検出回路３３
により自動再起動信号回路３４を介して再スタートイニ
シャル処理回路４３が起動され、システムダウンした端
末処理装置４に対するリセット再スタート処理が行ンよ
りれることＧこなり、システムダウンの旋回が一過性σ
）ものである限り端末処理装置４は直ちに処理動作可能
な状態に復帰し、データ伝送動作は短時間中断するだけ
となるので稼動率の低下を少くすることができる。The restart initial processing circuit 43 starts operating when a startup signal is input from the automatic restart signal circuit 34, performs a general reset on the processing section 41 of the terminal processing device 4, and performs processing to start up from the initial state. Suppose that a hardware or software system failure occurs in the terminal processing device 4. Then,
Along with this, an abnormality appears in the data transmission between the transmission control device 3 and the terminal processing device 4, so the failure detection circuit 33
As a result, the restart initial processing circuit 43 is activated via the automatic restart signal circuit 34, and a reset restart process is performed for the terminal processing device 4 whose system has gone down. σ
), the terminal processing device 4 immediately returns to a state capable of processing, and the data transmission operation is only interrupted for a short period of time, so that a decrease in the operating rate can be minimized.
なお、このとき、希にではあるが、発生した異常が一過
性のものではなくて永続性のものであったとすｔＬは、
再スタートイニシャル処理回路４３が起動して端末処理
装置４の動作立上げが行なわれても直ちにシステムダウ
ンとなってしまうが、このときには伝送制御装置３から
中央管埋装Ｗ１に復帰不能信号か送られ、所定の処理に
入ること １になる。At this time, although it is rare, if the abnormality that occurred was not temporary but permanent, tL is
Even if the restart initial processing circuit 43 is activated and the terminal processing device 4 is started up, the system will immediately go down, but at this time, a non-recoverable signal is sent from the transmission control device 3 to the central pipe W1. 1, and the specified process begins.
次に、故障検出回路３３＆こよる異常検出動作について
説明する。Next, the abnormality detection operation performed by the failure detection circuit 33 will be explained.
既に説明したように、故障検出回路３３は伝送制御装置
３と端末処理装Ｍ４との間のデータ伝送状態を監視して
端末処理装置４の異常、つまりシステムダウンを検出す
るようになっている。ソコで、この異常検出のためには
、伝送制御装置３から端末処理装置４にデータが送出さ
れたとき、端末処理装置４からのアンサ−を調べ、そち
が返ってこなかったときには異常が発生したものとすれ
ばよい。As already explained, the failure detection circuit 33 monitors the data transmission state between the transmission control device 3 and the terminal processing device M4 to detect an abnormality in the terminal processing device 4, that is, a system down. In order to detect this abnormality, when data is sent from the transmission control device 3 to the terminal processing device 4, the answer from the terminal processing device 4 is checked, and if no response is returned, an abnormality has occurred. Just take it as a thing.
しかして、この方法では、伝送制御装置３と端末処理装
置４との間でデータの交換が行なわれるまでは異常検出
を行なうことができないから、こ（１）点をＥｌｍする
ためには次の方法を用いるようにしてもよい。即ち、伝
送制御装置３と端末処理装置４との間でのデータ伝送が
途切口、それが予め定めらγ１、た一定の時間以上にわ
たって続いたときしこは伝送処理部３１を介して伝送制
御装＃３から端末処理装置４に故障診断用のデータ送出
を行なわゼ、そｎに対するアンサ−の有無により端末処
理装置４の異常判定を行なうのである。従って、この方
法を用いた故障検出回路３３の動作をフローチャートで
示すと第３図のようになる。However, with this method, it is not possible to detect an abnormality until data is exchanged between the transmission control device 3 and the terminal processing device 4, so in order to solve this point (1), follow the steps below. A method may also be used. That is, when the data transmission between the transmission control device 3 and the terminal processing device 4 reaches a break point and continues for a predetermined period of time γ1 or more, the transmission control is performed via the transmission processing unit 31. The device #3 sends data for failure diagnosis to the terminal processing device 4, and an abnormality in the terminal processing device 4 is determined based on the presence or absence of an answer. Therefore, the operation of the failure detection circuit 33 using this method is shown in a flowchart as shown in FIG.
なお、本発明の実施例としては、これら２つの方法を併
用して異常を検出１−るようにした故障検出回路３３を
用いるようにしてもよく、或いはこれらの方法のいずｎ
か一方だけを用いたものとしてもいずれでもよい。In addition, as an embodiment of the present invention, a failure detection circuit 33 that uses these two methods in combination to detect an abnormality may be used, or any of these methods may be used.
Either may be used, or only one of them may be used.
以上説明したように、本発明によｎば、分散形伝送シス
テムにおいて分散配置されている端末処理装置がシステ
ムダウンしても、はとんどの場合、直ちに再起動して処
理の実行に自動的に戻るようにすることができるから、
従来技術の欠点を除き、システムダウンによる稼動率の
低下が極めて少ない分散形伝送システムを容易に提供す
ることができる。As explained above, according to the present invention, even if the terminal processing devices distributed in a distributed transmission system go down, in most cases, they will immediately restart and automatically start processing. Because you can make it go back to
By eliminating the drawbacks of the prior art, it is possible to easily provide a distributed transmission system in which the reduction in operating rate due to system failure is extremely small.
第１図は分散形伝送システムの一例を示すブロック図、
舘２図は本発明における伝送制御装置と端末処理装置の
一実施例を示すブロック図、第３図は故障検出回路の一
実施例の動作を説明するためのフローチャートである。
３・・・伝送制御装置、４・・・端末処理装置、５・・
・伝送路、３０・・・送受信制御部、３１・・・伝送処
理部、３２・・・ホストインターフェース回路、３３・
・・故障検出回路、３４・・・自動再起動信号回路、４
０・・・伝送制御インターフェース部、４１・・・処理
部、４２・・・入出力処理部、４３・・・再スタートイ
ニシャル処理回路。
第１図
第２図
第３図
７円期起動FIG. 1 is a block diagram showing an example of a distributed transmission system.
FIG. 2 is a block diagram showing one embodiment of the transmission control device and terminal processing device according to the present invention, and FIG. 3 is a flowchart for explaining the operation of one embodiment of the failure detection circuit. 3... Transmission control device, 4... Terminal processing device, 5...
- Transmission path, 30... Transmission/reception control section, 31... Transmission processing section, 32... Host interface circuit, 33.
...Failure detection circuit, 34...Automatic restart signal circuit, 4
0... Transmission control interface section, 41... Processing section, 42... Input/output processing section, 43... Restart initial processing circuit. Figure 1 Figure 2 Figure 3 Start of 7-yen period
Claims (1)
置との間でのデータ伝送を、これら分散配置ざ口た端末
処理装置のそれぞれに対応して設けた複数の伝送制御装
置を介して行なう方式の分散形伝送制御システムにおい
て、端末処理装置の動作を監視して異常検知を行なう異
常検知手段と、端末処理装置に対するリセット再スター
ト処理【行なう再スタート手段とを端末処理装置に対応
して設け、端末処理装置に対する自動再スタート処理を
可能に構成したことを％徴とする分散形伝送システム。 ２、特許請求の範囲第１項において、上記異常検知手段
が、上記端末処理装置と上記伝送制御装置との間でのデ
ータ伝送状態を監視し、端末処理装置の応答動作の有無
により異常検出を行なう手段および上記端末処理装置と
上記伝送制御装置との間でのデータ伝送状態を監視し、
それらの間でのｒ−夕伝送が助定時間以上途切れたとき
には故障診断用データを上記端末処理装置に送出してそ
れに対する応答動作の有無により異常検出を行なう手段
の少くとも一方で構成されたことを特徴とする分散形伝
送システム。[Scope of Claims] 1. Data transmission between a central management device and a plurality of distributed terminal processing devices is performed using a plurality of transmission devices provided corresponding to each of these distributed terminal processing devices. In a distributed transmission control system using a control device, an abnormality detection means for monitoring the operation of a terminal processing device and detecting an abnormality, and a restart means for performing a reset/restart process for the terminal processing device are included in the terminal processing. A distributed transmission system that is configured to correspond to the equipment and is configured to enable automatic restart processing for the terminal processing equipment. 2. In claim 1, the abnormality detection means monitors a data transmission state between the terminal processing device and the transmission control device, and detects the abnormality based on the presence or absence of a response operation of the terminal processing device. monitoring the means for carrying out the process and the data transmission state between the terminal processing device and the transmission control device,
At least one of the means is configured to send failure diagnosis data to the terminal processing device when the r-to-day transmission between them is interrupted for a predetermined time or more, and to detect an abnormality based on the presence or absence of a response operation thereto. A distributed transmission system characterized by:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57108384A JPS58225738A (en) | 1982-06-25 | 1982-06-25 | Dispersion type transmission system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57108384A JPS58225738A (en) | 1982-06-25 | 1982-06-25 | Dispersion type transmission system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS58225738A true JPS58225738A (en) | 1983-12-27 |
| JPH045301B2 JPH045301B2 (en) | 1992-01-31 |
Family
ID=14483398
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP57108384A Granted JPS58225738A (en) | 1982-06-25 | 1982-06-25 | Dispersion type transmission system |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58225738A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6327140A (en) * | 1986-07-21 | 1988-02-04 | Sony Corp | Checking device for equipment mounted with microcomputer |
| JPH02226836A (en) * | 1989-02-28 | 1990-09-10 | Oki Electric Ind Co Ltd | Remote power source controller |
| JPH0537527A (en) * | 1991-07-29 | 1993-02-12 | Osaka Gas Co Ltd | Data transmitter using digital radio network |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS50141902A (en) * | 1974-04-30 | 1975-11-15 | ||
| JPS54105903A (en) * | 1978-02-07 | 1979-08-20 | Sumitomo Electric Ind Ltd | Self-monitor system for program control type communication terminal |
| JPS5635063A (en) * | 1979-08-31 | 1981-04-07 | Toshiba Corp | Speed detection method |
| JPS56129941A (en) * | 1980-03-14 | 1981-10-12 | Omron Tateisi Electronics Co | Failure monitor system |
| JPS5728451A (en) * | 1980-07-28 | 1982-02-16 | Hitachi Ltd | Diagnostic system for relay controller |
-
1982
- 1982-06-25 JP JP57108384A patent/JPS58225738A/en active Granted
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS50141902A (en) * | 1974-04-30 | 1975-11-15 | ||
| JPS54105903A (en) * | 1978-02-07 | 1979-08-20 | Sumitomo Electric Ind Ltd | Self-monitor system for program control type communication terminal |
| JPS5635063A (en) * | 1979-08-31 | 1981-04-07 | Toshiba Corp | Speed detection method |
| JPS56129941A (en) * | 1980-03-14 | 1981-10-12 | Omron Tateisi Electronics Co | Failure monitor system |
| JPS5728451A (en) * | 1980-07-28 | 1982-02-16 | Hitachi Ltd | Diagnostic system for relay controller |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6327140A (en) * | 1986-07-21 | 1988-02-04 | Sony Corp | Checking device for equipment mounted with microcomputer |
| JPH02226836A (en) * | 1989-02-28 | 1990-09-10 | Oki Electric Ind Co Ltd | Remote power source controller |
| JPH0537527A (en) * | 1991-07-29 | 1993-02-12 | Osaka Gas Co Ltd | Data transmitter using digital radio network |
| JP2732962B2 (en) * | 1991-07-29 | 1998-03-30 | 大阪瓦斯株式会社 | Data transmission device using digital wireless network |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH045301B2 (en) | 1992-01-31 |
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