JPS6225534A - Self-test method for link unit - Google Patents

Self-test method for link unit

Info

Publication number
JPS6225534A
JPS6225534A JP60163919A JP16391985A JPS6225534A JP S6225534 A JPS6225534 A JP S6225534A JP 60163919 A JP60163919 A JP 60163919A JP 16391985 A JP16391985 A JP 16391985A JP S6225534 A JPS6225534 A JP S6225534A
Authority
JP
Japan
Prior art keywords
test
link unit
self
data
transmitting means
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
JP60163919A
Other languages
Japanese (ja)
Inventor
Takehiko Hayashi
林 毅彦
Yasuo Kawaguchi
川口 康夫
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.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Corp
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 Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP60163919A priority Critical patent/JPS6225534A/en
Publication of JPS6225534A publication Critical patent/JPS6225534A/en
Pending legal-status Critical Current

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Abstract

PURPOSE:To conduct simply and quickly the self-test of a link unit by connecting a transmitting means and a receiving means and sending a test data from the transmitting means. CONSTITUTION:The transmitting means D and the receiving means R constituting each set are connected together. In conducting the test, the test data of a prescribed pattern is sent from the transmitting means D through a cable 11 shown in full lines at first and the receiving means R collates the reception data with the test data. When the reception data is the same as the test data, it is decided that the means R, D are operated normally. Then changeover means 4, 5 are switched to conduct the similar self-test to conduct the test of the changeover means 4, 5 themselves. In using the cables being components of a duplex system as cables 11, 12 the disconnection of the cable is checked also.

Description

【発明の詳細な説明】 〔産業上の利用分野〕 この発明はリンクユニットのセルフテスト方法、特にレ
シーブ手段とトランスぽツタ手段の組合せを2組有し、
使用中の一方の組みに故障が生じたとき、切換え手段で
他方の組を選択使用するように構成した2重ループデー
タリンクシステム形成用のリンクユニットのセルフテス
ト方法に関するものである。
[Detailed Description of the Invention] [Industrial Application Field] The present invention provides a self-testing method for a link unit, in particular, it has two sets of a combination of a receiving means and a transpotter means,
The present invention relates to a self-testing method for a link unit for forming a double-loop data link system, in which when a failure occurs in one set in use, the other set is selectively used by a switching means.

〔従来の技術〕[Conventional technology]

第3図はデータリンクユニットの構成を示す図であり、
1はユニットケースで、このユニットケ □−ス内には
レシーブ手段とトランスミッタ手段の組合せを2組2,
3と両組を選択使用する切換え手段4,5および中央処
理装置(以下、CPUと称す)6が設けられている。
FIG. 3 is a diagram showing the configuration of the data link unit,
1 is a unit case, and inside this unit case, there are two combinations of receiving means and transmitting means 2,
3, switching means 4 and 5 for selectively using both sets, and a central processing unit (hereinafter referred to as CPU) 6 are provided.

〔発明が解決しようとする問題点〕[Problem that the invention seeks to solve]

従来のリンクユニットは以上のように構成されているの
で、そのセルフテスト方法は皆無であった。そこで、従
来は第3図に示すように、少なくとも2個以上のデータ
リンクユニットA@Bを用い、一方のデータリンクユニ
ットAのレシーブ手段Rと他方のデータリンクユニット
Bのトランスミッタ手段りとをケーブル7〜10で接続
して二重化ループ系を構成し、二重化ループ系全体とし
てテストすることが必要で、テストが面倒でsb、どの
リンクユニットが故障であるかを判別することができな
いという問題点があった。
Since the conventional link unit is configured as described above, there is no self-test method for it. Therefore, conventionally, as shown in FIG. 3, at least two data link units A@B are used, and the receiving means R of one data link unit A and the transmitter means of the other data link unit B are connected by a cable. 7 to 10 are connected to form a duplex loop system, and it is necessary to test the duplex loop system as a whole.The problem is that the test is cumbersome and it is not possible to determine which link unit is faulty. there were.

この発明は上記のような問題点を解消するためになされ
たもので、リンクユニット自体をテストするセルフテス
ト方法を得ることを目的とする。
The present invention has been made to solve the above-mentioned problems, and an object of the present invention is to provide a self-test method for testing the link unit itself.

〔問題点を解決するための手段〕[Means for solving problems]

この発明に係るリンクユニットのセルフテスト方法は、
一方の組を構成するレシーブ手段に他方の組を構成する
トランスミッタ手段を接続し、一方の組を構成するトラ
ンスミッタ手段に他方の組を構成するレシーブ手段を接
続するとともに上記トランスミッタ手段から一定パター
ンのテストデータを送信するようにしたものである。
The link unit self-test method according to the present invention includes:
The receiving means forming one set is connected to the transmitting means forming the other set, and the transmitting means forming one set is connected to the receiving means forming the other set, and a certain pattern is tested from the transmitting means. It is designed to send data.

〔作 用〕[For production]

この発明におけるリンクユニットは、レシーブ手段の受
信データとトランスミッタ手段から送信されたテストデ
ータとの一致を判断することによシテストされ、両デー
タの一致で正常と判断する。
The link unit in this invention is tested by determining whether the data received by the receiving means matches the test data transmitted from the transmitting means, and is determined to be normal if both data match.

〔実施例〕〔Example〕

以下、この発明の一実施例を前記第2図と同一部分に同
一符号を付した第1図について説明する。
An embodiment of the present invention will be described below with reference to FIG. 1, in which the same parts as in FIG. 2 are denoted by the same reference numerals.

第1図において、11.12はレシーブ手段Rとトラン
スミッタ手段りとを接続するケーブルである。
In FIG. 1, 11.12 is a cable connecting the receiving means R and the transmitting means.

上記の接続状態において、まず実線ケーブル11を通じ
てトランスミッタ手段りから一定パターンのテストデー
タを送信し、レシーブ手段Rでの受信データが上記テス
トデータと同一であれば、トランスミッタ手段りおよび
レシーブ手段Rが正常に動作していると判断できる。つ
いで、切換え手段4,5を切換えて同様のセルフテスト
を行なう。
In the above connection state, first transmit a certain pattern of test data from the transmitter means through the solid wire cable 11, and if the received data at the receive means R is the same as the above test data, the transmitter means and the receive means R are normal. It can be determined that the system is working properly. Then, the switching means 4 and 5 are switched to perform a similar self-test.

従って、このセルフテストによって切換え手段の正常動
作もテストできる〇 また、上記ケーブル11.12として、二重化ループ系
構成のケーブル7.8または9.10(第3図)を使用
すれば、このケーブルの断線チェックもできるものであ
る。
Therefore, the normal operation of the switching means can be tested by this self-test.In addition, if cable 7.8 or 9.10 (Fig. 3) with a dual loop system configuration is used as cable 11.12, this cable It is also possible to check for disconnections.

〔発明の効果〕〔Effect of the invention〕

以上のように、この発明によれば、トランスミッタ手段
とレシーブ手段を接続し、トランスミッタ手段から一定
パターンのテストデータを送信してテスト、するように
したので、リンクユニットのセルフテストがきわめて簡
単かつ迅速にできるとともに接続ケーブルの断線チェッ
クもできるという効果がある。
As described above, according to the present invention, since the transmitter means and the receiver means are connected and the test data of a certain pattern is transmitted from the transmitter means for testing, the self-test of the link unit is extremely easy and quick. This has the effect of being able to check for disconnections in the connecting cable.

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

第1図はこの発明の一実施例によるリンクユニットのセ
ルフテスト方法の説明図、第2図はリンクユニットの構
成図、第3図は従来におけるリンクユニットのテスト方
法の説明図である。 2.3はレシーブ手段とトランスミッタ手段の組合せ、
4は切換え手段。 なお、図中、同一符号は同−又は相当部分を示す。
FIG. 1 is an explanatory diagram of a link unit self-testing method according to an embodiment of the present invention, FIG. 2 is a configuration diagram of the link unit, and FIG. 3 is an explanatory diagram of a conventional link unit testing method. 2.3 is a combination of receiving means and transmitting means,
4 is a switching means. In addition, in the figures, the same reference numerals indicate the same or corresponding parts.

Claims (1)

【特許請求の範囲】[Claims] レシーブ手段とトランスミッタ手段の組合せを2組有し
、使用中の一方の組みに故障が生じたとき、切換え手段
で他方の組を選択使用するように構成したリンクユニッ
トにおいて、前記一方の組のレシーブ手段と他方の組の
トランスミッタ手段とを接続し、上記トランスミッタ手
段から一定パターンのデータを送信し、上記レシーブ手
段の受信データが上記送信データと同じであれば正常と
判断するようにしたことを特徴とするリンクユニットの
セルフテスト方法。
In a link unit having two combinations of a receive means and a transmitter means, and configured such that when a failure occurs in one of the sets in use, the other set is selectively used by the switching means. The means is connected to the transmitter means of the other set, a certain pattern of data is transmitted from the transmitter means, and if the data received by the receive means is the same as the transmitted data, it is determined to be normal. How to self-test the link unit.
JP60163919A 1985-07-26 1985-07-26 Self-test method for link unit Pending JPS6225534A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP60163919A JPS6225534A (en) 1985-07-26 1985-07-26 Self-test method for link unit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP60163919A JPS6225534A (en) 1985-07-26 1985-07-26 Self-test method for link unit

Publications (1)

Publication Number Publication Date
JPS6225534A true JPS6225534A (en) 1987-02-03

Family

ID=15783314

Family Applications (1)

Application Number Title Priority Date Filing Date
JP60163919A Pending JPS6225534A (en) 1985-07-26 1985-07-26 Self-test method for link unit

Country Status (1)

Country Link
JP (1) JPS6225534A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5509029A (en) * 1993-08-03 1996-04-16 Sunx Limited Serial data transmissions device and terminal unit for the same

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5509029A (en) * 1993-08-03 1996-04-16 Sunx Limited Serial data transmissions device and terminal unit for the same

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