JP3190493B2 - Transmission system equipment - Google Patents

Transmission system equipment

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Publication number
JP3190493B2
JP3190493B2 JP21038293A JP21038293A JP3190493B2 JP 3190493 B2 JP3190493 B2 JP 3190493B2 JP 21038293 A JP21038293 A JP 21038293A JP 21038293 A JP21038293 A JP 21038293A JP 3190493 B2 JP3190493 B2 JP 3190493B2
Authority
JP
Japan
Prior art keywords
transmission
transmission line
sub
station
abnormality
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.)
Expired - Fee Related
Application number
JP21038293A
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Japanese (ja)
Other versions
JPH0766796A (en
Inventor
顕博 谷口
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
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Filing date
Publication date
Application filed by Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP21038293A priority Critical patent/JP3190493B2/en
Publication of JPH0766796A publication Critical patent/JPH0766796A/en
Application granted granted Critical
Publication of JP3190493B2 publication Critical patent/JP3190493B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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  • Detection And Prevention Of Errors In Transmission (AREA)
  • Small-Scale Networks (AREA)
  • Maintenance And Management Of Digital Transmission (AREA)
  • Monitoring And Testing Of Transmission In General (AREA)

Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION

【０００１】[0001]

【産業上の利用分野】この発明は、３個以上の複数個の
伝送装置が各々主伝送路および副伝送路で接続された伝
送系統装置に関するもので、特に主伝送路を経由して情
報伝送を行なっている状態において、副伝送路の複数個
所の異常をより正確に検出できるようにした伝送系統装
置に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a transmission system in which three or more transmission devices are connected by a main transmission line and a sub transmission line , and more particularly to information transmitted via a main transmission line.
In the state where the
Transmission system equipment that can detect abnormalities in places more accurately
It is related to the location .

【０００２】[0002]

【従来の技術】従来の一般的な伝送システムでは、デー
タリンクの制御や誤りの制御回復などに責任を持つ制御
局と、制御局の指示によってデータリンクの制御機能を
実行する従属局から構成される。2. Description of the Related Art A conventional general transmission system is composed of a control station responsible for data link control and error control recovery, and a dependent station that executes a data link control function according to an instruction from the control station. You.

【０００３】図９は、従来の一般的な伝送システムの構
成を示す。図において、Ｍ１は伝送制御の中心となる制
御局、Ｓ１，Ｓ２，Ｓ３，Ｓ４は従属局（伝送装置）、
ＭＬ１は常用系のループ状の主伝送路、ＳＬ１は待機系
のループ状の副伝送路であり、前記制御局Ｍ１、従属局
Ｓ１，Ｓ２，Ｓ３，Ｓ４は各々系統のループ状伝送路Ｍ
Ｌ１，ＳＬ１で接続されている。FIG. 9 shows a configuration of a conventional general transmission system. In the figure, M1 is a control station that is the center of transmission control, S1, S2, S3, and S4 are slave stations (transmission devices).
ML1 is a main loop transmission line of the service system, SL1 is a sub-loop transmission line of the standby system, and the control station M1 and the subordinate stations S1, S2, S3, and S4 are loop transmission lines M of the system, respectively.
L1 and SL1 are connected.

【０００４】図１０は、図９の伝送システムと同様な構
成で副伝送路ＳＬ１の異常発生状態を示す。図におい
て、Ｘ１，Ｘ２は伝送路異常発生地点を示す。FIG. 10 shows an abnormal state of the sub-transmission line SL1 having the same configuration as that of the transmission system of FIG. In the figure, X1 and X2 indicate transmission path abnormality occurrence points.

【０００５】図１１は、本発明が適用される伝送装置の
Ｈ／Ｗ構成の概略図であり、１はＣＰＵ、２はプログラ
ム部、３はデータ部、４は通信制御用ＩＣ、ＳＷ１１，
ＳＷ１２，ＳＷ１３，ＳＷ１４は何れも伝送路接続スイ
ッチ、ＳＤ１，ＭＤ１は何れも伝送路異常検出器、ＳＬ
Ｐ１，ＳＬＰ２，ＳＬＰ３，ＳＬＰ４，ＳＬＰ５は何れ
も伝送路の異常をオペレータに伝える伝送路状態表示用
ＬＥＤ（発光ダイオード、以下同じ）である。ＭＬ１は
図９で示した主伝送路、ＳＬ１は、図９で示した副伝送
路であり、これら主伝送路ＭＬ１、副伝送路ＳＬ１に、
図９に示した従属局（伝送装置）Ｓ１，Ｓ２，Ｓ３，Ｓ
４が接続されている。また、前記プログラム部２、デー
タ部３、通信制御用ＩＣ４、伝送路接続スイッチＳＷ１
１〜ＳＷ１４、伝送路異常検出器ＳＤ１、ＭＤ１、伝送
路状態表示用ＬＥＤ、図９で示した従属局（伝送装置）
Ｓ１，Ｓ２，Ｓ３，Ｓ４は、破線で示す共通のバス５で
ＣＰＵ１と接続され、プログラム部２に格納されたプロ
グラムの構成により任意の伝送路の接続が可能となって
いる。FIG. 11 is a schematic diagram of an H / W configuration of a transmission apparatus to which the present invention is applied. 1 is a CPU, 2 is a program unit, 3 is a data unit, 4 is a communication control IC, SW11,
SW12, SW13, SW14 are all transmission path connection switches, SD1, MD1 are all transmission path abnormality detectors, SL
Each of P1, SLP2, SLP3, SLP4, and SLP5 is a transmission path status display LED (light emitting diode, the same applies hereinafter) for transmitting an abnormality of the transmission path to an operator. ML1 is the main transmission line shown in FIG. 9, and SL1 is the sub transmission line shown in FIG. 9. These main transmission line ML1 and sub transmission line SL1
Slave stations (transmission devices) S1, S2, S3, S shown in FIG.
4 are connected. Further, the program section 2, data section 3, communication control IC 4, transmission path connection switch SW1
1 to SW14, transmission path abnormality detectors SD1, MD1, transmission path state display LED, dependent station (transmission apparatus) shown in FIG.
S1, S2, S3, and S4 are connected to the CPU 1 via a common bus 5 indicated by a broken line, and an arbitrary transmission path can be connected by a configuration of a program stored in the program unit 2.

【０００６】この図１１において２系統の伝送路即ち主
伝送路ＭＬ１及び副伝送路ＳＬ１はそれぞれ伝送路接続
スイッチＳＷ１１，ＳＷ１２，ＳＷ１３，ＳＷ１４で任
意の接続形態を選択できるようになっており通信制御用
ＩＣ４へ接続される。データ伝送では、データの送受信
を行う場合、予め伝送路に或る一定の信号即ち同期信号
を送出しておき、データの送受信のタイミングをとる必
要がある。これらの制御を行うのが通信制御用ＩＣ４で
ある。これらの伝送路スイッチＳＷ１１〜ＳＷ１４、通
信制御用ＩＣ４等の機器は、共通バス５でＣＰＵ１、プ
ログラム部２、データ部３と接続されており、プログラ
ムの構成で任意の伝送路接続及びデータの送受信が可能
となっている。In FIG. 11, two transmission lines, that is, a main transmission line ML1 and a sub transmission line SL1 can be selected in any connection form by transmission line connection switches SW11, SW12, SW13, and SW14, respectively. To the IC 4 for use. In data transmission, when transmitting and receiving data, it is necessary to transmit a certain signal, that is, a synchronization signal, to a transmission path in advance, and to take the timing of transmitting and receiving data. The communication control IC 4 performs these controls. The devices such as the transmission line switches SW11 to SW14 and the communication control IC 4 are connected to the CPU 1, the program unit 2, and the data unit 3 by a common bus 5, and the transmission line connection and data transmission / reception are performed by a program. Is possible.

【０００７】また各伝送路即ち主伝送路ＭＬ１及び副伝
送路ＳＬ１には、伝送路異常検出器ＭＤ１，ＳＤ１が配
置してあり、伝送路異常検出器ＭＤ１は主伝送路ＭＬ１
の同期信号があることを検出して主伝送路ＭＬ１が正常
であることを検出し、主伝送路ＭＬ１の同期信号が無い
ことを検出して主伝送路ＭＬ１の異常を検出する。伝送
路異常検出器ＳＤ１は副伝送路ＳＬ１の同期信号がある
ことを検出して副伝送路ＳＬ１が正常であることを検出
し、副伝送路ＳＬ１の同期信号が無いことを検出して副
伝送路ＳＬ１の異常を検出する。これら伝送路異常検出
器ＭＤ１，ＳＤ１にて検出された伝送路の異常をオペレ
ータへ知らせる一手段として点消灯可能なＬＥＤ ＳＬ
Ｐ１，ＳＬＰ２，ＳＬＰ３，ＳＬＰ４，ＳＬＰ５が配置
されている。Further, transmission line abnormality detectors MD1 and SD1 are arranged on each transmission line, ie, the main transmission line ML1 and the sub transmission line SL1, and the transmission line abnormality detector MD1 is connected to the main transmission line ML1.
To detect that the main transmission line ML1 is normal, and to detect that there is no synchronization signal of the main transmission line ML1 to detect abnormality of the main transmission line ML1. The transmission line abnormality detector SD1 detects the presence of the synchronization signal of the sub-transmission line SL1, detects that the sub-transmission line SL1 is normal, detects the absence of the synchronization signal of the sub-transmission line SL1, and performs the sub-transmission. An abnormality in the road SL1 is detected. An LED SL that can be turned on and off as a means for notifying an operator of a transmission line abnormality detected by the transmission line abnormality detectors MD1 and SD1.
P1, SLP2, SLP3, SLP4, and SLP5 are arranged.

【０００８】図１２は、図９の制御局（伝送装置）Ｍ１
の伝送路接続状態を詳細に示す図で、図１１に示すＣＰ
Ｕ１、プログラム部２、データ部３、共通バス５の図示
は省略してある。この図１２において、ＳＷ１１は主伝
送路ＭＬ１の入力を選択するスイッチで、接点ＭＲ０と
接点ＭＲ２とを選択することで主伝送路ＭＬ１の入力が
通信制御用ＩＣ４の入力に接続される。ＳＷ１２は主伝
送路ＭＬ１への出力を選択するスイッチで、接点ＭＳ０
と接点ＭＳ２とを選択することで通信制御用ＩＣ４の出
力が主伝送路ＭＬ１へ出力する主伝送路出力端ＭＬ１０
に接続される。FIG. 12 shows a control station (transmission apparatus) M1 shown in FIG.
FIG. 11 is a diagram showing in detail the transmission path connection state of FIG.
Illustration of U1, the program section 2, the data section 3, and the common bus 5 is omitted. In FIG. 12, SW11 is a switch for selecting the input of the main transmission line ML1, and the input of the main transmission line ML1 is connected to the input of the communication control IC 4 by selecting the contact MR0 and the contact MR2. SW12 is a switch for selecting an output to the main transmission line ML1, and a contact MS0.
And the contact MS2, the output of the communication control IC 4 is output to the main transmission line ML1.
Connected to.

【０００９】ＳＷ１３は副伝送路ＳＬ１の入力を選択す
るスイッチで、接点ＳＳ０と接点ＳＳ２とを選択するこ
とで通信制御用ＩＣ４の出力が副伝送路ＳＬ１の出力端
ＳＬ１０へ接続される。ＳＷ１４は副伝送路ＳＬ１から
の入力を選択するスイッチであり、接点ＳＲ０と接点Ｓ
Ｒ１とが選択され副伝送路ＳＬ１の終端となる。ＭＤ１
は主伝送路ＭＬ１の断線等の異常を検出する主伝送路異
常検出器、ＳＤ１は副伝送路ＳＬ１の断線などの異常を
検出する副伝送路異常検出器である。SW13 is a switch for selecting the input of the sub-transmission line SL1. By selecting the contact SS0 and the contact SS2, the output of the communication control IC 4 is connected to the output terminal SL10 of the sub-transmission line SL1. SW14 is a switch for selecting an input from the sub-transmission line SL1.
R1 is selected and becomes the end of the sub-transmission line SL1. MD1
Is a main transmission line abnormality detector for detecting an abnormality such as disconnection of the main transmission line ML1, and SD1 is a sub transmission line abnormality detector for detecting an abnormality such as disconnection of the sub transmission line SL1.

【００１０】図１３は、図９の従属局（伝送装置）Ｓ
１，Ｓ２，Ｓ３，Ｓ４の伝送路の接続状態を詳細に示す
図で、図１１に示すＣＰＵ１、プログラム部２、データ
部３、共通バス５の図示は省略してある。この図１３に
おけるスイッチの構成は、図１２と同様であるが、副伝
送路出力選択スイッチＳＷ１３の選択が異なり、接点Ｓ
Ｓ０と接点ＳＳ１とが選択され、副伝送路ＳＬ１の入力
が副伝送路の出力に接続される。FIG. 13 shows a subordinate station (transmission apparatus) S of FIG.
FIG. 11 is a diagram showing in detail the connection states of the transmission lines 1, S2, S3, and S4, and the illustration of the CPU 1, the program unit 2, the data unit 3, and the common bus 5 shown in FIG. 11 is omitted. The configuration of the switch in FIG. 13 is the same as that of FIG. 12, except that the selection of the sub-transmission-path output selection switch SW13 is different.
S0 and the contact SS1 are selected, and the input of the sub-transmission line SL1 is connected to the output of the sub-transmission line.

【００１１】図１４は前述の図９、図１０、図１３、で
示される従属局（伝送装置）Ｓ１〜Ｓ４から、後述の図
９、図１０、図１２で示される制御局（伝送装置）Ｍ１
へ送る伝送路情報データフレームの例を示したもので、
従属局（伝送装置）Ｓ１〜Ｓ４（図１１、図１２、図１
４）が認識している伝送路異常状態を入れた伝送路情報
部Ｉ、伝送路情報データフレームであることを示す情報
を入れた制御部ＩＭ、送信元を示す自局ＮＯ．情報を入
れる部分である局ＮＯ．部、及びフレームの先頭と末尾
を示す情報部分であるフラグ部で構成される。FIG. 14 is a diagram showing a sequence of operations performed by the dependent stations (transmission devices) S1 to S4 shown in FIGS. 9, 10, and 13 from the control stations (transmission devices) shown in FIGS. 9, 10, and 12 described later. M1
This shows an example of the transmission path information data frame sent to
Dependent stations (transmission devices) S1 to S4 (FIG. 11, FIG. 12, FIG.
4), the transmission path information section I containing the transmission path abnormal state recognized, the control section IM containing information indicating that the frame is a transmission path information data frame, and the local station NO. Station NO. And a flag portion, which is an information portion indicating the beginning and end of the frame.

【００１２】図１５は、前述の図１４で示した伝送路情
報データフレームを用いて各従属局（伝送装置）Ｓ１、
Ｓ２、Ｓ３、Ｓ４から送られてきた伝送路情報Ｉを前記
制御局Ｍ１のデータ部３（前述の図１１）に格納する伝
送路状態テーブルと、各従属局（伝送装置）Ｓ１、Ｓ
２、Ｓ３、Ｓ４から送られてきた各伝送路情報と対応Ｌ
ＥＤの点灯状態との関係を示す図である。FIG. 15 is a diagram showing each subordinate station (transmission apparatus) S 1, using the transmission path information data frame shown in FIG.
A transmission path state table for storing the transmission path information I sent from S2, S3, and S4 in the data section 3 (FIG. 11 described above) of the control station M1, and each dependent station (transmission apparatus) S1, S
2, transmission line information transmitted from S3 and S4 and corresponding L
It is a figure showing the relation with the lighting state of ED.

【００１３】図１６は、図１５で示した伝送路状態テー
ブルを基に、オペレータに副伝送路の状態を伝えるため
伝送路状態ＬＥＤ ＳＬＰ１，ＳＬＰ２，ＳＬＰ３，Ｓ
ＬＰ４，ＳＬＰ５を、プログラム部２（図１１）のプロ
グラムによって点消灯させる処理の概略を示すフローチ
ャートである。FIG. 16 shows transmission line status LEDs SLP1, SLP2, SLP3, SLP for transmitting the status of the sub transmission line to the operator based on the transmission line status table shown in FIG.
12 is a flowchart schematically showing a process of turning on and off LP4 and SLP5 by a program of a program unit 2 (FIG. 11).

【００１４】次に動作について図９の伝送システム構成
例と、図９の制御局（伝送装置）Ｍ１について伝送路接
続状態を示した図１２及び図９の従属局（伝送装置）Ｓ
１，Ｓ２，Ｓ３，Ｓ４について伝送路接続状態を示した
図１３を用いて説明する。Next, the operation of the transmission system shown in FIG. 9 and the dependent station (transmission apparatus) S of FIGS. 12 and 9 showing the transmission path connection state for the control station (transmission apparatus) M1 of FIG.
1, S2, S3, and S4 will be described with reference to FIG.

【００１５】図９の制御局（伝送装置）Ｍ１は図１２で
示すように、伝送路接続スイッチＳＷ１２の接点ＭＳ２
と接点ＭＳ０とを接続することで、矢印で示すように、
通信制御用ＩＣ４から出力される同期信号を主伝送路出
力端ＭＬ１Ｏから主伝送路ＭＬ１へ出力する。副伝送路
ＳＬ１の出力端ＳＬ１Ｏには伝送路接続スイッチＳＷ１
３の接点ＳＳ２と接点ＳＳ０とを接続することで、矢印
で示すように、通信制御用ＩＣ４から出力される同期信
号を出力する。As shown in FIG. 12, the control station (transmission device) M1 of FIG.
And the contact MS0, as shown by the arrow,
The synchronization signal output from the communication control IC 4 is output from the main transmission line output terminal ML1O to the main transmission line ML1. The transmission line connection switch SW1 is connected to the output terminal SL10 of the sub transmission line SL1.
By connecting the third contact SS2 and the third contact SS0, a synchronization signal output from the communication control IC 4 is output as indicated by an arrow.

【００１６】図９の各従属局（伝送装置）Ｓ１，Ｓ２，
Ｓ３，Ｓ４は、何れも図１３で示すように、伝送路接続
スイッチＳＷ１２の接点ＭＳ２と接点ＭＳ０とを接続し
通信制御用ＩＣ４から出力される同期信号を主伝送路Ｍ
Ｌ１に出力する。副伝送路ＳＬ１の出力には伝送路接続
スイッチＳＷ１４の接点ＳＲ０と接点ＳＲ１とを接続す
ると共に、伝送路接続スイッチＳＷ１３の接点ＳＳ１と
接点ＳＳ０とを接続することで、入力側の副伝送路ＳＬ
１で入力した同期信号を出力側の副伝送路ＳＬ１へ出力
する。このような伝送路接続を行った各伝送装置Ｍ１
（制御局），Ｓ１，Ｓ２，Ｓ３，Ｓ４（従属局）は主伝
送路異常検出器ＭＤ１で常時同期信号を見ることで主伝
送路ＭＬ１の異常を検出している。副伝送路ＳＬ１も同
様に、副伝送路異常検出器ＳＤ１にて常時同期信号を検
出している。Each slave station (transmission apparatus) S1, S2,
As shown in FIG. 13, S3 and S4 connect the contact MS2 and the contact MS0 of the transmission path connection switch SW12, and transmit the synchronization signal output from the communication control IC 4 to the main transmission path M4.
Output to L1. By connecting the contact SR0 and the contact SR1 of the transmission path connection switch SW14 to the output of the sub transmission path SL1, and connecting the contact SS1 and the contact SS0 of the transmission path connection switch SW13, the input side sub transmission path SL
The synchronization signal input in 1 is output to the sub-transmission line SL1 on the output side. Each of the transmission devices M1 that have made such a transmission path connection
The (control station), S1, S2, S3, and S4 (dependent stations) detect abnormality in the main transmission line ML1 by constantly watching the synchronization signal with the main transmission line abnormality detector MD1. Similarly, the sub-transmission line SL1 always detects a synchronization signal by the sub-transmission line abnormality detector SD1.

【００１７】ここまで述べた伝送システムにおいて副伝
送路ＳＬ１に異常が発生した場合の動作について、従属
局（伝送装置）Ｓ１，Ｓ２，Ｓ３，Ｓ４から制御局（伝
送装置）Ｍ１へ伝送路状態を送るための伝送路情報デー
タフレームを示した図１４、制御局（伝送装置）Ｍ１自
身が検出した伝送路状態を格納する伝送路状態テーブル
１で示し各従属局（伝送装置）Ｓ１，Ｓ２，Ｓ３，Ｓ４
から送られてきた伝送路情報を格納するための伝送路状
態テーブルをテーブル２，テーブル３，テーブル４，テ
ーブル５で示した図１５、伝送路状態テーブルを基にオ
ペレータに伝送路状態を伝える伝送路状態ＬＥＤ点消灯
処理のフローチャートである図１６を用いて説明する。In the above-described transmission system, when an abnormality occurs in the sub-transmission line SL1, the operation of the substations (transmission devices) S1, S2, S3, S4 from the subordinate stations (transmission devices) to the control station (transmission device) M1 is performed. FIG. 14, which shows a transmission path information data frame to be transmitted, is shown in a transmission path state table 1 for storing transmission path states detected by the control station (transmission apparatus) M1 itself, and each dependent station (transmission apparatus) S1, S2, S3 , S4
FIG. 15 shows a transmission path state table for storing transmission path information sent from the network shown in Table 2, Table 3, Table 4, and Table 5. Transmission based on the transmission path state table to notify the operator of the transmission path state. This will be described with reference to FIG. 16 which is a flowchart of the road state LED turning on / off process.

【００１８】副伝送路異常検出器ＳＤ１によって副伝送
路ＳＬ１の異常を検出した従属局（伝送装置）Ｓ１，Ｓ
２，Ｓ３，Ｓ４は、副伝送路異常を制御局（伝送装置）
Ｍ１へ伝えるために、図１４で示す伝送路情報データフ
レーム中の伝送路情報Ｉに、検出した伝送路異常情報
「１」を入れて、それぞれ自局ＮＯ．、制御部ＩＭを付
加し制御局（伝送装置）Ｍ１へ送信する。この伝送路情
報データフレームを受信した制御局（伝送装置）Ｍ１は
伝送路情報データフレーム中の自局ＮＯ．を基に、図９
に示す伝送路状態テーブル２〜５に対応する従属局（伝
送装置）１，２，３，４の位置に伝送路情報Ｉを格納す
る。制御局（伝送装置）Ｍ１自身が検出した伝送路の状
態については、一定周期毎に制御局（伝送装置）Ｍ１に
対応した伝送路状態テーブル１（図１５）へ格納する。Dependent stations (transmitters) S1, S that have detected an abnormality in sub-transmission line SL1 by sub-transmission line abnormality detector SD1.
2, S3, and S4 report the sub-transmission path abnormality to the control station (transmission device)
In order to transmit the detected transmission path abnormality information “1” to the transmission path information I in the transmission path information data frame shown in FIG. , And a control unit IM, and transmits the result to the control station (transmission device) M1. The control station (transmission device) M1 that has received the transmission path information data frame transmits its own station No. in the transmission path information data frame. Based on FIG.
The transmission path information I is stored at the positions of the dependent stations (transmission apparatuses) 1, 2, 3, and 4 corresponding to the transmission path state tables 2 to 5 shown in FIG. The state of the transmission path detected by the control station (transmission apparatus) M1 itself is stored in the transmission path state table 1 (FIG. 15) corresponding to the control station (transmission apparatus) M1 at regular intervals.

【００１９】ここまでの処理を、伝送路情報データフレ
ームを受信する毎に行うことにより、伝送システムの副
伝送路状態を示す伝送路状態テーブル（図１５のテーブ
ル２〜５）が作成される事となる。この情報（伝送路状
態テーブル）をオペレータに伝えるために図１４の伝送
路状態表示用ＬＥＤ ＳＬＰ１，ＳＬＰ２，ＳＬＰ３，
ＳＬＰ４，ＳＬＰ５の点消灯を一定周期で行う。The above-described processing is performed each time a transmission path information data frame is received, whereby a transmission path state table (tables 2 to 5 in FIG. 15) indicating the sub transmission path state of the transmission system is created. Becomes In order to convey this information (transmission path state table) to the operator, the transmission path state display LEDs SLP1, SLP2, SLP3, and FIG.
SLP4 and SLP5 are turned on and off at regular intervals.

【００２０】図１６は、プログラム部２（図１１）のプ
ログラムによって実行される伝送路状態ＬＥＤ ＳＬＰ
１，ＳＬＰ２，ＳＬＰ３，ＳＬＰ４の点消灯処理の概略
を示すフローチャートで、以下図１６によって点消灯処
理について説明する。FIG. 16 shows the transmission line status LED SLP executed by the program of the program section 2 (FIG. 11).
The light-on / light-off process will be described below with reference to FIG.

【００２１】伝送装置は、制御局Ｍ１、従属局１，２，
３，４と５つあるので、先ず、ステップ１において伝送
路状態テーブルの先頭（従属局４に対応するテーブル
５）を指す添字ｎに５をセットする。この５のセット
は、伝送装置の数が最初から５と判ってる場合は当初か
ら設定してもよいが、制御局Ｍ１においてオペレータが
設定してもよい。ステップ２にて添字ｎが指す伝送路情
報を読み出す。ステップ３ではステップ２で読み出した
伝送路情報に、副伝送路異常が発生しているか判断を行
い、発生していない場合（ＮＯの場合）はステップ４を
実行し、異常が発生している場合（ＹＥＳの場合）はス
テップ５を実行する。The transmission device comprises a control station M1, subordinate stations 1, 2, 2,
First, in step 1, 5 is set to a subscript n indicating the head of the transmission path state table (table 5 corresponding to the dependent station 4). This set of 5 may be set from the beginning if the number of transmission devices is known to be 5 from the beginning, but may be set by the operator at the control station M1. In step 2, the transmission path information indicated by the subscript n is read. In step 3, it is determined whether or not the sub-transmission path abnormality has occurred in the transmission path information read in step 2, and if not (in the case of NO), step 4 is executed, and if an abnormality has occurred. If (YES), step 5 is executed.

【００２２】ステップ５はＬＥＤ ＳＬＰ１，ＳＬＰ
２，ＳＬＰ３，ＳＬＰ４，ＳＬＰ５を点灯させる処理
で、何れか一のＬＥＤを点灯させる処理をすると、ＥＮ
Ｄとなって、図１６のフローチャートでの点消灯処理を
終了し、次の点消灯処理の周期まで待機状態となる。Step 5 is the LED SLP1, SLP
In the process of turning on SLP3, SLP4, and SLP5, the process of turning on one of the LEDs results in EN
At D, the light-on / light-off processing in the flowchart of FIG. 16 ends, and the apparatus enters a standby state until the next cycle of the light-on / off processing.

【００２３】ステップ４は、添字ｎが示すテーブルに対
応（図１５参照）するＬＥＤ ＳＬＰ１，ＳＬＰ２，Ｓ
ＬＰ３，ＳＬＰ４，ＳＬＰ５を消灯させる処理で、次に
ステップ６へと進む。ステップ６では、次に処理する伝
送路状態テーブルを読み込むために添字ｎに１をマイナ
スする。最後にステップ７にて伝送路状態テーブルを全
て処理したか添字ｎにて判断し、全て処理していない場
合には、ステップ２から処理を繰り返す。In step S4, the LEDs SLP1, SLP2, SLP corresponding to the table indicated by the subscript n (see FIG. 15)
In the process of turning off LP3, SLP4, and SLP5, the process proceeds to step 6. In step 6, 1 is subtracted from the subscript n to read the transmission path state table to be processed next. Finally, it is determined by the subscript n whether or not all the transmission path state tables have been processed in step 7, and if not all the processing is repeated from step 2.

【００２４】例えば、従属局Ｓ４の伝送路情報が取り込
まれる場合は、従属局Ｓ４の伝送路状態はテーブル５に
格納されているので、テーブル５の添字５がステップ２
において読み出され、ステップ３において副伝送路ＳＬ
１に異常が無い（ＮＯ）と判定されると、ステップ４に
おいて、テーブル５（従属局Ｓ４が検出した伝送路情
報）に対応するＬＥＤ ＳＬＰ５を消灯し、ステップ６
に進む。ステップ６において、５から１がマイナスさ
れ、その差の値は４であるので、次のステップ７におい
て０に等しくないと判断（ＮＯ）され、ステップ２に戻
り、前記ステップ６における差の値４から、テーブル４
（従属局Ｓ３が検出した伝送路情報）を読み込む。For example, when the transmission line information of the subordinate station S4 is taken in, the transmission line state of the subordinate station S4 is stored in the table 5, so that the subscript 5 of the table 5 is used in step 2.
, And in step 3, the sub-transmission line SL
If it is determined that there is no abnormality in No. 1 (NO), the LED SLP5 corresponding to the table 5 (transmission path information detected by the dependent station S4) is turned off in step 4, and
Proceed to. In step 6, 1 is subtracted from 5 and the value of the difference is 4, so that it is determined in step 7 that the difference is not equal to 0 (NO), the process returns to step 2, and the difference value of 4 in step 6 is returned. From Table 4
(Transmission path information detected by the dependent station S3).

【００２５】テーブル４（従属局Ｓ３が検出した伝送路
情報）に異常がなければステップ３からステップ４に進
み、テーブル４（従属局Ｓ３が検出した伝送路情報）に
対応するＬＥＤ ＳＬＰ４を消灯し、ステップ６に進
む。ステップ６では前述と同様にして、今度は４から１
がマイナスされ、その差の値は３となり、以下、前述と
同様に処理されて、テーブル３，テーブル２……と、前
記ステップ２〜ステップ７の処理を繰り返し、従属局Ｓ
４，Ｓ３，Ｓ２，Ｓ１対応のどのテーブルにも異常がな
ければ、テーブル１（制御局）が読み込まれ、ステップ
６において、１−１＝０となり、ステップ７においてＹ
ＥＳとなって、図１６のフローチャートでの点消灯処理
を終了し、次の点消灯処理の時期まで待機状態となる。If there is no abnormality in the table 4 (transmission line information detected by the dependent station S3), the process proceeds from step 3 to step 4, and the LED SLP4 corresponding to the table 4 (transmission line information detected by the dependent station S3) is turned off. Then, go to step 6. In step 6, in the same manner as described above, this time from 4 to 1
Is subtracted, and the difference value becomes 3. Thereafter, the processing is performed in the same manner as described above, and the processing of Table 3, Table 2,...
If there is no abnormality in any of the tables corresponding to S4, S3, S2, and S1, table 1 (control station) is read, and in step 6, 1-1 = 0, and in step 7, Y = 0.
As the state becomes ES, the light-on / light-off process in the flowchart of FIG.

【００２６】テーブル５，テーブル４，テーブル３，テ
ーブル２，テーブル１のうち何れか一のテーブルに伝送
路異常が発生していると、ステップ５において、対応す
るＬＥＤ ＳＬＰ１，ＳＬＰ２，ＳＬＰ３，ＳＬＰ４，
ＳＬＰ５を点灯させ、ＥＮＤとなって、図１６のフロー
チャートでの点消灯処理を終了し、次の点消灯処理の周
期まで待機状態となる。If any one of Table 5, Table 4, Table 3, Table 2, and Table 1 has a transmission line abnormality, in Step 5, the corresponding LED SLP1, SLP2, SLP3, SLP4
The SLP 5 is turned on, the state becomes END, the light-on / off processing in the flowchart of FIG. 16 is completed, and the apparatus enters a standby state until the next cycle of the light-on / off processing.

【００２７】以上のステップ１からステップ７までの処
理を行うと、現状の伝送路状態を示すＬＥＤ点消灯状態
となる。オペレータはこのＬＥＤ点消灯状態をチェック
し、異常の場合は伝送路の取り替え等の対処を行う。When the processing from step 1 to step 7 is performed, the LED is turned on and off, indicating the current transmission path state. The operator checks the LED on / off state, and if abnormal, takes measures such as replacing the transmission line.

【００２８】次に、副伝送路ＳＬ１の２箇所に異常が発
生している場合の異常発生箇所の確認について、説明す
る。Next, a description will be given of how to confirm the location where the abnormality has occurred when two locations of the sub-transmission line SL1 have an abnormality.

【００２９】図１３は、従来の従属局（伝送装置）Ｓ１
（Ｓ２，Ｓ３，Ｓ４も同じ構成）の伝送路接続を示した
図である。図で示すように伝送路接続スイッチＳＷ１４
の接点ＳＲ０と接点ＳＲ１の接続及び伝送路接続スイッ
チＳＷ１３の接点ＳＳ１と接点ＳＳ０との接続をするこ
とにより、副伝送路の入力側（図の右側）において、副
伝送路ＳＬ１から入力した同期信号を、副伝送路出力側
（図の左側）から副伝送路ＳＬ１に直接出力するような
副伝送路ＳＬ１の接続形態をとっていた。FIG. 13 shows a conventional slave station (transmission apparatus) S1.
FIG. 4 is a diagram showing transmission line connections of (S2, S3, and S4 have the same configuration). As shown in the figure, the transmission path connection switch SW14
The connection between the contacts SR0 and SR1 and the connection between the contact SS1 and the contact SS0 of the transmission line connection switch SW13 connect the synchronization signal input from the sub transmission line SL1 on the input side (right side in the figure) of the sub transmission line. Is directly connected to the sub-transmission line SL1 from the sub-transmission line output side (left side in the figure).

【００３０】図１０は、前述の図７のような接続を行っ
た複数の従属局（伝送装置）Ｓ１，Ｓ２，Ｓ３，Ｓ４と
一台の制御局（伝送装置）Ｍ１を主伝送路ＭＬ１、副伝
送路ＳＬ１で接続した伝送システムの構成例で、副伝送
路ＳＬ１の２カ所で副伝送路異常Ｘ１，Ｘ２が発生して
いることを示している。このような伝送システム構成例
において、副伝送路異常Ｘ１，Ｘ２の検出から、オペレ
ーターが対処するまでを、伝送路異常を制御局（伝送装
置）Ｍ１に送信するための伝送路情報データフレーム
（図１４）、各従属局（伝送装置）Ｓ１，Ｓ２，Ｓ３，
Ｓ４から送られてきた伝送路情報を格納するための伝送
路状態テーブル（図１５）、及び伝送路状態テーブルを
基にオペレーターに異常を伝える伝送路状態ＬＥＤ点消
灯処理（図１６）を用いて説明する。FIG. 10 shows a plurality of slave stations (transmission devices) S1, S2, S3, S4 and a single control station (transmission device) M1 connected as shown in FIG. In the configuration example of the transmission system connected by the sub-transmission line SL1, it is shown that the sub-transmission line abnormalities X1 and X2 have occurred at two locations of the sub-transmission line SL1. In such a transmission system configuration example, a transmission line information data frame for transmitting a transmission line abnormality to the control station (transmission device) M1 from the detection of the sub transmission line abnormalities X1 and X2 until the operator takes action (see FIG. 14), each dependent station (transmission device) S1, S2, S3
Using a transmission path state table (FIG. 15) for storing the transmission path information sent from S4, and a transmission path state LED turning on / off process (FIG. 16) for notifying an operator based on the transmission path state table. explain.

【００３１】図１０の様に従属局（伝送装置）Ｓ４と従
属局（伝送装置）Ｓ３との間の副伝送路ＳＬ１に異常Ｘ
１が発生した場合、異常発生地点Ｘ１より信号伝送方向
で下流にある従属局（伝送装置）Ｓ３，Ｓ２，Ｓ１，制
御局（伝送装置）Ｍ１）には、前述の図１３で説明した
ように、各従属局（伝送装置）Ｓ４，Ｓ３，Ｓ２，Ｓ１
が何れも伝送路接続スイッチＳＷ１３，ＳＷ１４で副伝
送路入力を直接副伝送路出力へ接続しているために、同
期信号が流れない状態になり、図の異常発生地点Ｘ１よ
り下流の伝送装置（従属局Ｓ３，Ｓ２，Ｓ１，制御局Ｍ
１）は副伝送路ＳＬ１の異常を検出することとなる。As shown in FIG. 10, when the sub-transmission line SL1 between the subordinate station (transmission apparatus) S4 and the subordinate station (transmission apparatus) S3 has an abnormal X
When 1 occurs, the dependent stations (transmission devices) S3, S2, S1, and the control station (transmission device) M1 downstream from the abnormality occurrence point X1 in the signal transmission direction are transmitted as described with reference to FIG. , Each slave station (transmission device) S4, S3, S2, S1
Are connected to the sub-transmission line input directly to the sub-transmission line output by the transmission line connection switches SW13 and SW14, so that the synchronization signal does not flow, and the transmission device ( Dependent stations S3, S2, S1, control station M
1) detects an abnormality in the sub-transmission line SL1.

【００３２】副伝送路ＳＬ１の異常を検出した伝送装置
（従属局Ｓ３，Ｓ２，Ｓ１，制御局Ｍ１）は、図１４で
示す伝送路情報データフレーム中の伝送路情報Ｉに副伝
送路異常「１」をセットし、伝送路情報Ｉ即ち「０００
００００００１」を送信する。これらのフレームを受信
した制御局（伝送装置）Ｍ１は、伝送路状態テーブル
（図１５）に前記伝送路情報Ｉを格納する。その結果、
伝送路状態テーブルの内容は図１５に示すように、テー
ブル４（従属局Ｓ３に対応）、テーブル３（従属局Ｓ２
に対応）、テーブル２（従属局Ｓ１に対応）、テーブル
１（制御局Ｍ１に対応）は全て「００００００００１」
となり、「従属局Ｓ４以外の全ての局が副伝送路の異常
を検出している」となる。The transmission apparatus detects an abnormality of the sub-transmission lines SL1 (dependent station S3, S2, S1, the control station M1) is sub-transmission lines abnormality in the transmission path information I of the transmission path information in the data frame shown in FIG. 14 " 1 ”is set, and the transmission path information I, ie,“ 000 ”is set.
0000001 ". The control station (transmission apparatus) M1 that has received these frames stores the transmission path information I in the transmission path state table (FIG. 15). as a result,
As shown in FIG. 15, the contents of the transmission path state table are table 4 (corresponding to the dependent station S3), table 3 (dependent station S2).
, Table 2 (corresponding to the dependent station S1), and Table 1 (corresponding to the control station M1) are all "00000000001".
And "all stations other than the dependent station S4 have detected an abnormality in the sub-transmission path".

【００３３】ここで図１６の伝送路状態ＬＥＤ点消灯処
理を行うと、前述のように、ステップ２においては、副
伝送路ＳＬ１の信号伝送方向上流側から伝送路状態テー
ブルを読み込むため、従属局Ｓ３に対応したテーブル４
を読み込んだ時にステップ３で副伝送路異常が検出され
て、ステップ５に進み、テーブル４（従属局Ｓ３）に対
応するＬＥＤ ＳＬＰ４を点灯して、点消灯処理はＥＮ
Ｄとなる。従って、従属局Ｓ３より、副伝送路ＳＬ１の
信号伝送方向下流側にある従属局Ｓ２，従属局Ｓ１，制
御局Ｍ１の各々に対応するテーブル３，テーブル２，テ
ーブル１は読み込まれず、各々に対応するＬＥＤ ＳＬ
Ｐ３，ＳＬＰ２，ＳＬＰ１は消灯のままとなる。When the transmission line status LED turning on / off processing of FIG. 16 is performed, as described above, in step 2, the transmission line state table is read from the upstream side in the signal transmission direction of the sub transmission line SL1. Table 4 corresponding to S3
Is read in step 3, the sub-transmission line abnormality is detected in step 3, the process proceeds to step 5, the LED SLP4 corresponding to the table 4 (dependent station S3) is turned on, and the light-on / off process is set to EN.
D. Therefore, from the dependent station S3, the tables 3, 3, and 1 corresponding to the dependent stations S2, the dependent stations S1, and the control station M1, which are located downstream of the sub-transmission line SL1 in the signal transmission direction, are not read. LED SL
P3, SLP2, and SLP1 remain unlit.

【００３４】このような伝送路状態ＬＥＤの点消灯状
態、即ち点灯状態のＬＥＤ ＳＬＰ４（テーブル４（従
属局Ｓ３）に対応）、消灯状態の各ＬＥＤ ＳＬＰ３
（テーブル３（従属局Ｓ２）に対応）、ＳＬＰ２（テー
ブル２（従属局Ｓ１）に対応）、ＳＬＰ１（テーブル１
（制御局Ｍ１）に対応）を見て、オペレータは、伝送装
置（従属局）Ｓ３と伝送装置（従属局）Ｓ４との間の副
伝送路ＳＬ１に異常が発生したと認識し、当該副伝送路
ＳＬ１の交換等の復旧作業を行う。The LED SLP4 in the ON / OFF state of the transmission path state LED, that is, the ON state of the LED (corresponding to the table 4 (dependent station S3)), and the LED SLP3 in the OFF state
(Corresponding to table 3 (dependent station S2)), SLP2 (corresponding to table 2 (dependent station S1)), SLP1 (table 1
(Corresponding to the control station M1), the operator recognizes that an abnormality has occurred in the sub-transmission line SL1 between the transmission apparatus (dependent station) S3 and the transmission apparatus (dependent station) S4, and Recovery work such as replacement of the road SL1 is performed.

【００３５】ところが実際には、伝送装置（従属局）Ｓ
１と伝送装置（従属局）Ｓ２との間の副伝送路ＳＬ１に
も異常Ｘ２が発生しているにも拘らず、前述のように、
伝送路状態ＬＥＤ ＳＬＰ２は消灯しているので、オペ
レータは前記異常Ｘ２を認識できてない状況で伝送シス
テムを再稼働することとなる。再稼働の結果、前述と同
様にして、今度はテーブル２（従属局Ｓ１）に対応した
伝送路状態ＬＥＤ ＳＬＰ２が点灯するので、伝送装置
（従属局）Ｓ１と伝送装置（従属局）Ｓ２との間の副伝
送路の異常をオペレータが認識し再度当該副伝送路の復
旧作業を行うこととなる。However, actually, the transmission device (dependent station) S
As described above, despite the fact that the abnormality X2 has also occurred in the sub-transmission line SL1 between the transmission device 1 and the transmission device (dependent station) S2,
Since the transmission path status LED SLP2 is turned off, the operator restarts the transmission system in a state where the operator cannot recognize the abnormality X2. As a result of the restart, the transmission path status LED SLP2 corresponding to the table 2 (dependent station S1) is turned on in the same manner as described above, so that the transmission device (dependent station) S1 and the transmission device (dependent station) S2 The operator recognizes the abnormality of the sub-transmission line between them and performs the restoration work of the sub-transmission line again.

【００３６】このように、一カ所の伝送路異常は、伝送
路状態ＬＥＤによって認識できるけれども、２ケ所以上
の伝送路異常は、上流側の伝送路異常を復旧した後に再
稼働しなければ下流側の伝送路異常は検出できないとい
う問題が生じていた。又、仮に、プログラムを修正し
て、図１６のＬＥＤ点消灯フローを変更し、伝送路異常
が発生したときには、全ての伝送路状態テーブルを読み
込むようにすること、即ちテーブル４のみでなく、テー
ブル３、テーブル２、テーブル１、テーブル５も必ず読
み込むようにすることも考えられるが、前述の図１６の
ように、副伝送路ＳＬ１の異常点Ｘ１より同期信号伝送
方向下流側の伝送装置Ｓ３（従属局），Ｓ２（従属
局），Ｓ１（従属局），Ｍ１（制御局）には全て同期信
号が流れてなく、図１５の伝送路状態テーブル３、同テ
ーブル２、同テーブル１、同テーブル５は全て異常状態
となり、各テーブルに対応するＬＥＤ ＳＬＰ４，ＳＬ
Ｐ３，ＳＬＰ２，ＳＬＰ１は全て点灯状態となるので、
異常点Ｘ１，Ｘ２以外の健全な副伝送路までチェックし
てしまうことになる。As described above, one transmission line abnormality can be recognized by the transmission line status LED. However, if two or more transmission line abnormalities are recovered, the downstream transmission line abnormality must be restored after the upstream transmission line abnormality is restored. However, there has been a problem that the transmission path abnormality cannot be detected. Also, if the program is modified to change the flow of turning the LED on and off in FIG. 16 and a transmission path abnormality occurs, all the transmission path state tables are read. Although it is conceivable to always read table 3, table 2, table 1, and table 5 as well, as shown in FIG. 16 described above, the transmission device S3 (on the downstream side in the synchronization signal transmission direction from the abnormal point X1 of the sub-transmission line SL1) No synchronizing signal flows through any of the dependent stations, S2 (dependent station), S1 (dependent station), and M1 (control station), and the transmission path state table 3, table 2, table 1, and table 1 in FIG. 5 are all in an abnormal state, and the LEDs SLP4 and SL corresponding to each table
Since P3, SLP2 and SLP1 are all turned on,
It is necessary to check even a healthy sub-transmission line other than the abnormal points X1 and X2.

【００３７】[0037]

【発明が解決しようとする課題】主伝送路、副伝送路を
有する伝送システムのような複伝送路方式の伝送システ
ムにおける従来の同期信号伝送方式においては前述のよ
うに、各従属局Ｓ１，Ｓ２，Ｓ３，Ｓ４の何れも、自局
内では副伝送路入力を副伝送路出力に直接接続し各局間
では上流側従属局の副伝送路出力を下流側従属局の副伝
送路入力に直接接続しているので、副伝送路における１
カ所の伝送路異常は検出できるが、２カ所以上の伝送路
異常は上流の異常のみしか検出できないという問題点が
あった。この発明は、前述のような問題点を解決するた
めになされたもので、複数箇所の伝送路異常を検出可能
とすることを目的とする。In a conventional synchronous signal transmission system in a transmission system of a multiple transmission line system such as a transmission system having a main transmission line and a sub transmission line, as described above, each of the slave stations S1, S2 , S3 and S4, the sub-transmission line input is directly connected to the sub-transmission line output in the own station, and the sub-transmission line output of the upstream subordinate station is directly connected to the sub-transmission line input of the downstream subordinate station between the respective stations. So that 1 in the sub-transmission path
Although transmission line abnormalities at two locations can be detected, transmission line abnormalities at two or more locations can only be detected at upstream. SUMMARY OF THE INVENTION The present invention has been made to solve the above-described problems, and an object of the present invention is to make it possible to detect a plurality of transmission path abnormalities.

【００３８】[0038]

【課題を解決するための手段】この発明による伝送系統
装置は、主伝送路および副伝送路によって互いに接続さ
れた３個以上の複数個の伝送装置を備え、前記各伝送装
置は前記主伝送路の入力側と出力側および前記副伝送路
の入力側と出力側にそれぞれ設けられた伝送路切り替え
手段と、前記副伝送路の入力側に設けられた副伝送路異
常検出器とを有し、前記主伝送路と各伝送装置を経由し
て情報伝送を行なっている状態において、相隣接する２
つの前記各伝送装置間のそれぞれに、前記相隣接する一
方の伝送装置の副伝送路の出力側の伝送路切り替え手段
から、その他方の伝送装置の副伝送路の入力側の前記副
伝送路異常検出器と伝送路切り替え手段を経てその副伝
送路の出力側の伝送路切り替え手段に至る単位副伝送路
を形成し、このそれぞれの単位副伝送路が互いに接続さ
れずに分断されているものである。SUMMARY OF THE INVENTION The transmission system apparatus according to the invention comprises three or more of a plurality of transmission devices connected to each other by a main transmission line and the sub-transmission lines, each transmission instrumentation
The input and output sides of the main transmission path and the sub transmission path
Transmission line switching provided on the input side and output side of the
Means and a sub-transmission line different from that provided on the input side of the sub-transmission line.
Having a normal detector and passing through the main transmission line and each transmission device.
In the state where information is transmitted by
Between each of the two transmission devices,
Transmission line switching means on the output side of the sub transmission line of one of the transmission devices
From the input side of the sub-transmission line of the other transmission device.
A transmission line abnormality detector and its sub-transmission
Unit sub-transmission line to transmission line switching means on the output side of the transmission line
And these unit sub-transmission lines are connected to each other.
It is divided without being divided .

【００３９】また、この発明による伝送系統装置は、前
記各伝送装置は通信制御用ＩＣを有し、前記各単位副伝
送路はこの通信制御用ＩＣを介して前記主伝送路から同
期信号の供給を受け、その有無に応じて前記単位副伝送
路の異常の有無を検出するものである。[0039] The transmission system apparatus according to the present invention, prior to
Each transmission device has a communication control IC, and each unit sub-transmission
The transmission path is routed from the main transmission path via this communication control IC.
And the unit sub-transmission according to the presence or absence of the
It detects the presence or absence of a road abnormality .

【００４０】[0040]

【作用】この発明の伝送系統装置によれば、主伝送路と
各伝送装置を経由して情報伝送を行なっている状態にお
いて、相隣接する２つの各伝送装置間のそれぞれに、前
記相隣接する一方の伝送装置の副伝送路の出力側の伝送
路切り替え手段から、その他方の伝送装置の副伝送路の
入力側の副伝送路異常検出器と伝送路切り替え手段とを
経て、その伝送装置の副伝送路の出力側の伝送路切り替
え手段に至る単位副伝送路が、互いに接続されずに分断
して形成されるため、この分断された各単位副伝送路毎
にその異常を検出することができる。SUMMARY OF According to the transmission system equipment of the present invention, the main transmission path
In the state where information is transmitted via each transmission device
Between each two adjacent transmission devices,
Transmission on the output side of the sub transmission line of one adjacent transmission device
From the path switching means, the sub transmission path of the other transmission apparatus is
The sub-transmission line abnormality detector on the input side and the transmission line switching means
The transmission line switching on the output side of the sub transmission line of the transmission device
Unit sub-transmission lines leading to control means are disconnected without being connected to each other
Each of the divided unit sub-transmission lines.
It is possible to detect the abnormality in.

【００４１】[0041]

【実施例】実施例１．本発明が適用される伝送装置のＨ
／Ｗ構成の概略図は前述の図１１に示した通りであり、
その構成、動作は前述の通りであるので説明は省略す
る。[Embodiment 1] H of the transmission device to which the present invention is applied
The schematic diagram of the / W configuration is as shown in FIG.
Since the configuration and operation are as described above, the description is omitted.

【００４２】図１は、２台の伝送装置（従属局Ｓ２，従
属局Ｓ３）の接続例を示し、前述の図１１に示されてい
るＣＰＵ１、プログラム部２、データ部３、共通バス５
の図示は省略してある。図１において、ＳＷ１１は従属
局Ｓ２における主伝送路ＭＬ１の入力を選択する伝送路
切り替え手段で、接点ＭＲ１０，ＭＲ１１，ＭＲ１２を
有したスイッチである。ＳＷ１２は従属局Ｓ２における
主伝送路ＭＬ１の出力を選択する伝送路切り替え手段
で、接点ＭＳ１０，ＭＳ１１，ＭＳ１２を有したスイッ
チである。ＳＷ１３は従属局Ｓ２における副伝送路ＳＬ
１の出力を選択する伝送路切り替え手段で、接点ＳＳ１
０，ＳＳ１１，ＳＳ１２を有したスイッチである。ＳＷ
１４は従属局Ｓ２における副伝送路ＳＬ１の入力を選択
する伝送路切り替え手段で、接点ＳＲ１０，ＳＲ１１，
ＳＲ１２を有したスイッチである。ＭＬ１１Ｉは主伝送
路ＭＬ１の入力、ＭＬ１１Ｏは主伝送路ＭＬ１の出力、
ＳＬ１１Ｉは副伝送路ＳＬ１の入力、ＳＬ１１Ｏは副伝
送路ＳＬ１の出力である。FIG. 1 shows an example of connection between two transmission apparatuses (dependent station S2 and dependent station S3), and includes the CPU 1, the program section 2, the data section 3, and the common bus 5 shown in FIG.
Are not shown. In FIG. 1, SW11 is transmission line switching means for selecting an input of the main transmission line ML1 in the subordinate station S2, and is a switch having contacts MR10, MR11 and MR12. SW12 is transmission line switching means for selecting the output of the main transmission line ML1 in the subordinate station S2, and is a switch having contacts MS10, MS11 and MS12. SW13 is a sub-transmission line SL in the subordinate station S2.
The transmission line switching means for selecting the output of the contact 1
0, SS11, and SS12. SW
Reference numeral 14 denotes transmission line switching means for selecting an input of the sub transmission line SL1 in the dependent station S2.
This is a switch having the SR12. ML11I is an input of the main transmission line ML1, ML110 is an output of the main transmission line ML1,
SL11I is an input of the sub-transmission line SL1, and SL110 is an output of the sub-transmission line SL1.

【００４３】ＭＤ１は従属局Ｓ２おいて伝送路切り替え
手段（スイッチ）ＳＷ１１より信号伝送方向上流側の主
伝送路ＭＬ１に接続された主伝送路異常検出器で、従属
局Ｓ２の主伝送路ＭＬ１に伝送されている同期信号の有
無を検出することにより従属局Ｓ２の上流側で主伝送路
ＭＬ１に異常があるか否かを検出するものである。ＳＤ
１は従属局Ｓ２において伝送路切り替え手段（スイッ
チ）ＳＷ１４より信号伝送方向上流側の副伝送路ＳＬ１
に接続された副伝送路異常検出器で、従属局Ｓ２の副伝
送路ＳＬ１に伝送されている同期信号の有無を検出する
ことにより従属局Ｓ２の上流側で副伝送路ＳＬ１に異常
があるか否かを検出するものである。MD1 is a main transmission path abnormality detector connected to the main transmission path ML1 on the upstream side in the signal transmission direction from the transmission path switching means (switch) SW11 in the subordinate station S2, and is connected to the main transmission path ML1 of the subordinate station S2. By detecting the presence or absence of the transmitted synchronization signal, it is detected whether or not there is an abnormality in the main transmission line ML1 on the upstream side of the dependent station S2. SD
Reference numeral 1 denotes a sub-transmission line SL1 upstream of the transmission-line switching means (switch) SW14 in the signal transmission direction in the dependent station S2.
The sub-transmission line abnormality detector connected to the sub-station S2 detects the presence or absence of a synchronization signal transmitted to the sub-transmission line SL1 of the subordinate station S2, and detects whether there is an abnormality in the sub-transmission line SL1 upstream of the subordinate station S2. It is to detect whether or not.

【００４４】ＳＷ２１は従属局Ｓ３における主伝送路Ｍ
Ｌ１の入力を選択する伝送路切り替え手段で、接点ＭＲ
２０，ＭＲ２１，ＭＲ２２を有したスイッチである。Ｓ
Ｗ２２は従属局Ｓ３における主伝送路ＭＬ１の出力を選
択する伝送路切り替え手段で、接点ＭＳ２０，ＭＳ２
１，ＭＳ２２を有したスイッチである。ＳＷ２３は従属
局Ｓ３における副伝送路ＳＬ１の出力を選択する伝送路
切り替え手段で、接点ＳＳ２０，ＳＳ２１，ＳＳ２２を
有したスイッチである。ＳＷ２４は従属局Ｓ３における
副伝送路ＳＬ１の入力を選択する伝送路切り替え手段
で、接点ＳＲ２０，ＳＲ２１，ＳＲ２２を有したスイッ
チである。ＭＬ１２Ｉは主伝送路ＭＬ１の入力、ＭＬ１
２Ｏは主伝送路ＭＬ１の出力、ＳＬ１２Ｉは副伝送路Ｓ
Ｌ１の入力、ＳＬ１２Ｏは副伝送路ＳＬ１の出力であ
る。SW21 is the main transmission line M in the subordinate station S3.
The transmission path switching means for selecting the input of L1
20, a switch having MR21 and MR22. S
W22 is a transmission line switching means for selecting the output of the main transmission line ML1 in the dependent station S3.
1, a switch having MS22. SW23 is a transmission line switching means for selecting the output of the sub transmission line SL1 in the dependent station S3, and is a switch having contacts SS20, SS21 and SS22. SW24 is transmission line switching means for selecting an input of the sub transmission line SL1 in the subordinate station S3, and is a switch having contacts SR20, SR21 and SR22. ML12I is an input of the main transmission line ML1, ML1
2O is the output of the main transmission line ML1, SL12I is the sub transmission line S
The input of L1, SL12O is the output of the sub-transmission line SL1.

【００４５】ＭＤ２は従属局Ｓ３において伝送路切り替
え手段（スイッチ）ＳＷ２１より信号伝送方向上流側の
主伝送路ＭＬ１に接続された主伝送路異常検出器で、前
記従属局Ｓ２から従属局Ｓ３へ主伝送路ＭＬ１を介して
伝送されている同期信号の有無を検出することにより従
属局Ｓ３の上流側で主伝送路ＭＬ１に異常があるか否か
を検出するものである。ＳＤ２は従属局Ｓ３において伝
送路切り替え手段（スイッチ）ＳＷ１４より信号伝送方
向上流側の副伝送路ＳＬ１に接続された副伝送路異常検
出器で、従属局Ｓ３の副伝送路ＳＬ１に伝送されている
同期信号の有無を検出することにより従属局Ｓ３の上流
側で副伝送路ＳＬ１に異常があるか否かを検出するもの
である。Ｘ１は副伝送路ＳＬ１の異常発生点を示す。４
は通信制御用ＩＣで、データの送受信を行う場合に予め
伝送路に或る一定の信号すなわち同期信号を送出してお
きデータの送受信のタイミングをとる制御をするもので
ある。MD2 is a main transmission line abnormality detector connected to the main transmission line ML1 on the signal transmission direction upstream side of the transmission line switching means (switch) SW21 in the subordinate station S3. By detecting the presence or absence of a synchronization signal transmitted via the transmission line ML1, it is detected whether or not the main transmission line ML1 has an abnormality on the upstream side of the dependent station S3. SD2 is a sub-transmission line abnormality detector connected to the sub-transmission line SL1 on the upstream side in the signal transmission direction from the transmission line switching means (switch) SW14 in the subordinate station S3, and is transmitted to the sub-transmission line SL1 of the subordinate station S3. By detecting the presence or absence of the synchronization signal, it is detected whether or not the sub-transmission line SL1 has an abnormality on the upstream side of the dependent station S3. X1 indicates an abnormality occurrence point of the sub-transmission line SL1. 4
Is a communication control IC for transmitting a certain signal, that is, a synchronizing signal, to a transmission path in advance when data is transmitted and received, and controls the timing of data transmission and reception.

【００４６】図２、図３は何れもこの発明を適用した伝
送システム構成の一例を示す図で、図２は副伝送路ＳＬ
１に異常が発生してない状態を示し、図３は副伝送路Ｓ
Ｌ１に異常Ｘ１，Ｘ２が発生している状態を示してい
る。図２、図３において、Ｍ１はデータリンクの制御や
誤りの制御・回復などに責任を持つ所謂伝送制御の中心
となる制御局（伝送装置）、Ｓ１，Ｓ２，Ｓ３，Ｓ４は
制御局ＭＬ１の指示によってデータリンクの制御機能を
実行する従属局（伝送装置）、ＭＬ１は常用系のループ
状の主伝送路、ＳＬ１は待機系のループ状の副伝送路で
ある。前記制御局Ｍ１、前記従属局Ｓ１，Ｓ２，Ｓ３，
Ｓ４は図示のように前記常用系の主伝送路ＭＬ１と待機
系の副伝送路ＳＬ１の２系統の伝送路で接続されてい
る。また、従属局Ｓ１，Ｓ２，Ｓ３，Ｓ４は、前述の図
１における従属局（伝送装置）Ｓ２，Ｓ３と同じシステ
ム構成である。FIGS. 2 and 3 each show an example of the configuration of a transmission system to which the present invention is applied.
1 shows a state in which no abnormality has occurred, and FIG.
This shows a state in which abnormalities X1 and X2 have occurred in L1. In FIG. 2 and FIG. 3, M1 is a control station (transmission apparatus) that is the center of so-called transmission control responsible for data link control and error control / recovery, and S1, S2, S3, and S4 are control stations ML1. A subordinate station (transmission device) that performs a data link control function according to an instruction, ML1 is a main loop transmission line of a normal system, and SL1 is a sub transmission line of a standby loop. The control station M1, the dependent stations S1, S2, S3,
S4 is connected by two transmission lines, the main transmission line ML1 of the service system and the sub transmission line SL1 of the standby system as shown in the figure. The dependent stations S1, S2, S3, and S4 have the same system configuration as the dependent stations (transmission devices) S2 and S3 in FIG.

【００４７】従来と異なる点は、従来のシステムが前述
の図９、図１０、図１３に示すように副伝送路ＳＬ１が
主伝送路ＭＬ１から独立して、同期信号伝送方向最上流
の従属局（伝送装置）Ｓ４に送信された同期信号が副伝
送路ＳＬ１のみを経て同期信号伝送方向最下流の従属局
（伝送装置）Ｓ１まで伝送するように構成されているの
に対し、図２の伝送システムでは、図示のように各従属
局（伝送装置）Ｓ４，Ｓ３，Ｓ２，Ｓ１間で独立してい
る点、即ち、同期信号伝送方向最上流の従属局（伝送装
置）Ｓ４に同期信号伝送方向直下流側の従属局（伝送装
置）Ｓ３から主伝送路ＭＬ１を経て伝送された同期信号
を、副伝送路ＳＬ１を経て前記同期信号伝送方向直下流
側の従属局（伝送装置）Ｓ３へ伝送し、次段の従属局
（伝送装置）Ｓ２へは伝送しない構成とされている。The difference from the conventional system is that the conventional system is such that the sub-transmission line SL1 is independent of the main transmission line ML1 as shown in FIGS. (Transmission device) While the synchronization signal transmitted to S4 is configured to be transmitted only to the subordinate station (transmission device) S1 at the most downstream in the synchronization signal transmission direction via only the sub-transmission line SL1, the transmission signal shown in FIG. In the system, as shown in the drawing, the dependent stations (transmission devices) S4, S3, S2, and S1 are independent, that is, the slave station (transmission device) S4, which is the most upstream in the synchronization signal transmission direction, has a synchronization signal transmission direction. The synchronization signal transmitted from the slave station (transmission device) S3 on the immediately downstream side via the main transmission line ML1 is transmitted to the slave station (transmission device) S3 immediately downstream on the synchronization signal transmission direction via the auxiliary transmission line SL1. To the next dependent station (transmission device) S2 It has a configuration which is not transmitted.

【００４８】同様に、上流側の従属局（伝送装置）Ｓ３
に同期信号伝送方向直下流側の従属局（伝送装置）Ｓ２
から主伝送路ＭＬ１を経て伝送された同期信号を、副伝
送路ＳＬ１を経て前記同期信号伝送方向直下流側の従属
局（伝送装置）Ｓ２へと伝送し、次段の従属局（伝送装
置）Ｓ１へは伝送しない構成とされている。また同様
に、上流側の従属局（伝送装置）Ｓ２に同期信号伝送方
向直下流側の従属局（伝送装置）Ｓ１から主伝送路ＭＬ
１を経て伝送された同期信号を、副伝送路ＳＬ１を経て
前記同期信号伝送方向直下流側の従属局（伝送装置）Ｓ
１へ伝送し、次段の制御局（伝送装置）Ｍ１へは伝送し
ない構成されている。Similarly, the upstream dependent station (transmission apparatus) S3
Dependent station (transmission device) S2 immediately downstream of the synchronization signal transmission direction
And transmits the synchronization signal transmitted through the main transmission line ML1 to the slave station (transmission device) S2 immediately downstream in the synchronization signal transmission direction through the sub transmission line SL1. It is configured not to transmit to S1. Similarly, the slave station (transmission apparatus) S2 on the upstream side is sent from the slave station (transmission apparatus) S1 on the downstream side in the synchronization signal transmission direction to the main transmission path ML.
1 is transmitted to the slave station (transmission device) S immediately downstream of the synchronization signal transmission direction via the sub-transmission line SL1.
1 and not to the next control station (transmission device) M1.

【００４９】前述の図１、図２、図３で示される従属局
（伝送装置）Ｓ１〜Ｓ４から、前述の図１、図２、図１
２で示される制御局（伝送装置）Ｍ１へ送る伝送路情報
データフレームは前述の図１４の例と同じでよく、従属
局（伝送装置）Ｓ１〜Ｓ４（図１、図２、図３）が認識
している伝送路異常状態を入れた伝送路情報部Ｉ、伝送
路情報データフレームであることを示す情報を入れた制
御部ＩＭ、送信元を示す自局ＮＯ．情報を入れる部分で
ある局ＮＯ．部、及びフレームの先頭と末尾を示す情報
部分であるフラグ部で構成される。From the dependent stations (transmission devices) S1 to S4 shown in FIGS. 1, 2 and 3 described above,
The transmission path information data frame to be transmitted to the control station (transmission apparatus) M1 indicated by 2 may be the same as the example of FIG. 14 described above, and the dependent stations (transmission apparatuses) S1 to S4 (FIGS. 1, 2, and 3) The transmission path information section I containing the recognized transmission path abnormal state, the control section IM containing information indicating that the frame is a transmission path information data frame, and the own station NO. Station NO. And a flag portion, which is an information portion indicating the beginning and end of the frame.

【００５０】図４は、後述の図５で示した伝送路状態テ
ーブルを基に、オペレータに伝送路状態を伝えるため伝
送路状態表示用ＬＥＤ ＳＬＰ１，ＳＬＰ２，ＳＬＰ
３，ＳＬＰ４，ＳＬＰ５を、プログラム部３（図１１）
のプログラムによって点消灯させる処理の概略を示すフ
ローチャートである。FIG. 4 shows transmission line state display LEDs SLP1, SLP2 and SLP for transmitting the transmission line state to the operator based on the transmission line state table shown in FIG.
3, SLP4, and SLP5 in the program section 3 (FIG. 11)
Is a flowchart showing an outline of a process of turning on / off the light by the program of FIG.

【００５１】図５は、前述の図１４で示した伝送路情報
データフレームを用いて各従属局（伝送装置）Ｓ４，Ｓ
３，Ｓ２，Ｓ１から送られてきた伝送路情報Ｉを前記制
御局Ｍ１のデータ部３（前述の図１１）に格納する伝送
路状態テーブルと、各従属局（伝送装置）Ｓ４，Ｓ３，
Ｓ２，Ｓ１から送られてきた各伝送路情報と対応ＬＥＤ
の点灯状態との関係を示す図である。FIG. 5 is a diagram showing each subordinate station (transmission apparatus) S4, S4 using the transmission path information data frame shown in FIG.
3, a transmission path state table for storing the transmission path information I sent from the S1 in the data section 3 (FIG. 11 described above) of the control station M1, and each dependent station (transmission apparatus) S4, S3,
Transmission line information sent from S2 and S1 and corresponding LED
It is a figure which shows the relationship with a lighting state.

【００５２】次に実施例１の動作を図１、図２、図３、
図４、図５、図１４によって説明する。まず、従属局
（伝送装置）Ｓ４，Ｓ３，Ｓ２，Ｓ１の詳細システム構
成を代表的に従属局（伝送装置）Ｓ３，Ｓ２の場合につ
いて示す図１により従属局の基本動作を説明する。Next, the operation of the first embodiment will be described with reference to FIGS.
This will be described with reference to FIGS. First, the basic operation of the dependent stations will be described with reference to FIG. 1 which shows a detailed system configuration of the dependent stations (transmission apparatuses) S4, S3, S2, and S1 in a typical case of the dependent stations (transmission apparatuses) S3 and S2.

【００５３】従属局Ｓ３においては、主伝送路ＭＬ１系
では、伝送路切り替え手段（スイッチ）ＳＷ２１の接点
ＭＲ２０と接点ＭＲ２２とを接続してあると共に、伝送
路切り替え手段（スイッチ）ＳＷ２２の接点ＭＳ２０と
接点ＭＳ２２とを接続してあり、伝送路切り替え手段
（スイッチ）ＳＷ２１の接点ＭＲ２１と接点ＭＳ２１と
は主伝送路ＭＬ１には接続していない。副伝送路系ＳＬ
１では、伝送路切り替え手段（スイッチ）ＳＷ２３の接
点ＳＳ２０と接点ＳＳ２２とを接続してあると共に、伝
送路切り替え手段（スイッチ）ＳＷ２４の接点ＳＲ２０
と接点ＳＲ２１とを接続してあり、伝送路切り替え手段
（スイッチ）ＳＷ２３の接点ＳＳ２１と接点ＳＲ２２と
は副伝送路ＳＬ１には接続していない。In the subordinate station S3, in the main transmission path ML1, the contact MR20 of the transmission path switching means (switch) SW21 and the contact MR22 are connected, and the contact MS20 of the transmission path switching means (switch) SW22 is connected to the contact MS20. The contact MS22 is connected, and the contact MR21 and the contact MS21 of the transmission path switching means (switch) SW21 are not connected to the main transmission path ML1. Sub transmission line system SL
1, the contact SS20 and the contact SS22 of the transmission path switching means (switch) SW23 are connected, and the contact SR20 of the transmission path switching means (switch) SW24 is connected.
And the contact SR21, and the contact SS21 and the contact SR22 of the transmission path switching means (switch) SW23 are not connected to the sub transmission path SL1.

【００５４】前述のように従属局（伝送装置）Ｓ３で
は、伝送路切り替え手段（スイッチ）ＳＷ２３の接点Ｓ
Ｓ２０とＳＳ２１とは接続せずに接点ＳＳ２０とＳＳ２
２とを接続してあるので、副伝送路出力ＳＬ１２０に
は、主伝送路からの同期信号が通信制御用ＩＣ４の出力
を経由して出力される。従属局Ｓ３の伝送路切り替え手
段（スイッチ）ＳＷ２４の接点ＳＲ２０への副伝送路入
力は伝送路切り替え手段ＳＷ２３の接点ＳＳ２１に至る
が、ここで分断されそれ以降へは伝送されない。従属局
Ｓ３の伝送路切り替え手段ＳＷ２３から副伝送路ＳＬ
１、従属局Ｓ２の伝送路切り替え手段ＳＷ１４の接点Ｓ
Ｒ１０、接点ＳＲ１１を経て、伝送路切り替え手段ＳＷ
１３の伝送路切り替え手段ＳＷ１３の接点ＳＳ２１に至
る伝送路は、単位副伝送路である。従属局（伝送装置）
Ｓ２も前述の従属局（伝送装置）Ｓ３の場合と同様に、
副伝送路出力には、主伝送路入力を通信制御用ＩＣを経
由して出力し、副伝送路入力はその副伝送路出力に出力
してない。図２、図３では、主伝送路ＭＬ１と制御局
（伝送装置）Ｍ１、従属局（伝送装置）Ｓ１、Ｓ２、Ｓ
３、Ｓ４を経て情報伝送が行なわれるが、この状態にお
いて、前記単位副伝送路が相隣接する各伝送装置のそれ
ぞれの間に、都合５つ形成され、これらは互いに接続さ
れず分断された状態にある。 As described above, in the dependent station (transmission apparatus) S3, the contact S of the transmission path switching means (switch) SW23
S20 and SS21 are not connected and contacts SS20 and SS2
Since a 2 is connected to the sub transmission path output SL120, synchronizing signals from the main transmission path is Outputs via output <br/> communication control IC 4. Sub-transmission line input to contact SR20 of transmission line switching means (switch) SW24 of subordinate station S3
The force reaches the contact SS21 of the transmission path switching means SW23, but is divided here and is not transmitted thereafter. Subordinate station
From the transmission path switching means SW23 of S3 to the sub transmission path SL
1. Contact point S of transmission path switching means SW14 of slave station S2
R10, via the contact SR11, the transmission path switching means SW
13 to the contact SS21 of the transmission path switching means SW13.
The transmission path is a unit sub-transmission path. Dependent station (transmission equipment)
S2 is also the same as the above-described slave station (transmission device) S3,
The main transmission path input is output to the sub transmission path output via the communication control IC, and the sub transmission path input is not output to the sub transmission path output. 2 and 3, the main transmission line ML1 and the control station
(Transmission device) M1, slave station (transmission device) S1, S2, S
3. Information transmission is performed via S4.
Wherein the unit sub-transmission line is that of each adjacent transmission device.
In each case, five are conveniently formed, which are connected to each other.
It is in a state of being divided without being divided.

【００５５】前述の図１に示す伝送路接続状態におい
て、副伝送路ＳＬ１の健全状態、即ち断線等の異常が発
生していない状態における従属局（伝送装置）Ｓ２へ
の、従属局（伝送装置）Ｓ３からの副伝送路同期信号
は、従属局（伝送装置）Ｓ３における主伝送路入力ＭＬ
１２Ｉ→伝送路切り替え手段（スイッチ）ＳＷ２１の接
点ＭＲ２０，ＭＲ２２→通信制御用ＩＣ４→伝送路切り
替え手段（スイッチ）ＳＷ２３の接点ＳＳ２２，ＳＳ２
０→従属局（伝送装置）Ｓ２の伝送路切り替え手段（ス
イッチ）ＳＷ１４の接点ＳＲ１０，ＳＲ１１の経路で伝
送路切り替え手段（スイッチ）ＳＷ１３の接点ＳＳ１１
に至る。接点ＳＳ１１に至った同期信号は、接点ＳＳ１
１と接点ＳＳ１０とを接続していないので、次段の従属
局（伝送装置）Ｓ１（図１には図示せず）へは伝送され
ない。In the transmission line connection state shown in FIG. 1, the subordinate transmission line SL1 is transmitted to the subordinate station (transmission device) S2 in a sound state, that is, in a state where no abnormality such as disconnection has occurred. ) The sub-transmission line synchronization signal from S3 is transmitted to the main transmission line input ML in the subordinate station (transmission device) S3.
12I → contacts MR20 and MR22 of transmission path switching means (switch) SW21 → communication control IC 4 → contacts SS22 and SS2 of transmission path switching means (switch) SW23
0 → contact SS11 of the transmission path switching means (switch) SW13 on the path of the contacts SR10 and SR11 of the transmission path switching means (switch) SW14 of the dependent station (transmission apparatus) S2.
Leads to. The synchronization signal that has reached the contact SS11 is the contact SS1.
1 and the contact SS10 are not connected, so that the signal is not transmitted to the subordinate station (transmission device) S1 (not shown in FIG. 1) at the next stage.

【００５６】従属局（伝送装置）Ｓ３の副伝送路出力Ｓ
Ｌ１２Ｏからの同期信号の、従属局（伝送装置）Ｓ２の
副伝送路入力ＳＬ１１Ｉによる受信、即ち、従属局（伝
送装置）Ｓ３と従属局（伝送装置）Ｓ２との間の副伝送
路ＳＬ１が健全であることは，従属局（伝送装置）Ｓ２
の副伝送路異常検出器ＳＤ１が副伝送路ＳＬ１に伝送さ
れている同期信号を検出することで検出される。The sub-transmission line output S of the dependent station (transmission device) S3
Receiving the synchronization signal from L12O by the sub-transmission line input SL11I of the dependent station (transmission device) S2, that is, the sub-transmission line SL1 between the dependent station (transmission device) S3 and the dependent station (transmission device) S2 is sound. Means that the dependent station (transmission device) S2
The sub-transmission line abnormality detector SD1 detects the synchronization signal transmitted to the sub-transmission line SL1.

【００５７】従属局（伝送装置）Ｓ２における主伝送路
入力ＭＬ１１Ｉに入力された同期信号は、主伝送路入力
ＭＬ１１Ｉ→伝送路切り替え手段（スイッチ）ＳＷ１１
の接点ＭＲ１０，ＭＲ１２→通信制御用ＩＣ４→伝送路
切り替え手段（スイッチ）ＳＷ１３の接点ＳＳ１２，Ｓ
Ｓ１０→副伝送路ＳＬ１の同期信号伝送方向下流側の従
属局（伝送装置）Ｓ１（図１には図示せず）の副伝送路
入力、の経路で伝送される。The synchronization signal input to the main transmission line input ML11I in the slave station (transmission device) S2 is converted from the main transmission line input ML11I to the transmission line switching means (switch) SW11.
Contacts MR10, MR12 → communication control IC 4 → contacts SS12, S of transmission path switching means (switch) SW13
The signal is transmitted through a path from S10 to a substation input (not shown in FIG. 1) of a slave station (transmission apparatus) S1 (not shown in FIG. 1) on the downstream side of the subtransmission path SL1 in the synchronization signal transmission direction.

【００５８】次に、副伝送路ＳＬ１が正常でなくなった
場合、例えば前述の図１の伝送路接続状態において従属
局（伝送装置）Ｓ３の入力側の副伝送路ＳＬ１に副伝送
路切断等の異常Ｘ１が発生した場合について説明する。Next, when the sub-transmission line SL1 becomes abnormal, the sub-transmission line SL1 on the input side of the subordinate station (transmission apparatus) S3 is disconnected in the transmission line connection state of FIG. The case where the abnormality X1 occurs will be described.

【００５９】従属局（伝送装置）Ｓ３の入力側の副伝送
路ＳＬ１に副伝送路切断等の異常Ｘ１が発生した場合、
従属局（伝送装置）Ｓ３では、副伝送路入力ＳＬ１２Ｉ
には同期信号が来なくなる。従って、伝送路異常検出器
ＳＤ２が同期信号が来ないことで、異常を検出する。こ
の時、従属局（伝送装置）Ｓ３の副伝送路出力ＳＬ１２
Ｏについては、伝送路切り替え手段（スイッチ）ＳＷ２
３の接点ＳＳ２０、ＳＳ２２が接続されており主伝送路
出力ＭＬ１２Ｏからの出力と同じものを出力しているの
で、次段の従属局（伝送装置）Ｓ２の副伝送路入力ＳＬ
１１Ｉに対しては正常な同期信号を出力することが出来
る。従って、従属局（伝送装置）Ｓ２では、従属局（伝
送装置）Ｓ３より副伝送路ＳＬ１からみて伝送方向上流
に副伝送路の異常Ｘ１が発生しても、その異常Ｘ１に影
響を受けることなく、正常に副伝送路入力ＳＬ１１Ｉを
得ることができ、伝送路異常検出器ＳＤ１は正常な同期
信号を検出し、副伝送路同期信号伝送方向の直上流の従
属局（伝送装置）Ｓ３との間の副伝送路ＳＬ１が正常で
あることを検出できる。このように従属局（伝送装置）
Ｓ２，Ｓ３の双方を含む伝送システム全体から見て、正
確に副伝送路ＳＬ１の異常／正常を認識できることにな
る。When an abnormality X1 such as disconnection of the sub-transmission line occurs in the sub-transmission line SL1 on the input side of the dependent station (transmission device) S3,
In the slave station (transmission device) S3, the sub-transmission line input SL12I
No synchronization signal comes. Accordingly, the transmission path abnormality detector SD2 detects an abnormality by not receiving a synchronization signal. At this time, the sub-transmission line output SL12 of the dependent station (transmission device) S3
For O, transmission line switching means (switch) SW2
3 are connected to each other and output the same output from the main transmission line output ML120, so that the sub-transmission line input SL of the subordinate station (transmission device) S2 at the next stage is output.
A normal synchronization signal can be output to 11I. Therefore, in the dependent station (transmission device) S2, even if the abnormality X1 of the sub-transmission line occurs upstream of the sub-transmission line SL1 in the transmission direction from the dependent station (transmission device) S3, the abnormality is not affected by the abnormality X1. , The sub-transmission line input SL11I can be normally obtained, the transmission line abnormality detector SD1 detects a normal synchronization signal, and communicates with the dependent station (transmission device) S3 immediately upstream in the sub-transmission line synchronization signal transmission direction. Can be detected as normal. Dependent station (transmission device)
When viewed from the entire transmission system including both S2 and S3, the abnormality / normality of the sub-transmission line SL1 can be accurately recognized.

【００６０】以上のような図１に示した接続を複数台の
伝送装置に適用した場合の伝送路接続概要を示したのが
図２であり、この図２において、従属局（伝送装置）Ｓ
４では、主伝送路伝送方向上流側（副伝送路伝送方向下
流側）の従属局（伝送装置）Ｓ３から主伝送路ＭＬ１で
伝送され、制御局（伝送装置）に伝送する同期信号を、
副伝送路ＳＬ１で、副伝送路伝送方向下流側の従属局
（伝送装置）Ｓ３へ伝送する。従属局（伝送装置）Ｓ３
では、図示のように、副伝送路伝送方向上流側の従属局
（伝送装置）Ｓ４から伝送された同期信号は従属局（伝
送装置）Ｓ３どまりとし、主伝送路伝送方向上流側（副
伝送路伝送方向下流側）の従属局（伝送装置）Ｓ２から
主伝送路ＭＬ１で伝送され従属局（伝送装置）Ｓ４に伝
送する同期信号を、副伝送路ＳＬ１で、副伝送路伝送方
向下流側の従属局（伝送装置）Ｓ２へ伝送するのであ
る。FIG. 2 shows an outline of transmission line connection when the above-described connection shown in FIG. 1 is applied to a plurality of transmission apparatuses. In FIG. 2, the subordinate station (transmission apparatus) S
In 4, the synchronization signal transmitted from the slave station (transmission device) S3 on the upstream side in the main transmission line transmission direction (downstream side in the sub transmission line transmission direction) on the main transmission line ML1 and transmitted to the control station (transmission device) is
The signal is transmitted to the slave station (transmission device) S3 on the downstream side in the sub-transmission line transmission direction on the sub-transmission line SL1. Dependent station (transmission device) S3
As shown in the figure, the synchronization signal transmitted from the subordinate station (transmission device) S4 on the upstream side in the sub transmission line transmission direction is limited to the subordinate station (transmission device) S3, and the synchronization signal is transmitted upstream from the subordinate station (transmission device) S3. A synchronization signal transmitted from the slave station (transmission device) S2 (downstream in the transmission direction) from the slave station (transmission device) S2 and transmitted to the slave station (transmission device) S4 through the main transmission line ML1 is transmitted to the slave transmission line SL1 via the slave transmission line. The data is transmitted to the station (transmission device) S2.

【００６１】同様に、従属局（伝送装置）Ｓ２では、図
示のように、副伝送路伝送方向上流側の従属局（伝送装
置）Ｓ３から伝送された同期信号は従属局（伝送装置）
Ｓ２どまりとし、主伝送路伝送方向上流側（副伝送路伝
送方向下流側）の従属局（伝送装置）Ｓ１から主伝送路
ＭＬ１で伝送され、従属局（伝送装置）Ｓ３に伝送する
同期信号を、副伝送路ＳＬ１で、副伝送路伝送方向下流
側の従属局（伝送装置）Ｓ１へ伝送する。従属局（伝送
装置）Ｓ１でも同様に、図示のように、副伝送路伝送方
向上流側の従属局（伝送装置）Ｓ２から伝送された同期
信号は従属局（伝送装置）Ｓ１どまりとし、主伝送路伝
送方向上流側（副伝送路伝送方向下流側）の制御局（伝
送装置）Ｍ１から主伝送路ＭＬ１で伝送され、従属局
（伝送装置）Ｓ２に伝送する同期信号を、副伝送路ＳＬ
１で、副伝送路伝送方向下流側の制御局（伝送装置）Ｍ
１へ伝送する。図２にて副伝送路ＳＬ１をみると、各伝
送装置Ｓ４，Ｓ３，Ｓ２，Ｓ１，Ｍ１間で独立している
ことが判り、このことより１箇所の副伝送路異常が、他
の伝送装置間の副伝送路異常検出に影響を与えなくな
り、複数箇所の伝送路異常検出を可能にしていると言え
る。Similarly, in the slave station (transmission device) S2, as shown in the figure, the synchronization signal transmitted from the slave station (transmission device) S3 on the upstream side in the sub-transmission line transmission direction is transmitted to the slave station (transmission device).
The synchronization signal transmitted from the subordinate station (transmission device) S1 on the upstream side in the main transmission line transmission direction (downstream side in the sub transmission line transmission direction) through the main transmission line ML1 and transmitted to the subordinate station (transmission device) S3 Is transmitted to the subordinate station (transmission device) S1 on the downstream side in the sub-transmission line transmission direction on the sub-transmission line SL1. Similarly, at the slave station (transmission device) S1, as shown in the figure, the synchronization signal transmitted from the slave station (transmission device) S2 on the upstream side in the sub-transmission line transmission direction is limited to the slave station (transmission device) S1, and A synchronization signal transmitted from the control station (transmission device) M1 on the upstream side in the channel transmission direction (downstream side in the subtransmission line transmission direction) via the main transmission line ML1 and transmitted to the subordinate station (transmission device) S2 is transmitted to the subtransmission line SL.
1, the control station (transmission device) M on the downstream side in the sub-transmission line transmission direction
Transmit to 1. Looking at the sub-transmission line SL1 in FIG. 2, it can be seen that the transmission devices S4, S3, S2, S1, and M1 are independent from each other. It can be said that it does not affect the detection of abnormality in the sub-transmission line between the transmission lines, and enables the detection of abnormality in a plurality of transmission lines.

【００６２】次に、前述の図１に示した接続を複数台の
伝送装置に適用した場合の伝送路接続概要を示した図２
において副伝送路異常が２カ所Ｘ１，Ｘ２で発生した場
合を図示したのが図３であり、図３の様に従属局（伝送
装置）Ｓ４，Ｓ３間の副伝送路の異常Ｘ１及び従属局
（伝送装置）Ｓ２，Ｓ１間の副伝送路の異常Ｘ２が発生
した場合、従属局（伝送装置）Ｓ４は、制御局（伝送装
置）Ｍ１から同期信号を副伝送路ＳＬ１を介して受信し
検出できるので制御局（伝送装置）Ｍ１に対しては、図
１４に示す副伝送路正常の伝送路情報データフレーム
「０００００００００」を送信する。従属局（伝送装
置）Ｓ３は、副伝送路異常Ｘ１の為に、従属局（伝送装
置）Ｓ４からの副伝送路ＳＬ１系の同期信号が途絶えた
ことで、副伝送路ＳＬ１の異常を検出し、図１４に示す
副伝送路異常の伝送路情報データフレーム「０００００
０００１」を制御局（伝送装置）Ｍ１に対して送信す
る。Next, FIG. 2 shows an outline of transmission path connection when the connection shown in FIG. 1 is applied to a plurality of transmission apparatuses.
FIG. 3 shows a case where the sub-transmission line abnormality occurs at two places X1 and X2 in FIG. 3. As shown in FIG. 3, the sub-transmission line abnormality X1 between the subordinate stations (transmission devices) S4 and S3 and the subordinate station (Transmission device) When abnormality X2 of the sub-transmission line between S2 and S1 occurs, the dependent station (transmission device) S4 receives and detects a synchronization signal from the control station (transmission device) M1 via the sub-transmission line SL1. Since it is possible, the transmission line information data frame “000000000” with the normal sub-transmission line shown in FIG. 14 is transmitted to the control station (transmission device) M1. The dependent station (transmission device) S3 detects the abnormality of the sub-transmission line SL1 due to the interruption of the synchronization signal of the sub-transmission line SL1 system from the dependent station (transmission device) S4 due to the sub-transmission line abnormality X1. The transmission line information data frame “00000” of the sub transmission line abnormality shown in FIG.
0001 ”to the control station (transmission device) M1.

【００６３】従属局（伝送装置）Ｓ２は、従属局（伝送
装置）Ｓ３が主伝送路ＭＬ１系で受信した同期信号を従
属局（伝送装置）Ｓ３からの副伝送路ＳＬ１系を介して
受信できるので、副伝送路正常の伝送路情報データフレ
ーム「０００００００００」を制御局（伝送装置）ＭＬ
１に対して送信する。従属局（伝送装置）Ｓ１は、副伝
送路異常Ｘ２の為に、従属局（伝送装置）Ｓ２からの副
伝送路ＳＬ１系の同期信号が途絶えたことで、副伝送路
ＳＬ１の異常を検出し、副伝送路異常の伝送路状態デー
タフレーム「００００００００１」を制御局（伝送装
置）Ｍ１に対して送信する。The slave station (transmission device) S2 can receive the synchronization signal received by the slave station (transmission device) S3 on the main transmission line ML1 via the sub transmission line SL1 from the slave station (transmission device) S3. Therefore, the normal transmission path information data frame “000000000” is transmitted to the control station (transmission apparatus) ML.
Send to 1. The slave station (transmission device) S1 detects the abnormality of the sub-transmission line SL1 due to the interruption of the synchronization signal of the sub-transmission line SL1 from the slave station (transmission device) S2 due to the sub-transmission line abnormality X2. The transmission path status data frame “000000001” of the sub transmission path abnormality is transmitted to the control station (transmission apparatus) M1.

【００６４】これらの伝送路状態データフレームを受信
した制御局（伝送装置）Ｍ１は、図５に示すように伝送
路状態テーブルへセットする。この図５に示す伝送路状
態テーブルと図１５に示す従来の伝送路状態テーブルと
を、前述のように副伝送路異常がＸ１，Ｘ２の２カ所の
場合について、比較すれば明白なように、従来の伝送路
状態テーブル（図１５）が、各局（伝送装置）Ｓ４，Ｓ
３，Ｓ２，Ｓ１，Ｍ１相互間の各副伝送路ＳＬ１の状態
に正確に対応してないのに対して、前述の実施例１の
（伝送路状態テーブル図５）は、各局（伝送装置）Ｓ
４，Ｓ３，Ｓ２，Ｓ１，Ｍ１相互間の各副伝送路ＳＬ１
の状態に正確に対応している。The control station (transmission apparatus) M1 receiving these transmission line state data frames sets them in the transmission line state table as shown in FIG. As apparent from the comparison between the transmission path state table shown in FIG. 5 and the conventional transmission path state table shown in FIG. 15 in the case where the sub-transmission path abnormality is at two locations X1 and X2 as described above, The conventional transmission path state table (FIG. 15) is used for each station (transmission apparatus) S4, S
3, S2, S1, and M1 do not accurately correspond to the state of each sub-transmission line SL1. On the other hand, the transmission line state table (FIG. 5) of the first embodiment is different from each station (transmission apparatus). S
4, S3, S2, S1, M1, each sub-transmission line SL1
Exactly corresponds to the state of

【００６５】即ち、前述のように副伝送路異常がＸ１，
Ｘ２の２カ所の場合（図１０、図３）は、従来の伝送路
状態テーブル（図１５）では、テーブル５のみが「００
０００００００」で、テーブル４〜テーブル１は全て
「００００００００１」である。これに対し、実施例１
のもの（伝送路状態テーブル図５）では、各局（伝送装
置）間の各副伝送路ＳＬ１の状態に正確に対応して、従
属局（伝送装置）Ｓ４対応テーブル５は「００００００
０００」、従属局（伝送装置）Ｓ３対応テーブル４は
「００００００００１」、従属局（伝送装置）Ｓ２対応
テーブル３は「０００００００００」従属局（伝送装
置）Ｓ１対応テーブル２は「００００００００１」制御
局（伝送装置）Ｍ１対応テーブル１は「０００００００
００」となっている。That is, as described above, if the sub-transmission line abnormality is X1,
In the case of two locations of X2 (FIGS. 10 and 3), in the conventional transmission path state table (FIG. 15), only the table 5 is "00".
00000000 ”, and Tables 4 to 1 are all“ 000000001 ”. In contrast, Example 1
(Transmission path state table, FIG. 5), the subordinate station (transmission apparatus) S4 correspondence table 5 corresponds to “000000” corresponding to the state of each sub-transmission path SL1 between each station (transmission apparatus) exactly.
000 ", the dependent station (transmission device) S3 correspondence table 4 is" 0000000001 ", the dependent station (transmission device) S2 correspondence table 3 is" 000000000 ", and the dependent station (transmission device) S1 correspondence table 2 is" 00000000001 "control station (transmission Apparatus) M1 correspondence table 1 is "00000000
00 ”.

【００６６】実施例１における伝送路情報テーブル（図
５）を基にして、副伝送路状態をオペレータに伝えるた
めに、図５の伝送路状態表示用ＬＥＤ ＳＬＰ１，ＳＬ
Ｐ２，ＳＬＰ３，ＳＬＰ４，ＳＬＰ５の点消灯が、前述
の図１１におけるプログラム部３に格納されたプログラ
ムによって行なわれる。図４は、点消灯処理の概略を示
すフローチャートで、以下図４により点消灯処理につい
て説明する。[0066] Based on the transmission path information table (FIG. 5) in Example 1, to convey the sub transmission path condition to the operator, the transmission path status display LED SLP 1 in FIG. 5, SL
P2, SLP3, SLP4, off point SLP5 is divided row by a program stored in the program section 3 in FIG. 11 described above. FIG. 4 is a flowchart showing an outline of the light-on / light-off processing. The light-on / light-off processing will be described below with reference to FIG.

【００６７】伝送装置は、制御局Ｍ１、従属局１，２，
３，４と５つあるので、先ず、ステップ１において伝送
路状態テーブルの先頭（従属局４に対応するテーブル
５）を指す添字ｎに５をセットする。この５のセット
は、伝送装置の数が最初から５と判ってる場合は当初か
ら設定してもよいが、制御局Ｍ１においてオペレータが
設定してもよい。ステップ２にて添字ｎが指すテーブル
の伝送路情報を読み出す。ステップ３ではステップ２で
読み出した伝送路情報に、副伝送路異常が発生している
か判断を行い、発生していない場合（ＮＯの場合）はス
テップ４を実行し、異常が発生している場合（ＹＥＳの
場合）はステップ５を実行する。The transmission device comprises a control station M1, subordinate stations 1, 2, 2,
First, in step 1, 5 is set to a subscript n indicating the head of the transmission path state table (table 5 corresponding to the dependent station 4). This set of 5 may be set from the beginning if the number of transmission devices is known to be 5 from the beginning, but may be set by the operator at the control station M1. In step 2, the transmission path information of the table indicated by the subscript n is read. In step 3, it is determined whether or not the sub-transmission path abnormality has occurred in the transmission path information read in step 2, and if not (in the case of NO), step 4 is executed, and if an abnormality has occurred. If (YES), step 5 is executed.

【００６８】ステップ５はＬＥＤ ＳＬＰ１，ＳＬＰ
２，ＳＬＰ３，ＳＬＰ４，ＳＬＰ５を点灯させる処理
で、前述の従来方式のフローチャートとは異なり、何れ
か一のＬＥＤを点灯させる処理をしても、ＥＮＤとはな
らず、次のステップ６に進む。Step 5 is for LED SLP1, SLP
In the process of turning on SLP3, SLP4, and SLP5, unlike the above-described conventional method, even if the process of turning on one of the LEDs is not END, the process proceeds to the next step 6.

【００６９】ステップ４は、添字ｎが示すテーブルに対
応（図５参照）するＬＥＤ ＳＬＰ１，ＳＬＰ２，ＳＬ
Ｐ３，ＳＬＰ４，ＳＬＰ５を消灯させる処理で、次にス
テップ６へと進む。ステップ６では、次に処理する伝送
路状態テーブルを読み込むために添字ｎに１をマイナス
する。最後にステップ７にて伝送路状態テーブルを全て
処理したか添字ｎにて判断し、全て処理していない場合
には、ステップ２から処理を繰り返す。In step S4, the LEDs SLP1, SLP2, and SL corresponding to the table indicated by the subscript n (see FIG. 5)
In the process of turning off P3, SLP4, and SLP5, the process proceeds to step 6. In step 6, 1 is subtracted from the subscript n to read the transmission path state table to be processed next. Finally, it is determined by the subscript n whether or not all the transmission path state tables have been processed in step 7, and if not all the processing is repeated from step 2.

【００７０】例えば、従属局（伝送装置）Ｓ４の伝送路
情報が取り込まれる場合は、従属局（伝送装置）Ｓ４の
伝送路状態はテーブル５に格納されているので、添字が
５のテーブル５がステップ２において読み出され、ステ
ップ３において副伝送路ＳＬ１に異常が無い（ＮＯ）と
判定されると、ステップ４において、テーブル５（従属
局（伝送装置）Ｓ４が検出した伝送路情報）に対応する
ＬＥＤ ＳＬＰ５を消灯し、ステップ６に進む。ステッ
プ６において、５から１がマイナスされ、その差の値は
４であるので、次のステップ７において０に等しくない
と判断（ＮＯ）され、ステップ２に戻り、前記ステップ
６における差の値４から、テーブル４（従属局（伝送装
置）Ｓ３が検出した伝送路情報）を読み込む。For example, when the transmission path information of the subordinate station (transmission apparatus) S4 is fetched, the transmission path state of the subordinate station (transmission apparatus) S4 is stored in the table 5; In step 2, if it is determined in step 3 that there is no abnormality in the sub-transmission line SL 1 (NO), in step 4, it corresponds to the table 5 (transmission line information detected by the dependent station (transmission device) S 4). The LED SLP5 to be turned off is turned off, and the process proceeds to step 6. In step 6, 1 is subtracted from 5 and the value of the difference is 4, so that it is determined in step 7 that the difference is not equal to 0 (NO), the process returns to step 2, and the difference value of 4 in step 6 is returned. From Table 4 (transmission path information detected by the dependent station (transmission apparatus) S3).

【００７１】テーブル４（従属局（伝送装置）Ｓ３が検
出した伝送路情報）に異常がなければステップ３からス
テップ４に進み、テーブル４（従属局（伝送装置）Ｓ３
が検出した伝送路情報）に対応するＬＥＤ ＳＬＰ４を
消灯し、ステップ６に進む。ステップ６では前述と同様
にして、今度は４から１がマイナスされ、その差の値は
３となり、以下、前述と同様に処理されて、テーブル
３，テーブル２……と、前記ステップ２〜ステップ７の
処理を繰り返し、従属局（伝送装置）Ｓ４，Ｓ３，Ｓ
２，Ｓ１に対応のテーブル５，４，３，２の何れにも異
常がなければ、テーブル１（制御局（伝送装置）Ｍ１に
対応）が読み込まれ、ステップ６において、１−１＝０
となり、ステップ７においてＹＥＳとなって、図４のフ
ローチャートでの点消灯処理を終了し、次の点消灯処理
の時期まで待機状態となり、所定時間経過すると、再
度、前述のステップ２〜ステップ７の点消灯処理を行
う。このような点消灯処理を周期的に繰り返す。If there is no abnormality in the table 4 (the transmission path information detected by the dependent station (transmission device) S3), the process proceeds from step 3 to step 4, and the table 4 (the dependent station (transmission device) S3
Turns off the LED SLP4 corresponding to the detected transmission path information), and proceeds to step 6. In step 6, similarly to the above, 1 is subtracted from 4 this time, and the value of the difference is 3, and thereafter, the same processing is performed as described above, and Table 3, Table 2,. 7 is repeated, and the dependent stations (transmission devices) S4, S3, S
If there is no abnormality in any of the tables 5, 4, 3 and 2 corresponding to S2 and S1, Table 1 (corresponding to the control station (transmission device) M1) is read, and in step 6, 1-1 = 0.
Then, the answer to step 7 is YES, and the light-on / light-off process in the flowchart of FIG. 4 is completed, and the system is in a standby state until the next light-on / light-off process. Turns on and off the light. Such a light-on / off process is periodically repeated.

【００７２】テーブル５，テーブル４，テーブル３，テ
ーブル２，テーブル１のうち何れか一のテーブルに伝送
路異常が発生していると、ステップ５において、対応す
るＬＥＤ ＳＬＰ１，ＳＬＰ２，ＳＬＰ３，ＳＬＰ４，
ＳＬＰ５を点灯させ、次のステップ６に進み、以後、前
述と同様に点消灯処理が行われる。If any one of Table 5, Table 4, Table 3, Table 2, and Table 1 has a transmission line abnormality, in Step 5, the corresponding LED SLP1, SLP2, SLP3, SLP4
The SLP 5 is turned on, the process proceeds to the next step 6, and thereafter, the light-on / off process is performed in the same manner as described above.

【００７３】以上のステップ１からステップ７までの処
理を行い、ＥＮＤに至ると、現状の伝送路状態を示すＬ
ＥＤ点消灯状態となる。オペレータはこのＬＥＤ点消灯
状態をチェックし、異常の場合は伝送路の取り替え等の
対処を行う。The above processing from step 1 to step 7 is performed, and when END is reached, L indicating the current transmission line state
The ED is turned off. The operator checks the LED on / off state, and if abnormal, takes measures such as replacing the transmission line.

【００７４】次に、副伝送路ＳＬ１の２箇所に異常が発
生している場合の異常発生箇所の確認について、説明す
る。即ち、図３に示すように副伝送路ＳＬ１の２カ所で
副伝送路異常Ｘ１，Ｘ２が発生しているケースにおい
て、副伝送路異常Ｘ１，Ｘ２の検出から、オペレーター
が対処するまでを、副伝送路異常を制御局（伝送装置）
Ｍ１に送信するための伝送路情報データフレーム（図１
４）、各従属局（伝送装置）Ｓ１，Ｓ２，Ｓ３，Ｓ４か
ら送られてきた伝送路を格納するための伝送路状態テー
ブル（図５）、及び伝送路状態テーブルを基にオペレー
ターに異常を伝える伝送路状態ＬＥＤ点消灯処理フロー
チャート（図４）を用いて説明する。Next, a description will be given of how to confirm the location where the abnormality has occurred when two locations of the sub-transmission line SL1 have an abnormality. That is, in the case where the sub-transmission line abnormalities X1 and X2 occur at two locations on the sub-transmission line SL1 as shown in FIG. Control station (transmission equipment)
A transmission path information data frame to be transmitted to M1 (FIG. 1)
4), based on the transmission path state table (FIG. 5) for storing the transmission paths transmitted from the respective dependent stations (transmission apparatuses) S1, S2, S3, and S4, and the operator based on the transmission path state table, This will be described with reference to the transmission path state LED turning on / off process flowchart (FIG. 4).

【００７５】図３のように従属局（伝送装置）Ｓ４と従
属局（伝送装置）Ｓ３との間の副伝送路ＳＬ１に異常Ｘ
１が発生しているので、異常発生地点Ｘ１より信号伝送
方向で下流にある従属局（伝送装置）Ｓ３には、前述の
図１で説明したように、従属局（伝送装置）Ｓ３の伝送
路切り替え手段（スイッチ）ＳＷ２４への同期信号が流
れない状態になり、図の異常発生地点Ｘ１より下流の従
属局（伝送装置）Ｓ３の副伝送路異常検出器ＳＤ２は同
期信号が無いことを検出し、副伝送路ＳＬ１の異常Ｘ１
を検出することとなる。As shown in FIG. 3, when the sub-transmission line SL1 between the subordinate station (transmission apparatus) S4 and the subordinate station (transmission apparatus) S3 has an abnormal X
1 has occurred, the dependent station (transmission device) S3 downstream of the abnormality occurrence point X1 in the signal transmission direction is transmitted to the dependent station (transmission device) S3 as described with reference to FIG. The synchronization signal does not flow to the switching means (switch) SW24, and the sub-transmission path abnormality detector SD2 of the dependent station (transmission device) S3 downstream from the abnormality occurrence point X1 in the figure detects that there is no synchronization signal. , Abnormality X1 of sub-transmission line SL1
Will be detected.

【００７６】副伝送路ＳＬ１の異常Ｘ１を検出した従属
局（伝送装置）Ｓ３は、図１４で示す伝送路情報データ
フレーム中の伝送路情報Ｉに副伝送路異常「１」をセッ
トし、伝送路情報Ｉ即ち「００００００００１」を送信
する。この従属局（伝送装置）Ｓ３からの伝送路情報Ｉ
を受信した制御局（伝送装置）Ｍ１は、伝送路状態テー
ブル（図５）に当該伝送路情報Ｉを格納する。その結
果、伝送路状態テーブルの内容は図５に示すように、テ
ーブル４（従属局Ｓ３に対応）は「００００００００
１」となり、「従属局（伝送装置）Ｓ３が副伝送路ＳＬ
１の異常Ｘ１を検出している」となる。The slave station (transmission apparatus) S3 which has detected the abnormality X1 of the sub-transmission line SL1 sets the sub-transmission line abnormality "1" to the transmission line information I in the transmission line information data frame shown in FIG. The route information I, ie, “00000000001” is transmitted. The transmission path information I from the slave station (transmission apparatus) S3
The control station (transmission device) M1 that has received the information stores the transmission path information I in the transmission path state table (FIG. 5). As a result, as shown in FIG. 5, the contents of the transmission path state table are such that Table 4 (corresponding to the dependent station S3) has "0000000000".
1 "and" the dependent station (transmission device) S3
1 abnormality X1 is detected. "

【００７７】次に、従属局（伝送装置）Ｓ３と従属局
（伝送装置）Ｓ２との間の副伝送路ＳＬ１には、図３に
示すように、異常が発生していないので、従属局（伝送
装置）Ｓ２では、前述の図１で説明したように、従属局
（伝送装置）Ｓ３の主伝送路ＭＬ１における主伝送路入
力ＭＬ１２Ｉの同期信号が、伝送路切り替え手段ＳＷ２
１の接点ＭＲ２０，ＭＲ２１→通信制御用ＩＣ→副伝送
路ＳＬ１における伝送路切り替え手段ＳＷ２３の接点Ｓ
Ｓ２２，ＳＳ２０の経路で、従属局（伝送装置）Ｓ２に
おける伝送路切り替え手段ＳＷ１４の接点ＳＲ１０，Ｓ
Ｒ１１に伝送される。つまり、従属局（伝送装置）Ｓ３
より、副伝送路ＳＬ１の同期信号上流側に異常Ｘ１が発
生していても、従来方式とは異なって、同期信号は従属
局（伝送装置）Ｓ２における伝送路切り替え手段ＳＷ１
４の接点ＳＲ１０，ＳＲ１１に伝送される。従って、従
属局（伝送装置）Ｓ２の副伝送路異常検出器ＳＤ１は、
当該同期信号があることを検出し、従属局（伝送装置）
Ｓ３と従属局（伝送装置）Ｓ２との間の副伝送路ＳＬ１
には、図３に示すように、異常が発生していないことを
検出する。Next, since no abnormality has occurred in the sub-transmission line SL1 between the dependent station (transmission device) S3 and the dependent station (transmission device) S2 as shown in FIG. In the transmission device) S2, as described with reference to FIG. 1, the synchronization signal of the main transmission line input ML12I in the main transmission line ML1 of the slave station (transmission device) S3 is transmitted by the transmission line switching means SW2.
1 contact MR20, MR21 → communication control IC → contact S of transmission line switching means SW23 in sub-transmission line SL1
In the paths of S22 and SS20, the contacts SR10 and S4 of the transmission path switching means SW14 in the subordinate station (transmission apparatus) S2.
It is transmitted to R11. That is, the dependent station (transmission device) S3
Therefore, even if the abnormality X1 occurs on the upstream side of the synchronization signal of the sub-transmission line SL1, unlike the conventional method, the synchronization signal is transmitted to the transmission line switching means SW1 in the dependent station (transmission device) S2.
4 are transmitted to the contacts SR10 and SR11. Therefore, the sub-transmission line abnormality detector SD1 of the dependent station (transmission device) S2
Detects the presence of the synchronization signal, and determines the dependent station (transmission device)
Sub-transmission line SL1 between S3 and slave station (transmission device) S2
, It is detected that no abnormality has occurred, as shown in FIG.

【００７８】従属局（伝送装置）Ｓ３と従属局（伝送装
置）Ｓ２との間の副伝送路ＳＬ１が異常でないことを検
出した従属局（伝送装置）Ｓ２は、図１４で示す伝送路
情報データフレーム中の伝送路情報Ｉに副伝送路正常
「０」をセットし、伝送路情報Ｉ即ち「０００００００
００」を送信する。この従属局（伝送装置）Ｓ２から伝
送路情報Ｉを受信した制御局（伝送装置）Ｍ１は、伝送
路状態テーブル（図５）に当該伝送路情報Ｉを格納す
る。その結果、伝送路状態テーブルの内容は、図５に示
すように、テーブル３（従属局Ｓ２に対応）は「０００
００００００」となる。即ち、従属局（伝送装置）Ｓ２
は、従来方式とは異なって、従属局（伝送装置）Ｓ３よ
り上流側の副伝送路ＳＬ１の異常Ｘ１に影響されること
なく、従属局（伝送装置）Ｓ３と従属局（伝送装置）Ｓ
２との間の副伝送路ＳＬ１の実際の状態を、対応テーブ
ルに正しく格納することになる。The subordinate station (transmission apparatus) S2 that has detected that the sub-transmission line SL1 between the subordinate station (transmission apparatus) S3 and the subordinate station (transmission apparatus) S2 is not abnormal is connected to the transmission path information data shown in FIG. The sub-transmission line normal “0” is set in the transmission line information I in the frame, and the transmission line information I, that is, “00000000” is set.
00 ”is transmitted. The control station (transmission apparatus) M1 that has received the transmission path information I from the dependent station (transmission apparatus) S2 stores the transmission path information I in the transmission path state table (FIG. 5). As a result, as shown in FIG. 5, the content of the transmission path state table is "000" in Table 3 (corresponding to the dependent station S2).
000000 ”. That is, the dependent station (transmission device) S2
Is different from the conventional method in that the dependent station (transmission apparatus) S3 and the dependent station (transmission apparatus) S3 are not affected by the abnormality X1 of the sub-transmission line SL1 upstream of the dependent station (transmission apparatus) S3.
2, the actual state of the sub-transmission line SL1 is correctly stored in the correspondence table.

【００７９】次に、従属局（伝送装置）Ｓ２と従属局
（伝送装置）Ｓ１との間の副伝送路ＳＬ１に異常Ｘ２が
発生しているので、異常発生地点Ｘ２より信号伝送方向
で直下流にある従属局（伝送装置）Ｓ１には、図１で説
明した従属局（伝送装置）Ｓ３の場合と同様に、副伝送
路入力端の伝送路切り替え手段（スイッチ）（従属局
（伝送装置）Ｓ１については図示せず）への同期信号が
流れない状態となり、図の異常発生地点Ｘ２より直下流
の従属局（伝送装置）Ｓ１の副伝送路異常検出器（従属
局（伝送装置）Ｓ１については図示せず）は同期信号が
無いことを検出し、副伝送路ＳＬ１の異常Ｘ２を検出す
ることとなる。Next, since the abnormality X2 has occurred in the sub-transmission line SL1 between the slave station (transmission device) S2 and the slave station (transmission device) S1, it is immediately downstream in the signal transmission direction from the abnormality occurrence point X2. As in the case of the dependent station (transmission apparatus) S3 described with reference to FIG. 1, the dependent station (transmission apparatus) S1 has transmission line switching means (switch) (subordinate station (transmission apparatus) at the sub-transmission path input end. A synchronization signal does not flow to S1 (not shown), and a sub-transmission line abnormality detector (dependent station (transmission apparatus) S1 of the dependent station (transmission apparatus) S1 immediately downstream from the abnormality occurrence point X2 in the figure. (Not shown) detects that there is no synchronization signal, and detects an abnormality X2 of the sub-transmission line SL1.

【００８０】副伝送路ＳＬ１の異常Ｘ２を検出した従属
局（伝送装置）Ｓ１は、図１４で示す伝送路情報データ
フレーム中の伝送路情報Ｉに副伝送路異常「１」をセッ
トし、伝送路情報Ｉ即ち「００００００００１」を送信
する。この従属局（伝送装置）Ｓ１からの伝送路情報Ｉ
を受信した制御局（伝送装置）Ｍ１は、伝送路状態テー
ブル（図５）に当該伝送路情報Ｉを格納する。その結
果、伝送路状態テーブルの内容は図５に示すように、テ
ーブル２（従属局Ｓ１に対応）は「００００００００
１」となり、「従属局（伝送装置）Ｓ１が副伝送路ＳＬ
１の異常Ｘ２を検出している」となる。従属局（伝送装
置）Ｓ４、制御局（伝送装置）Ｍ１は、何れも副伝送路
の信号伝送方向直前の伝送装置（制御局Ｍ１、従属局Ｓ
１）との間の副伝送路ＳＬ１に異常が発生していないの
で、前述の従属局（伝送装置）Ｓ２の場合と同様に動作
し、各々、伝送路情報「０００００００００」を制御局
（伝送装置）Ｍ１へ伝送し、各伝送装置（従属局Ｓ４、
制御局Ｍ１）に対応したテーブル５、Ｓ１の状態は、
「０００００００００」となる。The slave station (transmission apparatus) S1 which has detected the abnormality X2 of the sub-transmission line SL1 sets the sub-transmission line abnormality "1" to the transmission line information I in the transmission line information data frame shown in FIG. The route information I, ie, “00000000001” is transmitted. The transmission path information I from the slave station (transmission apparatus) S1
The control station (transmission device) M1 that has received the information stores the transmission path information I in the transmission path state table (FIG. 5). As a result, as shown in FIG. 5, the contents of the transmission path state table are "00000000" in Table 2 (corresponding to the dependent station S1).
1 ", and the dependent station (transmission device) S1
1 abnormal X2 is detected. " Each of the slave station (transmission device) S4 and the control station (transmission device) M1 is a transmission device (control station M1, slave station S1) immediately before the signal transmission direction of the sub-transmission line.
Since no abnormality has occurred in the sub-transmission line SL1 between the sub-station (1) and the sub-station (transmission apparatus) S2, the sub-station operates in the same manner as in the case of the dependent station (transmission apparatus) S2, and transmits the transmission path information “000000000” to the control station (transmission apparatus). ) M1 and each transmission device (dependent station S4,
The state of Table 5, S1 corresponding to the control station M1) is
"000000000".

【００８１】ここで図４の伝送路状態ＬＥＤ点消灯処理
を行うと、前述のように、ステップ２においては、副伝
送路ＳＬ１の信号伝送方向上流側から伝送路状態テーブ
ルを読み込むため、従属局Ｓ４に対応したテーブル５が
読み込まれ、テーブル５の伝送路状態が、図５に示すよ
うに「０００００００００」であるので、ステップ３に
おいて「副伝送路異常無し」（ＮＯ）と判断され、次の
ステップ４に進み、テーブル５に対応するＬＥＤ ＳＬ
Ｐ５を消灯する。ステップ４から次にステップ６に進
み、前記テーブル番号「５」の５から１がマイナスされ
てその差「４」が導出され、次のステップ７において、
差「４」は０ではないので、ＮＯとなり、ステップ２に
戻る。When the transmission line state LED is turned on and off in FIG. 4, as described above, in step 2, the transmission line state table is read from the signal transmission direction upstream side of the sub transmission line SL1. The table 5 corresponding to S4 is read, and the transmission path state of the table 5 is “000000000” as shown in FIG. 5, so that it is determined in step 3 that “there is no sub-transmission path abnormality” (NO), and the next Proceed to step 4 and check the LED SL corresponding to table 5
P5 is turned off. The process proceeds from step 4 to step 6, where 1 is subtracted from 5 of the table number "5" to derive the difference "4". In the next step 7,
Since the difference “4” is not 0, the result is NO, and the process returns to step 2.

【００８２】ステップ２において、前記差「４」を添字
に持つテーブル４が読み込まれる。テーブル４は従属局
（伝送装置）Ｓ３が検出した副伝送路ＳＬ１の状態「０
０００００００１」を格納したものであり、副伝送路異
常の情報「１」を有しているので、「副伝送路異常有
り」（ＹＥＳ）と判断されて、ステップ５に進み、テー
ブル４（従属局Ｓ３）に対応するＬＥＤ ＳＬＰ４を点
灯して、次のステップ６へ進む。ステップ６では、前記
テーブル４の添字「４」の４から１がマイナスされてそ
の差「３」が導出され、次のステップ７において、差
「３」は０ではないので、ＮＯとなり、ステップ２に戻
る。以下、前述と同様にして、テーブル３，テーブル
２，テーブル１と順に読み込まれ、そのテーブルの内容
「００００００００」「００００００００１」に対応し
て、前述のテーブル内容「００００００００」「０００
０００００１」の場合と同様に点消灯処理が行われて、
テーブル３に対応するＬＥＤ ＳＬＰ３を消灯、テーブ
ル２に対応するＬＥＤ ＳＬＰ２を点灯し、テーブル１
に対応するＬＥＤ ＳＬＰ１を消灯する。即ち、副伝送
路ＳＬ１の状態に正しく対応したＬＥＤ点消灯が行われ
る。In step 2, the table 4 having the difference "4" as a subscript is read. Table 4 indicates the state “0” of the sub-transmission line SL1 detected by the dependent station (transmission device) S3.
00000001 "and has information" 1 "of the sub-transmission line abnormality, so it is determined that" there is a sub-transmission line abnormality "(YES), the process proceeds to step 5, and the table 4 (dependent station) The LED SLP4 corresponding to S3) is turned on, and the process proceeds to the next step 6. In step 6, 1 is subtracted from 4 of the subscript "4" of the table 4 to derive the difference "3". In the next step 7, since the difference "3" is not 0, the result is NO. Return to Hereinafter, in the same manner as described above, Table 3, Table 2, and Table 1 are sequentially read, and corresponding to the table contents "00000000" and "00000000001," the table contents "00000000" and "000
The lighting / lighting-off process is performed as in the case of “000001”.
LED SLP3 corresponding to Table 3 is turned off, LED SLP2 corresponding to Table 2 is turned on, and Table 1 is turned on.
LED SLP1 corresponding to is turned off. That is, the LED is turned on / off in accordance with the state of the sub-transmission line SL1.

【００８３】このような伝送路状態ＬＥＤの点消灯状
態、即ち点灯状態のＬＥＤ ＳＬＰ４（テーブル４（従
属局Ｓ３）に対応）、ＳＬＰ２（テーブル２（従属局Ｓ
１）に対応）、消灯状態の各ＬＥＤ ＳＬＰ５（テーブ
ル５（従属局Ｓ４）に対応）、ＳＬＰ３（テーブル３
（従属局Ｓ２）に対応）、ＳＬＰ１（テーブル１（制御
局Ｍ１）に対応）を見て、オペレータは、伝送装置（従
属局）Ｓ４と伝送装置（従属局）Ｓ３との間、及び（従
属局）Ｓ２と伝送装置（従属局）Ｓ１との間の、副伝送
路ＳＬ１に異常Ｘ１，Ｘ２が発生したと認識し、当該副
伝送路ＳＬ１の交換等の復旧作業を行う。The LED SLP4 (corresponding to table 4 (dependent station S3)), SLP2 (table 2 (dependent station S
1)), each LED in an extinguished state SLP5 (corresponding to table 5 (dependent station S4)), SLP3 (table 3)
Looking at (corresponding to the dependent station S2) and SLP1 (corresponding to the table 1 (control station M1)), the operator determines between the transmitting apparatus (dependent station) S4 and the transmitting apparatus (dependent station) S3, and It recognizes that the abnormalities X1 and X2 have occurred in the sub-transmission line SL1 between the (station) S2 and the transmission device (subordinate station) S1, and performs recovery work such as replacement of the sub-transmission line SL1.

【００８４】前述の実施例１の説明から明らかなよう
に、実施例１では、図１６に示す従来のＬＥＤ点消灯処
理のように、副伝送路ＳＬ１に、異常カ所がＸ１，Ｘ２
の２カ所あるいは２カ所以上異常発生した場合であって
も、前述の図１６に示す従来のＬＥＤ点消灯処理のよう
に、ステップ５からＥＮＤとなって、従属局Ｓ３より、
副伝送路ＳＬ１の信号伝送方向下流側にある従属局Ｓ
２，従属局Ｓ１，制御局Ｍ１の各々に対応するテーブル
３，テーブル２，テーブル１が読み込まれなくなるよう
なことはなく、各々に対応するＬＥＤ ＳＬＰ３，ＳＬ
Ｐ２，ＳＬＰ１が、異常があるにも拘らず消灯のままと
なるようなことはない。As is apparent from the above description of the first embodiment, in the first embodiment, unlike the conventional LED turning-on / off processing shown in FIG.
Even if two or more abnormalities have occurred, as in the conventional LED turning-on / off processing shown in FIG.
Subordinate station S downstream of sub-transmission line SL1 in the signal transmission direction
2, the dependent station S1, the table 3 corresponding to each of the control stations M1, the table 2 and the table 1 do not become unread, and the LEDs SLP3 and SL corresponding to each
P2 and SLP1 do not remain unlit despite abnormalities.

【００８５】従って、前述の従来の副伝送路異常検出方
式のように、、伝送装置（従属局）Ｓ１と伝送装置（従
属局）Ｓ２との間の副伝送路ＳＬ１にも異常Ｘ２が発生
しているにも拘らず、伝送路状態ＬＥＤ ＳＬＰ２も消
灯しているため、オペレータが前記異常Ｘ２を認識でき
ず、伝送システムを再稼働することによって、初めてテ
ーブル２（従属局Ｓ１）に対応した伝送路状態ＬＥＤ
ＳＬＰ２が点灯するので、伝送装置（従属局）Ｓ１と伝
送装置（従属局）Ｓ２との間の副伝送路の異常をオペレ
ータが遅れて認識し、当該副伝送路の復旧作業が遅れて
しまうといったことは、前述の実施例１では生じない。Therefore, as in the above-described conventional sub-transmission line abnormality detection method, the abnormality X2 also occurs in the sub-transmission line SL1 between the transmission device (dependent station) S1 and the transmission device (dependent station) S2. Despite this, the transmission path status LED SLP2 is also turned off, so that the operator cannot recognize the abnormality X2, and restarts the transmission system to perform the transmission corresponding to the table 2 (dependent station S1) for the first time. Road status LED
Since the SLP2 is turned on, the operator recognizes the abnormality of the sub-transmission line between the transmission apparatus (dependent station) S1 and the transmission apparatus (dependent station) S2 with a delay, and the recovery work of the sub-transmission path is delayed. This does not occur in the first embodiment.

【００８６】なお、前述の実施例１では、副伝送路ＳＬ
１の異常を検出する場合について説明したが、主伝送路
ＭＬ１に異常が発生した場合には、各伝送装置Ｍ１，Ｓ
１，Ｓ２，Ｓ３，Ｓ４の主伝送路接続と副伝送路接続を
切り替え直して、副伝送路ＳＬ１にて伝送データの送受
信を行うことになる。この場合は、言い替えれば、ＳＬ
１が主伝送路となり、ＭＬ１が副伝送路となっている。
このような場合は、主伝送路となった伝送路ＳＬ１の伝
送路切り替え手段ＳＷ１３，ＳＷ１４，ＳＷ２３，ＳＷ
２４，……の接続状態を、前述の実施例１の主伝送路Ｍ
Ｌ１における伝送路切り替え手段ＳＷ１１，ＳＷ１２，
ＳＷ２１，ＳＷ２２……の接続状態と同じ接続状態と
し、副伝送路となった伝送路ＭＬ１の伝送路接続手段Ｓ
Ｗ１１，ＳＷ１２，ＳＷ２１，ＳＷ２２……の接続状態
を、前述の実施例１の副伝送路ＳＬ１における伝送路切
り替え手段ＳＷ１３，ＳＷ１４，ＳＷ２３，ＳＷ２４，
……の接続状態とすることにより、前述の実施例１の場
合と同様な効果を奏する。In the first embodiment, the sub-transmission line SL
1 has been described, but if an abnormality has occurred in the main transmission line ML1, each of the transmission devices M1, S
The main transmission line connection and the sub transmission line connection of S1, S2, S3, and S4 are switched again, and transmission / reception of transmission data is performed on the sub transmission line SL1. In this case, in other words, SL
1 is a main transmission path, and ML1 is a sub transmission path.
In such a case, the transmission path switching means SW13, SW14, SW23, SW of the transmission path SL1 which has become the main transmission path.
,... Are connected to the main transmission path M of the first embodiment.
Transmission line switching means SW11, SW12,
The connection state is the same as the connection state of the switches SW21, SW22,.
The connection states of W11, SW12, SW21, SW22,... Are determined by the transmission line switching means SW13, SW14, SW23, SW24,
By setting the connection state of..., The same effect as in the case of the first embodiment described above can be obtained.

【００８７】実施例２．また、従属局Ｓ１、Ｓ２、Ｓ
３、Ｓ４の構成を、図６に示すように副伝送路の信号の
伝送方向を主伝送路の信号の伝送方向と同じ方向になる
ようにしてもよい。この場合の伝送システム全体の伝送
路接続概略図は図７に示すようになり、また副伝送路異
常発生時には、図８に示すような態様となる。動作の詳
細は実施例１の場合と同様であるので詳細な説明は省略
する。Embodiment 2 FIG. Also, the dependent stations S1, S2, S
3, the configuration of S4 may be such that the transmission direction of the signal on the sub transmission path is the same as the transmission direction of the signal on the main transmission path as shown in FIG. FIG. 7 is a schematic diagram of the transmission line connection of the entire transmission system in this case, and when a sub-transmission line abnormality occurs, the state is as shown in FIG. The details of the operation are the same as those in the first embodiment, and a detailed description thereof will be omitted.

【００８８】[0088]

【発明の効果】以上のようにこの発明の伝送系統装置
は、主伝送路と各伝送装置を経由して情報伝送を行なっ
ている状態において、相隣接する２つの各伝送装置間の
それぞれに、前記相隣接する一方の伝送装置の副伝送路
の出力側の伝送路切り替え手段から、その他方の伝送装
置の副伝送路の入力側の副伝送路異常検出器と伝送路切
り替え手段を経て、その伝送装置の副伝送路の出力側の
伝送路切り替え手段に至る単位副伝送路が、互いに接続
されずに分断して形成したので、この分断された各単位
副伝送路毎にその異常を検出することができ、その異常
の原因となった断線等の障害の復旧をより早く行なうこ
とができる。Transmission system equipment of the present invention as described above, according to the present invention
It is carried out information transmitted via the main transmission line and the transmission device
Between two adjacent transmission devices
A sub-transmission line of one of the adjacent transmission devices,
From the transmission path switching means on the output side of the
Sub-transmission line abnormality detector on input side of sub-transmission line and transmission line disconnection
Through the switching means, the output side of the sub-transmission path of the transmission device.
Unit sub-transmission lines leading to transmission line switching means are connected to each other
Each of the divided units
The abnormality can be detected for each sub-transmission line, and the failure such as a disconnection that caused the abnormality can be recovered more quickly.

【図面の簡単な説明】[Brief description of the drawings]

【図１】この発明の実施例１における従属局（伝送装
置）間の伝送路接続詳細図。FIG. 1 is a detailed diagram of a connection of a transmission line between dependent stations (transmission devices) in Embodiment 1 of the present invention.

【図２】この発明の実施例１における伝送システム全体
の伝送路接続概略図。FIG. 2 is a schematic diagram of a transmission line connection of the entire transmission system according to the first embodiment of the present invention.

【図３】図２に示す伝送システム構成での副伝送路異常
発生例を示す伝送システム全体の伝送路接続概略図。FIG. 3 is a schematic transmission line connection diagram of the entire transmission system showing an example of occurrence of a sub-transmission line abnormality in the transmission system configuration shown in FIG. 2;

【図４】この発明の実施例１における伝送路状態をＬＥ
Ｄの点消灯で示すためのＬＥＤ点消灯処理概略フローチ
ャート。FIG. 4 shows the state of the transmission line according to the first embodiment of the present invention as LE.
4 is a schematic flowchart of an LED turning-on / off process for indicating by turning on / off of D.

【図５】この発明の実施例１における図２に示す副伝送
路異常発生状態の場合の副伝送路状態テーブル構成及び
この副伝送路状態テーブル構成に対応したＬＥＤ点消灯
状態を示す図。FIG. 5 is a diagram showing a configuration of a sub-transmission line state table in the case of a sub-transmission line abnormality occurrence state shown in FIG.

【図６】この発明の実施例２における従属局（伝送装
置）間の伝送路接続詳細図。FIG. 6 is a detailed diagram of a transmission line connection between dependent stations (transmission devices) in Embodiment 2 of the present invention.

【図７】この発明の実施例２における伝送システム全体
の伝送路接続概略図。FIG. 7 is a schematic diagram of a transmission line connection of the entire transmission system according to the second embodiment of the present invention.

【図８】図７に示す伝送システム構成での副伝送路異常
発生例を示す伝送システム全体の伝送路接続概略図。FIG. 8 is a schematic transmission line connection diagram of the entire transmission system showing an example of occurrence of a sub-transmission line abnormality in the transmission system configuration shown in FIG. 7;

【図９】従来の伝送システムにおける伝送システム全体
の伝送路接続概略図。FIG. 9 is a schematic diagram of a transmission line connection of the entire transmission system in a conventional transmission system.

【図１０】図９に示す従来の伝送システム構成での副伝
送路異常発生例を示す伝送システム全体の伝送路接続概
略図。FIG. 10 is a schematic transmission line connection diagram of the entire transmission system showing an example of occurrence of a sub-transmission line abnormality in the conventional transmission system configuration shown in FIG.

【図１１】この発明が適用される一般的な伝送装置のＨ
／Ｗ構成の一例を示す接続図。FIG. 11 shows H of a general transmission device to which the present invention is applied.
FIG. 3 is a connection diagram illustrating an example of a / W configuration.

【図１２】従来の制御局（伝送装置）における伝送路接
続図。FIG. 12 is a transmission line connection diagram in a conventional control station (transmission apparatus).

【図１３】従来の従属局（伝送装置）における伝送路接
続図。FIG. 13 is a transmission line connection diagram in a conventional slave station (transmission device).

【図１４】従属局（伝送装置）で検出され制御局（伝送
装置）へ送られる伝送路情報の伝送路状態データフレー
ムの一例を示す図。FIG. 14 is a diagram illustrating an example of a transmission path state data frame of transmission path information detected by a dependent station (transmission apparatus) and sent to a control station (transmission apparatus).

【図１５】従来の伝送システムにおける図２に示す副伝
送路異常発生状態の場合の副伝送路状態テーブル構成及
びこの副伝送路状態テーブル構成に対応したＬＥＤ点消
灯状態を示す図。FIG. 15 is a diagram showing a configuration of a sub-transmission line state table in the case of the sub-transmission line abnormality occurrence state shown in FIG. 2 in a conventional transmission system and an LED turning-on / off state corresponding to the sub-transmission line state table configuration.

【図１６】従来の伝送システムにおける伝送路状態をＬ
ＥＤの点消灯で示すためのＬＥＤ点消灯処理概略フロー
チャート。FIG. 16 shows the state of a transmission line in a conventional transmission system as L.
5 is a schematic flowchart of an LED turning on / off process for indicating by turning on and off the ED.

【符号の説明】[Explanation of symbols]

１ ＣＰＵ ２ プログラム部 ３ データ部 ４ 通信制御部ＩＣ ５ 共通バス ＳＷ１１，ＳＷ１２ 主伝送路切り替え手段（スイッ
チ） ＳＷ１３，ＳＷ１４ 副伝送路切り替え手段（スイッ
チ） ＳＷ２１，ＳＷ２２ 主伝送路切り替え手段（スイッ
チ） ＳＷ２３，ＳＷ２４ 副伝送路切り替え手段（スイッ
チ） ＭＤ１，ＭＤ２ 主伝送路異常検出器 ＳＤ１，ＳＤ２ 副伝送路異常検出器 ＭＬ１ 主伝送路 ＳＬ１ 副伝送路 Ｘ１，Ｘ２ 伝送路異常発生点 Ｍ１ 制御局（伝送装置） Ｓ１〜Ｓ４ 従属局（伝送装置） ＳＬＰ１〜ＳＬＰ５ 副伝送路状態ＬＥＤDESCRIPTION OF SYMBOLS 1 CPU 2 Program part 3 Data part 4 Communication control part IC 5 Common bus SW11, SW12 Main transmission path switching means (switch) SW13, SW14 Sub transmission path switching means (switch) SW21, SW22 Main transmission path switching means (switch) SW23 , SW24 Sub transmission line switching means (switch) MD1, MD2 Main transmission line abnormality detector SD1, SD2 Sub transmission line abnormality detector ML1 Main transmission line SL1 Sub transmission line X1, X2 Transmission line abnormality occurrence point M1 Control station (transmission device S1 to S4 Dependent stations (transmission devices) SLP1 to SLP5 Sub transmission path status LED

───────────────────────────────────────────────────── フロントページの続き (58)調査した分野(Int.Cl.7，ＤＢ名) H04L 1/22 H04B 1/74 H01L 12/437 H01L 29/14 ──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. 7 , DB name) H04L 1/22 H04B 1/74 H01L 12/437 H01L 29/14

Claims (2)

(57)【特許請求の範囲】(57) [Claims] 【請求項１】 主伝送路および副伝送路によって互いに
接続された３個以上の複数個の伝送装置を備え、前記各
伝送装置は前記主伝送路の入力側と出力側および前記副
伝送路の入力側と出力側にそれぞれ設けられた伝送路切
り替え手段と、前記副伝送路の入力側に設けられた副伝
送路異常検出器とを有し、前記主伝送路と各伝送装置を
経由して情報伝送を行なっている状態において、相隣接
する２つの前記各伝送装置間のそれぞれに、相隣接する
一方の伝送装置の副伝送路の出力側の伝送路切り替え手
段から、その他方の伝送装置の副伝送路の入力側の前記
副伝送路異常検出器と伝送路切り替え手段を経てその副
伝送路の出力側の伝送路切り替え手段に至る単位副伝送
路を形成し、このそれぞれの単位副伝送路が互いに接続
されずに分断されていることを特徴とする伝送系統装
置。[Claim 1 further comprising a plurality of transmitter 3 or more connected together by a main transmission line and the sub-transmission lines, each
The transmission device includes an input side and an output side of the main transmission line and the sub transmission line.
Transmission path disconnection provided on the input side and output side of the transmission path
Switching means, and a sub-transmission line provided on the input side of the sub-transmission line.
A transmission path abnormality detector, and the main transmission path and each transmission device
In the state of transmitting information via
Adjacent to each other between the two transmission devices
Transmission line switching means on the output side of the sub transmission line of one transmission device
From the input side of the sub-transmission line of the other transmission device
After passing through the sub-transmission line abnormality detector and transmission line switching means,
Unit sub-transmission to transmission line switching means on the output side of the transmission line
And the unit sub-transmission lines are connected to each other.
A transmission system device which is divided without being divided . 【請求項２】 前記各伝送装置は通信制御用ＩＣを有
し、前記各単位副伝送路はこの通信制御用ＩＣを介して
前記主伝送路から同期信号の供給を受け、その有無に応
じて前記単位副伝送路の異常の有無を検出する請求項１
記載の伝送系統装置。2. Each of the transmission devices has a communication control IC.
Each of the unit sub-transmission lines is connected via the communication control IC.
A synchronization signal is supplied from the main transmission path,
And detecting whether there is an abnormality in the unit sub-transmission line.
Transmission line device according.
JP21038293A 1993-08-25 1993-08-25 Transmission system equipment Expired - Fee Related JP3190493B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP21038293A JP3190493B2 (en) 1993-08-25 1993-08-25 Transmission system equipment

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP21038293A JP3190493B2 (en) 1993-08-25 1993-08-25 Transmission system equipment

Publications (2)

Publication Number Publication Date
JPH0766796A JPH0766796A (en) 1995-03-10
JP3190493B2 true JP3190493B2 (en) 2001-07-23

Family

ID=16588420

Family Applications (1)

Application Number Title Priority Date Filing Date
JP21038293A Expired - Fee Related JP3190493B2 (en) 1993-08-25 1993-08-25 Transmission system equipment

Country Status (1)

Country Link
JP (1) JP3190493B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102256320B1 (en) * 2017-12-29 2021-05-27 주식회사 알파클로 Clothing type wearable device using magnet as connector and Modules included therein

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102256320B1 (en) * 2017-12-29 2021-05-27 주식회사 알파클로 Clothing type wearable device using magnet as connector and Modules included therein

Also Published As

Publication number Publication date
JPH0766796A (en) 1995-03-10

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