JPS59229945A - Abnormality detecting method of dual control signal route - Google Patents

Abnormality detecting method of dual control signal route

Info

Publication number
JPS59229945A
JPS59229945A JP58104173A JP10417383A JPS59229945A JP S59229945 A JPS59229945 A JP S59229945A JP 58104173 A JP58104173 A JP 58104173A JP 10417383 A JP10417383 A JP 10417383A JP S59229945 A JPS59229945 A JP S59229945A
Authority
JP
Japan
Prior art keywords
signal
signal route
dual control
main controller
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.)
Pending
Application number
JP58104173A
Other languages
Japanese (ja)
Inventor
Minoru Takemura
竹村 稔
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.)
Toshiba Corp
Original Assignee
Toshiba Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Toshiba Corp filed Critical Toshiba Corp
Priority to JP58104173A priority Critical patent/JPS59229945A/en
Publication of JPS59229945A publication Critical patent/JPS59229945A/en
Pending legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00Arrangements for detecting or preventing errors in the information received
    • H04L1/22Arrangements for detecting or preventing errors in the information received using redundant apparatus to increase reliability

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Arrangements For Transmission Of Measured Signals (AREA)
  • Detection And Prevention Of Errors In Transmission (AREA)
  • Maintenance And Management Of Digital Transmission (AREA)
  • Selective Calling Equipment (AREA)

Abstract

PURPOSE:To detect the abnormality of the dual control signal route of a dual control system by adding wiring which is simple in terms of hardware and also adding simple software. CONSTITUTION:A normally ON logical signal (a) is transmitted from a main controller 2 to local controllers 3A and 3B through respective signal routes S1 and S2, and this signal (a) is returned as detection signals a1 and a2 to the main controller 2 through the process output parts and input parts of the local controllers 3A and 3B, and as detection signals a1' and a2' directly through the signal routes R1 and R2 by the intervention of the software in the signal routes R1 and R2 and local controllers 3A and 3B. The ON-OFF states of those returned signals a1 and a1', and a2 and a2' of the two routes are compared while classified by the controllers to detect the abnormality of each signal route.

Description

【発明の詳細な説明】 〔発明の技術分野〕 本発明は、2台のローカルコントローラが1台のメイン
コントローラに接続されたデュアル制御システムにおけ
る信号ルートの異常を検出する方法に関するものである
DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to a method for detecting an abnormality in a signal route in a dual control system in which two local controllers are connected to one main controller.

し発明の技術的背景とその問題点〕 従来、デュアル制御システムにおいて、ローカルコント
ローラのCPU部の異常はハードウェアの故障接点出力
を用いて検出しているが、外線の異常ヤローカルコント
ローラとメインコントロー2間の信号ルートの異常は検
出していない。
[Technical background of the invention and its problems] Conventionally, in a dual control system, an abnormality in the CPU section of the local controller is detected using the fault contact output of the hardware. No abnormality was detected in the signal route between the two.

し発明の目的〕 本発明は、外線からローカルコントローラの入出力部、
 CPU部およびメインコントローラまでの信号ルート
の異常を検出するデュアル制御信号ルートの異常検出方
法を提供することを目的としている。
OBJECT OF THE INVENTION The present invention provides an input/output section of a local controller from an outside line,
It is an object of the present invention to provide a dual control signal route abnormality detection method for detecting an abnormality in a signal route from a CPU section to a main controller.

〔発明の概要〕[Summary of the invention]

本発明はメインコントローラからそれぞれの信号ルート
を介して各ローカルコントローラに常時ONの論理信号
を送信し、この信置を各ローカルコントローラのプロセ
ス出力部およびプロセス入力部を経由した信号ルートお
よび各ローカルコントローラ内のソフトウェアを介した
直接の信号ルートでメインコントローラに返送し、メイ
ンコントローラで受信した上記2ルートの信号のON。
The present invention transmits an always-ON logic signal from the main controller to each local controller via each signal route, and transmits this signal to the signal route via the process output section and process input section of each local controller, and to each local controller. The signals from the above two routes are turned ON by being sent back to the main controller via the direct signal route via the internal software and received by the main controller.

OFFを各コントローラごとに比較して各信号ルートの
異常を検出するデュアル制御信号ルールの異常門出方法
である。
This is an abnormality detection method for dual control signal rules that detects abnormalities in each signal route by comparing OFF for each controller.

〔発明の実施例〕[Embodiments of the invention]

・ 本発明の一実施例を第1図に示す。 - An embodiment of the present invention is shown in FIG.

第1図において、監視操作机1はメインコントローラ2
に操作信号Uをあたえると共に、メインコントローラ2
から状態信号Vがあたえられる。
In FIG. 1, the monitoring operation desk 1 is the main controller 2.
At the same time as giving the operation signal U to the main controller 2
A status signal V is given from.

3A、3Bti1Mローカルコントローラおよび2号ロ
ーカルコントローラであす、メインコントローラ2から
それぞれ信号ルートS1.S、を介して操作信号X11
X2および信号ルート異常判定信号aがあたえられると
共に、信号ルート几1.為を介してそれぞれ状態信号v
l、■3、実際値信号y□+ Yt、および信号ルート
異常検出信号all ai、a’II aGをメインコ
ントローラ2にあたえる。
3A, 3Bti 1M local controller and No. 2 local controller, respectively from the main controller 2 to the signal route S1. Operation signal X11 via S.
X2 and the signal route abnormality determination signal a are given, and the signal route 1. state signal v
1, ■3, actual value signal y□+Yt, and signal route abnormality detection signals all ai, a'II aG are applied to the main controller 2.

上記操作信号x、、x2は入出力判別論理回路4におい
て論理和かとられ、その論理オロ出力が操作信号Xとし
て制御対象5にあたえられる。
The operation signals x, , x2 are logically summed in the input/output discriminating logic circuit 4, and the logical OR output is applied to the controlled object 5 as the operation signal X.

制御対象5の実際値信号yおよび状態信号v0は上記入
出力判別論理回路4を介して、1号コントローラ3Aお
よび2号コントローラ3Bにそれぞれ実際値信号y++
’ltおよび状態信号v1.v、として入力される。
The actual value signal y and status signal v0 of the controlled object 5 are sent to the No. 1 controller 3A and the No. 2 controller 3B as actual value signals y++ via the input/output discrimination logic circuit 4, respectively.
'lt and status signal v1. It is input as v.

常時ONの異常判定信号aはそれぞれ信号ルートS!、
S2ヲ通って1号ローカルコントローラ3Aおよび2号
ローカルコントローラ3Bに入力され、それぞれのプロ
セス出力部およびプロセス入力部を通って検出信号al
lallとして信号ルー)”t+”tを経てメインコン
トローラ2に戻される。
The abnormality determination signal a, which is always ON, is connected to the signal route S! ,
The detection signal al is inputted to the No. 1 local controller 3A and the No. 2 local controller 3B through S2, and passes through the respective process output section and process input section.
The signal is returned to the main controller 2 via the signal loop)"t+"t.

一方上記異常判定信号aはそれぞれ1号ローカルコント
ローラ3Aおよび2号ローカルコントローラ3B内で別
途ソフトウェアによって検出信号a1.a昼と:なり、
プロセス出力部を通らずに直接信号ルー) R+ + 
R2を通ってメインコントローラ2に戻される。
On the other hand, the abnormality determination signal a is generated by separate software in the No. 1 local controller 3A and the No. 2 local controller 3B, respectively, as the detection signal a1. a daytime: becomes;
Direct signal route without passing through the process output section) R+ +
The signal is returned to the main controller 2 through R2.

従ってメインコントローラ2に戻ってきたときの信号a
、がOFFで且つ信号a;がONであれば、信号ルート
R1,S、は正常であり、1号ローカルコントローラ3
Aの入出力部に異常ありと検知され、また信号a1がO
FFで且つ信号aSもOFFであれば、信号ルー) R
,、S、の伺れかに異常ありと検知される。
Therefore, when the signal a returns to the main controller 2,
is OFF and signal a; is ON, the signal route R1, S is normal, and the No. 1 local controller 3
It is detected that there is an abnormality in the input/output section of A, and the signal a1 is O.
If it is FF and the signal aS is also OFF, the signal is R)
,,S, is detected as having an abnormality.

2号ローカルコントローラ3Bについても同様である。The same applies to the No. 2 local controller 3B.

マタローカルコントローラオヨヒローカルコントローラ
とメインコントローラ間の信号ルートに異常がなければ
、上記検出信号aIy a’11 a21 a’2はす
べてONになる。
If there is no abnormality in the signal route between the mata local controller Oyohi local controller and the main controller, the detection signals aIy a'11 a21 a'2 are all turned ON.

この場合制御対象を含む外線に異常があると、上記状態
信号v、とv2とが異なってくるので、■、とV、との
排他的論理和V′を用い−C%V′がONのとき外線異
常と判断することができる。
In this case, if there is an abnormality in the external line that includes the controlled object, the above status signals v and v2 will differ, so using the exclusive OR V' of ■ and V, -C%V' is ON. It can be determined that there is an external line abnormality.

第2図に上記異常判別動作のフローチャートを示す。第
2図においてはONは1、OFFは0で示している。
FIG. 2 shows a flowchart of the above abnormality determination operation. In FIG. 2, ON is shown as 1 and OFF is shown as 0.

し発明の効果〕 以上説明したように、本発明によれば、ハード的lど単
純な配線追加を行なうと共に、m1単なシフトウェアを
追加することにょっ゛c1デュアル制御システムにおけ
る信号ルートの異常を検出できるデュアル制御信号ルー
トの異常検出方法が得られる。
[Effects of the Invention] As explained above, according to the present invention, in addition to adding simple wiring such as hardware, it is possible to solve abnormalities in the signal route in the c1 dual control system by adding simple shiftware for m1. This provides a method for detecting abnormalities in dual control signal routes that can detect.

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

第1図は本発明の一実施例を示す系統図、第2図は本発
明の動作を示すフローチャートである。 1   監視操作机 2   メインコントローラ 3A + 3B  ローカルコントローラ4   入出
力判別論理回路 5   制御対象
FIG. 1 is a system diagram showing an embodiment of the present invention, and FIG. 2 is a flow chart showing the operation of the present invention. 1 Monitoring operation desk 2 Main controller 3A + 3B Local controller 4 Input/output discrimination logic circuit 5 Control target

Claims (1)

【特許請求の範囲】[Claims] 一つの制御対象に対して同一の制御をする2台のローカ
ルコントローラが上位のメインコントローラに信号ルー
トを介して接続されたデュアル制御システムにおいて、
メインコントローラからそれぞれの信号ルートを介して
各ローカルコントローラに常時ONの論理信号を送信し
、この信号を各ローカルコントローラのプロセス出力部
およびプロセス入力部を経由した信号ルートおよび各ロ
ーカルコントローラ内のソフトウェアを介した直接の信
号ルートでメインコントローラに返送し、メインコント
ローラで受信した上記2ルートの信号のON、OFFを
各コントローラごとに比較して各信号ルートの異常を検
出することを特徴とするデュアル制御信号ルートの異常
検出方法。
In a dual control system, two local controllers that perform the same control over one controlled object are connected to the upper main controller via a signal route.
An always-on logic signal is sent from the main controller to each local controller via each signal route, and this signal is sent to the signal route via the process output section and process input section of each local controller and the software in each local controller. Dual control characterized by detecting an abnormality in each signal route by comparing ON and OFF states of the above-mentioned two routes received by the main controller for each controller. How to detect anomalies in signal routes.
JP58104173A 1983-06-13 1983-06-13 Abnormality detecting method of dual control signal route Pending JPS59229945A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP58104173A JPS59229945A (en) 1983-06-13 1983-06-13 Abnormality detecting method of dual control signal route

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP58104173A JPS59229945A (en) 1983-06-13 1983-06-13 Abnormality detecting method of dual control signal route

Publications (1)

Publication Number Publication Date
JPS59229945A true JPS59229945A (en) 1984-12-24

Family

ID=14373633

Family Applications (1)

Application Number Title Priority Date Filing Date
JP58104173A Pending JPS59229945A (en) 1983-06-13 1983-06-13 Abnormality detecting method of dual control signal route

Country Status (1)

Country Link
JP (1) JPS59229945A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6482300A (en) * 1987-09-25 1989-03-28 Seiko Epson Corp Measuring instrument

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6482300A (en) * 1987-09-25 1989-03-28 Seiko Epson Corp Measuring instrument

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