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KR950009415B1 - Access unit to minimap network - Google Patents

Access unit to minimap network Download PDF

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Publication number
KR950009415B1
KR950009415B1 KR1019920023358A KR920023358A KR950009415B1 KR 950009415 B1 KR950009415 B1 KR 950009415B1 KR 1019920023358 A KR1019920023358 A KR 1019920023358A KR 920023358 A KR920023358 A KR 920023358A KR 950009415 B1 KR950009415 B1 KR 950009415B1
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South Korea
Prior art keywords
network
token bus
carrier
data
band modem
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KR1019920023358A
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Korean (ko)
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KR940017427A (en
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김현기
이전우
하정현
정하재
채영도
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재단법인한국전자통신연구소
양승택
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Priority to KR1019920023358A priority Critical patent/KR950009415B1/en
Publication of KR940017427A publication Critical patent/KR940017427A/en
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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00Data switching networks
    • H04L12/28Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Small-Scale Networks (AREA)

Abstract

The carrier-band modem is adopted in the mini-map network interface unit so that no external interface is necessary. The apparatus includes a carrier band modem(2) for communicating with a token bus controller(1) through data request channels and data identification channels, an amplifier unit for amplifying signals between the carrier band modem and the token bus controller, and a data decoder for providing clock signal to the carrier band modem.

Description

미니 맵 네트워크 접속장치Mini map network interface

제1도는 본 발명의 개략적인 구성을 나타낸 블럭도.1 is a block diagram showing a schematic configuration of the present invention.

제2도는 본 발명의 상세 회로도.2 is a detailed circuit diagram of the present invention.

* 도면의 주요부분에 대한 부호의 설명* Explanation of symbols for main parts of the drawings

TxCLK : 송신클럭(Transmit Clock)TxCLK: Transmit Clock

SMREQ : 스테이션 관리요구(Station Management Request)SMREQ: Station Management Request

TxSYM : 송신심벌(Transmit Symbol)TxSYM: Transmit Symbol

RxCLK : 수신클럭(Receive Clock)RxCLK: Receive Clock

SMIND : 스테이션 관리인식(Station Management Indication)SMIND: Station Management Indication

RxSYM : 수신 심볼(Receive Symbol)RxSYM: Receive Symbol

TxAMP : 송신 증폭기(Transmit AMPlifier)TxAMP: Transmit AMPlifier

RxAMP 수신 증폭기(Receive AMPlifier)RxAMP Receive Amplifier

OP AMP : 연산 증폭기(OPeration AMPlifier)OP AMP: Operation Amplifier

TxOUT : 전송출력(Transmit Output)TxOUT: Transmit Output

TxDIS ; 전송억제 신호(Transmit Disable)TxDIS; Transmit Disable

RxIN : 수신입력(Receive Input)RxIN: Receive Input

FDBK : DC feedback bypassFDBK: DC feedback bypass

U*, D*: PLL위상검출 출력(PLL phase detector output)U * , D * : PLL phase detector output

본 발명은 토큰버스 제어기(Token Bus Controller)와 토큰 버스(Token Bus) 구조의 공장 자동화용 네트워크인 미니 맵(Mini-MAP) 네트워크간에 접속되는 네트워크 접속장치에 관한 것이다.The present invention relates to a network connection device connected between a token bus controller and a mini-map network, a factory automation network having a token bus structure.

종래에는 미니맵 접속장치를 토큰버스 네트워크에 접속시 별도의 외장형 또는 내장형 모뎀을 사용하였다.Conventionally, a separate external or internal modem is used to connect a minimap access device to a token bus network.

따라서, 이 방식은 네트워그 접속장치와 모뎀간의 인터페이스(Interface)가 추가로 필요할 뿐만 아니라 구입가격이 비싸며 시스템 구성이 복잡해지는 단점이 있었다.Therefore, this method not only requires an additional interface between the network connection device and the modem, but also has a disadvantage in that the purchase price is high and the system configuration is complicated.

이에따라 본 발명은 미니맵 네트워크 접속장치 내에 모뎀기능을 추가함으로써 시스템 구성이 간단하면서 별도의 외부 인터페이스가 필요없는 네트워크 접속장치를 구성하는데 그 목적이 있다.Accordingly, an object of the present invention is to add a modem function in a minimap network connection device to configure a network connection device that is simple in system configuration and does not require an external interface.

이를 위하여 본 발명에서는 토큰버스 제어기와 토큰버스 네트워크 간의 접속을 위한토큰버스 캐리어 밴드모뎀(Token Bus Carrier Band Modem) 및 그 제어회로를 구성하여 네트워크 접속장치에 내장시킨다.To this end, in the present invention, a Token Bus Carrier Band Modem and its control circuit for the connection between the Token Bus controller and the Token Bus network are constructed and embedded in the network access device.

토큰버스 캐리어 밴드 모뎀(Token Bus Carrier Band Modem)은 심볼(symbol)의 인코우딩(Encoding)/디코우딩(Decoding), 신호의 전송과 수신, 그리고 물리계층 관리를 포함한 물리계층 기능을 수행한다.Token Bus Carrier Band Modem performs physical layer functions, including symbol encoding / decoding, signal transmission and reception, and physical layer management. .

또한 캐리어 밴드 모뎀은 토큰버스 제어기와 직렬접속 가능하며 IEEE 802.4 단일 채널을 제공한다.Carrier-band modems can also be serially connected to the tokenbus controller and provide an IEEE 802.4 single channel.

제1도는 본 발명의 개략적으로 구성을 나타낸 것으로, 토큰버스 제어기(1)와, 캐리어 밴드모뎀(2), 그리고 토큰버스 네트워크(3)와의 인터페이스 구조를 나타내며, 캐리어 밴드모뎀(2)은 ISO(International Standards Organization) 권고 개방형 시스템간 상호연결(Open System Interconnection : OSI)참조 모델 7계층(물리, 데이타 연결, 네트워크, 전송, 작업, 표시 응용계층)중 물리계층(제1계층)에 해당되는 기능을 수행한다.1 shows a schematic configuration of the present invention, and shows an interface structure between the token bus controller 1, the carrier band modem 2, and the token bus network 3, and the carrier band modem 2 is an ISO ( International Standards Organization) Recommendation Open System Interconnection (OSI) Reference Model For the seventh layer (physical, data connection, network, transport, operation, and presentation application layers), the functions corresponding to the physical layer (first layer) are identified. Perform.

즉, 캐리어 밴드모뎀(2)은 토큰버스 네트워크(3)와 데이타를 교환(송수신)하고 물리계층을 관리한다.That is, the carrier band modem 2 exchanges (transmits and receives) data with the token bus network 3 and manages the physical layer.

토큰버스 제어기(1)와 캐리어 밴드 모뎀(2)간의 통신은 IEEE 802.4 DTE(Data Terminal Equipment), DCE(Data Circuit-terminating Equipment) 직렬 접속과 일치하는 표준화된 직렬 접속방식을 이용한다.The communication between the token bus controller 1 and the carrier band modem 2 uses a standardized serial connection method that is consistent with IEEE 802.4 Data Terminal Equipment (DTE) and Data Circuit-terminating Equipment (DCE) serial connections.

이러한 직렬접속은 캐리어 밴드 모뎀(2)에 명령어(command)와 데이타 트레임(data frame)을 전송하는 역할을 한다.This serial connection is responsible for transmitting commands and data frames to the carrier band modem 2.

제2도는 캐리어 밴드 모뎀(2)으로서 MC68194를 사용한 본 발명의 상세 회로도로서, 토큰버스 제어기(1)와 캐리어 밴드 모뎀(2)은 데이타 요구 채널(data request channel)과 데이타 인식체널(data indication channel)로 구성된다.2 is a detailed circuit diagram of the present invention using the MC68194 as the carrier band modem 2, wherein the token bus controller 1 and the carrier band modem 2 have a data request channel and a data indication channel. It is composed of

데이타 요구채널은 스테이션 관리요구 신호(SMREQ)에 응답하고 각각 다른 의미를 갖는 3개의 송신심볼 신호(TxSYM0, TxSYM1, TxSYM2)선과, 하나의 송신클럭 신호(TxCLK)선 및, 스테이션 관리요구 신호(SMERQ)선으로 구성된다.The data request channel responds to the station management request signal SMREQ and has three transmission symbol signals TxSYM0, TxSYM1, and TxSYM2 lines, one transmission clock signal TxCLK line, and a station management request signal SMERQ. It consists of a line.

스테이션 관리요구 신호(SMREQ)가 "HIGH"상태이면 캐리어 밴드 모뎀(2)은 전송매체 액세스 제어(MAC : Medium Access Control) 모드로 동작하고 "LOW"상태이면 물리계층 관리 모드로 동작한다.If the station management request signal SMREQ is in the "HIGH" state, the carrier band modem 2 operates in the medium access control (MAC) mode and in the "LOW" state, the carrier band modem 2 operates in the physical layer management mode.

데이타 인식채널은 3개의 수신 심볼 신호(RxSYM0, RxSYM1, RxSYM2)선과, 하나의 수신클럭 신호(RxCLK)선 및, 스테이션 관리인식 신호(SMIND)선으로 구성된다.The data recognition channel is composed of three reception symbol signals RxSYM0, RxSYM1, and RxSYM2 lines, one reception clock signal RxCLK line, and a station management recognition signal SMIND line.

또한 스테이션 관리인식 신호(SMIND)가 "HIGH"상태이면 물리계층은 전송매체 액세스 제어모드로 동작하고, "LOW"상태이면 물리계층 관리모드로 동작한다.In addition, if the station management recognition signal SMIND is in the "HIGH" state, the physical layer operates in the transmission medium access control mode, and in the "LOW" state, the physical layer operates in the physical layer management mode.

캐리어 밴드모뎀(2)은 토큰버스 제어기(1)로부터 동기화 된 클럭신호(TxCLK)에 따라 직렬 송신데이타(TxSYM0-2)를 받아 인코우딩하고 변조한다.The carrier band modem 2 receives and encodes and modulates the serial transmission data TxSYM0-2 according to the synchronized clock signal TxCLK from the token bus controller 1.

변조된 송신신호는 캐리어 밴드모뎀(2)의 전송출력 단자(TxOUT, TxOUT*)를 통하여 송신증폭기(4)로 보내진후 신호가 증폭되어 토큰버스 네트워크(3)에 전송된다.The modulated transmission signal is sent to the transmission amplifier 4 through the transmission output terminals TxOUT and TxOUT * of the carrier band modem 2, and then the signal is amplified and transmitted to the token bus network 3.

캐리어 밴드모뎀(2)의 전송출력 단자(TxOUT, TXOUT*)를 통하여 송신증폭기(4)로 보내진 후 신호가 증폭되어 토큰버스 네트워크(3)에 전송된다.The signal is amplified and transmitted to the token bus network 3 through the transmission output terminals TxOUT and TXOUT * of the carrier band modem 2 and then amplified.

이때 전송억제 신호(TxDIS)는 송신증폭기(4)의 신호를 억제하기 위하여 사용된다.At this time, the transmission suppression signal TxDIS is used to suppress the signal of the transmission amplifier 4.

또한, 토큰버스 네트워크(3)로부터 수신된 신호는 수신 증폭기(5)를 거쳐서 신호가 다시 증폭된 후 캐리어 밴드모뎀(2)의 수신 입력단자(RxIN, RxIN*)로 제공된다.In addition, the signal received from the token bus network 3 is provided to the reception input terminals RxIN and RxIN * of the carrier band modem 2 after the signal is amplified again through the reception amplifier 5.

이때 캐리어 밴드모뎀(2)은 수신신호를 디코우딩하고 복조한 후 직렬 수신 데이타를 토큰버스 제어기(1)에 전송한다. FDBK, FDBK*의 두 단자는 수신 증폭기(5) 주위의 직류 피드백(DC feedback)을 우회시키기 위하여 사용한다.At this time, the carrier band modem 2 decodes and demodulates the received signal and transmits serial received data to the token bus controller 1. The two terminals of FDBK and FDBK * are used to bypass the DC feedback around the receive amplifier 5.

연산증폭기(6)와 주변회로는 데이타 복구를 위한 수신클럭을 캐리어 밴드모뎀(2)에 제공하는 데이타 복구 회로로서, 토큰 버스 네트워크(3)로부터 신호 수신시 데이타 복구를 위한 클럭재생 기능과 캐리어 밴드모뎀(2)의 토큰버스 제어기(1)로 수신신호를 전송하도록 하는 기능을 수행한다.The operational amplifier 6 and the peripheral circuits are data recovery circuits that provide the reception band for data recovery to the carrier band modem 2. The clock recovery function and the carrier band for data recovery upon signal reception from the token bus network 3 are performed. It performs a function to transmit the received signal to the token bus controller 1 of the modem (2).

이상과 같이 본 발명에서는 미니 맵 네트워크 접송장치 내에 토큰버스 캐리어밴드 모뎀과 그 제어회로를 내장함으로써 종래의 외장형 또는 내장형 모뎀 사용시 요구되었던 외부인터페이스가 불필요하고 네트워크 접속장치의 설치비용이 저렴하면서 시스템 구성이 간단해지는 장점이 있다.As described above, in the present invention, by embedding the token bus carrier band modem and its control circuit in the mini-map network transmission device, the external interface, which is required when using a conventional external or internal modem, is unnecessary, and the installation cost of the network connection device is low, and the system configuration is low. It has the advantage of being simple.

Claims (1)

토큰버스 제어기(1)와 토큰 버스 구조의 공장 자동화용 미니맵 토큰버스 네트워크(3) 사이에 인터페이싱을 수행하는 네트워크 접속장치에 있어서, 데이타 요구채널과 데이타 인식채널을 통하여 상기 토큰버스 제어기(1)와 직접 통신하는 캐리어 밴드모뎀(2)과, 상기 캐리어 밴드모뎀(2)과 상기 토큰버스 네트워그(3) 사이에 각각 구성되고 상기 캐리어 밴드모뎀(2)으로부터 상기 토큰버스 네트워크(3)로 또는 그 반대로 전달되는 데이타를 각각 증폭하는 송신증폭수단과 수신증폭수단 및, 데이타 복구를 위한 수신클럭을 상기 캐리어 밴드모뎀(2)으로 제공하는 데이타 복구수단을 포함하는 것을 특징으로 하는 미니 맵 네트워크 접속장치.A network connection device for interfacing between a token bus controller 1 and a minimap token bus network 3 for factory automation of a token bus structure, wherein the token bus controller 1 is provided through a data request channel and a data recognition channel. A carrier bandmodem 2 which is in direct communication with the carrier bandmodem 2 and between the carrier bandmodem 2 and the tokenbus network 3, respectively, from the carrier bandmodem 2 to the tokenbus network 3, or On the contrary, a mini map network connection device comprising: transmission amplification means and amplification amplification means for amplifying transmitted data, and data recovery means for providing a reception clock for data recovery to the carrier band modem 2; .
KR1019920023358A 1992-12-04 1992-12-04 Access unit to minimap network KR950009415B1 (en)

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Application Number Priority Date Filing Date Title
KR1019920023358A KR950009415B1 (en) 1992-12-04 1992-12-04 Access unit to minimap network

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Application Number Priority Date Filing Date Title
KR1019920023358A KR950009415B1 (en) 1992-12-04 1992-12-04 Access unit to minimap network

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KR940017427A KR940017427A (en) 1994-07-26
KR950009415B1 true KR950009415B1 (en) 1995-08-22

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