COMMUNICATION SYSTEM AND LOWER-LEVEL DEVICE

To enable the avoidance of duplication of an address to a lower-level device more simply than a conventional configuration.SOLUTION: A lower-level device 2 includes: a setting unit 206 for temporarily setting an address; a message transmission unit 204 for transmitting a duplication confirmation mes...

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Bibliographische Detailangaben
1. Verfasser:	NISHIDA CHIHO
Format:	Patent
Sprache:	eng ; jpn
Schlagworte:	ELECTRIC COMMUNICATION TECHNIQUE ELECTRICITY TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHICCOMMUNICATION
Online-Zugang:	Volltext bestellen
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Beschreibung
Zusammenfassung:	To enable the avoidance of duplication of an address to a lower-level device more simply than a conventional configuration.SOLUTION: A lower-level device 2 includes: a setting unit 206 for temporarily setting an address; a message transmission unit 204 for transmitting a duplication confirmation message in which the address temporarily set by the setting unit 206 is set as a transmission destination address; a message reception unit 203 for receiving a message; and a confirmation unit 207 for confirming the address temporarily set by the setting unit 206 as an address of its own device and registering it if a duplication confirmation response message which is a message indicating a response to the duplication confirmation message is not received by the message reception unit 203 even if a certain period passes after the message transmission unit 204 transmitted the duplication confirmation message.SELECTED DRAWING: Figure 4 【課題】従来構成に対してより簡易に、下位装置に対するアドレスの重複を回避可能とする。【解決手段】下位装置２は、アドレスを仮設定する設定部２０６と、設定部２０６により仮設定されたアドレスを送信先アドレスとした重複確認電文を送信する電文送信部２０４と、電文の受信を行う電文受信部２０３と、電文送信部２０４により重複確認電文が送信された後一定期間経過しても電文受信部２０３により当該重複確認電文に対する応答を示す電文である重複確認応答電文が受信されない場合に、設定部２０６により仮設定されたアドレスを自機のアドレスとして確定して登録する確定部２０７とを備えた。【選択図】図４