FIELD DEVICE, INFORMATION COLLECTION SYSTEM, AND INFORMATION COLLECTION METHOD

To provide a field device that can be connected to public lines such as the Internet while ensuring security.SOLUTION: A field device comprises: a first processing unit that performs communication processing of first information used for process control and generation processing of second informatio...

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Bibliographische Detailangaben
Hauptverfasser: FUJIMOTO NAOYUKI, YAMAJI MASAHITO, NAGANO SHOJI
Format: Patent
Sprache:eng ; jpn
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Beschreibung
Zusammenfassung:To provide a field device that can be connected to public lines such as the Internet while ensuring security.SOLUTION: A field device comprises: a first processing unit that performs communication processing of first information used for process control and generation processing of second information indicating a diagnosis result by performing self diagnosis of the device itself; a second processing unit having a first wireless unit that performs wireless communication, and that performs a transmission process of making a read request for at least the second information to the first processing unit and transmitting the second information obtained by the read request as a wireless signal from the first wireless unit; and a security unit that permits or refuses requests made from the second processing unit to the first processing unit according to predetermined rules.SELECTED DRAWING: Figure 1 【課題】セキュリティを確保しつつインターネット等の公衆回線に接続することができるフィールド機器等を提供する。【解決手段】フィールド機器は、プロセス制御に用いられる第1情報の通信処理、及び自機の自己診断を行って診断結果を示す第2情報の生成処理を行う第1処理部と、無線通信を行う第1無線部を有しており、第1処理部に対して少なくとも第2情報の読出要求を行い、読出要求により得られる第2情報を無線信号にして第1無線部から送信する送信処理を行う第2処理部と、予め規定された規則に従って、第2処理部から第1処理部に対して行われる要求の許可又は拒絶を行うセキュリティ部とを備えるフィールド機器。【選択図】図1