发明名称 |
MULTI-PROTOCOL FIELD DEVICE AND COMMUNICATION METHOD |
摘要 |
A multi-protocol smart field device uses a Fieldbus communication protocol t o communicate process control information and uses a HART communication protoc ol to enable local configuration of the field device via a hand-held HART communicator. The multi-protocol smart field device includes a first communications interface communicatively coupled to a digital data bus that is adapted to process HART communications which are received from and which are sent to a HART hand-held communicator. The multi-protocol smart field device further includes a second communications interface communicatively coupled t o the digital data bus that is adapted to process Fieldbus communications. Additionally, the multi-protocol smart field device includes a first filter coupled between the first communications interface and the digital data bus that substantially attenuates signals having frequencies associated with Fieldbus communications and a second filter coupled between the second communications interface and the digital data bus that substantially attenuates signals having frequencies associated with HART communications.</ SDOAB>
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申请公布号 |
CA2451294(C) |
申请公布日期 |
2008.12.30 |
申请号 |
CA20022451294 |
申请日期 |
2002.07.10 |
申请人 |
FISHER-ROSEMOUNT SYSTEMS, INC. |
发明人 |
PACKWOOD, STEVE A.;LARSON, BRENT H.;BROWN, LARRY K. |
分类号 |
G05B19/05;H04L12/40;G05B19/042;H04L29/06 |
主分类号 |
G05B19/05 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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