| 摘要 |
<p>A redundancy coupler (10) configured to couple a plurality of redundant master controllers (MCs) (12, 14) to a fieldbus (16) also having at least one slave device (18, 20) communicatively coupled thereto is provided. The redundancy coupler further configured to determine which of the plurality of redundant MCs is active, receive communications from the active MC and to forward the communications from the active MC to the at least one slave device via the fieldbus, and receive communications from the other redundant MCs and to prevent the communications from the other redundant MCs from being forwarded to the at least one slave device.
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