Field device
AssigneeYokogawa Electric Corporation
InventorSeiichiro TAKAHASHI
Life of this patent
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Abstract
There is provided a field device performing a communication through a communication line. The field device includes: first circuits involved with a smart communication; second circuits involved with a fieldbus communication; a token detecting circuit that detects a token in the fieldbus communication; and a control circuit. The control circuit is operable to: i) cause the second circuits to operate when the token is detected within a given time by the token detecting circuit; and ii) cause the second circuits not to operate when the token is not detected within the given time by the token detecting circuit.
Claims6
A field device performing a communication through a communication line, the field device comprising:
- first circuits involved with a smart communication;
- second circuits involved with a fieldbus communication;
- a token detecting circuit that detects a token in the fieldbus communication;
- and
- a control circuit operable to:
- i) cause the second circuits to operate when the token is detected within a given time by the token detecting circuit;
- and
- ii) cause the second circuits not to operate when the token is not detected within the given time by the token detecting circuit.
Dependencies are inferred from the claim text.