FIELD: electricity.
SUBSTANCE: field device (14) to be used in control system (10) of production process or current control is connected to two-wire control circuit (16) of production process. Circuit (16) transfers data and supplies power to field device (14). High-frequency electrical diagram (22) in field device (14) provides establishment of high-frequency communication. Power supply (18) supplies power to high-frequency electrical diagram (22) by using the energy received from two-wire control circuit (16) of production process.
EFFECT: improving operating reliability.
97 cl, 7 dwg
| Title | Year | Author | Number |
|---|---|---|---|
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|
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RU2574353C2 |
| VERIFICATION OF PROCESS CONTROL CIRCUIT CURRENT | 2006 |
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RU2389056C2 |
