Multidrop 1-5 v process automation network

Number of patents in Portfolio can not be more than 2000

United States of America

PATENT NO 12266930
SERIAL NO

18526128

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Abstract

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A process automation system includes a central controller, a four-conductor, multi-drop bus, 1 to 16 1-5 V field devices, and 1 to 16 coupler boxes, each coupler box connecting a respective field device with the bus. The central controller includes a dual-tone, multiple-frequency (DTMF) encoder and each coupler box includes a DTMF decoder. Each coupler box isolates its associated field device's 1-5 V signal from the bus unless the coupler box is addressed by the central controller via a DTMF signal.

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Patent Owner(s)

  • ENDRESS+HAUSER SE+CO.KG

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Karnik, Gautham Whitestown, US 16 5

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