US 2022/0103633 A1 · HART-ENABLED DEVICE WITH REDUCED COMMUNICATION LINES AND BREAK EXTENSION PROTOCOL

Abstract

A current loop includes a receiver assembly and a transmitter assembly. The current loop also includes: a first conductor between the receiver assembly and the transmitter assembly; and a second conductor between the receiver assembly and the transmitter assembly to complete the current loop. The transmitter assembly includes: a Highway Addressable Remote Transducer (HART) modem; a component in communication with the HART modem via a partial set of Universal Asynchronous Receiver-Transmitter (UART) communication lines; and a break extension protocol controller coupled to or included with the HART modem and configured to support UART and non-UART communications between the HART modem and the component using the partial set of UART communication lines.

Claims21

Dependent claims

A current loop, comprising:

a receiver assembly;
a transmitter assembly;
a first conductor between the receiver assembly and the transmitter assembly;
and
a second conductor between the receiver assembly and the transmitter assembly to complete the current loop, wherein the transmitter assembly includes:
a Highway Addressable Remote Transducer (HART) modem;
a component in communication with the HART modem via a partial set of Universal Asynchronous Receiver-Transmitter (UART) communication lines;
and
a break extension protocol controller coupled to or included with the HART modem and configured to support UART and non-UART communications between the HART modem and the component using the partial set of UART communication lines.

6 more elements

A current loop transmitter module, comprising:

a microcontroller (MCU);
a converter configured to convert analog signals to digital signals or to convert digital signals to analog signals;
a Highway Addressable Remote Transducer (HART) modem coupled to the MCU and the converter via Universal Asynchronous Receiver-Transmitter (UART) TXD and RXD communication lines;
and
a break extension protocol controller coupled to or included with the HART modem and configured to support Universal Asynchronous Receiver-Transmitter (UART) and non-UART communications between the HART modem and the MCU and between the HART modem and the converter using the UART TXD and RXD communication lines.

2 more elements

Dependencies are inferred from the claim text.

Hart-enabled device with reduced communication lines and break extension protocol

Life of this patent

Hart-enabled device with reduced communication lines and break extension protocol

Life of this patent

Abstract

Claims21