# Advantages of Fieldbus over HART

**URL:** <https://forumautomation.com/t/advantages-of-fieldbus-over-hart/7433>\
**Category:** Industrial Automation\
**Created:** [November 18, 2019, 7:07pm UTC](https://forumautomation.com/t/advantages-of-fieldbus-over-hart/7433 "2019-11-18T19:07:06Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![sivaranjith](https://forumautomation.com/letter_avatar_proxy/v4/letter/s/ba9def/32.png) [@sivaranjith](https://forumautomation.com/u/sivaranjith)\
**Post date:** [November 18, 2019, 7:07pm UTC](https://forumautomation.com/t/advantages-of-fieldbus-over-hart/7433/1 "2019-11-18T19:07:06Z")

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To communicate in a manufacturing plant in a single network, computers and instruments are required so that sensing and real-time monitoring is possible. This network link is known as the [**Field bus**](https://forumautomation.com/t/fieldbus-basics-structure-of-fieldbus/2358). A network bus field bus makes it possible for an organization to work smoothly.

 ![fieldbus-tutorial-part-11-hse-fieldbus-30-638](https://cdn.forumautomation.com/original/2X/3/359efa120bbed408fa3e98e264712c7796970960.jpeg)

The main advantages of fieldbus protocol over [**HART**](https://forumautomation.com/t/hart-communtication-highway-addressable-remote-transducer/2383) protocol is as follows:

- Fully digital end-to-end loop monitoring in real time, from sensor to [**actuator**](https://forumautomation.com/t/what-are-the-types-of-valve-actuators/2470)

- Further current for more efficient two-wire loop powered devices such as transmitters of radar standard, multi-channel temperature transmitters, and more diagnostics etc.

- Balanced (non-grounded) signal with high amplitude for noise immunity

- Intelligent, discrete devices such as two-wire valves on / off

- Several cable, tray, junction boxes and related testing equipment on the same pair of wires.

- Dramatic I / O module reduction in device footprint and weight

- Elimination of I/O card selection simplifying engineering

- Elimination of the choice of safety barriers simplifying design

- Signal removal which simplifies engineering

- Fast installation of equipment

- No [**4-20 mA**](https://forumautomation.com/t/4-20ma-transmitter-basic/4524) range mismatch

- Multi-channel transmitters for temperature

- Easy addition of signals in devices

- Easy to change model to another type of device: e.g. on / off valve for valve control or MOV

- Centralized redesign of the hardware

- Quick test response time

- Indication of accuracy of PV in real time

- Time command balanced

- No 4-20 mA current calibration skew

- Distortion of signal observed

- Total sensor maximum measurement (no 4-20 mA range)

- No 4-20 mA five point loop test

- Advanced device diagnostics