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. A network bus field bus makes it possible for an organization to work smoothly.
The main advantages of fieldbus protocol over HART protocol is as follows:
-
Fully digital end-to-end loop monitoring in real time, from sensor to actuator
-
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 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