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What is HART, Foundation Fieldbus & Profibus ?

S Bharadwaj Reddy
What is HART ? HART stands for ‘Highway Addressable Remote Transducer’ and is a standard originally developed as a communications protocol for control field devices operating on a 4-20 mA control signal.

Foundation Fieldbus Signal Conversion Formula

S Bharadwaj Reddy
Every foundation fieldbus transmitters have mainly two types of scales or ranges. one is XD scale & second one is OUT Scale. Transducer scaling (XD_SCALE) is applied to the value

What is a Fieldbus ?

S Bharadwaj Reddy
Fieldbus is a digital two-way multidrop communication link between intelligent field devices. It is a local area network dedicated to industrial automation. It replaces centralized control networks with distributed control

Comparison between Foundation Fieldbus and Profibus

S Bharadwaj Reddy
Foundation Fieldbus FOUNDATION Fieldbus is an all-digital, serial, two-way communications system that serves as the base-level network in a plant or factory automation environment. It is an open architecture, developed

Field Transmitter Communication Troubleshooting

S Bharadwaj Reddy
When intelligent devices are not communicating or show abnormal status for any reason the DD file often get blamed first. However, the DD file is usually not the problem so

Fieldbus vs 4-20mA

S Bharadwaj Reddy
Traditionally wired systems The sensors and actuators that are connected to the inputs and outputs (IO) of a Programmable Controller or PLC are normally mounted in the plant. Therefore the

Foundation Fieldbus Tutorials

S Bharadwaj Reddy
In each tutorial different aspect of fieldbus technology, installation, and applications etc are covered. Much of the material from these tutorials is found in the following 12-Part Presentation Series. If

Fieldbus Analog Input Function Block

S Bharadwaj Reddy
The Analog Input (AI) function block processes field device measurements and makes them available to other function blocks. The output value from the AI block is in engineering units and

Introduction to Fieldbus Function Blocks

S Bharadwaj Reddy
Introduction A fieldbus system is a distributed system composed of field devices and control and monitoring equipment integrated into the physical environment of a plant or factory. Fieldbus devices work

HART Protocol and Fieldbus Interview Questions

S Bharadwaj Reddy
The following are the HART Protocol and Fieldbus Interview Questions listed with answers. HART Protocol and Fieldbus Interview Questions   HART Communication Protocol (Highway Addressable Remote Transducer) 1. Define HART. HART is an

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