Answer / jignesh patel(abb)

field bus is a digital communication link between field
instruments and process control system like DCS,now a days
field bus is widely used for transmitting of signals
The type of field bus is...
1.Modbus
2.Profibus
3.Foundation fieldbus
4.CAN
5.Profinet
6.Ethernet.

Answer / patrik

field bus is the latest technology used in the process
industry for transmission of signals.it eliminates the heavy
wiring used in the traditional 4-20 mA transmission.it also
enables the manufacturers to use the latest SMART devices
avilable in the market .

Answer / faiyaz ahmad

Field bus is communication protocol which is used to communicate between the transmitter and controller like PLC and DCS Transmitting and receiving the signal through a Field bus protocol.

why we use 24 vdc in instruments mostly?

2 Answers  

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What is frequency factor in massflow meter? When using frequency output?

0 Answers   PCMIL,

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how we can calibrate level transmiiter in field?

6 Answers  

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1 Answers  

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what is the difference about HART, and 4-20mA signal?

8 Answers  

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how in the 2 - wire transmitter, 24v supply and the 4ma signal gets in the same path?

1 Answers   Yokogawa,

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Can anyone send most commonly asked interview question in Oil & Gas industry

0 Answers  

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please tel me the calibration of pneumatic controler.

0 Answers  

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How process line mpm calculation is done?

0 Answers  

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why the SCAN time of DCS is more & that of PLC is less? if the SCAN time of DCS then why we use DCS.

4 Answers  

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what do you mean by CJC (cold junction compensation).?

5 Answers   Jindal,

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what is cascade controller ?

6 Answers  

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