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.

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In RTU Panel we are having several Analogue & Digital Inputs /Outputs. We are recently facing some problems over Analog inputs , which are not updating properly (But Digital Input are updating normally) Can any one tell me from where the problem is creating , we have checked PLC CPU card, Analog Input card & we reconfigured ,But still the issue is there. Issue : 1. Sometimes Analog values are updating & sometimes not. 2. Analog values are not updating normally , showing some wrong Values 3. Total dead (0 value) Analog values are Level & flow measurement from the field instruments. (But in field the instruments are working normally & Displaying the values normally in local display unit) This problem we are facing in our Water Plant. If any one experienced this same problem or having any ideas related to our issue PLS send your valuable Answers/Replies...

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How to connect PLC to DCS ?

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what is virtual instrumentation

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What is the cv of a control valve?

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which type of filter gives the constant phase characteristics?

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