Answer / sivasankari

SCADA is an abbreviation for Supervisory Control and Data
Acquisition .

DCS stands for Distributed Control System.

Normally, a SCADA system will get the data from a RTU
(remote terminal unit). A RTU runs independently, except
for some control from the central supervisory system such
as fire fighting, emergency shut-down (i.e water & oil
pipelines). The communication path will be through a GSM,
wireless technology, etc...

For a DCS system, it controls the process as a stand-alone
system. It has the control loops built into it's own
controller. The communication path will be through
something like a LAN high-speed Ethernet, or other
communications network. DCS is a single unit, or a group of
local units

Answer / sam

SCADA is nothing but the HMI,which need to communicate with
the controller and then controler will comunicate with the
field instruments.


DCS(Controller+SCADA) its self have a controller,its
directly commincate to the field instrument.

Answer / rajesh kumar

scada is Supervisory control &data acquisition system
scada is a mimic view of a plant through which we can
monitor the field process parameters from the central
control room

Dcs is distributed control system
In this the whole system is distributadly controlled.
the whole system is divided into sub systems and controlled

Answer / yogesh patel

Scada:- is software. it is not use alone in the field
without control hardware.And it is Display unit.
DCS:- is different thing which is redudant system and also
has controller and Display unit.

Answer / sks

Both SCADA & DCS are control & monitoring systems for any
process, but the basic difference is in their architecture.
SCADA can be considered as a subset of DCS in terms of
electronic architecture.

Answer / jj

WITH DCS V CAN CONTROL AND MONITOR TH PROCESS BUT INCASE OF
SCADA V CANT CONTROL THE PROCESS V CAN ONLY ABLE TO MONITOR

Answer / gayathri

Scada = Display Unit.

DCS = Controller with the Display unit.

Answer / vijay krishna

dcs is an electronic unit which performs the task
according to our programme.all inputs are given to it and
it delivers the output according to our logic written.

where as scada is just a software which will take the
inputs and outputs from dcs and shows in a pictorial form
which we have to develop it is only to moniter for the
process control.

what is the diffrene between DCS System and PLC System

5 Answers  

How can SmartPlant Instrumentation users take advantage of these global services?

1 Answers  

Control valve question what is the meaning of cauge.?what is the use of cauge?

1 Answers  

I am manjunath having exp in maintenance of chemical plants,know i want to do a design course INTOOLS,after doing design course can we get jobs in design field.sinve i dont have design exp..

0 Answers  

what is vibration a part of proceess variable? if vibration is a part variables then how we minimize the actual vibration on machine on load,? vision of instrumentation contrl plz ans me IPGDL interview question

0 Answers  

what is the reset offset and control system in instrumentation

0 Answers   ABB,

how to check electrical health of vibration probe?

1 Answers  

What is Cavitation?

2 Answers   Gujarat Borosil,

two common seiling liquid used in seal pots are:

1 Answers   Thermax,

1. What means HART communicator / where it is used / how to use it? 2. Types of Thermocouples and its temperature ranges / output of thermocouple? 3. Types of RTDs and its temperature ranges / output of RTD? 4. Idea about Temperature Transmitters? 5. Difference between Analog and Digital signals? 6. Difference between “2 wire” and “4 wire” system / instruments? 7. Difference between “Potential” and “Potential free” contact? 8. Types of flow meters / transmitters? 9. Types of level transmitters? 10. Difference between “Power/Control” cable and “Instrument” cable? 11. What means “shield” and “screen” in cables / how it is useful? 12. Draw a schematic of closed loop circuit of flow / level / pressure / temperature? 13. Idea about calibration of Control valve / positioned / I/P? 14. How to bypass a digital/analog signal in PLC/DCS by hardwire and software?

6 Answers   JSL,

in the flow caluclation k value how to caluclate.mass flow & volum flow.

1 Answers  

why we cant transmit the dc current easily

1 Answers