what is the deference bitween DCS and PLC SCADA HMI System for Power Process

what is the deference bitween DCS and PLC SCADA HMI System
for Power Process Industry.

Question Posted / sree

1 Answers
8448 Views
UltraTech, I also Faced
E-Mail Answers

what is the deference bitween DCS and PLC SCADA HMI System for Power Process Industry...

Answer / ramesh

DCS:- Actually DCS is used for redudancy ,it will have two controllers with master and slave concepts with communicating to the slave nodes and every nodes will be communicating with the particular node addresses.It will have larger no of analog I/o but in PLC is best for larger no DI/DO s,so in power industries we will use larger no of AI/AO s ,so we are going for DCS,and moreover in DCS the scanning time and the memory speed will be greater when compared with the PLC.We can use larger no of inputs and outputs in dcs whereas in PLC we cant use larger no because of lack in redudancy controller.So,in process industries if one controller is tripped then the second controller will take in to account and the plant will not get tripped.

Is This Answer Correct ?

9 Yes

9 No

Post New Answer

More Instrumentation Interview Questions

what is the diffrence between LCN and UCN

2 Answers

3. Differentiate between ultrasonic flowmeter and radar type flow meter.

0 Answers

Why shield is not connected at both end.

5 Answers

how to calibrate absolute pressure transmitter

7 Answers ABB,

what is modbus,profibus,fieldbus

2 Answers

what sud u do if u dont get feedback from control valve?

1 Answers Siemens,

We have a Yokogawa Micro-XL DCS, which is having around 300 I/O, but whenever there is any wire gets grounded in field, the 24v supply to all loops gets dipped & all the indications at DCS goes to IOP(shows input open), at present we have fixed 500mA fuses in all the lines but which does not working. Does it required to replace with lower amps fuse, then how much or is there any other solution for this.

2 Answers

I am a electronics and instrumentation fresher trying for a job in IT sector. what do need to prepare for the interview?

2 Answers

In a class of 150 students, 40 passed in Social Studies, 90 passed in Science and 30 failed in both the subjects. vi)How many students passed in at most one subject among Science and Social Science?

7 Answers CAT, CGI, Cipla, KHK, Visa,

what is the essential difference between DIODE and SCR in term of application.

2 Answers ADMA OPCO,

how to convert % to ma

1 Answers Flour Tech Engineers (P) Ltd, Techint,

Yokogawa mass flow meter shows negative reading...what r the main causes for this problem?...

3 Answers IOCL,

For more Instrumentation Interview Questions Click Here