Answer / minhaz mohtashim

1. Instruction list (IL)
2.Ladder Diagram (LD)
3. Functional Block diagram (FBD)
4. Sequential Functional Chart (SFC)
5. Structured Text (ST)
6. Continuous Function Chart (CFC)

Answer / eng. kamal elbsser

They are five : Ladder daigram ,function block daigram FBD,
structure text ST,Instruction list IL and finally
Sequential function daigram SFC .

Answer / sakthivel

ladder logic, statement list, functional block,and atill
more two is there ...

Answer / ali

only fbd is there 4 dcs and others r 4 plc,they are iec 61131 languages

Answer / dipen

FOR DCS THE PROGRAMMING LANGUAGE IS CL ( CONTROL LOGIC).
DCS PROGRAMMING AND COMMUNICATION IS BASED ON THIS CL. EACH AND EVERY SECTION HAS ITS OWN CL BASED ON PROCESS REQUIREMENTS.

Answer / abhijt n. sonar

In PLC the most frequently used language is Ladder. This is
available in almost all types of PLCs but beside of this
language there are other languages as follows...
* C language
* C++ language
* FBD
* Text
* etc... specially developed by Mfg. like Automation Basic
by B&R Mfg.

But finally all program is converted into Machine language
i.e. in Binary formates...

Answer / kumaran

i think most of the DCS writing C , C++ language

how to calculate static pressure in a pipe line,when we know the DP(differential pressure) in the line, area of the pipe? please any one tell me the relation between them..?

2 Answers  

what is rtd

4 Answers   Petrofac,

Dear all... I have 1 0-400 duplex type RTD, I connected the A side to the temperature indicator and B side to the PLC panel, but when I have observed then found that The PLC side temp has the variation. and it was distub to other RTD temp also. so what can I do.

1 Answers  

I am working in a process industry, in that there are several sections devided in the SCADA screens and individual sections may START independently. But sometimes i am facing problem i.e, if section 2 Stopped by the operator immediately Section 1 or Section 3 or Section 4 is getting stopped can you expain the reason behind this?

5 Answers  

Absolute pressure is 700psi,what will be the gauge pressure?

1 Answers   IFFCO,

Why the Proximitor supply should be Negative voltage? Why should not we give Positive voltage to the Transducer?

6 Answers   Moser Baer,

Which type of diaphragm use in costic line, dm water line, natural gas line, oil line?

0 Answers  

What is a flow meter?

2 Answers  

How to find the range of DP cell Transmitter for measurement of level in closed vessel.

3 Answers   Rosemount,

What is rated capacity in Control valve

3 Answers  

what is thermo coupler and how it works

2 Answers   Tisco,

We have ZR22G-100-S-A-E-T-T--E-A/CV/F1 Model Zirconia Oxygen analyser which is Yokogawa make. I kept the analyser in Flue gas path at Air pre heater area. My plant is 7.5MW Biomass power plant. For a particular fuel, Coconut Husk which contains Sodium and Potassium chlorides iam not getting proper reading, Analyser output always Zero. I calibrated the analyser and it is OK. For Other fuels like Wood chips, Cholam waste, DOB, Groundnutshells, Ply wood waste and all iam getting actual percentage of Oxygen. What is the main reason behind this draw back?

2 Answers