Answer / nilesh

Question not clear.

1.PLC has its own controller which execute the
program.Before every program run PLC read the input and
after program execution generate output accordingly.
2.If PLC I/O need to be control from operator station (
DCS/SCADA) then PLC need to be connected to OS through
serial link/Ethernet

Answer / kawa

Yes of course we can either through its own HMI or through
seiral liks with some other control system (DCS).

Answer / ashish namdev

Operation station system no have any program (programming built in Engg. Station Only which is a server also)

but operating station system is connected with same network of plc/Dcs through Ethernet or other.

than that station has a SCADA software which is connect it to server system station through IP protocol.

 than we can access or give command through Operating station.



Ashish Nmadev
Sr. Engg In Jaypee thermal power plant, Bina(MP)   

what is the meaning of GK value(fullform) in flowmeter ?

3 Answers   Essar,

---

in the boiler in the main steam line and its bypass line and the startup vent vales are only motorised valves why cant we use other types of valves such as pneumatic.

3 Answers  

---

State four different types of flow measurement.

4 Answers   ADMA OPCO,

---

Coal mill Instruments Equipments for cement plant And process diagram ?

0 Answers  

---

what happen if i install my pressure transmitter below the elevation of pipe in natural gas service. Also support your answer

3 Answers   C2C,

---

For crude application in floating roof tank, how to calibrate a DP Transmitter? How is the floating roof weight considered?

0 Answers  

---

What is impulse line size

3 Answers   IFFCO,

---

How can we use feedback signal frm rtd for monitoring and in dcs for controlling ,then which type of rtd is sutaible 2 , 3,4wire and why ?

0 Answers  

---

diff between dead wt calibrator n pressue comparator?

4 Answers   Invensys,

---

The document / drawing that is primarily used in depicting the “Bill of Materials (BOM)” of piping system is the

2 Answers  

---

how to convert transmitter milliamps output to like temp,pressure etc.....

5 Answers  

---

what is power factor?

1 Answers  

---