Answer / waqas

LCN: Local Control Network is the Network Were number of UCN
(Universal Control Network)are Connected

UCN: Universal Control Network Were the Single DCS,PLC,FSC
etc..are Connected

These number of UCN's with DCS,PLC,FSC etc.are then
Connected to LCN and through LCN to all Server.
by waqas niazi to faran ashraf

Answer / anugrah nagar

LCN:It is called as Local control network.it is based on
Token passing Technology.Its speed is 5MBPS.LCN is used for
connect the system Network like PC,server with the help of
MAU assembly or etc.

UCN:-It is called as Universal control network.it is based
on Token passing Technology.Its speed is 5MBPS.UCN is used
for connect the Process Network like DCS,PlC Controller etc
with the help of UCN TAP assembly with the help of RG-6
coaxial cable(Drop Cable) or RG-11 coaxial cable(Trunk
Cable).RG-56 cable is used to connect NIM TO ucn CONTROL
NETWORK

how many type of plug are used in pneumatic control valve,name them.

2 Answers   Godrej,

---

what is protonics how it is differ from electronics

1 Answers  

---

Explain any simple temperature control system.

3 Answers   HGJ, L&T,

---

why use 50% lel methane gas concentration for gas detector calibration instead of 60% lel gas concentration whereas the hi alarm set at 60% lel.

0 Answers   ONGC,

---

how many type conductivity sensor ?

0 Answers   Process Automation,

---

what is formula mv convert to temperture

4 Answers   Sterlite,

---

what is the usage of QDV & VOLUME BOOSTER.

2 Answers   ADMA OPCO,

---

Generally in which location ( JB or IO card or DCS) the thermocouple compensation is done.Also where they measure the atmosphere temp ( for compensation) in JB OR DCS panel? How they compensating that atmosphere temp? is any circuit for that ( like in rtd wheatstone bridge)?

3 Answers  

---

i want to Measure the Difference pressure of Packed distillation Column of height 3 mtr. h.p. side connected to bottom & L.P. side connected to the top , so tell me what will be THE URV & LRV of that D.P. transmitter?

5 Answers  

---

what is plc?

27 Answers   HPCL, KRL, Noor Company, Petrochemicals, SS Automation,

---

What is the function of a diaphagram

5 Answers  

---

Why we are using thrust bearing at turbine side?

3 Answers   Edac,

---