Answer / sunil

First of all we maintain a communication protocol between Plc and drive then only operate i.e modbus communication

Answer / dipesh shrivastava

All plc's work under four checks
Ai - Analog I/p
Ao- Analog o/p
Di - dig I/p
Do- Dig o/p
Commands like Motor on & Off are Do's
Commands like Drive operation, control valves operations means any type of partial operations between its low range and high range will be AO
Inputs are of 3 major types , (0-5) V DC, (0-10)v DC & (4-20) mA
All types of feedbacks like proximity ( PNP,Npn ) then feebbacks like actuator open/close, Motor on/off/trip, Feeder healthy/not healthy will be Digital inputs

what is the meaning if the control valve CV is 27,in terms of selecting procedure?

2 Answers  

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Why grounding is necessary? Give example with diagram.

0 Answers   Bright Point, DS Group,

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why we use condesiate parts before tranmitters?

3 Answers  

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What is inside the PLC panel? How does instruments communicate to DCS computer via PLC? What is the type of wiring in PLC connections? Please answer... Thanks

1 Answers  

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can you provide me full detail about instrumentation in ONGC??

0 Answers   BRML, ONGC,

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how to use level tranasmitter in closed tank application.?

3 Answers   Dalkia,

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Can anyone explain in a simple way the difference between DCS and PLC?

7 Answers   Honeywell,

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What is 1:1 redundancy ?

0 Answers  

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Can anybody tell which type of quections are asked in interview for projects? plz give its urgent.....!

2 Answers  

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what is temperature compensation?

1 Answers  

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Pl send the model question paper of mahagenco account officer post

0 Answers   MahaGenco,

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Why are the uses 24vdc in industries

0 Answers  

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