what is plc?
Answers were Sorted based on User's Feedback
Answer / srinita upadhyay
plc(programmable logic controller)is a microprocessor based
device which store data.
Is This Answer Correct ? | 124 Yes | 29 No |
Answer / guest
plc is difinds as programmable logic controller
Is This Answer Correct ? | 86 Yes | 10 No |
Answer / eswaran p
PLC ( Programmable Logic Controller ),it is introduced as
replacement of relay logic circuit, by using PLC
complicated logic can be able to make . it is having
internal memory .
Is This Answer Correct ? | 73 Yes | 6 No |
Answer / surendra gupta
plc means "programmable logic controller".
plc is a solid state computerised industrial controller
that performs discreate or sequential logic in factory
invironment. it was origenally doveloped to replace
mechanical relay, timer and counter.
plc is important to the
word of industrial automation.
Is This Answer Correct ? | 65 Yes | 5 No |
Answer / mohan
PLC is a programmmable logic controller. which is an
automation to control the actuators and/or valves to done
the process.
Is This Answer Correct ? | 50 Yes | 7 No |
Answer / guest
Programmer Logic Controller, which works hand in hand with SCADA
Is This Answer Correct ? | 67 Yes | 27 No |
Answer / laxmi udasi
PLC is used to control the operation of machine
automaltically.
Is This Answer Correct ? | 43 Yes | 5 No |
Answer / ibrahim s
PLC(Programable Logic Controller):
*It is used to emulates relay logic interlock and
provide device status.
*It works by looking at its input and depending upon
their state turning on or off its outputs.
*It control the devices according to user defined
logical
program.
Is This Answer Correct ? | 38 Yes | 4 No |
Answer / t.pitchaikannu
PLC(Programmable Logic Controller)
----------------------------------
* It is a controller which is used to control machines ,
process,or total industry
* It is programmable ,depending upon application we can
change the program ,download and run the controller.
* They are so many logics are used to write a programme
1.Ladder Logic(LD)
2.Instruction List(IL)
3.Function Block Diagram(FBD)
4.Structure Text(ST)
5.Sequential Flow Chart(SLF)
* From this name itself it used to control the
applications by programming the logic.
Is This Answer Correct ? | 32 Yes | 5 No |
It is desired to reduce effect of 50Hz pick up in a thermocouple measurement. If a third order LP filter is used for this, what should be its cut off frequency, if gain should be 0.001 at 50Hz.
Hi my friends Is any one who can assist me in knowing the typical interview questions for system engineer at General Electric pty Ltd
You are looking at the RS-485-side of an RS-232/RS-485 converter and the power supply voltage for the converter is +5V. Under idle conditions (no transmission), and assuming you have enabled the RS-485 output: what would you expect at: (a) Output A measured against output B (b) Output A measured against ground (c) Output B measured against ground
How to calculate the range of level transmitter?
A pressure Tx accuracy is 0.2%. Signal o/p is 4-20ma.span is 16 Ma.how many deviate the o/p then calibration needed
Explain any simple temperature control system.
how its work inductive proximity sensor explain briefly?
How we will check whether the proximity, which we have is either NPN or PNP, if no data sheet or manual or any details is available to us ???
Why we using 250ohm resistance during lab calibration and why not using in field in one plz define deeply???
what is the relation between flow and pressure.for example relationship between level and pressure is p = phg like that i want ans for this question.and also how to calculate orifice sizing and flow transmitter. pls some one ans for this questions.
For crude application in floating roof tank, how to calibrate a DP Transmitter? How is the floating roof weight considered?
I saw one P&ID 6" control valve has been connected with 8" process line, and 2" valve also connected in parallel with 6" valve. why the 2" valve connected in parallel, Is there any technical reason. please clarify. With Regards-Kittu