what is plc?
Answer Posted / 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 |
Post New Answer View All Answers
why we use 3 wire rtd direct wiring for temperature measurement instead of temperature transmitter like bearing temperature
how to check earthing,what is minum ohms for proper earthing
how to calibrate steam control valve in steam turbine
What is the difference between conductive lined pipe and conductive unlined pipe? Why do we see that?
Difference between ultra sonic flow meter
Specific gravity.
What is hp & mp seperator .& what is its working principle ?
send me model hpcl questions pleas..........my mail id mohideen.dharvesh@gmail.com
what should he know if he is an assitent engineer instrumentation in cement industries of experience of 10 - 15 year.
How an rtd work, and what volts/current goes to a rtd to measure the resistance?
hye SAM acn u send your e mail id, so that i can solve my query through e mail?
What is the use of each wire in three wire RTD
KAlman filter code for two dimension?
what is the input to be given in digital flow meter during the the calibration time?
Where is wet leg is used?