Standard Signals in Electronic Instruments Standard Signals

Every PLC platform has input modules, interfaces and further documentation on how to connect to their platforms. Read them.

List out reasons we should educate you.

Read some literature.

Nice job.

Personally, I'd have pointed him toward the internet and some independent homework.

Look at his history.

The below quoted request for instant enlightenment is typical of all of your posts here:
"Please,list out safeties where Surveyor can ask me to show him safety system/switch working or not. The systems are,Main Engine,Auxiliary Engine,Seperator,Purifier,Fire/smoke/Flame,Main Switch Board electrical breaker,Emergency generator test operation,bilge oil seperator,sewage treatment plant,Boiler,Incenerator,life boat operation and any other inbuilt system and please tell by using which tool/equipment we can simulate the system." Best regards, Joganand
I can't imagine how you can get a job anywhere while displaying a complete lack of knowledge, competence and common sense.
The internet has all the answers you seek, but nobody's going to do all your legwork and research for you.

but nobody's going to do all your legwork and research for you

That's right, your not a paid electrical consultant after all.

;)

Even if I were, I'd not do it.

This is too much like tutoring and not consulting.

No I meant that joganand is not a paid consultant.

This is the sort of information that paid consultants ask us to supply them for free (an example of this personally occurred to me only just this morning).

One can only hope, "that joganand is not a paid consultant."

Unfortunately, his history says otherwise.

I'm typing quickly, lest the site vanish, again.

Joganand,

I replied to your other post. However, this one asks one question that is different--regarding history.

A signal that ranges from 0 to maximum, such as 0-20mA or 0-10V does not allow the receiver to know if the wiring has opened. An open circuit would give a 0 signal, which would be interpreted as a valid signal and not a fault. However, with a 4-20mA or 1-5V or 1-10V signal range all would drop below this expected signal range in the event of a broken wire. This gives more security.

Finally, any current input is dependent on the total resistance of the instrument loop. The transmitter is being powered typically by a 24VDC supply. If the signal is being sensed as a 0-5 or 1-5 VDC voltage drop across a 250 ohm resistor in the receiver, then the total loop resistance cannot exceed approximately 1200 ohms. Therefore the wire gauge and length both have to be chosen with this limit in mind. And, I'm not even getting into the topics of shielding/screening, separation from power conductors, ground loops, etc.

--JMM