what is the difference between RS 232,RS 485,RS 422, how
they different from each other

Answer Posted / binu

RS232 is for a shorter distance i.e around 45 ft.
RS485 is for longer distance. Can work fine for around
1.5Kms

Is This Answer Correct ?    105 Yes 19 No



Post New Answer       View All Answers


Please Help Members By Posting Answers For Below Questions

what is wave length were using ?

1478


Definition of reverse and acting controllers:

1830


the output of the common trasmitter protocol in qatar gas are the following

1560


pls provide me syllabus and old question paper of instrumentation engineering for GET(JSPL)

1846


what is sil (safety integrity level

2198






In turbine what does term CDP, NH, HSSOC means.

1341


Isometric drawings are generated during _________________ phase of a project

1617


What is the reason PT speed not incresed in gas turbine?

1908


if in a level tx height is given, how u calculate the ranges of the tx?

6394


what is the usage of QDV & VOLUME BOOSTER

1772


how works encoder in plc

1587


If i have 4 Allen Bradely make RS logix 5000 PLC and for viewing that we are using 4 RS view SCADA for 4 different packages. Now, I will want to view two packages on only one SCADA. Then how i will do it?

1830


Why does a pressure gauge installed on reactor, doesn't have any vent line below to release the pressure? Is it any kind of designing mistake or it actually does not require any vent line? And if it does not require any vent line below it then how we are gonna release the pressure built inside the pressure gauge?

1718


We Have Two Field bus Pressure Transmitters of Different Sensor Range (I.E One is of Lower range and Another is of Higher Range).Is same Process Line. My Question is Can i provide Saturation Limit to my field Bus Transmitter as We can provide Saturation current limit to HART Instruments. As During Low Pressure Both Working OK ,But During High Pressure, transmitter with Lower sensor range Goes to Fault mode as Beyond its Sensor Limit it can Measure, So may I provide Saturation point Some where to Suppress This Fault during High Pressure.

1142


Please send me the sample question of Instrumentation of hpcl/iocl exam. my mail id hihi_kiholo@rediffmail.com

2698