what is the difference between RS 232,RS 485,RS 422, how
they different from each other
- 15 Answers
- 42378 Views
- TCS, I also Faced
- E-Mail Answers
Answer Posted / calvin
RS232 -
-- point to point
-- Distance 20m
-- Both Half duplex & full duplex
[half duplex --> Data can only be sent or received at
a time and not both same time]
[Full duplex --> data can be sent or received at the same
time]
-- An unbalanced signal --> represented by a single signal
wire where a voltage level on that one wire is used to
transmit/receive binary 1 and 0
-- min input level +/-3V
-- Very sensitive to noise
RS485
-- Multipoint
-- distance upto 1200m @ 100Kbps
-- only half duplex
-- min input level 200mV
-- less sensitive to noise
| Is This Answer Correct ? | 15 Yes | 5 No |
Post New Answer View All Answers
What is Span Error
how the arrangement of equipments done in control room
What are different types of valves?
hi friends,im an instrumentation and contol engg student,can u hlp me of suggsting barc written question paper,my id is roysuvaranjan@gmail.com, cel no.9563591747
Who to difference between analog in & analog out in dcs?
What is the difference bitween control net scaner and device net scaner
what is IEC code in cables & how to selecting cables?
hye SAM acn u send your e mail id, so that i can solve my query through e mail?
Q1: Consider part of a control loop, which excludes the transmitter, consisting of a process, a controller and a control valve which may be represented by two dead times of 0.5 min each and three exponential lags of 0.8 min., 1.0 min. and 1.5 min. respectively. We wish to express this system as an overall first order plus dead time (FOPLD) model ie gain, time constant and process dead time. (We will see later that this is often done, to simplify controller tuning). For this exercise, gain is considered to be 1.0. (A) If the transmitter is a flow transmitter whose behaviour can be described by a dead time of 0.2 min. and an exponential lag of 0.5 min. in terms of the overall dead time and overall first order lag how can the system behaviour be approximated ? Overall dead time = Overall time constant = (B) If the transmitter is a temperature transmitter with a temperature sensor in a protecting well whose behaviour can be described by a dead time of 0.7 min. and an exponential lag of 15 min. how can the overall system behaviour be approximated now? Overall dead time = Overall time constant =
What is the use of single seated valve?
Explain operation of Haskel pump.
what is 24vdc live and dry supply
There are many type of control cable like pair,core,tried, What are defination each one
i am having information technology branh ....... can i prepare for psu exam
how u calibrate pneumatic n motorized c/v?
