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Measurement, Instrumentation, and Sensors Handbook, Second Edition, 2nd Edition
book

Measurement, Instrumentation, and Sensors Handbook, Second Edition, 2nd Edition

by John G. Webster, Halit Eren
February 2014
Intermediate to advanced content levelIntermediate to advanced
1921 pages
82h 13m
English
CRC Press
Content preview from Measurement, Instrumentation, and Sensors Handbook, Second Edition, 2nd Edition
15-11Sensor Networks and Communication
15.3.2 RS-485
EIA RS-485 was made a standard in 1983, derived from the RS-422 standard. RS-485 provides for dier-
ential
tr
ansmission
of da
ta
on a pa
ir
of wi
res
am
ong
32 or mo
re
st
ations
. Li
ke
RS
-232,
th
e
st
andard
is a
la
yer
1 sp
ecication
. RS
-485
pr
ovides
fo
r
ha
lf-duplex
co
mmunication,
sin
ce
a st
ation
ca
nnot
sim
ultane-
ously
tr
ansmit
an
d
re
ceive
in
dependent
da
ta
st
reams
. Ea
ch
st
ation
in an RS
-485
sy
stem
ca
n
ha
ve
ei
ther
a tr
ansmitter
or a re
ceiver,
or bo
th
(c
ommonly
ca
lled
a tr
ansceiver)
. Mo
st
im
plementations
pr
ovide
a
transceiver. When one transceiver is transmitting, all others should be receiving (i
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Publisher Resources

ISBN: 9781439848913