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3.1. Seri UART
1. RS232
Full duplex, pwen-a-pwen, plizyè mèt.
Transmisyon asynchrone estanda koòdone devlope pa Asosyasyon Endistri Elektwonik yo (EIA). Anjeneral koòdone nan RS-232 parèt nan fòm lan nan 9 broch (DB-9) oswa 25 broch (DB-25).
Pousantaj transmisyon done espesifye nan estanda RS-232-C a se 50, 75, 100, 150, 300, 600, 1200, 2400, 4800, 9600, 19200, 38400 baud.
RS-232 pwen-a-pwen koneksyon, yon pò seri ka sèlman konekte nan yon sèl periferik.
Valè nivo siyal la nan koòdone a se relativman wo, epi li fasil domaje chip la nan kous la koòdone. Paske li pa konpatib ak nivo TTL, yon sikwi konvèsyon nivo bezwen konekte ak sikwi TTL. Pousantaj transmisyon a ba, nan transmisyon asynchrone, pousantaj baud la se 20Kbps
Distans transmisyon an limite, distans transmisyon maksimòm valè estanda a se 50 pye, an reyalite li ka itilize sèlman nan apeprè 15 mèt.
2. RS-485
Mwatye duplex, mòd biwo vòt, yon kilomèt
Avèk fonksyon rezo
RS485 gen de-fil ak kat-fil koneksyon. Sistèm kat-fil la ka sèlman reyalize kominikasyon pwen-a-pwen. Li se raman itilize kounye a. Sèjousi, se metòd la koneksyon de-fil sitou itilize. Metòd fil elektrik sa a se yon topoloji otobis. Jiska 32 nœuds ka konekte sou menm otobis la.
Ann gade karakteristik RS485 anba a:
(1) Nivo koòdone a ba epi chip la pa fasil pou domaje. Karakteristik elektrik nan RS485: Lojik "1" reprezante pa diferans lan vòltaj ant de fil nan + (2 ~ 6) V; Lojik "0" reprezante pa diferans lan vòltaj ant de fil nan - (2 ~ 6) V. Nivo siyal koòdone a pi ba pase RS232, li pa fasil pou domaje chip sikwi koòdone a, epi nivo a konpatib ak nivo TTL, ki ka fasil konekte ak sikwi TTL.
(2) Pousantaj transmisyon a wo. Nan 10 mèt, vitès maksimòm transmisyon done RS485 la ka rive 35Mbps, ak nan 1200m, vitès transmisyon an ka rive jwenn 100Kbps.
(3) Bonjan kapasite anti-entèferans. Koòdone RS485 la se yon konbinezon de yon chofè balanse ak yon reseptè diferans, ak kapasite nan reziste komen entèferans mòd amelyore, se sa ki, li gen bon entèferans anti-bri.
(4) Long distans transmisyon ak anpil ne sipò. Otobis la RS485 ka transmèt plis pase 1200m (pousantaj ≤100Kbps) epi jeneralman sipòte yon maksimòm de 32 nœuds. Si yo itilize yon chip espesyal 485, li ka rive jwenn 128 oswa 256 nœuds, ak maksimòm lan ka sipòte jiska 400 nœuds.
3. RS-422
Full duplex, pwen-a-anpil, yon kilomèt
Yon total 5 liy. Paske reseptè a adopte enpedans opinyon segondè ak chofè transmisyon an gen kapasite kondwi pi fò pase RS232, li pèmèt yo konekte plizyè nœuds k ap resevwa sou menm liy transmisyon an, jiska 10 nœuds ka konekte. Yon aparèy mèt (Mèt), ak tout rès la se aparèy esklav (esklav). Aparèy esklav yo pa ka kominike, se konsa RS-422 sipòte pwen-a-anpil de-fason kominikasyon. Distans maksimòm transmisyon RS-422 a se 4000 pye (apeprè 1219 mèt), ak vitès transmisyon maksimòm lan se 10Mb / s.
lòt pwodwi nou an:
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es.fmuser.org
it.fmuser.org
fr.fmuser.org
de.fmuser.org
af.fmuser.org -> Afriken
sq.fmuser.org -> Albanyen
ar.fmuser.org -> Arab
hy.fmuser.org -> Armenian
az.fmuser.org -> Azerbaydjan
eu.fmuser.org -> Basque
be.fmuser.org -> Belarisyen
bg.fmuser.org -> Bulgarian
ca.fmuser.org -> Katalan
zh-CN.fmuser.org -> Chinwa (senplifye)
zh-TW.fmuser.org -> Chinwa (Tradisyonèl)
hr.fmuser.org -> Kwoasyen
cs.fmuser.org -> Czech
da.fmuser.org -> Danwa
nl.fmuser.org -> Olandè
et.fmuser.org -> Estonyen
tl.fmuser.org -> Filipino
fi.fmuser.org -> Finnish
fr.fmuser.org -> Franse
gl.fmuser.org -> Galisyen
ka.fmuser.org -> Georgian
de.fmuser.org -> Alman
el.fmuser.org -> Greek
ht.fmuser.org -> Kreyòl ayisyen
iw.fmuser.org -> ebre
hi.fmuser.org -> Hindi
hu.fmuser.org -> Hungarian
is.fmuser.org -> Icelandic
id.fmuser.org -> Endonezyen
ga.fmuser.org -> Ilandè
it.fmuser.org -> Italyen
ja.fmuser.org -> Japonè
ko.fmuser.org -> Koreyen
lv.fmuser.org -> Latvian
lt.fmuser.org -> Lithuanian
mk.fmuser.org -> Masedwan
ms.fmuser.org -> Malay
mt.fmuser.org -> Maltese
no.fmuser.org -> Norwegian
fa.fmuser.org -> Pèsik
pl.fmuser.org -> Polonè
pt.fmuser.org -> Pòtigè
ro.fmuser.org -> Romanian
ru.fmuser.org -> Ris
sr.fmuser.org -> Sèb
sk.fmuser.org -> Slovak
sl.fmuser.org -> Slovenian
es.fmuser.org -> Panyòl
sw.fmuser.org -> Swahili
sv.fmuser.org -> Syèd
th.fmuser.org -> Thai
tr.fmuser.org -> Tik
uk.fmuser.org -> Ikrenyen
ur.fmuser.org -> Oudou
vi.fmuser.org -> Vietnamese
cy.fmuser.org -> Welsh
yi.fmuser.org -> Yiddish
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