RS-422 tus qauv:
Lub npe tag nrho ntawm RS-422 tus qauv yog" Cov Hluav Taws Xob Hluav Taws Xob ntawm Ib Tug Hluav Taws Xob Hluav Taws Xob Hluav Taws Xob Cov Hluav Taws Xob Sib Txawv Digital [Circuit GG] quot; Tus txheej txheem interface txhais tau hais tias cov yam ntxwv ntawm kev sib txuas lus Circuit Court. Lub txais ntawm RS232 interface txais yuav cov kev sib nkag siab siab thiab cov tsav tsheb sib kis tau tsav tsheb muaj zog dua RS232, yog li nws tuaj yeem txuas ntau tus txais ntawm cov tib nyob rau tib kis kab, mus txog 10 nodes tuaj yeem txuas nrog. Ntawd yog, cov khoom siv (Master), thiab cov so yog cov khoom siv qhev (Salve). Cov cuab yeej qhev tsis tuaj yeem sib txuas lus, yog li RS-422 txhawb kev sib kis-rau-ntau ob txoj kev sib txuas lus. Qhov RS-422 plaub-txoj kab hluav taws xob interface sib cais sib cais xa thiab txais cov kem, yog li tsis tas yuav tswj cov ntaub ntawv kev taw qhia. Txhua lub teeb liab tsim nyog sib hloov ntawm cov cuab yeej tuaj yeem ua tiav hauv software (XON / XOFF sib tuav tes) lossis kho vajtse (ua ob khub ntawm ob zaug Stranded hlau) kom ua tiav.
Tus qauv RS-485:
RS-485 muab tau los ntawm RS-422, yog li ib feem ntawm cov hluav taws xob cov kev cai ntawm RS-485 tus qauv yog nyob rau hauv theem nrog RS-422. RS-485 tuaj yeem txais ob-hlau thiab plaub-xaim hom, thiab ob-xaim system tuaj yeem paub qhov tseeb ntau txoj kab ob txoj kev sib txuas lus.
Qhov sib txawv ntawm RS-485 thiab RS-422 yog tias nws hom hom tso zis voltage yog txawv. RS-485 yog nruab nrab ntawm -7V thiab +12V, thaum RS-422 yog nruab nrab ntawm -7V thiab +7V. Tus tsav tsheb RS-485 Muaj peev xwm siv tau rau hauv RS-422 kev siv network.
Qhov ntau kis ntawm RS-485 thiab RS-422 yog 1219 meters, thiab qhov siab tshaj plaws kis tau tus mob yog 10Mb / s. RS-485 yuav tsum muaj 2 txoj haujlwm tiv thaiv, nws cov nqi tiv thaiv yuav tsum raug sib npaug nrog cov yam ntxwv ntawm kev cuam tshuam ntawm kev xa xov cable. Tsis muaj qhov yuav tsum tau ua kom tsis txhob muaj cov tsis taus nyob rau lub sijhawm ntawm kev sib kis, uas yog, tsis muaj kev txwv tsis pub lub zog feem ntau xav tau kom nrug deb hauv qab 300 meters. Lub tshuab tso hluav taws xob tiv thaiv txuas nrog ob qho kawg ntawm tsheb npav sib kis.
