Icyambu cya RS485 cya metero ya Lanry ni iki?

Icyambu cy'itumanaho RS485 nicyuma gisobanura ibyambu byitumanaho.Uburyo bwo gukoresha icyambu cya RS485 buri muri bisi ya topologiya, kandi ntarengwa 32 irashobora guhuzwa na bisi imwe.Muri RS485 umuyoboro w'itumanaho muri rusange ukoresha uburyo bwo gutumanaho-shebuja-bucakara, ni ukuvuga, umushyitsi ufite imbata nyinshi.Mu bihe byinshi, imiyoboro y'itumanaho rS-485 ihujwe gusa na “A” na “B” impera za buri murongo hamwe na kabili ya kabili.Uku guhererekanya amakuru ni kimwe cya kabiri - uburyo bwo gutumanaho duplex.Igikoresho gishobora kohereza gusa cyangwa kwakira amakuru mugihe runaka.Nyuma yimikorere yitumanaho ryibyuma bimaze gushyirwaho, protocole yamakuru igomba kumvikana hagati yibikoresho byohereza amakuru kugirango impera yakira ishobore kugereranya amakuru yakiriwe, aricyo gitekerezo cya "protocole".Itumanaho protocole rifite imiterere ihuriweho na protocole, kandi ibicuruzwa byacu byose bikoresha protocole isanzwe ya Modbus-RTU.Amafaranga-485 ntarengwa yo gutumanaho ni hafi 1219m, mumuvuduko muke, intera ngufi, ntamwanya wo kwivanga ushobora gukoresha umurongo usanzwe uhindagurika-umurongo, kurundi ruhande, mumuvuduko mwinshi, umurongo muremure, ugomba gukoreshwa guhuza (muri rusange 120 ω ) RS485 umugozi udasanzwe, kandi mubidukikije bikaze bigomba no gukoreshwa ibirwanisho bigoretse-byombi bikingiwe.