Ibikoresho byo kohereza amakuru bya RS485 bya Lanry ni iki?

Umuyoboro w'itumanaho wa RS485 ni ibisobanuro bya porogaramu z'itumanaho. Uburyo bwo gufunga imiyoboro ya porogaramu ya RS485 buri muri topology ya bisi, kandi nta ndodo zigera kuri 32 zishobora guhuzwa na bisi imwe. Muri RS485, umuyoboro w'itumanaho ukoresha uburyo bw'itumanaho bwa master-slave, ni ukuvuga, host ifite slave nyinshi. Kenshi na kenshi, itumanaho rya rS-485 rihuzwa gusa n'impera za "A" na "B" za buri interface hakoreshejwe insinga ebyiri zigonze. Ubu buryo bwo kohereza amakuru ni uburyo bwo kohereza amakuru bwa kabiri. Igikoresho gishobora kohereza cyangwa kwakira amakuru gusa mu gihe runaka. Nyuma y'uko ikoranabuhanga rishyiraho uburyo bwo kohereza amakuru, hagomba kumvikana protocole y'amakuru hagati y'ibikoresho byo kohereza amakuru kugira ngo igice cyo kwakira gishobore gusesengura amakuru yakiriwe, ari cyo gitekerezo cya "protocole". Porogaramu y'itumanaho ifite imiterere ya protocole isanzwe, kandi ibicuruzwa byacu byose bikoresha protocole isanzwe ya Modbus-RTU. Intera ntarengwa y'itumanaho ya Rs-485 ni nka metero 1219, mu muvuduko muto, intera ngufi, nta ngaruka mbi zishobora gukoreshwa ku murongo usanzwe wa twisted-pair, ahubwo, mu muvuduko mwinshi, umurongo muremure, igomba gukoreshwa ku nsinga zihuza impedance (muri rusange 120 ω) RS485, kandi mu gihe cy'impanuka zikomeye, hagomba kandi gukoreshwa insinga zikingira zivanze zikingiwe.