Yini interface ye-RS-485? Yini izici zayo uma kuqhathaniswa ne-Rs-2322-C interface? Ngenxa yokubukeka kusenesikhathi kwe-Rs-232-C ejwayelekile, kunamaphutha athile athile, ikakhulukazi kufaka phakathi amaphuzu alandelayo alandelayo: (2) Izinga lokudlulisela liphansi. Ekudluliseleni i-asynchronous, isilinganiso se-baud singama-20kbps. (3) I-interface isebenzisa umugqa wesiginali kanye nomugqa wokubuya wesiginali ukuze wakhe ifomu elijwayelekile lokuhambisa indawo. Lokhu kudluliswa komhlaba okuvamile kuthambekele ekuphazanyisweni kwemodi ejwayelekile, ngakho-ke ukumelana nokuphazanyiswa komsindo kubuthakathaka. (4) Ibanga lokuhambisa lilinganiselwe. Inani elijwayelekile lebanga eliphakeme lokuhambisa lingamamitha angama-50, kepha lingasetshenziswa kuphela kumamitha angama-50. Uma ubheka ukushiyeka kwama-Rs-23232-C, amanye amazinga amasha abonakalayo avele, futhi ama-Rs-485 angenye yazo. Inezici ezilandelayo: 1. Izici zikagesi ze-RS-485: I-Logic "1" imelelwa umehluko wamandla kagesi phakathi kwezintambo ezimbili njenge + (2-6) v; I-Logic "0" imelelwa umehluko we-voltage phakathi kwale migqa emibili- (2-6) v. Izinga lesiginali eliphansi liphansi kunaleso se-Rs-232-c 2. Izinga lokudlulisa ledatha eliphakeme kakhulu le-RS-485 liyi-10 MB PS3. Isibonisi se-RS-485 siyinhlanganisela yokushayela okulinganiselayo kanye nokwehlukanisa okuhlukile, okuthuthukisa amandla okulwa okujwayelekile ukuphakama, okungukuthi, amandla okulwa anti-nomsindo alungile. 4. Inani elijwayelekile lebanga lokuhambisa eliphakeme lesibonisi se-RS-485 esibonakalayo lingamamitha angama-4,000, angafinyelela kumamitha ayi-3,000. Ngaphezu kwalokho, isikhombimsebenzisi se-Rs-232-C sivunyelwe kuphela ukuxhuma i-transceiver eyodwa ebhasini, okungukuthi, amandla wesiteshi esisodwa. Isikhombimsebenzisi se-Rs-485 sivumela ukuxhumana okufika ku-128 transceivers ebhasini. Lokho wukuthi, inekhono lesiteshi esiningi, ukuze abasebenzisi bakwazi ukuthola kalula inethiwekhi yemishini ngokusebenzisa isibonisi esisodwa se-RS-485. I-Interface ye-RS-485 iyisibonisi esithandwayo se-serial ngenxa yokuphazanyiswa kwayo okuhle kwe-anti-nomsindo, ibanga elide lokuhambisa kanye namandla esitemvane amaningi. Ngoba i-Half-duplex yenethiwekhi eyakhiwe ngezindawo ezingama-RS485 ngokuvamile zidinga izintambo ezimbili kuphela, i-RS485 ihlangana konke okuvinjelwe okusontekile okusontekile. Isokegi le-9-Core Plug se-DB-9 lisetshenziselwa isixhumi se-RS485 esibonakalayo, i-DB-9 (Hole) esibonakalayo nge-terminal ehlakaniphile Rs485, kanye ne-DB-9 (PIN