Embonini Yezinto Eziku-inthanethi, inqobo nje uma ungunjiniyela oshumekiwe, ngokuvamile uzovezwa ku-RS232, RS485, TTL le mibono.
Ingabe uhlangabezane nalo mqondo ekusesheni kwe-Baidu, ngezansi ukuze uhlele i-RS232 ne-RS485, umehluko wesixhumi esibonakalayo se-TTL.
Izici zikagesi zesixhumi esibonakalayo se-RS232 I-voltage yanoma yimuphi ulayini wesiginali ku-RS-232-C iwubudlelwano bokunengqondo obungebuhle.
Okusho ukuthi, okunengqondo "1" ngu -3 kuya -15V, futhi okunengqondo "0" isuka ku-3 kuya ku-15V.Izixhumi ze-RS-232-C ngokuvamile ziyizibambi zepulagi ze-DB-9 ezinemodeli, ngokuvamile zixhunywa ekugcineni kwe-DCE namasokhethi ekugcineni kwe-DTE.Imbobo ye-RS-232 ye-PC iyisokhethi yenaliti engu-9-core.Amanye amadivaysi axhunywe kusixhumi esibonakalayo se-RS-232 ku-PC ngenxa yokuthi kudingeka imigqa yokuxhumana emithathu kuphela, okungukuthi “thumela idatha ye-TXD”, “i-receiving data RXD” kanye ne-“signal-to-ground GND” ngaphandle kokusebenzisa isignali yokulawula ukudlulisa elinye iqembu.
Ikhebula lokudlulisa i-RS-232 lisebenzisa ipheya elisontiwe elivikelekile.
Izici zikagesi ze-RS485 (izixhumanisi ezisetshenziswa kakhulu manje) I-RS485 isebenzisa ukuqondana okunegethivu kwesignali ehlukile, ingqondo ethi “1″ imelelwa umehluko kagesi phakathi kwemigqa emibili njengokuthi -(2 kuya ku-6) V, kanye ne-logic ethi “0″ imelelwa umehluko we-voltage phakathi kwemigqa emibili njenge-plus (2 kuya ku-6) V. Izinga lesignali yesixhumi esibonakalayo liphansi kune-THE RS-232-C, akulula ukulimaza i-chip yesekethe yesixhumi esibonakalayo, futhi leli zinga liyahambisana izinga le-TTL, lingaxhunywa kalula kwisekethe ye-TTL.
I-RS-485 inezinga eliphezulu lokudluliswa kwedatha elingu-10Mbps.
Izinga le-TTL amasignali ezinga le-TTL asetshenziswa kakhulu ngoba izethulo zedatha ezijwayelekile zihamba kanambambili, ezine-5V elingana ne-logic “1″ kanye ne-0V elingana ne-logic “0”, eyaziwa ngokuthi isiginali ye-ttl (transistor-transistor logic level Transistor-Transistor Logic) uhlelo.
Lobu ubuchwepheshe obujwayelekile bokuxhumana phakathi kwezingxenye zedivayisi ezilawulwa iphrosesa yekhompyutha.
Umehluko phakathi kwe-RS232 ne-RS485, TTL
1, RS232, RS485, TTL ibhekisela ezingeni elijwayelekile (isignali kagesi)
2, izinga lezinga le-TTL lisezingeni eliphansi elingu-0, izinga eliphezulu lingu-1 (umhlabathi, i-digital digital circuit logic).
I-3, izinga lezinga le-RS232 liyizinga elihle lika-0, izinga elibi lika-1 (phansi, elihle nelibi elingu-6-15V lingaba, futhi ngisho nesimo sokumelana okuphezulu).I-4, i-RS485 ne-RS232 ziyefana, kodwa ukusetshenziswa kwe-logic yesignali ehlukile, efaneleka kakhulu ekudluliseni okude, okuhamba ngesivinini esikhulu.
Isikhathi sokuthumela: Jul-24-2019