MuInternet yeZvinhu indasitiri, chero iwe uri injinjini yakamisikidzwa, iwe unowanzo kuratidzwa kune RS232, RS485, TTL aya pfungwa.
Wakasangana neiyi pfungwa paBaidu tsvaga, pazasi kuti iwe uronge iyo RS232 uye RS485, TTL interface misiyano.
Mamiriro emagetsi eiyo RS232 interface Iyo voltage yechero chiratidzo mutsara muRS-232-C hukama husina kunaka hwepfungwa.
Kureva kuti, zvine musoro "1" is -3 kusvika -15V, uye zvine musoro "0" kubva 3 kusvika 15V.RS-232-C majoini anowanzo kuenzanisirwa DB-9 plug holders, kazhinji mapulagi kumagumo eDCE uye zvigadziko kumagumo eDTE.Iyo RS-232 port yePC ndeye 9-core tsono socket.Mimwe michina yakabatana neRS-232 interface kuPC nekuti mitsara mitatu chete inodiwa, inoti "kutumira data TXD", "kugamuchira data RXD" uye "signal-to-ground GND" pasina kushandisa chiratidzo chekudzora chekufambisa. rimwe bato.
Iyo RS-232 yekufambisa tambo inoshandisa yakadzivirirwa yakamonyoroka peya.
Mamiriro emagetsi eRS485 (ikozvino anonyanya kushandiswa mainterfaces) RS485 inoshandisa musiyano wechiratidzo chisina kunaka, pfungwa ye "1" inomiririrwa nemusiyano wemagetsi pakati pemitsara miviri se -(2 kusvika 6) V, uye pfungwa "0" inomiririrwa nemusiyano wevoltage pakati pemitsara miviri se plus (2 kusvika 6) V. Chiyero chechiratidzo chechiratidzo chakaderera pane THE RS-232-C, hazvisi nyore kukuvadza interface circuit chip, uye iyi nhanho inowirirana iyo TTL level, inogona kubatana zviri nyore kune TTL dunhu.
Iyo RS-485 ine huwandu hwepamusoro hwekufambisa data hwe10Mbps.
TTL level TTL level masiginecha anonyanya kushandiswa nekuti akajairwa data anomiririra ibhinari, ine 5V yakaenzana ne "1" uye 0V yakaenzana ne logic "0", iyo inozivikanwa se ttl (transistor-transistor logic level Transistor-Transistor Logic) chiratidzo. system.
Iyi ndiyo yakajairika tekinoroji yekutaurirana pakati pezvikamu zvemudziyo unodzorwa nekombuta processor.
Musiyano uripo pakati peRS232 neRS485, TTL
1, RS232, RS485, TTL inoreva chiyero chechiyero (chiratidzo chemagetsi)
2, TTL level chiyero yakaderera mwero 0, yakakwirira nhanho 1 (pasi, yakajairwa dhijitari redunhu logic).
3, RS232 chiyero chechiyero chiyero chakanaka che 0, nhanho yakaipa ye1 (kusvika pasi, yakanaka uye yakaipa 6-15V inogona kuva, uye kunyange nepamusoro pekupikisa mamiriro).4, RS485 uye RS232 zvakafanana, asi kushandiswa kwekusiyana kwechiratidzo chekugadzirisa, kunonyanya kukodzera kune kure-kure, kufambisa kwepamusoro.
Nguva yekutumira: Jul-24-2019