RS-232 waya: tsananguro, niznachenie, nokurondedzerwa

Kutaura zvazviri, RS-232 waya - ndiro zita mureza anotsanangura inowanikwa uye connectivity kubva PC kusvika mudziyo Data. RS - varumbidzwa mureza, rakashandurwa kuti "akakurudzira mureza", uye 232 - mhando nhamba. Zvakange muhurukuro 60s remakore rapfuura. Nhasi, munhu mutsva shanduro vomureza ichi, izvo kushandisa muna 1991 sangano telecommunication uye zvemagetsi maindasitiri, inozivikanwa se EIA / Tia-232-E. Zvisinei, ruzhinji rwevanhu vanoramba kushandisa zita "RS-232 waya," izvo zvakasimba "midzi" kuti inowanikwa.

The pamusoro inowanikwa inopa remubatanidzwa inotevera mano: DTE (Data Terminal Equipment) - iri DTE (Data Terminal Equipment), uye DCE (Data Communications Equipment) - CPD (date kutapurirwa midziyo). Under DTE Rinowanzoreva pachedu kombiyuta, uye pasi chivharo - the Modem. Kunyange zvazvo RS-232 waya rinoshandiswawo kubatanidza kune PEOM vamwe peripherals (, aidhinda negonzo, uye zvichingodaro. D.), uye kubatanidza vamwe makombiyuta kana controllers. Zvinokosha kuyeuka DCE uye DTE mazita, sezvo vari anoshandiswa mazita inowanikwa anonongedzera uye kubatsira kubata pamwe rondedzero mudziyo kunodiwa.

Pakutanga, RS-232 waya ane 25-mbambo connector mhando DB25. DTE mhando midziyo mated connector-panosangana ( "Mhamha"). Gare gare vakatanga kushandisa "vakatema-pasi" shanduro inowanikwa pamwe 9-Pin DB9. Izvi mhando waya kwakakurumbira mumazuva edu.

The wiring of RS-232 waya

Pasi chinouraya basa 9 kontaktngo mhando DB9 connector. The Pamazita inoratidza connector pinout ( "baba") date kubudiswa michina yakadai pachako kombiyuta. Rosette date kutapukirwa zano unsoldering kuitira kuti vose connectors zvabatanidzwa Via imwe waya kana zvakananga "kuonana vari kubatana".

1. Carrier wanikidza - kuvapo mutakuri maitikiro.

2. Vakagamuchira Data - vakagamuchira mashoko.

3. Transmitted Data - humboo huri zvitange.

4. Data Terminal Ready - unoda LTD.

5. Signal Ground - nhamba.

6. Data Set Read - kuda HPD.

7. Request To Send - kuchinjwa chikumbiro.

8. ClearToSend - yagadzirira kutumira.

9. Ring paakati - pamberi runhare chiratidzo.

Data vari pachishandiswa matunhu RD uye TD. The matunhu asara zvakagadzirirwa kuratidza chinzvimbo DTR uye DSR namano, hutachiwana kuzvidzora CTS uye RTS, uyewo chinzvimbo vanoratidza anul uye CD nemitsetse. Chete kana zvakabatana kuti PC achiedza zvokunze Modem, yakazara vanochengeta nengetani. Kana unobatanidza vamwe peripherals zvakadai controllers kana negonzo, shandisa redunhu haangotongi zvinodiwa chaizvo zvokushandisa. Ivo kuvimba Hardware uye Software yacho mudziyo.

Description uye michina parameters

Standard rinorondedzera zvakajeka vaifanira zvichibvira pakureba RS-232 waya - 15 metres ari mashoko yevanhu 9600 ikakuruma / s. Zvisinei, mune uchidzidzira anopupurira chezvipfuwo oparesheni kunoitwa uye pane mukuru Kureba waya. Zvinofungidzirwa kuti kushandisa imwe unshielded waya urefu anogona ngazviwedzerwe mamita 30, uye kana vachishandisa zvaitawo - kusvika 75 mamita. Uye ichi pasina kurasikirwa date unodiwa. Kana yakaderera chaizvo riri pamusoro kaviri, kuti waya pakureba ichiwedzerwa uye kaviri. Zvinokurudzirwa kushandisa waya-yakavakirwa yakakoswa-vaviri wire, pakadai, mumwe chiratidzo mutsetse ari matsva aiwanzopiwa wokushanda naye chimwe waya. Hazvina akakurudzira nokubatanidza waya nhovo vanhuwo chiratidzo.

Kazhinji ungawana RS-232- USB waya. Zviri mureza inowanikwa chimwe mugumo kuti anoshandisa imwe USB connector.