RS-232 na USB: description, niznachenie, bayani dalla-dalla

Tsananin magana, RS-232 na USB - shi ne sunan da misali cewa ya bayyana dubawa da kuma connectivity daga PC zuwa na'urar data. RS - shawarar misali, fassara a matsayin "shawarar misali", da kuma 232 - da irin lambar. Yana da aka ci gaba a cikin 60s na karshe karni. Yau, wani sabon version na wannan misali, wanda soma a shekara ta 1991 ƙungiyar ta na sadarwa da kuma lantarki masana'antu, da aka fi sani da EIA / Tia-232-E. Duk da haka, mafi yawan mutane ci gaba da yin amfani da sunan "RS-232 na USB," wanda da tabbaci "kafe" da ke dubawa.

The sama dubawa na samar da wani fili daga cikin wadannan na'urorin: DTE (Data Terminal Boats) - da DTE (Data Terminal Boats), da kuma DCE (Data Communications Boats) - CPD (watsa bayanai kayan aiki). Karkashin DTE yawanci na nufin wani sirri kwamfuta, da kuma karkashin hula - da modem. Ko da yake RS-232 na USB ana amfani haɗi zuwa PEOM sauran peripherals (printer, linzamin kwamfuta, da sauransu. D.), Kuma a haɗa zuwa wasu kwakwalwa ko masu kula. Yana da muhimmanci a tuna da DCE da DTE zane-zane da, kamar yadda suke amfani da sunayen dubawa sakonni da kuma taimaka a magance da bayanin irin na'urar bukata.

Da farko, RS-232 na USB yana da wani 25-fil connector irin DB25. DTE irin na'ura mated connector-soket ( "inna"). Daga baya suka fara amfani da "yanke-sauka" version na ke dubawa tare da 9-pin DB9. Wannan irin na USB ne na kowa a cikin kwanaki.

A wayoyi na RS-232 na USB

Kasa da m aiki 9 kontaktngo irin DB9 haši. Jerin nuna connector pinout ( "daddy") data aiki kayan aiki kamar wani sirri kwamfuta. Rosette watsa bayanai na'urar unsoldering haka cewa duka haši suna shiga via wani na USB ko kai tsaye "lamba a lamba".

1. Jigilar Tsinkayo - gaban m mita.

2. Samu Data - samu bayanai.

3. daukar kwayar Data - da bayanai da ake daukar kwayar cutar.

4. Data Terminal Ready - shiri LTD.

5. Signal Ground - total.

6. Data Kafa Karanta - shirye HPD.

7. Request Don Aika - canja wurin request.

8. ClearToSend - shirya aikawa.

9. Zobe nuna alama - gaban kira sigina.

Data ake daukar kwayar cutar ta hanyar haihuwarka RD da TD. Sauran haihuwarka aka tsara don nuna matsayi DTR da DSR na'urorin, baza iko CTS da RTS, kazalika da matsayi nuni RI da CD Lines. Kawai a lokacin da aka haɗa a PC ta amfani da wani waje modem, cikakken sa na sarƙoƙi. Lokacin da za a haɗa da sauran peripherals kamar masu kula ko linzamin kwamfuta, yi amfani zabe kewaye da ake bukata domin takamaiman kayan aiki. Sun dogara ne a kan hardware da software na na'ura.

Description da fasaha sigogi

Standard fili ma'anar matsakaicin yiwu tsawon na RS-232 na USB - 15 mita a data kudi na 9600 bit / s. Duk da haka, a yi shi tabbatar da cewa barga aiki aka samu da kuma a wata mafi girma tsawon na waya. An yi imani da cewa aikace-aikace na wani unshielded na USB tsawon za a iya ƙara zuwa mita 30, da kuma lokacin da yin amfani da wani kare - har zuwa 75 mita. Kuma wannan ba tare da rasa data kudi. Idan wani m gudun ne game da sau biyu, da na USB tsawon aka ƙara da ninki biyu. An shawarar yin amfani da wata na USB-tushen Twisted-biyu na USB, a cikin irin wannan hali, kowane siginar line ne guda biyu tare da na kowa waya. An ba da shawarar hada da na USB garkuwa da na kowa alama.

Za ka iya sau da yawa sami RS-232- kebul na USB. Yana da wani misali dubawa a kan daya karshen cewa yana amfani da kebul na haši.