RS-232: he tirohanga whānui o te rahi paerewa me ngā momo

I roto i te ao i reira e he maha nui o i'ai, i'ai, atanga. Te tautuhi ratou a kia mohio te kaiwhakamahi noa katoa he tata e taea. A, no te whakatau he tīmatanga ki te kohikohi i runga i to ratou ake rorohiko whaiaro, i reira e maha ngā pātai e pā ana ki hototahi. I teie mahana, ako tatou e te RS-232 taua atanga.

ariā

Ki te fehangahangai koe ki te meka e kore koutou e mohio ki ta ahua o te tūhono me te aha he reira hoki, na matou e matau i muri i roto i tenei. E pā ana tēnei paerewa ki te paparanga tinana, a ka whakawhanakehia rite te "hoa" atanga tukutahingakore. Nuinga o ngā wā, e mahara ana nga RS-232, tohunga whakahua te PC tauranga rangatū.

Reira na tupu i maha whakamahia ia i roto i te mara o te torotoro waea. Na kua mohiotia taua mea ki te whakawhetai katoa ki te whanaketanga o rorohiko. Kei te hono te reira ki te PC i roto i te take o te kahore ona tiketike auau raraunga, me te tukutahi ki te kahore he te pūrere i roto i te tawhiti tawhiti. Ki te fehangahangai tatou te rorohiko mo te mahi tari whakangahau ranei, kua whakakapia nga RS-232 atanga ki USB.

kōrero

I roto i te waenganui o te rau tau whakamutunga ka anga reira whanaketanga kaha o hangarau, i roto i ngā torotoro waea. Katoa kamupene e whai wāhi i roto i te hanga o etahi taputapu, kua whakawhanakehia tona kara ake mō te tuku raraunga. Nä, kua te whakamahi o taua whakaaro, kua uaua, rite reira nga raruraru ki te hototahi.

Hei whakatau i tēnei take tūturu me whakakotahi katoa kua kua e riro, i roto i te 1962 whakaritea he rōpū motuhake. Kua hanga e te reira i tūtohutanga mo te kaihanga, e i te ingoa "Manakohia Paerewa 232". Ko te no te mea i reira te mea he hiahia ki te whakawhanake i te RS-232 atanga.

Na herea whakawaehere pūāhua e i 5 ki te 8 paraire. kihai i whakatika ngaohiko tohu i runga 25 V a kahore i raro -25 V. ko reira taea ki te whakarite i nga tohu mahi, e he te tikanga e kore e tika te whakamahi. puta te tuku Raraunga i roto i rua aratau: tukutahinga me te tukutahingakore. Ngā mihi ki te katoa o te paerewa mahi whakapumautia e tano maitai no te taputapu Telecom.

whanaketanga

I roto i te noa e whitu nga tau i muri i te taketake o putanga hou timata ki te puta. RS-232C i hou kua i roto i te hononga ki te āhuatanga katoa e kua kitea i roto i tenei wa. I whakaritea e te reira ki te whakarite i te tūhono DB25 25 titi. kua waiho tenei kōwhiringa he pono "mahi i runga i to tatou mau hape," he aha e kore te huri i te roanga o te wa, a meinga ana ia hei pūtake mō ngā tau ki te haere mai.

Kua i 1983, ka reira PC mohiotia te whakamahi i tenei paerewa. timata matou ki te whakamahi i UART transceiver. Ko e taha o nga mea hou kua 4 o te tuku, e te hunga kua huaina COM-tauranga.

timata te whanaketanga o taua paerewa ki te riro whakauka. Kua mohio Manufacturers te parau tumu o te mahi i roto i taua āhuatanga, na ka anga ia ki te ngaro Association faatîtîraa. I roto i te 1986, ke te RS te ki Eia. A, no te mea kua oho te tika o kamupene ki tetahi, ko reira tukua o ngā rerekētanga o te paerewa, he tokorua i. I roto i te whānui, e kore te kahore hou, me te whakatinana i roto i te RS-232 atanga.

mahi

Ngā mihi ki tenei paerewa, ka taea ki te whakawhiti raraunga tohu motuhake ranei i waenganui i rua whakaaro, tetahi o i te mea he kāpeka, me te tuarua - kōrero. Ko ake ki te 15 mita tuku, a ka taea e te tere mōrahi tae 115200. Te mea faahiahia, he ngāwari ki te whakamahi me te hōtaka i te atanga. Kei te maha whakamahia huru ki te hiahia koe ki te roa i te tawhiti. Tohunga noa proportionally whakaiti tere.

whāinga

Kei te mohiotia te reira e te rangatū RS-232 atanga i whakamahia tuatahi e pouwhanga waea-ake ki te PC. No te mea o tenei, hohoro whiwhi ia i nga mea timatanga, i roto i te he aho motuhake "Call". Neke atu i te wa, ke te Internet Hupa tūhono me te maitai hono mā USB. tuwhanga mea ia kihai i ngaro hononga ki te rōpū atanga, na kua whakaritea e te tahi atu kaiwhakanao ki te waihanga i ō rātou whakaaro taura hototahi ki te hono ki te pūnaha. Ko te kupu, ka mohiotia e ratou kiore rorohiko ki te RS-232.

Na, ko te atu noa i roto i te pūrere tino motuhake, taputapu ahumahi me ngā pūnaha microprocessor te atanga. Ka rite ki te hua, i roto i te hou netbook pukatuhi ranei RS-232 atanga taura e kore e whakaritea puta. Ko etahi Motherboards pūnaha pahoho i tonu tenei tūhono. Ka rite ki te hua, i reira e rua mokamoka kotahi, me te poraka daisy runga i te kaupapa. Ki te kore i horihori tenei tūhono, etahi whakarato pūtahuri.

te mahi

Kei te mohiotia te reira e te huru aroturuki ko te atanga tonu-Matarua. whakawhiti te reira i raraunga hei atanga rangatū tukutahingakore. E ai ki te waea haere tohu ā-rua, i riro mai e rua ngā taumata ngaohiko. Ko te take o te kōrero tuku tenei.

Ki te whakaaro tatou ki nga tohu arorau, ka ki te "kore" ngaohiko pai fakafekau'aki, a ki te "kotahitanga" - he kino. Ki tenei hanganga whakahaeretia te rite whai whakamahi ngā he maha nui o maramara "rakau". RS-232 atanga te nuinga whai wāhi me te putanga rārangi paerewa e kore anake, engari ano hoki ara motuhake ngaahi houalotú, ki te whakahaere i te rere i te taha pūmārō me whakahaere mahi motuhake.

rārangi

Ko reira ngā e rite rawa tenei tauranga te ki te 25 hoapā momo D, whārangi. Ia he ona ake tapahia me te aronga. E ratou te ingoa tonu, me he kawenga mo te tetahi āhuatanga. Heoi tuku te ka riro tono raraunga, me te tuku o te tautuhi anō, ngaohiko pai, me te kino, te aratau tīaroaro, te tukutahitanga kaiwhiwhi, te tohu ringer, me ētahi atu

akomanga

Ki te whai tatou he pūrere kāpeka, ka ka e rite rawa ai ki te hoapā tūhono, ki te hono - te puare. Kind o rite te tūranga paerewa, engari i ētahi wā i reira he okotahi. E wehea Signals RS-232 hononga atanga ki ngā akomanga.

rauemi whai pērā i TXD, mahi ana ki te kōrero motuhake hongere rangatū, kua wehea nei ki tuatahi, me te tuarua. mahi mā te whakawhitihia mōhiohio me te te fariiraa i te reira rārangi.

momo whakahaere RTS kua te taitara whakaae kupu. Ko te tikanga i roto i nei tohu i te whakaari rārangi kōrero kōrero tīmatanga ki te tuku oro i mua tūturu. He he he piha tukutahinga. I roto i tenei aratau, tuku te taputapu tohu ki tahi i te tahi, e taea ana ki te faaohie i te whakawhiti i roto i wetewaehere.

pūtahuri

I mua i tatou mahi ki te kaitahuri, RS-232, he mea e tika ana ki te mohio i roto i te parau tumu he aha te mea te reira me te mea e hiahia ana koe. Ki te hanga mārama reira, te pūtahuri - tenei pūurutau. I roto i taua take, ki te he te tūhono kotahi te pūrere, engari e hiahia ana koe tetahi, ka taea e koe te hoko noa i te whāurutau. Ko te kupu, nga i'ai tika katoa riro e tika ana ranei, ranei noa e kore e tangohia ake rawa nui wāhi.

I roto i to tatou take, he mea ka taea ki te whakamahi i hono te taputapu e ki atanga RS-232/422/485 COM-tauranga. Ko te hua ko te paerewa wehe galvanic, tuku o te mōhiohio e wahi i raro i ngā āhuatanga uaua ki te pokanoa hiko. Ko te raruraru i roto i tenei take, ko te tika anake ki te meka e kore he nui hononga ohie, whai koe ki te whirihora i te taumata pūmanawa.

I roto i te whānui, taputapu rerekē e hiahiatia ana mō te tuku o tona hangarau motuhake raraunga. Na reira, ko te mea e tika ana ki te mahi ki te whakakotahi i te kawa ki te iriti raraunga ki te tirohanga kotahi anake, ki te te pūtahuri - e taea. Ko te mahi o tenei pūurutau ko e ko reira he urutaunga o te momo o te mōhiohio tuku e te i waenganui i etahi wahi o te pūnaha ki te hangarau motuhake.

Ko te kupu, haere te tukatuka pākete i taahiraa hōtaka. taui te hōtaka te hanganga o ngā rauemi, e kua tuku, whakamahi he kawa rerekē.

whakarōpū

Ko reira ngā e taea te āhuatanga i tetahi RS-232 pūtahuri atanga (etherne me ētahi atu) i te maha o ngā tawhā. Na, whakatau i te paerewa o te taputapu me te tikanga momo. whakaaro hoki te auau raraunga, e whakatau i te rauemi tau mōrahi i runga i te wā.

Ko te tawhā muri - ko reira taea tawhiti te tuku, e hāngai ana i runga i te tawhiti mōrahi i ia atu kōpuku, e taea te tuku mōhiohio ki waenganui ia ratou, engari ia te pupuri tona tapatahi. māngai te aho tuku e te reo, me te wahi tuku raraunga tika te. I roto i te tawhā ko te maha o "rakau" me farii, me te taea te ara iahiko tātari "konektinga" wae matua.

tauira

Ki RS-232 mahi pai i roto i te taupiri ki RS-485/422 atanga, e hiahia ana koe ki te tiki e kore e tika i te pūtahuri, me te whakahaere hōtaka. Ko reira utu te haamana'oraa e kore e whai wāhi terminals katoa, na te 10, ko te anake e toru o te tuku / ia farii i raraunga, me te tohu whenua. Ka rite ki te hua, māngai te tukanga faafariuraa iho e te raraunga moka-tukatuka i tetahi ahua ki tetahi. I tenei wāhi, puta kahore faafariuraa kawa rite tauiraa "rakau" ahau / e tauranga.