Ko te kaupapa matua o te whakawhitiwhiti kōrero CAN i roto i te ripanga pauna maha-upoko he papaku.

Kaituhi: Smartweigh– Taumaha Upoko Maha

Ko te pahi pūnaha CAN (CantrollerAreaNetwork), arā, te pahi pūnaha whatunga rohe ā-rohe o te papa whakahaere, kua whānuitia te whakamahinga i roto i ngā pūnaha whakahaere ahumahi, ngā hua hiko me ngā ahumahi pūoko. E rua ngā paerewa ā-motu o te kawa pahi CAN, arā, ko te ISO11898 me te ISO011519. I roto i ēnei, ko te ISO11898 he whakaritenga whakawhitiwhiti tere-teitei, ko te tere whakawhitiwhiti he 125kbps ~ 1Mbps; ko te tawhiti whakawhitiwhiti nui ake he 40m/1Mbps, e pā ana ki te pahi pūnaha whakahaere porowhita-kati.

Ko te ISO011519 he whakatakotoranga whakawhitiwhiti tere-iti me te tere whakawhitiwhiti o te 10kbps ki te 125kbps. Ko te tawhiti whakawhitiwhiti nui ko te 1Km/40kbps, nō te pahi pūnaha mahi pauna maha-upoko tuku porowhita tuwhera. Ko te maha mōrahi o ngā pūwāhi hononga i runga i te pahi CAN ko te 110 nā te mea he tūponotanga o te ātete pa o te pahi pūnaha me te ātete ki te ngaru o te pahi pūnaha.

Mena kua rite pai te tere o te pae whakawhiti me ngā tawhā matua o te moka e whiwhi ana, e tuku ana hoki, ka taea te whakaoti i te tukutahitanga pātengi raraunga o ngā pūwāhi e whiwhi ana, e tuku ana hoki. Ka taea e ia te tuku raraunga maha-upoko mā roto i ētahi tikanga pēnei i te pūwāhi-ki-pūwāhi, te pūwāhi-ki-maha-pūwāhi me ngā kaupapa whakapāho ā-ao. Ina he pūwāhi hononga kei runga i te pahi CAN hei tuku raraunga, ka tukuna ki ngā pūwāhi hononga katoa o te Ipurangi i roto i te whakatakotoranga karere.

Mō ia pūwāhi hononga, ka whiwhihia ngā mōhiohio raraunga ahakoa ka tukuna ki a ia anō, kāore rānei. Ko te tohu 11-moka i te tīmatanga o ia rōpū o ngā whakatakotoranga karere he tohu, e tautuhi ana i te kaupapa matua o te whakatakotoranga karere. He ahurei te tohu whakatakotoranga karere i roto i te pūmanawa pūnaha kotahi, ki te kore ka hē te whakawhitiwhiti kōrero; ko te tukanga katoa e whai ake nei: ina hiahia tētahi teihana ki te tuku raraunga ki ētahi atu teihana, ka tukuna e te PTM o tēnei teihana ngā mōhiohio raraunga me tana ake tohu. Kei roto te ic whakauru CAN o tēnei paetukutuku i te āhua o te whakarite i mua; ina whiwhi i te tuku mai i te pahi pūnaha, ka noho ko te āhua o te whakatakotoranga karere pana.

Ka tukuna e te ic whakauru CAN ngā mōhiohio pauna tohu raraunga maha-upoko ki tētahi whakatakotoranga karere kua whakaritea, ā, ka tukuna ki te pahi pūnaha. I tēnei wā, kei te āhua whiwhi ētahi atu teihana i runga i te pahi pūnaha, ā, ka whakautu ia teihana i roto i te āhua whiwhi ki te karere kua riro mai. Ka whakamatautauria te whakatakotoranga tuhinga, ā, ki te tukuna ki a ia anō, ka whakahaerehia te tātari mōhiohio raraunga. Me pēhea mēnā he maha atu ngā raraunga hei tuku ina wātea te pahi pūnaha? Tuatahi, ka whakaaetia te whakatakotoranga o tētahi atu karere pana, ā, ka wehewehea. Ko te tangata kei a ia te kaupapa matua ka noho ki te pahi pūnaha, ā, ka whakarērea ngā atu. Hei tauira: ka panaia hoki e te teihana 1, te teihana 2, te teihana 3 te whakatakotoranga karere ki te pahi pūnaha: 011111, 0100110, 0100111; Ka wehewehe te pahi pūnaha i te whakatakotoranga karere, he ōrite ngā mati tuatahi e rua, kātahi ka wehewehe i te mati tuatoru, ko te teihana 1. Ko te moka tuatoru ko te 1, ka whakarērea te whakatakotoranga karere, ko te teihana 2 me te teihana 3 anake ka toe, ko ngā moka tuatahi e ono o ēnei teihana e rua he ōrite, ā, ko te moka tuawhitu o te teihana 3 ko te 1, ka whakarērea hoki, ā, ko te mutunga ko te whakatakotoranga karere o te teihana 2 anake ka tiakina, kei roto ētahi atu teihana i te āhua whiwhi, ā, ehara i te mea ngāwari ki te pana i te whakatakotoranga karere i mua i te watea anō o te pahi pūnaha.

Koinei te tikanga whakatenatena o te pauna maha-upoko pahi pūnaha o te whakawhitiwhiti CAN;.

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