Zvimiro uye Misiyano pakati peCAN Bhazi neRS485

CAN bhazi zvinhu:

1. International standard maindasitiri level bhazi remunda, yakavimbika kutapurirana, yakakwirira chaiyo-nguva;

2. Kurebesa kureba kureba (kusvika ku10km), kukurumidza kutapurirana mwero (kusvika 1MHz bps);

3. Bhasi rimwe chete rinogona kubatanidza kusvika ku 110 nodes, uye nhamba ye nodes inogona kuwedzerwa nyore nyore;

4. Multi master chimiro, chimiro chakaenzana chese node, zviri nyore dunhu network, kushandiswa kwebhazi rakakwirira;

5. High-real-time, kwete-inoparadza bhazi arbitration tekinoroji, hapana kunonoka kwemanodhi nepamusoro pekutanga;

6. Iyo isiriyo CAN node ichavhara otomatiki nekucheka kubatana nebhazi, pasina kukanganisa kutaurirana kwebhazi;

7. Iyo meseji ndeye pfupi furemu chimiro uye ine Hardware CRC cheki, ine yakaderera mukana wekukanganisa uye yakaderera zvakanyanya data kukanganisa mwero;

8. Zvionere otomatiki kana meseji yakatumirwa zvinobudirira, uye iyo Hardware inogona kuendesa otomatiki, ine yakakwirira kuvimbika kwekutapurirana;

9. Iyo hardware meseji kusefa basa inogona chete kugamuchira ruzivo rwakakosha, kuderedza mutoro weCPU, uye kurerutsa gadziriro yesoftware;

10. Common twisted pair, coaxial cable kana optical fiber inogona kushandiswa sekukurukurirana media;

11. Iyo CAN bhasi system ine chimiro chiri nyore uye yakakwirira mutengo wekuita.

 

RS485 zvinhu:

1. Magetsi maitiro eRS485: logic "1" inomiririrwa ne+ (2-6) V voltage kusiyana pakati pemitsara miviri;Logic "0" inomiririrwa nemusiyano wevoltage pakati pemitsetse miviri se - (2-6) V. Kana iyo interface yechiratidzo nhanho yakadzikira pane RS-232-C, hazvisi nyore kukuvadza chip cheiyo interface yedunhu, uye iyi nhanho inoenderana neiyo TTL level, iyo inogona kufambisa kubatana neTTL reketi;

2. Iyo yakanyanya data transmission rate yeRS485 ndeye 10Mbps;

3. RS485 interface inobatanidza mutyairi akaenzana uye anogashira akasiyana, ayo anowedzera kukwanisa kupikisa common mode kupindira, ndiko kuti, kupindira kwakanaka kweruzha;

4. Iyo yakanyanya kutapurirana kureba chiyero kukosha kweRS485 interface ndeye 4000 tsoka, iyo inogona chaizvo kusvika 3000 metres.Mukuwedzera, transceiver imwe chete inobvumirwa kubatanidzwa neRS-232-C interface pabhazi, kureva, single station capacity.Iyo RS-485 interface inobvumira kusvika ku128 transceivers kuti abatanidzwe mubhazi.Ndokunge, ine kugona kwezviteshi zvakawanda, saka vashandisi vanogona kushandisa imwechete RS-485 interface kuti vamise nyore network network.Nekudaro, imwe chete transmitter inogona kufambisa paRS-485 bhazi chero nguva;

5. RS485 interface ndiyo inosarudzika serial interface nekuda kwekusagadzikana kwayo kweruzha, kureba kwekutapurirana kure uye kugona kwezviteshi zvakawanda.;

6. Nekuti iyo half duplex network inoumbwa neRS485 interfaces inowanzongoda waya mbiri chete, RS485 interfaces inofambiswa ne shielded twisted pair.

Misiyano pakati peCAN bhazi neRS485:

1. Kukurumidza uye kureba: Nharaunda pakati peCAN neRS485 inotapurirwa pahupamhi hwepamusoro hwe1Mbit / S haisi kupfuura 100M, iyo inogona kunzi yakafanana nepamusoro-soro.Zvisinei, pakumhanya kwakaderera, kana CAN iri 5Kbit/S, chinhambwe chinogona kusvika 10KM, uye pakumhanya kwakaderera kwe485, chinongokwanisa kusvika 1219m (hapana relay).Zvinogona kuonekwa kuti CAN ine mabhenefiti akakwana mukutapurirana kure-kure;

2. Kushandiswa kwebhazi: RS485 inyanzvi imwe chete yevaranda, ndiko kuti, panogona kuva netenzi mumwe chete mubhazi, uye kutaurirana kunotanga nayo.Iyo haiburitse murairo, uye node dzinotevera hadzigone kuitumira, uye inoda kutumira mhinduro nekukurumidza.Mushure mekugamuchira mhinduro, muenzi anobvunza node inotevera.Izvi ndezvekudzivirira node dzakawanda kubva kutumira data kubhazi, zvichikonzera kuvhiringidzika kwedata.Bhazi reCAN imhando yevaranda vakawanda, uye node imwe neimwe ine CAN controller.Kana node dzakawanda dzichitumira, ivo vanozogadzirisa nenhamba yeID yakatumirwa, kuitira kuti data yebhazi ive yakanaka uye inokanganisa.Mushure mekunge imwe node yatumira, imwe node inogona kuona kuti bhazi rakasununguka uye rotumira pakarepo, izvo zvinochengetedza kubvunza kwemuenzi, inovandudza mwero wekushandiswa kwebhazi, uye inowedzera kukurumidza.Naizvozvo, CAN bhazi kana mamwe mabhazi akafanana anoshandiswa mune masisitimu ane yakakwirira kuita zvinodiwa senge mota;

3. Mhosho yekuona nzira: RS485 inongotaura chete chidimbu chemuviri, asi kwete data link layer, saka haigoni kuziva zvikanganiso kunze kwekunge kune mamwe mapfupi uye mamwe zvikanganiso zvemuviri.Nenzira iyi, zviri nyore kuparadza node uye kutumira data kubhazi zvakanyanya (kutumira 1 nguva dzose), iyo inoomesa bhazi rose.Naizvozvo, kana RS485 node ikatadza, network yebhazi inorembera.Bhazi reCAN rine CAN controller, inogona kuona chero kukanganisa kwebhazi.Kana kukanganisa kwakapfuura 128, ichavharwa otomatiki.Dzivirira bhazi.Kana dzimwe node kana zvikanganiso zvavo zvikaonekwa, mafuremu ekukanganisa anotumirwa kubhazi kuti ayeuchidze dzimwe node kuti data haina kururama.Ngwarirai mose.Nenzira iyi, kana node CPU chirongwa cheCAN bhazi chatiza, mutongi wayo anozozvivharira otochengetedza bhazi.Naizvozvo, mune network ine yakakwirira kuchengetedzwa zvinodiwa, CAN yakasimba kwazvo;

4. Mutengo uye mari yekudzidzira: Mutengo weCAN zvishandiso zvinenge zvakapetwa kaviri kune 485. Nenzira iyi, 485 kutaurirana kwakanyatsonaka maererano nepurogiramu.Chero bedzi iwe uchinzwisisa serial kutaurirana, unogona kuronga.Nepo CAN ichida mainjiniya epasi kuti anzwisise iyo yakaoma layer yeCAN, uye yepamusoro komputa software inodawo kunzwisisa iyo CAN protocol.Zvinogona kutaurwa kuti mari yekudzidzira yakakwira;

5. Bhazi reCAN rakabatana nebhazi remuviri kuburikidza neCANH uye CANL yezvikamu zviviri zvekubuda kweCAN controller interface chip 82C250.Iyo CANH terminal inogona chete kunge iri padanho repamusoro kana kuti yakamiswa, uye iyo CANL terminal inogona kungove yakaderera kana yakamiswa.Izvi zvinovimbisa kuti, semunetiweki yeRS-485, kana sisitimu iine zvikanganiso uye node dzakawanda dzinotumira data kubhazi panguva imwe chete, bhazi richave ripfupi kutenderera, nokudaro richikuvadza dzimwe node.Mukuwedzera, iyo CAN node ine basa rekuvhara otomatiki kuburitsa kana kukanganisa kwacho kwakakomba, kuitira kuti kushanda kwedzimwe node pabhazi kurege kukanganiswa, kuitira kuti pave nechokwadi chekuti hapazovi nematambudziko mumambure, uye bhazi richange riri mu "deadlock" mamiriro nekuda kwematambudziko emunhu node;

6. CAN ine yakakwana yekutaurirana protocol, iyo inogona kuwanikwa neCAN controller chip uye yayo interface chip, nokudaro inoderedza zvakanyanya kuoma kwehurongwa hwekuvandudza uye kupfupisa kutenderera kwekusimudzira, iyo isingaenzaniswi neRS-485 chete nemagetsi protocol.

 

Shenzhen Zhongling Technology Co, Ltd., kubvira payakavambwa muna 2013, yakazvipira kuindasitiri yemarobhoti, kugadzira, kugadzira uye kutengesa mavhiri hub servo motors uye vatyairi vane mashandiro akagadzikana.Yayo yepamusoro-inoshanda servo hub mota vatyairi, ZLAC8015, ZLAC8015D uye ZLAC8030L, inotora CAN/RS485 kutaurirana kwebhazi, zvichiteerana inotsigira CiA301 uye CiA402 sub protocols yeCANopen protocol/modbus RTU protocol, uye inogona kukwira kusvika kumidziyo gumi nematanhatu;Inotsigira kudzora chinzvimbo, kukurumidza kudzora, torque kutonga uye mamwe maitiro ekushanda, uye inokodzera marobhoti muzviitiko zvakasiyana, ichikurudzira zvikuru kusimudzira kweindasitiri yemarobhoti.