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Lumikizanani Tsopano

Mafotokozedwe Akatundu

Zizindikiro Zogulitsa

Kuyika & Kutumiza

Mafotokozedwe Akatundu

Zizindikiro Zogulitsa

Mtundu: Bai Chuang

Kuyika & Kutumiza

Kugulitsa Units

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Mafotokozedwe Akatundu

Chidziwitso cholumikizirana cholakwika ndi kukonza deta:
Wothandizira kapena kapolo angagwiritse ntchito nambala ya cheke kuti adziwe ngati chidziwitsocho ndicholondola. Chifukwa cha phokoso lamagetsi kapena kusokonezedwa kwina, zolakwa nthawi zina zimapezeka pakutumiza chidziwitso. Khodi yolakwika (CRC) imatha kuona ngati chidziwitso cha omwe amalandira kapena cholakwacho chimatha kutayidwa (mosasamala kanthu) kachitidwe.
Khodi ya CRC (Drimesant Cyclic Cyclic) ya protocol yolumikizirana ya Modbus ili ndi 2 ma bytes, omwe ali nambala 16-bin. Khodi ya CRC imawerengeredwa ndi kutumiza kwa chipangizocho (chotsani) ndikuyika kumapeto kwa chidziwitso chotumizidwa. Chipangizocho (Kapolo) chomwe chimalandira chidziwitso chimayankhidwa Ngati awiriwo safanana, cholakwika chimachitika.
Ma bits 8 okha ndi omwe amagwiritsidwa ntchito pochita kuwerenga kwa CRC. Kuyambira pang'ono, siyani pang'ono komanso kukhazikika pang'ono kuwerengera kwa CRC.

Madzi a madziwo akamapeza cholakwika china kupatula cholakwika cha CRC Code, iyenera kutumiza chidziwitso kwa omwe amawapeza. Malo apamwamba kwambiri a ntchito ndi 1, ndiye kuti, nambala ya ntchito yomwe yabwerera kuchokera kwa kapoloyo ndi nambala yomwe imatumizidwa ndi yotumizidwa ndi 128. Manambala otsatirawa akuwonetsa kuti cholakwika chosayembekezeka chidachitika.
Ngati chidziwitso cholandiridwa ndi kapolo wochokera kwa Mbuye chimalakwitsa cha CRC, chidzanyalanyazidwa ndi kapolo.
Mtundu wa nambala yolakwika yomwe yabwerera ndi kapoloyo ali motere (kupatula CRC Code):
Nambala ya adilesi: 1 byte
Khodi ya Ntchito: 1 Byte (pang'ono kwambiri ndi 1)
Khodi yolakwika: 1 Byte
Code ya CRC: 2 ma bytes.

Makina a kapolo amayankha ndi nambala yotsatirayi:
81. Khodi Yosaloledwa.
Nambala yolandiridwayo siyothandizidwa ndi gulu la kapolo.
82. Werengani adilesi yosavomerezeka.
Malo omwe adatchulidwa ali kunja kwa njira yowerengera ya akapolo.
83. Mtengo Wosaloledwa.

Mtengo wa data wotumizidwa ndi wolandila uja umapitilira zingapo za adilesi yofananira ya kapolo.

Zogulitsa zazikulu zimaphatikizapo maluwa a electromagnetic, ozizira akupanga kapena maluwa otentha, otsegulira maluwa ozizira kapena maluwa ozizira.