Motse o theko e tlaase o hlophiselitsoeng o builedsoc o bulehileng oa lipalesa

Motse o theko e tlaase o hlophiselitsoeng o builedsoc o bulehileng oa lipalesa

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Tlhaloso ea Sehlahisoa

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Tlhaloso ea Sehlahisoa

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Tlhaloso ea Sehlahisoa

Tlhahiso ea Phoso le Ts'ebetso ea data:
Moamoheli kapa lekhoba le ka sebelisa khoutu ea cheke ho fumana hore na tlhahisoleseling e fumanoeng e nepahetse. Ka lebaka la lerata la elektroniki kapa tšitiso e 'ngoe, liphoso ka linako tse ling li hlaha nakong ea tšoaetso ea tlhaiso-leseling. Khoutu ea tlhahlobo ea phoso (CRC) e ka hlahloba hore na tlhahisoleseling ea moamoheli kapa lekhoba nakong ea ho romella kapa ho amohela), sena se eketsa polokeho le katleho ea Sistimi.
CRC (Comclic ea Cyclic ea "Protocol protocol ea ModBus e na le li-byte tse peli, e leng nomoro ea binary e 16. Khoutu ea CRC e baloa ke sesebelisoa sa ho romella (ho beoa) ebe o beoa qetellong ea foreimi ea tlhahisoleseling. Sesebelisoa Haeba tse peli li sa lumellane, phoso e etsahala.
Ke lintho tse ka bang 8 feela tse sebelisoang ha li sebelisoa ha ho etsoa lipalo tsa CRC. Ho qala hanyane, ho emisa hanyane le ha ho ameha lipalo tsa CRC.

Ha boemo ba metsi ba metsi bo bona phoso e ntle ho feta phoso ea CRC, e tlameha ho romella tlhahisoleseling ho moamoheli. Boemo bo phahameng ka ho fetisisa ba khoutu ea ts'ebetso ke 1, ke hore, khoutu ea ts'ebetso e ile ea khutla ho tloha moahong oa moamoheli o romelloa ke ho amohela baeti le 128. Likhoutu tse latelang li bontša hore phoso e sa lebelloang e etsahetse.
Haeba tlhahisoleseling e amoheloang ke lekhoba le tsoang ho Mong le tsoa ho Mong le tsoa ho molaoli le liphoso tsa bakoang, e tla hlokomolohuoa ke lekhoba.
Sebopeho sa khoutu ea phoso e khutlisoa ke lekhoba le latela (ntle le khoutu ea Crc):
Khoutu ea Aterese: 1 byte
Khoutu ea Ts'ebetso: 1 byte (hanyane ka ho fetisisa ke 1)
Khoutu ea phoso: 1 byte
Khoutu ea CRC: 2 byte.

Mochini oa lekhoba o arabela ka khoutu e latelang ea phoso:
81. Khoutu ea ts'ebetso e seng molaong.
Khoutu e amoheloang ea ts'ebetso ha e tšehetsoe ke tafole ea lekhoba.
82. Bala aterese ea data e seng molaong.
Sebaka se boletsoeng sa data se kantle ho aterese e se nang palo ea tafole ea lekhoba.
83. boleng ba data bo seng molaong.

Boleng ba data bo rometsoeng ke master e amohetsoeng bo feta phapang ea aterese e lekanang ea lekhoba.

Lihlahisoa tsa k'hamphani ea rona li kenyelletsa lipalesa tsa motlakase tsa motlakase, lifofane tse batang kapa li phalla tsa mocheso, tse bulang lipalesa tse bulehileng, tse bulehileng tsa pale ea motlakase.