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Sadarwar Modbus: Mabuɗin Gina Cibiyoyin Sadarwa Marasa Tsabta
Labarai

Sadarwar Modbus: Mabuɗin Gina Cibiyoyin Sadarwa Marasa Tsabta

2024-07-12

Sadarwar Modbus: Mabuɗin Gina Cibiyoyin Sadarwa Marasa Tsabta

Bayani

Modbus wata yarjejeniya ce da aka saba amfani da ita a fannin masana'antu, wacce aka haɓaka a shekarar 1979 don ba da damar sadarwa tsakanin na'urorin sarrafa kansa. An fara aiwatar da Modbus a matsayin yarjejeniyar matakin aikace-aikace don aika bayanai ta hanyar layin serial, kuma yanzu ana iya faɗaɗa ta don aiwatarwa ta hanyar layin serial, TCP/IP, da User Datagram Protocol (UDP). Wannan takardar tana ba da cikakken fassarar aiwatar da yarjejeniyar.Hoto 4kdn

Menene tsarin Modbus?

Modbus wata yarjejeniya ce ta amsa buƙata da aka aiwatar ta hanyar dangantakar ubangida da bawa. A cikin dangantakar ubangida da bawa, sadarwa koyaushe tana faruwa a nau'i-nau'i biyu (na'ura dole ne ta fara buƙata sannan ta jira amsa), kuma na'urar da ake buƙata (na'urar babban na'ura) ita ce ke da alhakin fara kowace hulɗa. Yawanci, na'urar farko ita ce hanyar haɗin ɗan adam da injin (HMI) ko tsarin sa ido da tattara bayanai (SCADA), yayin da na'urorin sakandare su ne firikwensin, masu sarrafa dabaru masu shirye-shirye (programmable logic controllers)kamfanin plcs), ko kuma masu sarrafa sarrafa kansa na shirye-shirye (PACs). Abubuwan da ke cikin waɗannan buƙatu da amsoshi, da kuma layin hanyar sadarwa da ke aika waɗannan saƙonni, an bayyana su ta hanyoyi daban-daban na yarjejeniyar.


Hoto na 5skz

Wadanne na'urori ne ke tallafawa yarjejeniyar Modbus?


Tsarin Modbus yana da goyon baya sosai daga na'urori, waɗanda suka haɗa da masu sarrafa dabaru na shirye-shirye (PLCs), na'urorin tashar nesa (RTUs), firikwensin, masu kunna sauti, hanyoyin haɗin injin ɗan adam (HMIs), da sauran nau'ikan na'urori da yawa a fannin sarrafa kansa na masana'antu da masana'antu. Sashen Kula da Tsarin Aiki. Ana amfani da Modbus sosai kuma ya zama ma'aunin haɗin kai tsakanin na'urori da masana'antun daban-daban ke ƙera a fannoni kamar masana'antu, makamashi, sufuri, da sarrafa kansa na gini.

 

Modbus gateway wata na'ura ce da ke canza tsarin sadarwa da cibiyoyin sadarwa na tsarin sarrafa kansa na masana'antu ke amfani da shi. Tana sadarwa da na'urori masu wayo, tana tattara bayanai daga ƙananan na'urori kuma tana aika su zuwa ga Modbus gateway, tana haɗa hanyar sadarwa da babbar hanyar sadarwa ta kwamfuta, kuma tana aiwatar da tsarin Modbus tare da kwamfutocin sadarwa.


Yanayin sadarwa na Modbus


Tsarin Modbus yana da manyan hanyoyin sadarwa guda uku:

lRTU (Na'urar Tashar Nesa)

lASCII (Lambar Ma'aunin Amurka don Musayar Bayanai)

lTCP/IP (Tsarin Kula da Watsawa/Tsarin Intanet)


A cikin yarjejeniyar Modbus, Modbus TCP da Modbus RTU su ne hanyoyin sadarwa guda biyu da aka fi amfani da su. Duk da cewa an tsara su ne don sauƙaƙe musayar bayanai tsakanin na'urori, akwai wasu manyan bambance-bambance a cikin hanyoyin aiwatar da su da yanayin aikace-aikacen.


Hanyar sadarwa da sauri


Modbus TCP yana amfani da tarin yarjejeniyar TCP/IP don watsa bayanai ta hanyar hanyoyin sadarwa, yana dogara da kayayyakin sadarwa kamar Ethernet don cimma watsa bayanai mai sauri da girma.

A gefe guda kuma, Modbus RTU yana aika bayanai ta hanyar layukan serial kamar RS-485 da RS-232, waɗanda ke da saurin watsa bayanai a hankali..

 

Modbus RTU yana ƙunshe da firam ɗin bayanai a cikin ƙaramin tsarin binary, gami da filayen adireshi, lambobin aiki, bayanai, da filayen checksum. Ana watsa wannan tsari cikin inganci a cikin nau'in binary, wanda hakan ya sa ya fi dacewa da aikace-aikacen sarrafawa na ainihi ko na gida, musamman a cikin mahalli ba tare da kayayyakin more rayuwa na cibiyar sadarwa ba, kamar wuraren sarrafa kansa na masana'antu, tsarin da aka haɗa, hanyoyin sadarwa na firikwensin, da ƙananan tsarin sarrafawa.

A gefe guda kuma, Modbus TCP yana canza kowace byte na bayanan binary zuwa igiyar hexadecimal mai lamba biyu, wanda daga nan aka haɗa shi tare aka watsa shi a cikin tsarin lambar TCP. Saboda sauƙinsa, amincinsa, da kuma ingancinsa mai yawa, ana amfani da shi sosai a cikin manyan tsarin sarrafa kansa, cibiyoyin bayanai, sarrafa kansa na gini, da Intanet na Abubuwa na masana'antu, waɗanda ke buƙatar nisan sadarwa mai tsawo da buƙatun lokaci-lokaci da kwanciyar hankali don watsa bayanai.


Ayankin aikace-aikace


A fannin masana'antu, ana amfani da Modbus don haɗa kayan aiki daban-daban na samarwa da kuma cimma sa ido da kuma kula da tsarin samarwa a ainihin lokaci; A fannin makamashi, ana amfani da shi don sarrafa tsarin wutar lantarki ta atomatik, gami da samar da wutar lantarki, watsawa, da hanyoyin rarrabawa; A fannin sufuri, ana amfani da Modbus don tsarin siginar jigilar jiragen ƙasa na birane, sa ido kan yanayin abin hawa, da sauransu; A fannin sarrafa gine-gine ta atomatik, ana amfani da Modbus ga tsarin HVAC, haske, da tsaro a gine-gine.

 

Tare da haɓaka fasahar Intanet ta masana'antu da fasahar Intanet ta Abubuwa, Modbus kuma yana ci gaba da ƙirƙira da haɓakawa don daidaitawa da yanayin masana'antu masu rikitarwa da canzawa. Misali, Modbus/TCP a hankali yana zama babban ma'aunin sadarwa na Ethernet na masana'antu, kuma na'urorin ƙofa waɗanda aka gina bisa Modbus suna ba na'urorin Modbus na gargajiya damar haɗawa da hanyoyin sadarwa na zamani cikin sauƙi, wanda ke ba da damar adana bayanai da nazarin girgije.

 

A taƙaice, Modbus, a matsayinta na babbar hanyar sadarwa ta masana'antu da ake amfani da ita sosai, ta shaida ci gaban fasahar sarrafa kansa ta masana'antu kuma ta kafa harsashi mai ƙarfi don basirar masana'antu ta gaba. Tare da ci gaba da haɓaka fasaha, Modbus zai ci gaba da taka muhimmiyar rawa wajen haɓaka kirkire-kirkire da sauyi a cikin ƙungiyar masana'antu.ko kuma.