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Itumatumanako kwa Modbus: Urufunguzo rwo kwubaka imihora y'inganda idafise umurongo
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Itumatumanako kwa Modbus: Urufunguzo rwo kwubaka imihora y'inganda idafise umurongo

12/07/2024

Itumatumanako kwa Modbus: Urufunguzo rwo kwubaka imihora y'inganda idafise umurongo

Incamake

Modbus ni porotokole ikoreshwa cane mu bijanye n’inganda, yateguwe mu 1979 kugira ngo bishobore guhanahana amakuru hagati y’ibikoresho vy’ubuhinga. Modbus yashizwe mu ngiro nk’umurongo w’urugero rw’ibikorwa wo gutanga amakuru biciye mu rwego rw’uruhererekane, ubu rero irashobora kwaguka kugira ngo ishirwe mu ngiro biciye mu rugero rw’uruhererekane, TCP/IP, n’umurongo w’uruhererekane w’abakoresha (UDP). Iyi nyandiko itanga insobanuro yimbitse y’ugushirwa mu ngiro kw’amasezerano.Ishusho 4kdn

None umurongo wa Modbus ni iki?

Modbus ni umurongo w’inyishu y’ibisabwa ushirwa mu ngiro biciye mu bucuti bwa shebuja n’umusuku. Mu bucuti bwa shebuja n’umuja, uguserukirana kwama kuba mu babiri babiri (igikoresho kigomba gutangura igisabwa hanyuma kigategerezwa inyishu), kandi igikoresho gisaba (igikoresho shebuja) ni co gishinzwe gutanguza ugukorana kwose. Mu bisanzwe, igikoresho nyamukuru ni igikoresho co gukorana n’umuntu n’imashini (HMI) canke uburyo bwo kugenzura no kuronka amakuru (SCADA), mu gihe ibikoresho vya kabiri ari ibimenyetso, ibikoresho bishobora gutegurwa (plcs), canke ibikoresho bishobora gukoreshwa mu buryo bwikora (PACs). Ibiri muri ivyo bisabwa n’inyishu, hamwe n’uruzitiro rw’urubuga rwohereza ubwo butumwa, bisobanurwa n’uruzitiro rutandukanye rw’amasezerano.


Ishusho 5skz

Ni ibihe bikoresho bifasha umurongo wa Modbus?


Iryo tegeko rya Modbus rishigikirwa cane n’ibikoresho, harimwo ibikoresho bishobora gukoreshwa mu buryo bubereye (PLCs), ibikoresho bikoreshwa kure (RTUs), ibikoresho bifata amajwi, ibikoresho bikora, ibikoresho bifatanya n’umuntu n’imashini (HMIs), n’ibindi bikoresho vyinshi vyo mu bikorwa vy’ubuhinga n’ivy’inganda. Igisata kijejwe kugenzura ibikorwa. Modbus ikoreshwa cane kandi yacitse de facto standard y’ugukorana hagati y’ibikoresho bikoreshwa n’abahinguzi batandukanye mu bikorwa nk’ivy’uguhingura, inguvu, gutwara abantu n’ibintu, n’ugukoresha inyubakwa.

 

Modbus gateway ni igikoresho gihindura umurongo w’itumanaho ukoreshwa n’ibibanza vy’uruja n’uruza vy’inganda. Ivugana n’ibikoresho vy’ubwenge, ikusanya amakuru ava ku bikoresho vyo ku rwego rwo hasi ikayarungika ku muryango wa Modbus, igashinga uruja n’uruza n’urubuga rwa mudasobwa rwo hejuru, kandi ikora porotokole ya Modbus n’urubuga rwa mudasobwa.


Uburyo bwo guhanahana amakuru bwa Modbus


Itegeko rya Modbus rifise uburyo butatu nyamukuru bwo guhanahana amakuru:

lRTU (Igikoresho co kure)

lASCII (Itegeko ry'Amerika ryo Guhana Amakuru)

lTCP/IP (Itegeko ryo kugenzura ubutumwa/Itegeko rya interineti)


Mu nzira ya Modbus, Modbus TCP na Modbus RTU ni uburyo bubiri busanzwe bwo guhanahana amakuru. Naho vyose vyagenewe kworohereza uguhana amakuru hagati y’ibikoresho, hariho itandukaniro rikomeye mu buryo bwo kubishira mu ngiro n’ingene bikoreshwa.


Uburyo bwo guhanahana amakuru n'umuvuduko


Modbus TCP ikoresha urutonde rw’amasezerano ya TCP/IP mu gutanga amakuru ku nzira, yizigiye ibikorwa remezo vy’inzira nka Ethernet kugira ngo ishobore gutanga amakuru yihuta kandi ku rugero runini.

Modbus RTU, ku rundi ruhande, irungika amakuru biciye ku mirongo y’uruhererekane nka RS-485 na RS-232, ifise umuvuduko wo gutanga amakuru muto cane. Ugutanga amakuru n'ibikorwa.

 

Modbus RTU ipfuka amakuru mu buryo bubiri bukomeye, harimwo ivyicaro vy'amaderesi, amakode y'ibikorwa, amakuru, n'ivyicaro vy'igenzura. Iyi nzira irungikwa neza mu buryo bwa binaire, bikaba bituma ishobora gukoreshwa mu gihe nyaco canke mu bikorwa vyo kugenzura mu karere, cane cane mu bidukikije bitagira ibikorwa remezo vy’uruja n’uruza, nk’ibibanza vy’ubuhinga bw’inganda, ubuhinga bushizwemwo, ubuhinga bwo gucungera amakuru, n’uburyo buto bwo kugenzura.

Modbus TCP, ku rundi ruhande, ihindura byte yose y’amakuru y’ibice bibiri mu murongo w’imirongo ibiri idahinduka, hanyuma ugaca ufatanywa hamwe maze ukarungikwa mu buryo bwa kode ya TCP. Kubera ko yoroshe, yizigirwa, n'igiciro kinini, ikoreshwa cane mu bikoresho vy'ubuhinga bwa none, ibibanza vy'amakuru, ubuhinga bwo kwikoresha mu nyubakwa, no kuri Internet y'ibintu vy'inganda, bisaba urugendo rurerure rwo guhanahana amakuru n'igihe kinini n'igihe nyaco n'ugushikama bisabwa kugira amakuru ashikirizwe.


Aakarere k'ikoreshwa


Mu bijanye n’uguhingura, Modbus ikoreshwa mu guhuza ibikoresho bitandukanye vyo guhingura no gushika ku kugenzura no kugenzura mu gihe nyaco ingene ibikorwa bigenda; Mu bijanye n’inguvu, ikoreshwa mu gucunga neza ubuhinga bw’inguvu, harimwo n’ugutanga ingufu, gutanga ingufu, no kuyatanga; Mu bijanye n’ivy’ugutwara abantu n’ibintu, Modbus ikoreshwa mu gutanga ibimenyetso vy’uguca mu bisagara, mu kugenzura uko imodoka zimeze, n’ibindi; Mu bijanye n’ugukoresha ubuhinga bwo kwikoresha mu nyubakwa, Modbus ikoreshwa mu bijanye n’ivy’ugukoresha ivyuma vy’umuyagankuba, ivy’amatara, n’ivy’umutekano mu nyubakwa.

 

Kubera iterambere rya Internet y’inganda n’ubuhinga bwa Internet y’Ibintu, Modbus na yo nyene iraguma ikora ibintu bishasha kandi igahindura ibintu kugira ngo ishobore guhura n’ibintu bikomeye kandi bihinduka vy’inganda. Nk’akarorero, Modbus/TCP iriko iragenda irahinduka buhoro buhoro ikigereranyo nyamukuru c’itumanaho ry’inganda rya Ethernet, kandi ibikoresho vy’irembo bishingiye kuri Modbus birashoboza ibikoresho vya kera vya Modbus bishobora kwifatanya bitagoranye n’imihora y’ubuhinga bwa none, bikaba bishoboza ububiko bw’amakuru mu gicu no gusesangura amakuru.

 

Mu ncamake, Modbus, nk’umurongo w’ivy’itumanaho w’inganda ukomeye kandi ukoreshwa cane, warabonye iterambere ry’ubuhinga bwo gukoresha ivyuma vy’inganda kandi warashizeho umushinge ukomeye w’ubwenge bw’inganda bwo muri kazoza. Kubera iterambere ry’ubuhinga rikomeza, Modbus izobandanya kugira uruhara runini mu gutuma habaho ubuhinga bushasha n’ihinduka mu gisata c’inganda .canke.