Modbus protocol mutauro wepasirese unoshandiswa mumagetsi controllers.Kuburikidza neiyi protocol, vatongi vanogona kutaurirana kune mumwe nemumwe uye nemimwe michina panetiweki (senge Ethernet).Yakava chiyero cheindasitiri yepasirese.Iyi protocol inotsanangura mutongi anoziva nezve meseji chimiro chiri kushandiswa, zvisinei netiweki yavanotaurirana pamusoro payo.Inotsanangura kuti mutongi anokumbira sei kupinda kune mamwe maturusi, maitiro ekuita zvikumbiro kubva kune mamwe maturusi, uye maitiro ekuona nekunyora zvikanganiso.Iyo inotsanangura iyo meseji domain schema uye yakajairwa fomati yezviri mukati.Paunenge uchitaurirana pamusoro peModBus network, iyi protocol inotarisa kuti mutongi wega wega anofanirwa kuziva kero yemudziyo wake, kuziva mameseji anotumirwa nekero, uye kuona kuti ndezvipi zviito zvekuita.Kana mhinduro ichidikanwa, mutongi anogadzira meseji yemhinduro uye anoitumira achishandisa ModBus.Pane mamwe manetwork, mameseji ane Modbus protocol anoshandurwa kuita furemu kana mapaketi zvimiro zvinoshandiswa panetiweki iyoyo.Shanduko iyi inowedzerawo network-chaiyo nzira yekugadzirisa kero dzechikamu, nzira dzenzira, uye kuona kukanganisa.Iyo ModBus network ine muenzi mumwe chete uye traffic yese inofambiswa naye.Iyo network inogona kutsigira kusvika ku247 kure kure vatariri vevaranda, asi iyo chaiyo nhamba yevaranda vanotsigirwa inotsigirwa zvinoenderana nemidziyo yekutaurirana inoshandiswa.Uchishandisa iyi sisitimu, PC yega yega inogona kuchinjana ruzivo neyepakati inomiririra pasina kukanganisa PC yega yega kuita mabasa ayo ekutonga.
Pane nzira mbiri dzekusarudza kubva muModBus system: ASCII (American information exchange code) uye RTU (Remote Terminal Device).Zvigadzirwa zvedu zvinowanzo shandisa RTU modhi yekutaurirana, uye imwe neimwe 8Bit byte mumeseji ine maviri 4Bit hexadecimal mavara.Kubatsira kukuru kweiyi nzira ndeyekuti inogona kuendesa data rakawanda pachiyero chimwe chebhaud pane iyo ASCII nzira.
Nguva yekutumira: Jul-22-2022