Kodi njira yolumikizirana ya Modbus-RTU ya Lanry flow mita ndi chiyani?

Modbus protocol ndi chilankhulo chapadziko lonse lapansi chomwe chimagwiritsidwa ntchito poyang'anira zamagetsi.Kudzera mu protocol iyi, owongolera amatha kulumikizana wina ndi mnzake komanso ndi zida zina pamaneti (monga Ethernet).Zakhala muyezo wamakampani padziko lonse lapansi.Protocol iyi imatanthawuza wolamulira yemwe akudziwa za momwe mauthenga amagwiritsidwira ntchito, mosasamala kanthu za maukonde omwe amalumikizana nawo.Imafotokoza momwe wowongolera amafunsira mwayi wopeza zida zina, momwe angayankhire zopempha kuchokera ku zida zina, komanso momwe angadziwire ndikulemba zolakwika.Imatchula schema yamtundu wa uthenga ndi mtundu wamba wa zomwe zili.Mukamalankhulana pa netiweki ya ModBus, ndondomekoyi imatsimikizira kuti wolamulira aliyense ayenera kudziwa adilesi ya chipangizo chake, kuzindikira mauthenga otumizidwa ndi adilesi, ndikuwunika zomwe angachite.Ngati yankho likufunika, wowongolera amapanga uthenga woyankha ndikutumiza pogwiritsa ntchito ModBus.Pamanetiweki ena, mauthenga omwe ali ndi protocol ya Modbus amasinthidwa kukhala chimango kapena mapaketi omwe amagwiritsidwa ntchito pa netiwekiyo.Kusinthaku kumakulitsanso njira yokhazikika ya netiweki yothetsera ma adilesi agawo, njira zamanjira, ndi kuzindikira zolakwika.Network ya ModBus ili ndi wolandila m'modzi yekha ndipo magalimoto onse amayendetsedwa ndi iye.Maukonde amatha kuthandizira mpaka 247 olamulira akapolo akutali, koma kuchuluka kwenikweni kwa oyang'anira akapolo omwe amathandizidwa kumadalira zida zoyankhulirana zomwe zimagwiritsidwa ntchito.Pogwiritsa ntchito dongosololi, PC iliyonse imatha kusinthanitsa zidziwitso ndi woyang'anira wapakati popanda kukhudza PC iliyonse kuti igwire ntchito zake zowongolera.

Pali mitundu iwiri yosankha mu ModBus system: ASCII (code yaku America yosinthira zidziwitso) ndi RTU (Remote Terminal Chipangizo).Zogulitsa zathu nthawi zambiri zimagwiritsa ntchito njira ya RTU polumikizana, ndipo 8Bit byte iliyonse muuthenga imakhala ndi zilembo ziwiri za 4Bit hexadecimal.Ubwino waukulu wa njirayi ndikuti imatha kutumiza zambiri pamlingo womwewo wa baud kuposa njira ya ASCII.