Nā huahana
ʻO ke kumukūʻai haʻahaʻa loa no ke kaula fiber optic - RS485 wili ʻia 2 kumu 3 kumu 4 puʻuwai 20AWG 22AWG 18AWG - AIXTON
Hauʻoli mākou e pane i nā nīnau a pau, e ʻoluʻolu e hoʻouna mai i kāu mau nīnau a me nā kauoha.
kikoʻī huahana
He kūlana uila wale nō ʻo RS-485. ʻAʻole e like me nā kūlana interface piha, e wehewehe ana i nā kikoʻī hana, mechanical, a me ka uila, wehewehe wale ʻo RS-485 i nā ʻano uila o nā mea hoʻokele a me nā mea loaʻa e hiki ke hoʻohana ʻia e hoʻokō i kahi laina hoʻoili multipoint kaulike. Eia naʻe, ua manaʻo ʻia kēia kūlana e kuhikuhi ʻia e nā kūlana kiʻekiʻe, e like me DL/T645, no ka laʻana, e wehewehe ana i ka protocol kamaʻilio no nā mika ikehu uila ma Kina, e kuhikuhi ana iā RS-485 ma ke ʻano he kūlana papa kino. Nā Hiʻohiʻona: 1. Kūpaʻa i ka wela a me ka pale ahi. 2. Hana insulation maikaʻi loa a me ke kūpaʻa kemika. 3. Hana hoʻoili maikaʻi loa ma muli o ka hoʻohana ʻana i ka polyethylene kiʻekiʻe no ka pale ʻana i ke kaula ulana. 4. Kūpaʻa maikaʻi i ka hoʻopilikia electromagnetic ma muli o ka hoʻohana ʻana i kahi ʻano hou o ka foil alumini a me ka pale ʻana i ka mesh keleawe ulana pālua. Nā noi: Hoʻohana ʻia nā hōʻailona RS-485 ma kahi ākea o nā ʻōnaehana kamepiula a me ka automation. I loko o kahi ʻōnaehana kamepiula, hiki iā SCSI-2 a me SCSI-3 ke hoʻohana i kēia kikoʻī e hoʻokō i ka papa kino no ka hoʻoili ʻikepili ma waena o kahi mea hoʻokele a me kahi disk drive. Hoʻohana ʻia ʻo RS-485 no nā kamaʻilio ʻikepili wikiwiki haʻahaʻa i loko o nā kaʻa kaʻa ohua ma nā keʻena mokulele kalepa. Pono ia i ka liʻiliʻi o ke kaula a hiki ke kaʻana like i ke kaula ma waena o nā noho he nui, e hōʻemi ana i ke kaumaha. Nā Palena Hoʻohālike NO OD(MM) Lōʻihi (m) Ke kū'ē kiʻekiʻe loa o ke alakaʻi ma 20℃(Ω/KM) Ke kū'ē liʻiliʻi loa o ke alakaʻi ma 70℃(Ω/KM) RS-485 2*0.5 5.5 100/200 39 0.012 RS-485 2*0.75 6.0 100/200 26 0.010 RS-485 2*1.0 6.6 100/200 19.5 0.010 RS-485 2*1.5 7.5 100/200 13.3 0.009 RS-485 2*2.5 8.7 100/200 7.98 0.008 RS-485 3*0.5 5.8 100/200 39 0.012 RS-485 3*0.75 6.3 100/200 26 0.010 Nā Kiʻi