Cov khoom
Tus nqi qis tshaj plaws rau Fiber Optic Cable - RS485 twisted 2 lub hauv paus 3 lub hauv paus 4 lub siab 20AWG 22AWG 18AWG - AIXTON
Peb zoo siab teb cov lus nug, thov xa koj cov lus nug thiab cov lus txib rau peb.
cov ntsiab lus ntawm cov khoom
RS-485 yog tus qauv hluav taws xob xwb. Tsis zoo li cov qauv interface uas muaj ntau yam, uas txhais cov yam ntxwv ua haujlwm, kev siv tshuab, thiab hluav taws xob, RS-485 tsuas txhais cov yam ntxwv hluav taws xob ntawm cov maub los thiab cov txais uas siv tau los ua kom muaj kev sib npaug ntawm ntau txoj kab sib kis. Txawm li cas los xij, tus qauv no yog tsim los siv rau cov qauv siab dua, xws li DL/T645, piv txwv li, uas txhais cov txheej txheem sib txuas lus rau cov ntsuas hluav taws xob hauv Suav teb, qhia RS-485 ua tus qauv txheej txheem. Cov yam ntxwv: 1. Tiv taus kub thiab nplaim taws. 2. Kev ua haujlwm rwb thaiv tsev zoo heev thiab kev ruaj khov tshuaj lom neeg. 3. Kev ua haujlwm kis tau zoo heev vim yog siv cov polyethylene zoo rau kev tiv thaiv cable braided. 4. Kev tiv thaiv zoo rau kev cuam tshuam electromagnetic vim yog siv cov ntawv ci txhuas tshiab thiab ob txheej braided tooj liab mesh tiv thaiv. Cov ntawv thov: RS-485 cov cim siv rau hauv ntau yam khoos phis tawj thiab automation systems. Hauv lub khoos phis tawj, SCSI-2 thiab SCSI-3 tuaj yeem siv cov lus qhia no los siv cov txheej txheem rau kev xa cov ntaub ntawv ntawm tus maub los thiab lub disk drive. RS-485 siv rau kev sib txuas lus ceev qis hauv cov tsheb npav neeg caij tsheb hauv cov dav hlau lag luam. Nws xav tau tsawg kawg nkaus cables thiab tuaj yeem sib koom cables ntawm ntau lub rooj zaum, txo qhov hnyav. Cov Qauv TSIS MUAJ OD (MM) Ntev (m) Qhov siab tshaj plaws ntawm tus neeg coj hluav taws xob tsis kam ntawm 20 ℃ (Ω / KM) Qhov tsawg kawg nkaus ntawm tus neeg coj hluav taws xob tsis kam ntawm 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 Duab