{"id":17293,"date":"2025-07-23T14:36:34","date_gmt":"2025-07-23T07:36:34","guid":{"rendered":"https:\/\/lctech.vn\/?p=17293"},"modified":"2025-07-23T14:36:34","modified_gmt":"2025-07-23T07:36:34","slug":"5-loi-thuong-gap-khi-lap-dat-dong-ho-do-tu-xa-va-cach-khac-phuc-nhanh","status":"publish","type":"post","link":"https:\/\/lctech.vn\/zh\/5-loi-thuong-gap-khi-lap-dat-dong-ho-do-tu-xa-va-cach-khac-phuc-nhanh\/","title":{"rendered":"5 L\u1ed7i Th\u01b0\u1eddng G\u1eb7p Khi L\u1eafp \u0110\u1eb7t \u0110\u1ed3ng H\u1ed3 \u0110o T\u1eeb Xa V\u00e0 C\u00e1ch Kh\u1eafc Ph\u1ee5c Nhanh"},"content":{"rendered":"<div class=\"my-2 first:mt-0 [&amp;:has([data-inline-type=image])+&amp;:has([data-inline-type=image])_[data-inline-type=image]]:hidden [&amp;:has(table)_[data-inline-type=image]]:hidden [&amp;_h1:first-of-type]:mt-8 [&amp;_h2:first-of-type]:mt-6\">\n<div class=\"relative\">\n<div class=\"prose text-pretty dark:prose-invert inline leading-normal break-words min-w-0 [word-break:break-word]\">\n<p class=\"my-0\">Vi\u1ec7c tri\u1ec3n khai remote meter (n\u01b0\u1edbc, \u0111i\u1ec7n, h\u01a1i) \u0111em l\u1ea1i l\u1ee3i \u00edch l\u1edbn v\u1ec1 gi\u00e1m s\u00e1t v\u00e0 t\u1ed1i \u01b0u v\u1eadn h\u00e0nh, nh\u01b0ng n\u0103m v\u1ea5n \u0111\u1ec1 d\u01b0\u1edbi \u0111\u00e2y th\u01b0\u1eddng khi\u1ebfn h\u1ec7 th\u1ed1ng \u201c\u0111o t\u1eeb xa\u201d b\u00e1o sai s\u1ed1 li\u1ec7u, m\u1ea5t k\u1ebft n\u1ed1i ho\u1eb7c b\u1ecb khai th\u00e1c. D\u01b0\u1edbi m\u1ed7i l\u1ed7i l\u00e0\u00a0<strong>bi\u1ec3u hi\u1ec7n nh\u1eadn bi\u1ebft nhanh<\/strong>,\u00a0<strong>nguy\u00ean nh\u00e2n g\u1ed1c<\/strong>\u00a0v\u00e0\u00a0<strong>gi\u1ea3i ph\u00e1p kh\u1eafc ph\u1ee5c<\/strong>.<\/p>\n<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_76 counter-hierarchy ez-toc-counter ez-toc-grey ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">M\u1ee5c l\u1ee5c b\u00e0i vi\u1ebft<\/p>\n<span class=\"ez-toc-title-toggle\"><a href=\"#\" class=\"ez-toc-pull-right ez-toc-btn ez-toc-btn-xs ez-toc-btn-default ez-toc-toggle\" aria-label=\"Toggle Table of Content\"><span class=\"ez-toc-js-icon-con\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">Toggle<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #999;color:#999\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewbox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #999;color:#999\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewbox=\"0 0 24 24\" version=\"1.2\" baseprofile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/span><\/a><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/lctech.vn\/zh\/5-loi-thuong-gap-khi-lap-dat-dong-ho-do-tu-xa-va-cach-khac-phuc-nhanh\/#1_Chon_sai_cap_bao_ve_IP_Ingress_Protection\" >1. Ch\u1ecdn sai c\u1ea5p b\u1ea3o v\u1ec7 IP (Ingress Protection)<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/lctech.vn\/zh\/5-loi-thuong-gap-khi-lap-dat-dong-ho-do-tu-xa-va-cach-khac-phuc-nhanh\/#2_Song_truyen_kem_mat_goi_du_lieu\" >2. S\u00f3ng truy\u1ec1n k\u00e9m, m\u1ea5t g\u00f3i d\u1eef li\u1ec7u<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/lctech.vn\/zh\/5-loi-thuong-gap-khi-lap-dat-dong-ho-do-tu-xa-va-cach-khac-phuc-nhanh\/#3_Sai_cau_hinh_giao_thuc_Modbus_M-Bus_wM-Bus\" >3. Sai c\u1ea5u h\u00ecnh giao th\u1ee9c (Modbus, M-Bus, wM-Bus)<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/lctech.vn\/zh\/5-loi-thuong-gap-khi-lap-dat-dong-ho-do-tu-xa-va-cach-khac-phuc-nhanh\/#4_Lo_hong_bao_mat_%E2%80%93_mat_khau_mac_dinh_firmware_cu\" >4. L\u1ed7 h\u1ed5ng b\u1ea3o m\u1eadt \u2013 m\u1eadt kh\u1ea9u m\u1eb7c \u0111\u1ecbnh &amp; firmware c\u0169<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/lctech.vn\/zh\/5-loi-thuong-gap-khi-lap-dat-dong-ho-do-tu-xa-va-cach-khac-phuc-nhanh\/#5_Khong_hieu_chinh_chong_nhieu_nguon_noi_dat\" >5. Kh\u00f4ng hi\u1ec7u ch\u1ec9nh ch\u1ed1ng nhi\u1ec5u ngu\u1ed3n &amp; n\u1ed1i \u0111\u1ea5t<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/lctech.vn\/zh\/5-loi-thuong-gap-khi-lap-dat-dong-ho-do-tu-xa-va-cach-khac-phuc-nhanh\/#Checklist_Tong_Hop_Khi_Ban_Giao_He_Thong_Do_Tu_Xa\" >Checklist T\u1ed5ng H\u1ee3p Khi B\u00e0n Giao H\u1ec7 Th\u1ed1ng \u0110o T\u1eeb Xa<\/a><\/li><\/ul><\/nav><\/div>\n<h2 id=\"1-chn-sai-cp-bo-v-ip-ingress-protection\" class=\"mb-2 mt-6 text-base font-[500] first:mt-0 md:text-lg dark:font-[475] [hr+&amp;]:mt-4\"><span class=\"ez-toc-section\" id=\"1_Chon_sai_cap_bao_ve_IP_Ingress_Protection\"><\/span>1. Ch\u1ecdn sai c\u1ea5p b\u1ea3o v\u1ec7 IP (Ingress Protection)<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<\/div>\n<\/div>\n<\/div>\n<div class=\"my-2 first:mt-0 [&amp;:has([data-inline-type=image])+&amp;:has([data-inline-type=image])_[data-inline-type=image]]:hidden [&amp;:has(table)_[data-inline-type=image]]:hidden [&amp;_h1:first-of-type]:mt-8 [&amp;_h2:first-of-type]:mt-6\">\n<div class=\"relative\">\n<div class=\"prose text-pretty dark:prose-invert inline leading-normal break-words min-w-0 [word-break:break-word]\">\n<p class=\"my-0\">Khi l\u1eafp ngo\u00e0i tr\u1eddi ho\u1eb7c d\u01b0\u1edbi h\u1ed1 van, \u0111\u1ed3ng h\u1ed3 ph\u1ea3i \u0111\u1ea1t t\u1ed1i thi\u1ec3u IP67\u2013IP68. L\u1eafp model ch\u1ec9 IP54 khi\u1ebfn n\u01b0\u1edbc th\u1ea5m v\u00e0o bo m\u1ea1ch, d\u1eabn t\u1edbi:<\/p>\n<ul class=\"marker:text-textOff list-disc\">\n<li>\n<p class=\"my-0\">M\u00e0n h\u00ecnh LCD m\u1edd, s\u1ed1 ch\u1eadp ch\u1eddn.<\/p>\n<\/li>\n<li>\n<p class=\"my-0\">Module RF\/NB-IoT t\u1ef1 reset li\u00ean t\u1ee5c; pin ki\u1ec7t s\u1edbm 40%.<\/p>\n<\/li>\n<\/ul>\n<p class=\"my-0\">Nguy\u00ean nh\u00e2n: nh\u1ea7m ti\u00eau chu\u1ea9n \u201csmart indoor meter\u201d (IP54) v\u1edbi \u201csub-mersible meter\u201d (IP68)<\/p>\n<p class=\"my-0\">Kh\u1eafc ph\u1ee5c nhanh:<\/p>\n<ol class=\"marker:text-textOff list-decimal\">\n<li>\n<p class=\"my-0\">\u200bKi\u1ec3m tra tem IP tr\u00ean th\u00e2n thi\u1ebft b\u1ecb tr\u01b0\u1edbc khi l\u1eafp.<\/p>\n<\/li>\n<li>\n<p class=\"my-0\">\u200bN\u1ebfu \u0111\u00e3 l\u1eafp, b\u1ecdc l\u1ea1i b\u1eb1ng h\u1ed9p junction IP68 c\u00f3 gel ch\u1ed1ng \u1ea9m ho\u1eb7c thay b\u1eb1ng phi\u00ean b\u1ea3n IP68 c\u00f9ng h\u00e3ng.<\/p>\n<\/li>\n<li>\n<p class=\"my-0\">\u200bB\u1ed5 sung h\u1ea1t h\u00fat \u1ea9m b\u00ean trong n\u1eafp h\u1ed9p \u0111o \u0111\u1ec3 k\u00e9o d\u00e0i tu\u1ed5i th\u1ecd bo m\u1ea1ch.<\/p>\n<\/li>\n<\/ol>\n<\/div>\n<\/div>\n<\/div>\n<div class=\"first:-mt-sm my-5\">\n<div class=\"my-6 overflow-hidden border-borderMain\/50 ring-borderMain\/50 divide-borderMain\/50 dark:divide-borderMainDark\/50 dark:ring-borderMainDark\/50 dark:border-borderMainDark\/50 bg-transparent\">\n<div class=\"relative rounded-xl group relative w-full overflow-hidden border-borderMain\/50 ring-borderMain\/50 divide-borderMain\/50 dark:divide-borderMainDark\/50 dark:ring-borderMainDark\/50 dark:border-borderMainDark\/50 bg-background-50 dark:bg-offsetDark\">\n<div class=\"rounded-inherit pointer-events-none absolute inset-0 z-[1] border border-[black]\/5 dark:border-[white]\/5\"><\/div>\n<div class=\"absolute right-4 top-4 z-10 opacity-0 transition-opacity duration-300 group-hover:opacity-100\">\n<div class=\"flex items-center min-w-0 font-medium gap-1 justify-center\">\n<div class=\"flex shrink-0 items-center justify-center size-3.5\"><\/div>\n<\/div>\n<\/div>\n<div class=\"size-full\">\n<div class=\"bg-offset group relative h-full w-full overflow-hidden size-full [&amp;&gt;img]:max-h-[unset] rounded-md\" style=\"box-sizing: border-box; scrollbar-color: initial; scrollbar-width: initial; --tw-border-spacing-x: 0; --tw-border-spacing-y: 0; --tw-translate-x: 0; --tw-translate-y: 0; --tw-rotate: 0; --tw-skew-x: 0; --tw-skew-y: 0; --tw-scale-x: 1; --tw-scale-y: 1; --tw-scroll-snap-strictness: proximity; --tw-ring-offset-width: 0px; --tw-ring-offset-color: #fff; --tw-ring-color: rgb(59 130 246 \/ .5); --tw-ring-offset-shadow: 0 0 #0000; --tw-ring-shadow: 0 0 #0000; --tw-shadow: 0 0 #0000; --tw-shadow-colored: 0 0 #0000; position: relative; width: 740px; height: 740px; overflow: hidden; border-radius: 0.375rem; --tw-bg-opacity: 1; background-color: oklch(var(--background-color-200) \/ var(--tw-bg-opacity)); border: 0px solid #e5e7eb;\"><img decoding=\"async\" class=\"size-full object-cover transition-all ease-in-out max-h-[90vh] cursor-zoom-in hover:shadow-lg duration-200 lazyload\" data-src=\"https:\/\/user-gen-media-assets.s3.amazonaws.com\/gpt4o_images\/29ee43b6-cbb5-4ae1-aa63-a9b7198017c7.png\" alt=\"Minh h\u1ecda sai chu\u1ea9n IP c\u1ee7a \u0111\u1ed3ng h\u1ed3 \u0111o n\u01b0\u1edbc t\u1eeb xa\" src=\"data:image\/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==\" \/><\/div>\n<\/div>\n<\/div>\n<div class=\"pt-sm leading-tight\"><span class=\"font-sans text-sm text-textMain selection:bg-super\/50 selection:text-textMain dark:selection:bg-super\/10 dark:selection:text-super\">Minh h\u1ecda sai chu\u1ea9n IP c\u1ee7a \u0111\u1ed3ng h\u1ed3 \u0111o n\u01b0\u1edbc t\u1eeb xa<\/span><\/div>\n<\/div>\n<\/div>\n<div class=\"my-2 first:mt-0 [&amp;:has([data-inline-type=image])+&amp;:has([data-inline-type=image])_[data-inline-type=image]]:hidden [&amp;:has(table)_[data-inline-type=image]]:hidden [&amp;_h1:first-of-type]:mt-8 [&amp;_h2:first-of-type]:mt-6\">\n<div class=\"relative\">\n<div class=\"prose text-pretty dark:prose-invert inline leading-normal break-words min-w-0 [word-break:break-word]\">\n<h2 id=\"2-sng-truyn-km-mt-gi-d-liu\" class=\"mb-2 mt-6 text-base font-[500] first:mt-0 md:text-lg dark:font-[475] [hr+&amp;]:mt-4\"><span class=\"ez-toc-section\" id=\"2_Song_truyen_kem_mat_goi_du_lieu\"><\/span>2. S\u00f3ng truy\u1ec1n k\u00e9m, m\u1ea5t g\u00f3i d\u1eef li\u1ec7u<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<\/div>\n<\/div>\n<\/div>\n<div class=\"my-2 first:mt-0 [&amp;:has([data-inline-type=image])+&amp;:has([data-inline-type=image])_[data-inline-type=image]]:hidden [&amp;:has(table)_[data-inline-type=image]]:hidden [&amp;_h1:first-of-type]:mt-8 [&amp;_h2:first-of-type]:mt-6\">\n<div class=\"relative\">\n<div class=\"prose text-pretty dark:prose-invert inline leading-normal break-words min-w-0 [word-break:break-word]\">\n<p class=\"my-0\">Bi\u1ec3u hi\u1ec7n: server ch\u1ec9 nh\u1eadn log gi\u1edd \u0111\u1ea7u \u2013 c\u00e1c khung gi\u1edd sau tr\u1ed1ng; c\u1ea3nh b\u00e1o \u201clast seen &gt; 24 h\u201d.<\/p>\n<p class=\"my-0\">Nguy\u00ean nh\u00e2n:<\/p>\n<ul class=\"marker:text-textOff list-disc\">\n<li>\n<p class=\"my-0\">\u0110\u1eb7t \u0111\u1ed3ng h\u1ed3 d\u01b0\u1edbi n\u1eafp gang k\u00edn, t\u00edn hi\u1ec7u NB-IoT\/LoRaWAN suy hao 18\u201330 dB<a class=\"citation ml-xs inline\" href=\"https:\/\/community.ee.co.uk\/t5\/Mobile-Network-discussions\/Smart-Meter-connot-connect-to-poor-mobile-signal\/td-p\/1473396\" target=\"_blank\" rel=\"nofollow noopener\" data-state=\"closed\" aria-label=\"Smart Meter connot connect to poor mobile signal - EE Community\"><span class=\"relative select-none whitespace-nowrap align-middle -top-px font-sans text-base text-textMain selection:bg-super\/50 selection:text-textMain dark:selection:bg-super\/10 dark:selection:text-super\"><span class=\"min-w-[1rem] cursor-pointer rounded-[0.3125rem] text-center align-middle font-mono text-[0.6rem] tabular-nums py-[0.1875rem] px-[0.3rem] hover:bg-super dark:hover:text-backgroundDark cursor-pointer hover:text-white border-borderMain\/50 ring-borderMain\/50 divide-borderMain\/50 dark:divide-borderMainDark\/50 dark:ring-borderMainDark\/50 dark:border-borderMainDark\/50 bg-offsetPlus\"><span class=\"\">3<\/span><\/span><\/span><\/a><span class=\"whitespace-nowrap\"><a class=\"mr-[2px] citation ml-xs inline\" href=\"https:\/\/tektelic.com\/expertise\/lorawan-smart-metering\/\" target=\"_blank\" rel=\"nofollow noopener\" data-state=\"closed\" aria-label=\"Smart Metering with LoRaWAN | TEKTELIC Blog\"><span class=\"relative select-none whitespace-nowrap align-middle -top-px font-sans text-base text-textMain selection:bg-super\/50 selection:text-textMain dark:selection:bg-super\/10 dark:selection:text-super\"><span class=\"min-w-[1rem] cursor-pointer rounded-[0.3125rem] text-center align-middle font-mono text-[0.6rem] tabular-nums py-[0.1875rem] px-[0.3rem] hover:bg-super dark:hover:text-backgroundDark cursor-pointer hover:text-white border-borderMain\/50 ring-borderMain\/50 divide-borderMain\/50 dark:divide-borderMainDark\/50 dark:ring-borderMainDark\/50 dark:border-borderMainDark\/50 bg-offsetPlus\"><span class=\"\">4<\/span><\/span><\/span><\/a>.<\/span><\/p>\n<\/li>\n<li>\n<p class=\"my-0\">D\u00f9ng \u0103ng-ten PCB t\u00edch h\u1ee3p thay v\u00ec \u0103ng-ten whip ngo\u00e0i.<\/p>\n<\/li>\n<li>\n<p class=\"my-0\">Tri\u1ec3n khai t\u1ea1i \u201cv\u00f9ng l\u00f5m\u201d m\u00e0 kh\u00f4ng \u0111o kh\u1ea3o s\u00e1t RSSI tr\u01b0\u1edbc<\/p>\n<\/li>\n<\/ul>\n<p class=\"my-0\">Kh\u1eafc ph\u1ee5c:<\/p>\n<ol class=\"marker:text-textOff list-decimal\">\n<li>\n<p class=\"my-0\">\u0110\u01b0a \u0103ng-ten ra ngo\u00e0i n\u1eafp h\u1ea7m b\u1eb1ng c\u00e1p feeder IP68.<\/p>\n<\/li>\n<li>\n<p class=\"my-0\">B\u1eadt ADR (Adaptive Data Rate) tr\u00ean gateway LoRaWAN \/ y\u00eau c\u1ea7u nh\u00e0 m\u1ea1ng NB-IoT chuy\u1ec3n cell \u01b0u ti\u00ean.<\/p>\n<\/li>\n<li>\n<p class=\"my-0\">G\u1eafn b\u1ed9 repeater 433\/868 MHz ho\u1eb7c gateway micro-cell g\u1ea7n nh\u1ea5t (&lt; 500 m).<\/p>\n<\/li>\n<\/ol>\n<h2 id=\"3-sai-cu-hnh-giao-thc-modbus-m-bus-wm-bus\" class=\"mb-2 mt-6 text-base font-[500] first:mt-0 md:text-lg dark:font-[475] [hr+&amp;]:mt-4\"><span class=\"ez-toc-section\" id=\"3_Sai_cau_hinh_giao_thuc_Modbus_M-Bus_wM-Bus\"><\/span>3. Sai c\u1ea5u h\u00ecnh giao th\u1ee9c (Modbus, M-Bus, wM-Bus)<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<\/div>\n<\/div>\n<\/div>\n<div class=\"my-2 first:mt-0 [&amp;:has([data-inline-type=image])+&amp;:has([data-inline-type=image])_[data-inline-type=image]]:hidden [&amp;:has(table)_[data-inline-type=image]]:hidden [&amp;_h1:first-of-type]:mt-8 [&amp;_h2:first-of-type]:mt-6\">\n<div class=\"relative\">\n<div class=\"prose text-pretty dark:prose-invert inline leading-normal break-words min-w-0 [word-break:break-word]\">\n<p class=\"my-0\">Tri\u1ec7u ch\u1ee9ng: ph\u1ea7n m\u1ec1m b\u00e1o l\u1ed7i \u201cIllegal data value\u201d ho\u1eb7c timeout; \u0111\u00e8n RX tr\u00ean RS-485 nh\u1ea5p nh\u00e1y nh\u01b0ng TX kh\u00f4ng ph\u1ea3n h\u1ed3i<\/p>\n<p class=\"my-0\">Nguy\u00ean nh\u00e2n \u0111i\u1ec3n h\u00ecnh<\/p>\n<ul class=\"marker:text-textOff list-disc\">\n<li>\n<p class=\"my-0\">Tr\u1ed9n l\u1eabn count v\u00e0 data_type (float32 + count \u2260 2)<span class=\"whitespace-nowrap\"><a class=\"mr-[2px] citation ml-xs inline\" href=\"https:\/\/community.home-assistant.io\/t\/modbus-configuration-gives-an-error\/622650\" target=\"_blank\" rel=\"nofollow noopener\" data-state=\"closed\" aria-label=\"Modbus configuration gives an error - Home Assistant Community\"><span class=\"relative select-none whitespace-nowrap align-middle -top-px font-sans text-base text-textMain selection:bg-super\/50 selection:text-textMain dark:selection:bg-super\/10 dark:selection:text-super\"><span class=\"min-w-[1rem] cursor-pointer rounded-[0.3125rem] text-center align-middle font-mono text-[0.6rem] tabular-nums py-[0.1875rem] px-[0.3rem] hover:bg-super dark:hover:text-backgroundDark cursor-pointer hover:text-white border-borderMain\/50 ring-borderMain\/50 divide-borderMain\/50 dark:divide-borderMainDark\/50 dark:ring-borderMainDark\/50 dark:border-borderMainDark\/50 bg-offsetPlus\"><span class=\"\">7<\/span><\/span><\/span><\/a>.<\/span><\/p>\n<\/li>\n<li>\n<p class=\"my-0\">\u0110\u1ecba ch\u1ec9 slave tr\u00f9ng (ID = 1) sau khi clone h\u00e0ng lo\u1ea1t.<\/p>\n<\/li>\n<li>\n<p class=\"my-0\">Baudrate gi\u1ea3m c\u00f2n 2400 bps nh\u01b0ng master gi\u1eef 9600.<\/p>\n<\/li>\n<\/ul>\n<p class=\"my-0\">Kh\u1eafc ph\u1ee5c:<\/p>\n<ol class=\"marker:text-textOff list-decimal\">\n<li>\n<p class=\"my-0\">\u0110\u1ecdc manual, \u0111\u1eb7t data_type ph\u00f9 h\u1ee3p: float32 \u21c6 count 2, uint16 \u21c6 count 1.<\/p>\n<\/li>\n<li>\n<p class=\"my-0\">\u0110\u1eb7t l\u1ea1i slave ID b\u1eb1ng handheld ho\u1eb7c l\u1ec7nh 0x06, tr\u00e1nh \u0111\u1ecba ch\u1ec9 1\u20133 m\u1eb7c \u0111\u1ecbnh c\u1ee7a inverter.<\/p>\n<\/li>\n<li>\n<p class=\"my-0\">\u0110\u1ed3ng b\u1ed9 baudrate, parity, stop bit; k\u00e9o timeout master \u2265 100 ms cho \u0111\u01b0\u1eddng d\u00e0i &gt; 800 m.<\/p>\n<\/li>\n<\/ol>\n<p class=\"my-0\">Checklist ki\u1ec3m c\u1ea5u h\u00ecnh nhanh:<\/p>\n<div class=\"group relative\">\n<div class=\"w-full overflow-x-auto md:max-w-[90vw] border-borderMain\/50 ring-borderMain\/50 divide-borderMain\/50 dark:divide-borderMainDark\/50 dark:ring-borderMainDark\/50 dark:border-borderMainDark\/50 bg-transparent\">\n<table class=\"border-borderMain my-[1em] w-full table-auto border\">\n<thead class=\"bg-offset\">\n<tr>\n<th class=\"border-borderMain px-sm py-sm dark:border-borderMainDark break-normal border text-left align-top\">H\u1ea1ng m\u1ee5c<\/th>\n<th class=\"border-borderMain px-sm py-sm dark:border-borderMainDark break-normal border text-left align-top\">Gi\u00e1 tr\u1ecb khuy\u1ebfn ngh\u1ecb<\/th>\n<th class=\"border-borderMain px-sm py-sm dark:border-borderMainDark break-normal border text-left align-top\">\u0110\u00e3 OK?<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td class=\"border-borderMain px-sm dark:border-borderMainDark min-w-[48px] break-normal border\">Baudrate<\/td>\n<td class=\"border-borderMain px-sm dark:border-borderMainDark min-w-[48px] break-normal border\">9600 \/ 19200 bps<\/td>\n<td class=\"border-borderMain px-sm dark:border-borderMainDark min-w-[48px] break-normal border\">\u2610<\/td>\n<\/tr>\n<tr>\n<td class=\"border-borderMain px-sm dark:border-borderMainDark min-w-[48px] break-normal border\">Parity<\/td>\n<td class=\"border-borderMain px-sm dark:border-borderMainDark min-w-[48px] break-normal border\">Even, 1 stop bit<\/td>\n<td class=\"border-borderMain px-sm dark:border-borderMainDark min-w-[48px] break-normal border\">\u2610<\/td>\n<\/tr>\n<tr>\n<td class=\"border-borderMain px-sm dark:border-borderMainDark min-w-[48px] break-normal border\">Slave ID duy nh\u1ea5t<\/td>\n<td class=\"border-borderMain px-sm dark:border-borderMainDark min-w-[48px] break-normal border\">4-247<\/td>\n<td class=\"border-borderMain px-sm dark:border-borderMainDark min-w-[48px] break-normal border\">\u2610<\/td>\n<\/tr>\n<tr>\n<td class=\"border-borderMain px-sm dark:border-borderMainDark min-w-[48px] break-normal border\">Data type th\u1ed1ng nh\u1ea5t<\/td>\n<td class=\"border-borderMain px-sm dark:border-borderMainDark min-w-[48px] break-normal border\">uint16 \/ float32<\/td>\n<td class=\"border-borderMain px-sm dark:border-borderMainDark min-w-[48px] break-normal border\">\u2610<\/td>\n<\/tr>\n<tr>\n<td class=\"border-borderMain px-sm dark:border-borderMainDark min-w-[48px] break-normal border\">Timeout Master<\/td>\n<td class=\"border-borderMain px-sm dark:border-borderMainDark min-w-[48px] break-normal border\">\u2265100 ms\/1000 m c\u00e1p<\/td>\n<td class=\"border-borderMain px-sm dark:border-borderMainDark min-w-[48px] break-normal border\">\u2610<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<div class=\"px-two bg-background border-border shadow-subtle pointer-coarse:opacity-100 right-xs absolute bottom-0 flex gap-2 rounded-lg border py-px opacity-0 transition-opacity group-hover:opacity-100\">\n<div>\n<div class=\"flex items-center min-w-0 font-medium gap-1 justify-center\">\n<div class=\"flex shrink-0 items-center justify-center size-3.5\"><\/div>\n<\/div>\n<\/div>\n<div>\n<div class=\"flex items-center min-w-0 font-medium gap-1 justify-center\">\n<div class=\"flex shrink-0 items-center justify-center size-3.5\"><\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<h2 id=\"4-l-hng-bo-mt--mt-khu-mc-nh--firmware-c\" class=\"mb-2 mt-6 text-base font-[500] first:mt-0 md:text-lg dark:font-[475] [hr+&amp;]:mt-4\"><span class=\"ez-toc-section\" id=\"4_Lo_hong_bao_mat_%E2%80%93_mat_khau_mac_dinh_firmware_cu\"><\/span>4. L\u1ed7 h\u1ed5ng b\u1ea3o m\u1eadt \u2013 m\u1eadt kh\u1ea9u m\u1eb7c \u0111\u1ecbnh &amp; firmware c\u0169<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p class=\"my-0\">Nguy c\u01a1: k\u1ebb t\u1ea5n c\u00f4ng khai th\u00e1c c\u1ed5ng web\/FTP ch\u01b0a \u0111\u1ed5i m\u1eadt kh\u1ea9u (\u201cadmin\/admin\u201d) ho\u1eb7c l\u1ed7 h\u1ed5ng integer overflow cho ph\u00e9p RCE, l\u00e0m reset \u0111\u1ed3ng h\u1ed3 h\u00e0ng lo\u1ea1t<\/p>\n<p class=\"my-0\">Kh\u1eafc ph\u1ee5c:<\/p>\n<ol class=\"marker:text-textOff list-decimal\">\n<li>\n<p class=\"my-0\">\u0110\u1ed5i password m\u1eb7c \u0111\u1ecbnh ngay khi commissioning; b\u1eadt TLS\/DTLS n\u1ebfu h\u1ed7 tr\u1ee3.<\/p>\n<\/li>\n<li>\n<p class=\"my-0\">C\u1eadp nh\u1eadt firmware (v\u00ed d\u1ee5 Schneider PowerLogic ION v2.0.3 \u0111\u00e3 v\u00e1 CVE-2023-2817)<\/p>\n<\/li>\n<li>\n<p class=\"my-0\">B\u1eadt whitelisting \u0111\u1ecba ch\u1ec9 IP qu\u1ea3n tr\u1ecb; t\u00e1ch VLAN AMI kh\u1ecfi m\u1ea1ng IT.<\/p>\n<\/li>\n<li>\n<p class=\"my-0\">Tri\u1ec3n khai Root-of-Trust\/digital-signature cho g\u00f3i OTA nh\u01b0 khuy\u1ebfn c\u00e1o c\u1ee7a LoRa Alliance &amp; TPM guideline<\/p>\n<\/li>\n<\/ol>\n<h2 id=\"5-khng-hiu-chnh-chng-nhiu-ngun--ni-t\" class=\"mb-2 mt-6 text-base font-[500] first:mt-0 md:text-lg dark:font-[475] [hr+&amp;]:mt-4\"><span class=\"ez-toc-section\" id=\"5_Khong_hieu_chinh_chong_nhieu_nguon_noi_dat\"><\/span>5. Kh\u00f4ng hi\u1ec7u ch\u1ec9nh ch\u1ed1ng nhi\u1ec5u ngu\u1ed3n &amp; n\u1ed1i \u0111\u1ea5t<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<\/div>\n<\/div>\n<\/div>\n<div class=\"my-2 first:mt-0 [&amp;:has([data-inline-type=image])+&amp;:has([data-inline-type=image])_[data-inline-type=image]]:hidden [&amp;:has(table)_[data-inline-type=image]]:hidden [&amp;_h1:first-of-type]:mt-8 [&amp;_h2:first-of-type]:mt-6\">\n<div class=\"relative\">\n<div class=\"prose text-pretty dark:prose-invert inline leading-normal break-words min-w-0 [word-break:break-word]\">\n<p class=\"my-0\">Hi\u1ec7n t\u01b0\u1ee3ng: gi\u00e1 tr\u1ecb \u0111o nh\u1ea3y \u00b15% v\u00e0o gi\u1edd cao \u0111i\u1ec3m; \u0111\u1ed3ng h\u1ed3 ng\u1eaft k\u1ebft n\u1ed1i Modbus khi \u0111\u1ed9ng c\u01a1 l\u1edbn kh\u1edfi \u0111\u1ed9ng.<\/p>\n<p class=\"my-0\">Nguy\u00ean nh\u00e2n:<\/p>\n<ul class=\"marker:text-textOff list-disc\">\n<li>\n<p class=\"my-0\">Kh\u00f4ng d\u00f9ng c\u00e1p xo\u1eafn \u0111\u00f4i ch\u1ed1ng nhi\u1ec5u, thi\u1ebfu ferrite choke.<\/p>\n<\/li>\n<li>\n<p class=\"my-0\">Thi\u1ebft b\u1ecb kh\u00f4ng n\u1ed1i \u0111\u1ea5t v\u1ecf, khi\u1ebfn ESD &gt; 4 kV \u0111\u00e1nh v\u00e0o c\u1ed5ng RS-485.<\/p>\n<\/li>\n<\/ul>\n<p class=\"my-0\">Kh\u1eafc ph\u1ee5c:<\/p>\n<ol class=\"marker:text-textOff list-decimal\">\n<li>\n<p class=\"my-0\">S\u1eed d\u1ee5ng c\u00e1p STP RS-485, th\u00eam v\u00f2ng ferrite g\u1ea7n c\u1ed5ng meter.<\/p>\n<\/li>\n<li>\n<p class=\"my-0\">N\u1ed1i \u0111\u1ea5t v\u1ecf \u0111\u1ed3ng h\u1ed3 &amp; l\u00e1 ch\u1eafn c\u00e1p m\u1ed9t \u0111\u1ea7u.<\/p>\n<\/li>\n<li>\n<p class=\"my-0\">L\u1eafp surge-arrester 10 kA cho \u0111\u01b0\u1eddng t\u00edn hi\u1ec7u ch\u1ea1y song song c\u00e1p l\u1ef1c.<\/p>\n<\/li>\n<\/ol>\n<h2 id=\"checklist-tng-hp-khi-bn-giao-h-thng-o-t-xa\" class=\"mb-2 mt-6 text-base font-[500] first:mt-0 md:text-lg dark:font-[475] [hr+&amp;]:mt-4\"><span class=\"ez-toc-section\" id=\"Checklist_Tong_Hop_Khi_Ban_Giao_He_Thong_Do_Tu_Xa\"><\/span>Checklist T\u1ed5ng H\u1ee3p Khi B\u00e0n Giao H\u1ec7 Th\u1ed1ng \u0110o T\u1eeb Xa<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<\/div>\n<\/div>\n<\/div>\n<div class=\"my-2 first:mt-0 [&amp;:has([data-inline-type=image])+&amp;:has([data-inline-type=image])_[data-inline-type=image]]:hidden [&amp;:has(table)_[data-inline-type=image]]:hidden [&amp;_h1:first-of-type]:mt-8 [&amp;_h2:first-of-type]:mt-6\">\n<div class=\"relative\">\n<div class=\"prose text-pretty dark:prose-invert inline leading-normal break-words min-w-0 [word-break:break-word]\">\n<div class=\"group relative\">\n<div class=\"w-full overflow-x-auto md:max-w-[90vw] border-borderMain\/50 ring-borderMain\/50 divide-borderMain\/50 dark:divide-borderMainDark\/50 dark:ring-borderMainDark\/50 dark:border-borderMainDark\/50 bg-transparent\">\n<table class=\"border-borderMain my-[1em] w-full table-auto border\">\n<thead class=\"bg-offset\">\n<tr>\n<th class=\"border-borderMain px-sm py-sm dark:border-borderMainDark break-normal border text-left align-top\">#<\/th>\n<th class=\"border-borderMain px-sm py-sm dark:border-borderMainDark break-normal border text-left align-top\">H\u1ea1ng m\u1ee5c<\/th>\n<th class=\"border-borderMain px-sm py-sm dark:border-borderMainDark break-normal border text-left align-top\">Ti\u00eau chu\u1ea9n \u0111\u1ea1t<\/th>\n<th class=\"border-borderMain px-sm py-sm dark:border-borderMainDark break-normal border text-left align-top\">\u0110\u00e3 ki\u1ec3m<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td class=\"border-borderMain px-sm dark:border-borderMainDark min-w-[48px] break-normal border\">1<\/td>\n<td class=\"border-borderMain px-sm dark:border-borderMainDark min-w-[48px] break-normal border\">IP-rating \u0111\u00fang v\u1ecb tr\u00ed (IP68 outdoor\/underground)<\/td>\n<td class=\"border-borderMain px-sm dark:border-borderMainDark min-w-[48px] break-normal border\">IEC 60529<\/td>\n<td class=\"border-borderMain px-sm dark:border-borderMainDark min-w-[48px] break-normal border\">\u2610<\/td>\n<\/tr>\n<tr>\n<td class=\"border-borderMain px-sm dark:border-borderMainDark min-w-[48px] break-normal border\">2<\/td>\n<td class=\"border-borderMain px-sm dark:border-borderMainDark min-w-[48px] break-normal border\">RSSI t\u1ea1i v\u1ecb tr\u00ed \u2264 -105 dBm (NB-IoT) \/ SNR \u2265 -7 dB (LoRa)<\/td>\n<td class=\"border-borderMain px-sm dark:border-borderMainDark min-w-[48px] break-normal border\">3GPP \/ LoRa WAN<\/td>\n<td class=\"border-borderMain px-sm dark:border-borderMainDark min-w-[48px] break-normal border\">\u2610<\/td>\n<\/tr>\n<tr>\n<td class=\"border-borderMain px-sm dark:border-borderMainDark min-w-[48px] break-normal border\">3<\/td>\n<td class=\"border-borderMain px-sm dark:border-borderMainDark min-w-[48px] break-normal border\">Modbus\/WM-Bus c\u1ea5u h\u00ecnh h\u1ee3p l\u1ec7, ID duy nh\u1ea5t<\/td>\n<td class=\"border-borderMain px-sm dark:border-borderMainDark min-w-[48px] break-normal border\">EN 13757-4<\/td>\n<td class=\"border-borderMain px-sm dark:border-borderMainDark min-w-[48px] break-normal border\">\u2610<\/td>\n<\/tr>\n<tr>\n<td class=\"border-borderMain px-sm dark:border-borderMainDark min-w-[48px] break-normal border\">4<\/td>\n<td class=\"border-borderMain px-sm dark:border-borderMainDark min-w-[48px] break-normal border\">\u0110\u00e3 \u0111\u1ed5i m\u1eadt kh\u1ea9u m\u1eb7c \u0111\u1ecbnh, b\u1eadt m\u00e3 h\u00f3a AES-128<\/td>\n<td class=\"border-borderMain px-sm dark:border-borderMainDark min-w-[48px] break-normal border\">NIST SP 800-38A<\/td>\n<td class=\"border-borderMain px-sm dark:border-borderMainDark min-w-[48px] break-normal border\">\u2610<\/td>\n<\/tr>\n<tr>\n<td class=\"border-borderMain px-sm dark:border-borderMainDark min-w-[48px] break-normal border\">5<\/td>\n<td class=\"border-borderMain px-sm dark:border-borderMainDark min-w-[48px] break-normal border\">Firmware m\u1edbi nh\u1ea5t, c\u00f3 ch\u1eef k\u00fd s\u1ed1<\/td>\n<td class=\"border-borderMain px-sm dark:border-borderMainDark min-w-[48px] break-normal border\">Vendor advisory<\/td>\n<td class=\"border-borderMain px-sm dark:border-borderMainDark min-w-[48px] break-normal border\">\u2610<\/td>\n<\/tr>\n<tr>\n<td class=\"border-borderMain px-sm dark:border-borderMainDark min-w-[48px] break-normal border\">6<\/td>\n<td class=\"border-borderMain px-sm dark:border-borderMainDark min-w-[48px] break-normal border\">C\u00e1p t\u00edn hi\u1ec7u STP + n\u1ed1i \u0111\u1ea5t m\u1ed9t \u0111\u1ea7u<\/td>\n<td class=\"border-borderMain px-sm dark:border-borderMainDark min-w-[48px] break-normal border\">IEC 61000-4-5<\/td>\n<td class=\"border-borderMain px-sm dark:border-borderMainDark min-w-[48px] break-normal border\">\u2610<\/td>\n<\/tr>\n<tr>\n<td class=\"border-borderMain px-sm dark:border-borderMainDark min-w-[48px] break-normal border\">7<\/td>\n<td class=\"border-borderMain px-sm dark:border-borderMainDark min-w-[48px] break-normal border\">\u0110\u00e3 ghi log ch\u1ee9ng nh\u1eadn IP, RF survey, config<\/td>\n<td class=\"border-borderMain px-sm dark:border-borderMainDark min-w-[48px] break-normal border\">ISO 9001<\/td>\n<td class=\"border-borderMain px-sm dark:border-borderMainDark min-w-[48px] break-normal border\">\u2610<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<div class=\"px-two bg-background border-border shadow-subtle pointer-coarse:opacity-100 right-xs absolute bottom-0 flex gap-2 rounded-lg border py-px opacity-0 transition-opacity group-hover:opacity-100\">\n<div>\n<div class=\"flex items-center min-w-0 font-medium gap-1 justify-center\">\n<div class=\"flex shrink-0 items-center justify-center size-3.5\"><\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<p class=\"my-0\">Vi\u1ec7c r\u00e0 so\u00e1t 5 l\u1ed7i tr\u00ean theo checklist tr\u01b0\u1edbc khi nghi\u1ec7m thu gi\u00fap gi\u1ea3m 80% s\u1ef1 c\u1ed1 \u201cm\u1ea5t d\u1eef li\u1ec7u \u2013 sai s\u1ed1\u201d v\u00e0 k\u00e9o d\u00e0i tu\u1ed5i th\u1ecd thi\u1ebft b\u1ecb, \u0111\u1ea3m b\u1ea3o h\u1ec7 th\u1ed1ng \u0111o t\u1eeb xa v\u1eadn h\u00e0nh \u1ed5n \u0111\u1ecbnh, an to\u00e0n d\u1eef li\u1ec7u.<\/p>\n<\/div>\n<\/div>\n<\/div>","protected":false},"excerpt":{"rendered":"<p>Vi\u1ec7c tri\u1ec3n khai remote meter (n\u01b0\u1edbc, \u0111i\u1ec7n, h\u01a1i) \u0111em l\u1ea1i l\u1ee3i \u00edch l\u1edbn v\u1ec1 gi\u00e1m s\u00e1t v\u00e0 t\u1ed1i \u01b0u v\u1eadn<\/p>","protected":false},"author":1,"featured_media":16919,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[35],"tags":[],"class_list":["post-17293","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-tin-tuc"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v24.5 (Yoast SEO v25.8) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>5 L\u1ed7i 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T\u1ee9c"],"inLanguage":"zh-Hans"},{"@type":"WebPage","@id":"https:\/\/lctech.vn\/5-loi-thuong-gap-khi-lap-dat-dong-ho-do-tu-xa-va-cach-khac-phuc-nhanh\/","url":"https:\/\/lctech.vn\/5-loi-thuong-gap-khi-lap-dat-dong-ho-do-tu-xa-va-cach-khac-phuc-nhanh\/","name":"5 L\u1ed7i Th\u01b0\u1eddng G\u1eb7p Khi L\u1eafp \u0110\u1eb7t \u0110\u1ed3ng H\u1ed3 \u0110o T\u1eeb Xa V\u00e0 C\u00e1ch Kh\u1eafc Ph\u1ee5c Nhanh - LC 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