{"id":4626,"date":"2025-10-23T11:12:00","date_gmt":"2025-10-23T11:12:00","guid":{"rendered":"https:\/\/lp.szlogic.cn\/knowledge-center\/rj45-magjacks-between-plc-and-scada-host\/"},"modified":"2026-06-22T09:00:57","modified_gmt":"2026-06-22T09:00:57","slug":"rj45-magjacks-between-plc-and-scada-host","status":"publish","type":"post","link":"https:\/\/resourceslp.szlogic.cn\/vi\/knowledge-center\/rj45-magjacks-between-plc-and-scada-host","title":{"rendered":"\u0110\u1ea7u n\u1ed1i RJ45 Magjack \u2013 Giao di\u1ec7n truy\u1ec1n th\u00f4ng Ethernet gi\u1eefa PLC v\u00e0 m\u00e1y ch\u1ee7 SCADA"},"content":{"rendered":"<figure class=\"wp-block-image aligncenter size-large\"><img fetchpriority=\"high\" decoding=\"async\" width=\"1200\" height=\"712\" src=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/6155cfaa516e4605ac03cabecce18b61.webp\" alt=\"RJ45 Magjacks Between PLC and SCADA Host\" class=\"wp-image-4622\" srcset=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/6155cfaa516e4605ac03cabecce18b61.webp 1200w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/6155cfaa516e4605ac03cabecce18b61-300x178.webp 300w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/6155cfaa516e4605ac03cabecce18b61-1024x608.webp 1024w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/6155cfaa516e4605ac03cabecce18b61-768x456.webp 768w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/6155cfaa516e4605ac03cabecce18b61-18x12.webp 18w\" sizes=\"(max-width: 1200px) 100vw, 1200px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Trong t\u1ef1 \u0111\u1ed9ng h\u00f3a c\u00f4ng nghi\u1ec7p hi\u1ec7n \u0111\u1ea1i, k\u1ebft n\u1ed1i gi\u1eefa b\u1ed9 \u0111i\u1ec1u khi\u1ec3n logic l\u1eadp tr\u00ecnh (<a target=\"_blank\" rel=\"\" href=\"https:\/\/resourceslp.szlogic.cn\/vi\/glossary\/plc-programmable-logic-controller-for-industrial-automation-guide\/\"><strong>PLCs<\/strong><\/a>) v\u00e0 h\u1ec7 th\u1ed1ng gi\u00e1m s\u00e1t v\u00e0 thu th\u1eadp d\u1eef li\u1ec7u (<a target=\"_blank\" rel=\"\" href=\"https:\/\/resourceslp.szlogic.cn\/vi\/glossary\/what-is-scada-systems\/\"><strong>SCADA<\/strong><\/a>) ph\u1ee5 thu\u1ed9c v\u00e0o kh\u1ea3 n\u0103ng k\u1ebft n\u1ed1i Ethernet \u0111\u00e1ng tin c\u1eady. \u1ede trung t\u00e2m c\u1ee7a kh\u1ea3 n\u0103ng k\u1ebft n\u1ed1i n\u00e0y l\u00e0 b\u1ed9 n\u1ed1i Magjack\u2014m\u1ed9t \u0111\u1ea7u n\u1ed1i Ethernet t\u00edch h\u1ee3p m\u1ea1ch bi\u1ebfn \u00e1p v\u00e0 l\u1edbp ch\u1eafn \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o t\u00ednh to\u00e0n v\u1eb9n t\u00edn hi\u1ec7u, kh\u1ea3 n\u0103ng ch\u1ed1ng nhi\u1ec5u v\u00e0 \u0111\u1ed9 b\u1ec1n h\u1ec7 th\u1ed1ng. B\u00e0i vi\u1ebft n\u00e0y xem x\u00e9t vai tr\u00f2 then ch\u1ed1t c\u1ee7a c\u00e1c b\u1ed9 n\u1ed1i Magjack trong \u0111\u01b0\u1eddng truy\u1ec1n th\u00f4ng t\u1eeb PLC \u0111\u1ebfn SCADA, ph\u00e2n t\u00edch c\u00e1c \u0111\u1eb7c \u0111i\u1ec3m k\u1ef9 thu\u1eadt c\u1ee7a ch\u00fang v\u00e0 gi\u1ea3i th\u00edch c\u00e1ch ch\u00fang g\u00f3p ph\u1ea7n n\u00e2ng cao \u0111\u1ed9 tin c\u1eady c\u1ee7a m\u1ea1ng Ethernet c\u00f4ng nghi\u1ec7p. <a target=\"_blank\" rel=\"\" href=\"https:\/\/www.l-p.com\/store-17492-integrated-rj45-connector.htm\"><strong>c\u1ed5ng RJ45 Magjack<\/strong><\/a>\ud83d\udd01 V\u00ec sao k\u1ebft n\u1ed1i gi\u1eefa PLC v\u00e0 m\u00e1y ch\u1ee7 SCADA l\u1ea1i quan tr\u1ecdng.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Trong m\u1ed9t ki\u1ebfn tr\u00fac t\u1ef1 \u0111\u1ed9ng h\u00f3a \u0111i\u1ec3n h\u00ecnh, PLC (ho\u1eb7c \u0111\u01a1n v\u1ecb \u0111\u1ea7u cu\u1ed1i t\u1eeb xa \u2013 RTU) thu th\u1eadp d\u1eef li\u1ec7u t\u1eeb c\u00e1c thi\u1ebft b\u1ecb t\u1ea1i hi\u1ec7n tr\u01b0\u1eddng v\u00e0 trao \u0111\u1ed5i d\u1eef li\u1ec7u \u0111\u00f3 v\u1edbi m\u00e1y ch\u1ee7 SCADA \u0111\u1ec3 gi\u00e1m s\u00e1t, \u0111i\u1ec1u khi\u1ec3n v\u00e0 ph\u00e2n t\u00edch. V\u00ed d\u1ee5, c\u00e1c c\u1ea3m bi\u1ebfn truy\u1ec1n d\u1eef li\u1ec7u \u0111o l\u01b0\u1eddng t\u1edbi PLC; PLC g\u1eedi d\u1eef li\u1ec7u v\u00e0 nh\u1eadn l\u1ec7nh \u0111i\u1ec1u khi\u1ec3n qua Ethernet t\u1eeb m\u00e1y ch\u1ee7 SCADA ho\u1eb7c tr\u1ea1m \u0111i\u1ec1u khi\u1ec3n ch\u00ednh. Trong chu\u1ed7i n\u00e0y, giao di\u1ec7n Ethernet ph\u1ea3i \u0111\u1ea3m b\u1ea3o:<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Truy\u1ec1n d\u1eef li\u1ec7u t\u1ed1c \u0111\u1ed9 cao, \u0111\u1ed9 tr\u1ec5 th\u1ea5p<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p><strong>\u0111\u1ec3 ng\u01b0\u1eddi v\u1eadn h\u00e0nh SCADA c\u00f3 th\u1ec3 gi\u00e1m s\u00e1t v\u00e0 \u0111i\u1ec1u khi\u1ec3n theo th\u1eddi gian th\u1ef1c.<\/strong> \u0110\u1ed9 b\u1ec1n v\u1eadt l\u00fd v\u00e0 t\u00ednh to\u00e0n v\u1eb9n t\u00edn hi\u1ec7u.<\/p><\/li>\n\n\n\n<li><p><strong>trong m\u00f4i tr\u01b0\u1eddng c\u00f4ng nghi\u1ec7p kh\u1eafc nghi\u1ec7t (nhi\u1ec5u \u0111i\u1ec7n t\u1eeb \u2013 EMI, ch\u00eanh l\u1ec7ch \u0111i\u1ec7n th\u1ebf \u0111\u1ea5t, rung \u0111\u1ed9ng, nhi\u1ec7t \u0111\u1ed9 c\u1ef1c \u0111oan).<\/strong> C\u00e1ch ly galvanic v\u00e0 b\u1ea3o v\u1ec7.<\/p><\/li>\n\n\n\n<li><p><strong>kh\u1ecfi c\u00e1c xung qu\u00e1 \u00e1p nh\u1ea5t th\u1eddi ho\u1eb7c<\/strong> v\u00f2ng l\u1eb7p \u0111\u1ea5t <strong>gi\u1eefa c\u00e1c thi\u1ebft b\u1ecb ph\u00e2n t\u00e1n.<\/strong> B\u1ed1 tr\u00ed m\u1ea1ch in ti\u1ebft ki\u1ec7m kh\u00f4ng gian.<\/p><\/li>\n\n\n\n<li><p><strong>nh\u1eb1m ph\u00f9 h\u1ee3p v\u1edbi c\u00e1c module PLC nh\u1ecf g\u1ecdn v\u00e0 c\u00e1c card m\u1ea1ng \u0111i\u1ec1u khi\u1ec3n.<\/strong> V\u00ec giao di\u1ec7n n\u00e0y th\u01b0\u1eddng s\u1eed d\u1ee5ng \u0111\u1ea7u n\u1ed1i RJ45 g\u1eafn tr\u1ef1c ti\u1ebfp l\u00ean b\u1ea3ng m\u1ea1ch in (PCB), vi\u1ec7c l\u1ef1a ch\u1ecdn \u0111\u00fang lo\u1ea1i.<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\u0111\u1ea7u n\u1ed1i <a target=\"_blank\" rel=\"\" href=\"https:\/\/www.l-p.com\/store-17492-integrated-rj45-connector.htm\">tr\u1edf n\u00ean r\u1ea5t quan tr\u1ecdng \u0111\u1ed1i v\u1edbi \u0111\u1ed9 tin c\u1eady t\u1ed5ng th\u1ec3 c\u1ee7a h\u1ec7 th\u1ed1ng.<\/a> \ud83d\udd01 B\u1ed9 n\u1ed1i RJ45 Magjack l\u00e0 g\u00ec?.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">l\u00e0 m\u1ed9t \u0111\u1ea7u n\u1ed1i Ethernet d\u1ea1ng module (8P8C)<\/h2>\n\n\n\n<figure class=\"wp-block-image aligncenter size-large\"><img decoding=\"async\" width=\"1200\" height=\"712\" src=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/8ac0179909a048778b276ddac09035ab.jpg\" alt=\"What Is an RJ45 Magjack?\" class=\"wp-image-4623\" srcset=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/8ac0179909a048778b276ddac09035ab.jpg 1200w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/8ac0179909a048778b276ddac09035ab-300x178.jpg 300w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/8ac0179909a048778b276ddac09035ab-1024x608.jpg 1024w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/8ac0179909a048778b276ddac09035ab-768x456.jpg 768w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/8ac0179909a048778b276ddac09035ab-18x12.jpg 18w\" sizes=\"(max-width: 1200px) 100vw, 1200px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">M\u1ed9t <a target=\"_blank\" rel=\"\" href=\"https:\/\/resourceslp.szlogic.cn\/vi\/knowledge-center\/magnetic-rj45-jack-integrated-connector-modules\/\">c\u1ed5ng RJ45 Magjack<\/a> t\u00edch h\u1ee3p m\u1ea1ch bi\u1ebfn \u00e1p <strong>(bi\u1ebfn \u00e1p c\u00e1ch ly, cu\u1ed9n kh\u00e1ng ch\u1ebf \u0111\u1ed9 chung, \u0111\u00f4i khi k\u00e8m \u0111\u00e8n LED tr\u1ea1ng th\u00e1i v\u00e0 v\u1ecf b\u1ecdc ch\u1eafn \u0111i\u1ec7n t\u1eeb) \u0111\u01b0\u1ee3c t\u00edch h\u1ee3p ngay trong b\u1ea3n th\u00e2n module \u0111\u1ea7u n\u1ed1i.<\/strong> C\u00e1c \u01b0u \u0111i\u1ec3m n\u1ed5i b\u1eadt g\u1ed3m:. <br>X\u1eed l\u00fd t\u00edn hi\u1ec7u v\u00e0 c\u00e1ch ly:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p><strong>M\u1ea1ch bi\u1ebfn \u00e1p t\u00edch h\u1ee3p (bi\u1ebfn \u00e1p + cu\u1ed9n kh\u00e1ng) gi\u00fap gi\u1ea3m nhi\u1ec5u, h\u1ea1n ch\u1ebf ph\u1ea3n x\u1ea1 v\u00e0 xuy\u00ean nhi\u1ec5u, \u0111\u1ed3ng th\u1eddi cung c\u1ea5p c\u00e1ch ly galvanic (th\u01b0\u1eddng \u2265 1,5 kVrms) gi\u1eefa thi\u1ebft b\u1ecb v\u00e0 m\u1ea1ng.<\/strong> Hi\u1ec7u n\u0103ng EMI\/EMC:. <\/p><\/li>\n\n\n\n<li><p><strong>V\u1ecf b\u1ecdc ch\u1eafn k\u1ebft h\u1ee3p v\u1edbi m\u1ea1ch bi\u1ebfn \u00e1p b\u00ean trong mang l\u1ea1i kh\u1ea3 n\u0103ng ch\u1ed1ng nhi\u1ec5u t\u1ed1t h\u01a1n trong m\u00f4i tr\u01b0\u1eddng c\u00f4ng nghi\u1ec7p c\u00f3 m\u1ee9c nhi\u1ec5u \u0111i\u1ec7n cao (\u0111\u1ed9ng c\u01a1, b\u1ed9 \u0111i\u1ec1u khi\u1ec3n t\u1ed1c \u0111\u1ed9, ngu\u1ed3n xung).<\/strong> Ti\u1ebft ki\u1ec7m di\u1ec7n t\u00edch b\u1ea3ng m\u1ea1ch v\u00e0 thi\u1ebft k\u1ebf \u0111\u01a1n gi\u1ea3n h\u00f3a:. <\/p><\/li>\n\n\n\n<li><p><strong>V\u00ec c\u00e1c th\u00e0nh ph\u1ea7n bi\u1ebfn \u00e1p r\u1eddi \u0111\u00e3 \u0111\u01b0\u1ee3c t\u00edch h\u1ee3p s\u1eb5n b\u00ean trong Magjack, vi\u1ec7c b\u1ed1 tr\u00ed m\u1ea1ch in tr\u1edf n\u00ean \u0111\u01a1n gi\u1ea3n v\u00e0 g\u1ecdn h\u01a1n \u2014 y\u1ebfu t\u1ed1 quan tr\u1ecdng \u0111\u1ed1i v\u1edbi c\u00e1c module PLC v\u00e0 card m\u1ea1ng nh\u1ecf g\u1ecdn.<\/strong> T\u00ednh linh ho\u1ea1t cho Ethernet c\u00f4ng nghi\u1ec7p:. <\/p><\/li>\n\n\n\n<li><p><strong>Nhi\u1ec1u b\u1ed9 n\u1ed1i Magjack h\u1ed7 tr\u1ee3 chu\u1ea9n Ethernet 10\/100 Base-T v\u00e0 Gigabit Ethernet 1 Gb\/s, t\u01b0\u01a1ng th\u00edch PoE\/PoE+, c\u0169ng nh\u01b0 kh\u1ea3 n\u0103ng l\u1eafp \u0111\u1eb7t \u0111\u1ea1t ti\u00eau chu\u1ea9n c\u00f4ng nghi\u1ec7p.<\/strong> Do \u0111\u00f3, khi k\u1ebft n\u1ed1i PLC v\u1edbi m\u00e1y ch\u1ee7 SCADA qua Ethernet, Magjack \u0111\u1ea3m b\u1ea3o r\u1eb1ng t\u1ea7ng v\u1eadt l\u00fd kh\u00f4ng tr\u1edf th\u00e0nh m\u1eaft x\u00edch y\u1ebfu trong to\u00e0n b\u1ed9 h\u1ec7 th\u1ed1ng. <\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\ud83d\udd01 Magjack ph\u1ee5c v\u1ee5 nh\u01b0 th\u1ebf n\u00e0o trong \u0111\u01b0\u1eddng truy\u1ec1n PLC \u2194 SCADA.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Giao di\u1ec7n v\u1eadt l\u00fd \u1edf ph\u00eda PLC<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">Tr\u00ean module PLC ho\u1eb7c b\u1ed9 \u0111i\u1ec1u khi\u1ec3n t\u1ef1 \u0111\u1ed9ng nh\u00fang, b\u1ed9 n\u1ed1i<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">cung c\u1ea5p c\u1ed5ng Ethernet \u0111\u1ec3 k\u1ebft n\u1ed1i v\u1edbi c\u00e1c switch m\u1ea1ng ho\u1eb7c tr\u1ef1c ti\u1ebfp v\u1edbi c\u00e1c trung t\u00e2m m\u00e1y ch\u1ee7 SCADA. \u1ede giai \u0111o\u1ea1n n\u00e0y, Magjack \u0111\u1ea3m b\u1ea3o r\u1eb1ng PHY Ethernet c\u1ee7a PLC nh\u1eadn \u0111\u01b0\u1ee3c m\u1ed9t giao di\u1ec7n s\u1ea1ch v\u00e0 \u0111\u01b0\u1ee3c c\u00e1ch ly, mi\u1ec5n nhi\u1ec5m v\u1edbi s\u1ef1 ch\u00eanh l\u1ec7ch \u0111i\u1ec7n th\u1ebf \u0111\u1ea5t hay c\u00e1c xung EMI m\u1ea1nh t\u1eeb s\u00e0n nh\u00e0 m\u00e1y. <a target=\"_blank\" rel=\"\" href=\"https:\/\/www.l-p.com\/store-17492-integrated-rj45-connector.htm\">B\u1ed9 k\u1ebft n\u1ed1i RJ45 t\u00edch h\u1ee3p<\/a> K\u1ebft n\u1ed1i m\u1ea1ng v\u00e0 \u0111\u1ed9 nguy\u00ean v\u1eb9n t\u00edn hi\u1ec7u truy\u1ec1n.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Gi\u1eefa PLC v\u00e0 m\u00e1y ch\u1ee7 SCADA, c\u00e1p Ethernet (Cat5e\/Cat6),<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">, ho\u1eb7c c\u00e1c switch Ethernet c\u00f4ng nghi\u1ec7p truy\u1ec1n c\u00e1c khung d\u1eef li\u1ec7u. M\u1ea1ch bi\u1ebfn \u00e1p v\u00e0 l\u1edbp ch\u1eafn t\u00edch h\u1ee3p trong Magjack gi\u00fap duy tr\u00ec t\u00ednh to\u00e0n v\u1eb9n t\u00edn hi\u1ec7u tr\u00ean c\u00e1c c\u00e1p n\u00e0y c\u0169ng nh\u01b0 trong c\u00e1c khu v\u1ef1c c\u00f3 \u0111i\u1ec1u ki\u1ec7n \u0111i\u1ec7n t\u1eeb kh\u1eafc nghi\u1ec7t. \u0110i\u1ec1u n\u00e0y l\u00e0m gi\u1ea3m t\u1ed5n th\u1ea5t g\u00f3i tin, h\u1ea1n ch\u1ebf t\u1ed1i \u0111a s\u1ed1 l\u1ea7n truy\u1ec1n l\u1ea1i v\u00e0 gi\u1eef \u1ed5n \u0111\u1ecbnh t\u00ednh x\u00e1c \u0111\u1ecbnh trong giao ti\u1ebfp \u2014 y\u1ebfu t\u1ed1 then ch\u1ed1t \u0111\u1ed1i v\u1edbi c\u00e1c v\u00f2ng \u0111i\u1ec1u khi\u1ec3n SCADA., <a target=\"_blank\" rel=\"\" href=\"https:\/\/resourceslp.szlogic.cn\/vi\/knowledge-center\/what-is-a-network-switch\/\">routers<\/a>, Ph\u00eda m\u00e1y ch\u1ee7\/SCADA v\u00e0 \u0111\u1ed9 tin c\u1eady to\u00e0n h\u1ec7 th\u1ed1ng.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u1ede ph\u00eda m\u00e1y ch\u1ee7 SCADA ho\u1eb7c tr\u1ea1m \u0111i\u1ec1u khi\u1ec3n ch\u00ednh, \u0111\u1ea7u n\u1ed1i RJ45 Magjack m\u1ed9t l\u1ea7n n\u1eefa \u0111\u00f3ng vai tr\u00f2 l\u00e0 li\u00ean k\u1ebft v\u1eadt l\u00fd. B\u1ea5t k\u1ef3 suy gi\u1ea3m n\u00e0o \u1edf giao di\u1ec7n n\u00e0y (c\u00e1ch ly k\u00e9m, d\u1ec5 b\u1ecb \u1ea3nh h\u01b0\u1edfng b\u1edfi EMI) \u0111\u1ec1u c\u00f3 th\u1ec3 g\u00e2y ra vi\u1ec7c b\u1ecf s\u00f3t d\u1eef li\u1ec7u, c\u1ea3nh b\u00e1o sai ho\u1eb7c ch\u1eadm tr\u1ec5 trong \u0111i\u1ec1u khi\u1ec3n. Nh\u1edd s\u1eed d\u1ee5ng Magjack, c\u00e1c k\u1ef9 s\u01b0 thi\u1ebft k\u1ebf h\u1ec7 th\u1ed1ng n\u00e2ng cao \u0111\u1ed9 tin c\u1eady cho to\u00e0n b\u1ed9 ki\u1ebfn tr\u00fac PLC \u2194 SCADA.<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Y\u00eau c\u1ea7u c\u1ee7a t\u1ef1 \u0111\u1ed9ng h\u00f3a c\u00f4ng nghi\u1ec7p.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Trong c\u00e1c m\u00f4i tr\u01b0\u1eddng t\u1ef1 \u0111\u1ed9ng h\u00f3a c\u00f4ng nghi\u1ec7p (v\u00ed d\u1ee5: nh\u00e0 m\u00e1y s\u1ea3n xu\u1ea5t, tr\u1ea1m bi\u1ebfn \u00e1p, nh\u00e0 m\u00e1y x\u1eed l\u00fd n\u01b0\u1edbc), giao di\u1ec7n Ethernet ph\u1ea3i ch\u1ecbu \u0111\u01b0\u1ee3c \u1ee9ng su\u1ea5t c\u01a1 h\u1ecdc, b\u1ee5i b\u1ea9n, rung \u0111\u1ed9ng, \u0111\u1ed9 \u1ea9m cao v\u00e0 vi\u1ec7c thay \u0111\u1ed5i c\u00e1p th\u01b0\u1eddng xuy\u00ean. C\u00e1c module Magjack \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf \u0111\u1ec3 l\u1eafp ki\u1ec3u xuy\u00ean l\u1ed7, c\u00f3 \u0111\u1ed9 b\u00e1m c\u01a1 h\u1ecdc v\u1eefng ch\u1eafc v\u00e0 t\u00edch h\u1ee3p \u0111\u00e8n LED ch\u1ea9n \u0111o\u00e1n gi\u00fap \u0111\u00e1p \u1ee9ng nh\u1eefng y\u00eau c\u1ea7u n\u00e0y.<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\ud83d\udd01 C\u00e1c ti\u00eau ch\u00ed l\u1ef1a ch\u1ecdn ch\u00ednh \u0111\u1ed1i v\u1edbi b\u1ed9 n\u1ed1i RJ45 Magjack trong h\u1ec7 th\u1ed1ng PLC\/SCADA. <\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Khi l\u1ef1a ch\u1ecdn Magjack cho k\u1ebft n\u1ed1i PLC-to-SCADA, c\u1ea7n xem x\u00e9t c\u00e1c thu\u1ed9c t\u00ednh sau:<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">T\u1ed1c \u0111\u1ed9 v\u00e0 chu\u1ea9n Ethernet<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p><strong>: \u0110\u1ea3m b\u1ea3o h\u1ed7 tr\u1ee3 t\u1ed1c \u0111\u1ed9 d\u1eef li\u1ec7u y\u00eau c\u1ea7u (10\/100 Mb\/s ho\u1eb7c 5 Gb\/s) v\u00e0 ch\u1ee9c n\u0103ng t\u1ef1 \u0111\u1ed9ng ph\u00e1t hi\u1ec7n v\u00e0 \u0111\u1ea3o d\u00e2y (auto-MDIX).<\/strong>: Bi\u1ebfn \u00e1p v\u00e0 cu\u1ed9n kh\u00e1ng ph\u1ea3i \u0111\u01b0\u1ee3c t\u00edch h\u1ee3p s\u1eb5n, \u0111\u01b0\u1ee3c \u0111\u00e1nh gi\u00e1 cho. <\/p><\/li>\n\n\n\n<li><p><strong>B\u1ed9 bi\u1ebfn \u00e1p c\u00e1ch ly t\u00edch h\u1ee3p<\/strong>), gi\u00fap gi\u1ea3m thi\u1ec3u s\u1ed1 l\u01b0\u1ee3ng linh ki\u1ec7n ngo\u1ea1i vi. <a href=\"https:\/\/resourceslp.szlogic.cn\/vi\/knowledge-center\/lan-transformer-isolation-voltage-explained\/\" target=\"_blank\" rel=\"\">c\u00e1ch ly<\/a> (v\u00ed d\u1ee5:, <strong>1500 Vrms<\/strong>\u0110\u00e1nh gi\u00e1 EMI\/EMC v\u00e0 v\u1ecf b\u1ecdc ch\u1eafn. <\/p><\/li>\n\n\n\n<li><p><strong>: \u0110\u1ed1i v\u1edbi m\u00f4i tr\u01b0\u1eddng c\u00f4ng nghi\u1ec7p, h\u00e3y t\u00ecm c\u00e1c ch\u1ee9ng nh\u1eadn ho\u1eb7c ki\u1ec3m tra nh\u01b0 IEC61000-4-2\/\u22124-3, v.v.<\/strong>Ph\u01b0\u01a1ng ph\u00e1p l\u1eafp \u0111\u1eb7t c\u01a1 h\u1ecdc.<\/p><\/li>\n\n\n\n<li><p><strong>: Phi\u00ean b\u1ea3n l\u1eafp xuy\u00ean l\u1ed7 mang l\u1ea1i kh\u1ea3 n\u0103ng ch\u1ed1ng rung v\u00e0 \u0111\u1ed9 b\u1ec1n cao h\u01a1n so v\u1edbi phi\u00ean b\u1ea3n d\u00e1n b\u1ec1 m\u1eb7t (SMT) d\u00e0nh cho c\u00e1c b\u1ea3ng m\u1ea1ch PLC trong m\u00f4i tr\u01b0\u1eddng kh\u1eafc nghi\u1ec7t.<\/strong>T\u01b0\u01a1ng th\u00edch PoE\/PoE+. <\/p><\/li>\n\n\n\n<li><p><strong>T\u01b0\u01a1ng th\u00edch PoE\/PoE+<\/strong>: N\u1ebfu PLC ho\u1eb7c n\u00fat bi\u00ean y\u00eau c\u1ea7u c\u1ea5p ngu\u1ed3n qua Ethernet, h\u00e3y \u0111\u1ea3m b\u1ea3o Magjack h\u1ed7 tr\u1ee3 <a href=\"https:\/\/resourceslp.szlogic.cn\/vi\/knowledge-center\/ieee-802-3af-vs-ieee-802-3at-vs-ieee-802-3bt\/\" target=\"_blank\" rel=\"\">IEEE 802.3af\/at\/bt<\/a>.<\/p><\/li>\n\n\n\n<li><p><strong>Ch\u1ea9n \u0111o\u00e1n (\u0111\u00e8n LED)<\/strong>: Li\u00ean k\u1ebft\/ho\u1ea1t \u0111\u1ed9ng <a href=\"https:\/\/resourceslp.szlogic.cn\/vi\/knowledge-center\/rj45-connector-with-led-functions\/\" target=\"_blank\" rel=\"\">LED<\/a> cung c\u1ea5p ch\u1ea9n \u0111o\u00e1n t\u1ea1i hi\u1ec7n tr\u01b0\u1eddng nhanh ch\u00f3ng\u2014r\u1ea5t h\u1eefu \u00edch cho vi\u1ec7c b\u1ea3o tr\u00ec m\u1ea1ng SCADA.<\/p><\/li>\n\n\n\n<li><p><strong>H\u1ec7 sinh th\u00e1i nh\u00e0 cung c\u1ea5p &amp; v\u00f2ng \u0111\u1eddi<\/strong>: \u0110\u1ed1i v\u1edbi t\u1ef1 \u0111\u1ed9ng h\u00f3a c\u00f4ng nghi\u1ec7p, h\u00e3y ch\u1ecdn c\u00e1c \u0111\u1ea7u n\u1ed1i t\u1eeb c\u00e1c nh\u00e0 cung c\u1ea5p \u0111\u00e1ng tin c\u1eady <a href=\"https:\/\/www.l-p.com\/\" target=\"_blank\" rel=\"\">nh\u00e0 cung c\u1ea5p<\/a> c\u00f3 h\u1ed7 tr\u1ee3 v\u00f2ng \u0111\u1eddi s\u1ea3n ph\u1ea9m d\u00e0i.<\/p><\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">\ud83d\udd01 M\u1eb9o t\u00edch h\u1ee3p cho giao di\u1ec7n Ethernet PLC\u2013SCADA<\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p><strong>Ph\u00e2n t\u00e1ch l\u01b0u l\u01b0\u1ee3ng m\u1ea1ng Ethernet<\/strong>: \u0110\u1ed1i v\u1edbi c\u00e1c li\u00ean k\u1ebft SCADA, h\u00e3y gi\u1eef l\u01b0u l\u01b0\u1ee3ng \u0111i\u1ec1u khi\u1ec3n ri\u00eang bi\u1ec7t v\u1edbi l\u01b0u l\u01b0\u1ee3ng v\u0103n ph\u00f2ng; s\u1eed d\u1ee5ng VLAN ho\u1eb7c c\u00e1c b\u1ed9 chuy\u1ec3n m\u1ea1ch v\u1eadt l\u00fd ri\u00eang bi\u1ec7t \u0111\u1ec3 gi\u1ea3m \u0111\u1ed9 tr\u1ec5 v\u00e0 tr\u00e1nh nhi\u1ec5u.<\/p><\/li>\n\n\n\n<li><p><strong>\u0110i d\u00e2y c\u00e1p v\u00e0 n\u1ed1i \u0111\u1ea5t<\/strong>: Tr\u00e1nh \u0111i c\u00e1p Ethernet song song v\u1edbi c\u00e1c \u0111\u01b0\u1eddng d\u00e2y \u0111i\u1ec7n \u00e1p cao ho\u1eb7c d\u00f2ng \u0111i\u1ec7n l\u1edbn. S\u1eed d\u1ee5ng c\u00e1p c\u00f3 l\u1edbp ch\u1eafn v\u00e0 n\u1ed1i \u0111\u1ea5t v\u1ecf thi\u1ebft b\u1ecb \u0111\u1ec3 gi\u1ea3m thi\u1ec3u v\u00f2ng n\u1ed1i \u0111\u1ea5t.<\/p><\/li>\n\n\n\n<li><p><strong>S\u1eed d\u1ee5ng <\/strong><a href=\"https:\/\/www.l-p.com\/products\/491473.htm\" target=\"_blank\" rel=\"\"><strong>Magjack \u0111\u1ea1t chu\u1ea9n c\u00f4ng nghi\u1ec7p<\/strong><\/a>: Ch\u1ecdn c\u00e1c \u0111\u1ea7u n\u1ed1i Magjack \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf theo ti\u00eau chu\u1ea9n c\u00f4ng nghi\u1ec7p (v\u1ec1 nhi\u1ec7t \u0111\u1ed9, rung \u0111\u1ed9ng, \u0111\u1ed9 b\u00e1m ch\u1eafc tr\u00ean bo m\u1ea1ch) nh\u1eb1m tr\u00e1nh h\u1ecfng h\u00f3c trong m\u00f4i tr\u01b0\u1eddng kh\u1eafc nghi\u1ec7t.<\/p><\/li>\n\n\n\n<li><p><strong>Ch\u1ea9n \u0111o\u00e1n &amp; gi\u00e1m s\u00e1t \u0111\u1ecbnh k\u1ef3<\/strong>: S\u1eed d\u1ee5ng \u0111\u00e8n LED li\u00ean k\u1ebft\/ho\u1ea1t \u0111\u1ed9ng v\u00e0 gi\u00e1m s\u00e1t m\u1ea1ng \u0111\u1ec3 ph\u00e1t hi\u1ec7n c\u00e1c l\u1edbp v\u1eadt l\u00fd suy gi\u1ea3m (t\u0103ng s\u1ed1 l\u1ea7n th\u1eed l\u1ea1i g\u00f3i tin, m\u1ea5t li\u00ean k\u1ebft) tr\u01b0\u1edbc khi ch\u00fang \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn hi\u1ec7u n\u0103ng SCADA.<\/p><\/li>\n\n\n\n<li><p><strong>Thi\u1ebft k\u1ebf d\u1ef1 ph\u00f2ng v\u00e0 an to\u00e0n<\/strong>: \u0110\u1ed1i v\u1edbi c\u00e1c li\u00ean k\u1ebft PLC\u2194SCADA quan tr\u1ecdng, h\u00e3y xem x\u00e9t c\u00e1c \u0111\u01b0\u1eddng d\u1eabn m\u1ea1ng d\u1ef1 ph\u00f2ng ho\u1eb7c c\u1ed5ng Magjack k\u00e9p \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o t\u00ednh li\u00ean t\u1ee5c trong tr\u01b0\u1eddng h\u1ee3p \u0111\u1ea7u n\u1ed1i ho\u1eb7c c\u00e1p b\u1ecb h\u1ecfng.<\/p><\/li>\n\n\n\n<li><p><strong>B\u1ea3o tr\u00ec ch\u1ee7 \u0111\u1ed9ng<\/strong>: Thay th\u1ebf c\u00e1c \u0111\u1ea7u n\u1ed1i \u0111\u00e3 c\u0169, ki\u1ec3m tra \u0111\u1ea7u n\u1ed1i c\u00e1p v\u00e0 ki\u1ec3m tra d\u1ea5u hi\u1ec7u \u0103n m\u00f2n ho\u1eb7c l\u1ecfng l\u1ebbo v\u1ec1 m\u1eb7t c\u01a1 h\u1ecdc\u2014s\u1ef1 ch\u00fa \u00fd n\u00e0y t\u1edbi l\u1edbp v\u1eadt l\u00fd s\u1ebd n\u00e2ng cao \u0111\u1ed9 tin c\u1eady t\u1ed5ng th\u1ec3 c\u1ee7a h\u1ec7 th\u1ed1ng SCADA.<\/p><\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">\ud83d\udd01 LINK-PP h\u1ed7 tr\u1ee3 nh\u01b0 th\u1ebf n\u00e0o cho c\u00e1c giao di\u1ec7n Ethernet PLC \u2194 SCADA \u0111\u00e1ng tin c\u1eady<\/h2>\n\n\n\n<figure class=\"wp-block-image aligncenter size-large\"><img decoding=\"async\" width=\"1024\" height=\"608\" src=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/8d83e1e985fc4ac19662aa3c55ffb111-1024x608.webp\" alt=\"LPJG0926HENL PoE+ RJ45 Connector\" class=\"wp-image-4624\" srcset=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/8d83e1e985fc4ac19662aa3c55ffb111-1024x608.webp 1024w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/8d83e1e985fc4ac19662aa3c55ffb111-300x178.webp 300w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/8d83e1e985fc4ac19662aa3c55ffb111-768x456.webp 768w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/8d83e1e985fc4ac19662aa3c55ffb111-18x12.webp 18w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/8d83e1e985fc4ac19662aa3c55ffb111.webp 1200w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">T\u1ea1i LINK-PP, ch\u00fang t\u00f4i cung c\u1ea5p danh m\u1ee5c r\u1ed9ng c\u00e1c s\u1ea3n ph\u1ea9m <a target=\"_blank\" rel=\"\" href=\"https:\/\/www.l-p.com\/store-17492-integrated-rj45-connector.htm\">b\u1ed9 k\u1ebft n\u1ed1i RJ45 Magjack <\/a>\u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf \u0111\u1eb7c bi\u1ec7t cho t\u1ef1 \u0111\u1ed9ng h\u00f3a c\u00f4ng nghi\u1ec7p, bao g\u1ed3m c\u00e1c m\u1eabu c\u00f3 cu\u1ed9n c\u1ea3m t\u00edch h\u1ee3p, h\u1ed7 tr\u1ee3 PoE\/PoE+, \u0111\u1ed9 b\u00e1m ch\u1eafc c\u01a1 h\u1ecdc cao v\u00e0 x\u1ebfp h\u1ea1ng nhi\u1ec7t \u0111\u1ed9 c\u00f4ng nghi\u1ec7p. V\u00ed d\u1ee5, <a target=\"_blank\" rel=\"\" href=\"https:\/\/www.l-p.com\/products\/439792.htm\">LPJG0926HENL<br><\/a> \u0111\u01b0\u1ee3c \u0111\u1eb7c bi\u1ec7t nh\u1ea5n m\u1ea1nh do t\u00ednh ph\u00f9 h\u1ee3p c\u1ee7a n\u00f3 trong c\u00e1c \u1ee9ng d\u1ee5ng t\u1ef1 \u0111\u1ed9ng h\u00f3a c\u00f4ng nghi\u1ec7p v\u00e0 c\u1ed5ng k\u1ebft n\u1ed1i IoT. <\/p>\n\n\n\n<p class=\"wp-block-paragraph\">B\u1eb1ng c\u00e1ch l\u1ef1a ch\u1ecdn \u0111\u00fang Magjack t\u1eeb LINK-PP, c\u00e1c k\u1ef9 s\u01b0 thi\u1ebft k\u1ebf h\u1ec7 th\u1ed1ng c\u00f3 th\u1ec3 \u0111\u1ea3m b\u1ea3o r\u1eb1ng \u0111\u01b0\u1eddng truy\u1ec1n th\u00f4ng gi\u1eefa PLC v\u00e0 SCADA lu\u00f4n b\u1ec1n b\u1ec9, ch\u1ed1ng nhi\u1ec5u hi\u1ec7u qu\u1ea3 v\u00e0 s\u1eb5n s\u00e0ng cho t\u01b0\u01a1ng lai\u2014\u0111\u00e1p \u1ee9ng c\u00e1c v\u00f2ng \u0111\u1eddi d\u00e0i \u0111\u1eb7c tr\u01b0ng trong c\u00e1c h\u1ec7 th\u1ed1ng t\u1ef1 \u0111\u1ed9ng h\u00f3a.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\ud83d\udd01 K\u1ebft lu\u1eadn<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">T\u00f3m l\u1ea1i, m\u1eb7c d\u00f9 ph\u1ea7n m\u1ec1m v\u00e0 giao th\u1ee9c truy\u1ec1n th\u00f4ng PLC \u2194 SCADA th\u01b0\u1eddng nh\u1eadn \u0111\u01b0\u1ee3c nhi\u1ec1u s\u1ef1 ch\u00fa \u00fd, th\u00ec giao di\u1ec7n v\u1eadt l\u00fd c\u0169ng quan tr\u1ecdng kh\u00f4ng k\u00e9m. <strong>c\u1ed5ng RJ45 Magjack<\/strong> \u0111\u00f3ng vai tr\u00f2 n\u1ec1n t\u1ea3ng b\u1eb1ng c\u00e1ch cung c\u1ea5p giao di\u1ec7n Ethernet \u0111\u1ea3m b\u1ea3o t\u00ednh to\u00e0n v\u1eb9n t\u00edn hi\u1ec7u, c\u00e1ch ly v\u00e0 kh\u1ea3 n\u0103ng ch\u1ecbu \u0111\u1ef1ng trong c\u00e1c m\u00f4i tr\u01b0\u1eddng c\u00f4ng nghi\u1ec7p kh\u1eafc nghi\u1ec7t. Khi \u0111\u01b0\u1ee3c l\u1ef1a ch\u1ecdn v\u00e0 t\u00edch h\u1ee3p \u0111\u00fang c\u00e1ch, Magjack g\u00f3p ph\u1ea7n tr\u1ef1c ti\u1ebfp v\u00e0o \u0111\u1ed9 tin c\u1eady, th\u1eddi gian ho\u1ea1t \u0111\u1ed9ng v\u00e0 hi\u1ec7u n\u0103ng c\u1ee7a c\u00e1c h\u1ec7 th\u1ed1ng SCADA v\u00e0 m\u1ea1ng t\u1ef1 \u0111\u1ed9ng h\u00f3a.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u0110\u1ed1i v\u1edbi c\u00e1c k\u1ef9 s\u01b0 v\u00e0 nh\u00e0 thi\u1ebft k\u1ebf l\u00e0m vi\u1ec7c trong l\u0129nh v\u1ef1c t\u1ef1 \u0111\u1ed9ng h\u00f3a c\u00f4ng nghi\u1ec7p, vi\u1ec7c x\u00e1c \u0111\u1ecbnh \u0111\u00fang Magjack kh\u00f4ng ch\u1ec9 l\u00e0 m\u1ed9t l\u1ef1a ch\u1ecdn linh ki\u1ec7n\u2014m\u00e0 c\u00f2n l\u00e0 m\u1ed9t quy\u1ebft \u0111\u1ecbnh chi\u1ebfn l\u01b0\u1ee3c \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn th\u00e0nh c\u00f4ng v\u1eadn h\u00e0nh l\u00e2u d\u00e0i. V\u1edbi <a target=\"_blank\" rel=\"\" href=\"https:\/\/www.l-p.com\/store-17492-integrated-rj45-connector.htm\">Magjack \u0111\u1ea1t chu\u1ea9n c\u00f4ng nghi\u1ec7p c\u1ee7a LINK-PP<\/a>, b\u1ea1n c\u00f3 th\u1ec3 x\u00e2y d\u1ef1ng c\u00e1c li\u00ean k\u1ebft Ethernet PLC-to-SCADA <strong>th\u00f4ng minh h\u01a1n, k\u1ebft n\u1ed1i t\u1ed1t h\u01a1n v\u00e0 \u0111\u00e1ng tin c\u1eady h\u01a1n<\/strong>.<\/p>","protected":false},"excerpt":{"rendered":"<p>Kh\u00e1m ph\u00e1 c\u00e1ch c\u00e1c \u0111\u1ea7u n\u1ed1i RJ45 Magjack k\u00edch ho\u1ea1t kh\u1ea3 n\u0103ng truy\u1ec1n th\u00f4ng Ethernet m\u1ea1nh m\u1ebd gi\u1eefa c\u00e1c PLC v\u00e0 m\u00e1y ch\u1ee7 SCADA trong t\u1ef1 \u0111\u1ed9ng h\u00f3a c\u00f4ng nghi\u1ec7p, \u0111\u1ea3m b\u1ea3o \u0111\u1ed9 nguy\u00ean v\u1eb9n t\u00edn hi\u1ec7u v\u00e0 \u0111\u1ed9 tin c\u1eady h\u1ec7 th\u1ed1ng.<\/p>","protected":false},"author":1,"featured_media":4625,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[1],"tags":[22],"class_list":["post-4626","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-knowledge-center","tag-integrated-rj45-connectors"],"blocksy_meta":[],"acf":[],"_links":{"self":[{"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/posts\/4626","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/comments?post=4626"}],"version-history":[{"count":4,"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/posts\/4626\/revisions"}],"predecessor-version":[{"id":11347,"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/posts\/4626\/revisions\/11347"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/media\/4625"}],"wp:attachment":[{"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/media?parent=4626"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/categories?post=4626"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/tags?post=4626"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}