{"id":12015,"date":"2013-01-14T15:53:21","date_gmt":"2013-01-14T08:53:21","guid":{"rendered":"https:\/\/banbientan.com\/?p=12015"},"modified":"2013-01-14T15:53:21","modified_gmt":"2013-01-14T08:53:21","slug":"lop-dieu-khien-cua-mang-fa","status":"publish","type":"post","link":"https:\/\/hunglong.banbientan.com\/?p=12015","title":{"rendered":"L\u1edbp \u0111i\u1ec1u khi\u1ec3n c\u1ee7a m\u1ea1ng FA"},"content":{"rendered":"

Truy\u1ec1n th\u00f4ng c\u00e1c th\u00f4ng b\u00e1o\u00a0<\/object><\/strong><\/span>
\n\u1ede ph\u00e2n l\u1edbp \u0111i\u1ec1u khi\u1ec3n, truy\u1ec1n th\u00f4ng c\u00e1c th\u00f4ng \u0111i\u1ec7p l\u00e0 c\u00e1ch th\u1ee9c ph\u1ed5 bi\u1ebfn \u0111\u1ec3 chia s\u1ebd d\u1eef li\u1ec7u. N\u00f3 c\u00f3 th\u1ec3 g\u1edfi c\u00e1c l\u1ec7nh (Instruction) t\u1eeb m\u1ed9t b\u1ed9 \u0111i\u1ec1u khi\u1ec3n ( <\/strong><\/a><\/span>node<\/span><\/strong><\/a>)<\/strong><\/a> n\u00e0y \u0111\u1ebfn b\u1ed9 \u0111i\u1ec1u khi\u1ec3n (<\/a><\/span>node<\/span><\/a>)<\/a> kh\u00e1c trong m\u1ea1ng FA \u0111\u1ec3 th\u1ef1c hi\u1ec7n \u0111i\u1ec1u khi\u1ec3n nh\u01b0 Ch\u1ea1y v\u00e0 D\u1eebng, truy\u1ec1n v\u00e0 nh\u1eadn d\u1eef li\u1ec7u.
\n<\/span>Nh\u1eefng \u0111o\u1ea1n ch\u01b0\u01a1ng tr\u00ecnh x\u1eed l\u00fd \u0111\u00e3 \u0111\u01b0\u1ee3c ng\u1ea7m vi\u1ebft s\u1eb5n trong PLC, \u0111\u01b0\u1ee3c th\u1ef1c thi t\u1ea1i t\u1eebng th\u1eddi \u0111i\u1ec3m khi l\u1ec7nh \u0111\u01b0\u1ee3c \u0111\u01b0a ra.
\nPLC nh\u1eadn l\u1ec7nh truy\u1ec1n th\u00f4ng s\u1ebd t\u1ef1 \u0111\u1ed9ng th\u1ef1c hi\u1ec7n c\u00e1c \u0111o\u1ea1n ch\u01b0\u01a1ng tr\u00ecnh x\u1eed l\u00fd ng\u1ea7m \u0111\u00f3 v\u00e0 tr\u1ea3 v\u1ec1 k\u1ebft qu\u1ea3 nh\u01b0 m\u1ed9t \u0111\u00e1p \u1ee9ng. Ng\u01b0\u1eddi s\u1eed d\u1ee5ng kh\u00f4ng c\u1ea7n ph\u1ea3i l\u1eadp tr\u00ecnh th\u00eam ph\u1ea7n truy\u1ec1n nh\u1eadn. <\/span>
\nS\u1eed d\u1ee5ng d\u1ecbch v\u1ee5 truy\u1ec1n th\u00f4ng th\u00f4ng \u0111i\u1ec7p gi\u00fap cho h\u1ec7 th\u1ed1ng \u0111\u01b0\u1ee3c \u0111i\u1ec1u khi\u1ec3n b\u1edfi nhi\u1ec1u PLC ho\u1ea1t \u0111\u1ed9ng gi\u1ed1ng nh\u01b0 khi \u0111\u01b0\u1ee3c \u0111i\u1ec1u khi\u1ec3n t\u1eeb m\u1ed9t PLC.\u00a0<\/span>
\nTruy\u1ec1n th\u00f4ng li\u00ean k\u1ebft d\u1eef li\u1ec7u.<\/object><\/span><\/span><\/strong>
\nTruy\u1ec1n th\u00f4ng li\u00ean k\u1ebft d\u1eef li\u1ec7u c\u0169ng \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n \u1edf ph\u00e2n l\u1edbp \u0111i\u1ec1u khi\u1ec3n c\u1ee7a m\u1ea1ng FA. Ch\u00fang cho ph\u00e9p chia s\u1ebd d\u1eef li\u1ec7u gi\u1eefa nhi\u1ec1u b\u1ed9 \u0111i\u1ec1u khi\u1ec3n PLC (<\/a><\/span>nodes<\/span><\/a>)<\/a> trong m\u1ea1ng FA.
\n<\/span>V\u00f9ng d\u1eef li\u1ec7u li\u00ean k\u1ebft (data link) cho vi\u1ec7c chia s\u1ebd d\u1eef li\u1ec7u \u0111\u01b0\u1ee3c \u0111\u1ecbnh s\u1eb5n, v\u00e0 \u0111\u01b0\u1ee3c d\u00f9ng \u0111\u1ec3 trao \u0111\u1ed5i d\u1eef li\u1ec7u t\u01b0\u01a1ng h\u1ed7 l\u1eabn nhau.
\nTh\u00f4ng tin (tr\u1ea1ng th\u00e1i) nh\u01b0 t\u00ecnh tr\u1ea1ng ho\u1ea1t \u0111\u1ed9ng c\u1ee7a c\u00e1c b\u1ed9 \u0111i\u1ec1u khi\u1ec3n c\u0169ng c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c trao \u0111\u1ed5i l\u1eabn nhau c\u00f9ng m\u1ed9t l\u00fac.
\nNh\u1eefng d\u1eef li\u1ec7u trao \u0111\u1ed5i n\u00e0y b\u1eaft \u0111\u1ea7u t\u1ef1 \u0111\u1ed9ng th\u1ef1c hi\u1ec7n ngay khi b\u1ed9 \u0111i\u1ec1u khi\u1ec3n b\u1eaft \u0111\u1ea7u ch\u1ea1y, v\u00e0 \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n m\u1ed9t c\u00e1ch tu\u1ea7n ho\u00e0n trong su\u1ed1t th\u1eddi gian ho\u1ea1t \u0111\u1ed9ng, ng\u01b0\u1eddi s\u1eed d\u1ee5ng kh\u00f4ng c\u1ea7n thi\u1ebft ph\u1ea3i vi\u1ebft ch\u01b0\u01a1ng tr\u00ecnh truy\u1ec1n th\u00f4ng tr\u00ean b\u1ed9 \u0111i\u1ec1u khi\u1ec3n PLC, m\u00e0 v\u1eabn c\u00f3 th\u1ec3 chia s\u1ebb d\u1eef li\u1ec7u.
\nS\u1eed d\u1ee5ng truy\u1ec1n th\u00f4ng li\u00ean k\u1ebft d\u1eef li\u1ec7u gi\u00fap kh\u00f4ng ph\u1ea3i vi\u1ebft ch\u01b0\u01a1ng tr\u00ecnh trao \u0111\u1ed5i d\u1eef li\u1ec7u tr\u00ean nh\u1eefng b\u1ed9 \u0111i\u1ec1u khi\u1ec3n t\u01b0\u01a1ng \u1ee9ng, \u0111i\u1ec1u n\u00e0y l\u00e0m dung l\u01b0\u1ee3ng ch\u01b0\u01a1ng tr\u00ecnh gi\u1ea3m.<\/span>
\nM\u1ea1ng EtherCAT<\/object><\/strong><\/span>
\nEtherCat l\u00e0 m\u1ed9t s\u1ea3n ph\u1ea9m c\u1ee7a m\u1ea1ng FA thu\u1ed9c ph\u00e2n l\u1edbp \u0110i\u1ec1u khi\u1ec3n c\u00f3 \u0111\u1eb7c t\u00ednh c\u1ee7a m\u1ed9t m\u1ea1ng m\u1edf.<\/span>\u00a0
\n<\/span>\u0110\u00e2y l\u00e0 m\u1ed9t m\u1ea1ng m\u1edf cho \u0111i\u1ec1u khi\u1ec3n chuy\u1ec3n \u0111\u1ed9ng (Servo, bi\u1ebfn t\u1ea7n), h\u1ed7 tr\u1ee3 truy\u1ec1n th\u00f4ng \u0111i\u1ec7p v\u00e0 truy\u1ec1n th\u00f4ng I\/O \u1edf xa, cho ph\u00e9p \u0111i\u1ec1u khi\u1ec3n c\u00e1c chuy\u1ec3n \u0111\u1ed9ng v\u1edbi t\u1ed1c \u0111\u1ed9 cao v\u00e0 \u0111\u1ed9 ch\u00ednh x\u00e1c cao\u00a0<\/span>khi k\u1ebft n\u1ed1i\u00a0<\/span>v\u1edbi c\u00e1c b\u1ed9 \u0111i\u1ec1u khi\u1ec3n Servo hay bi\u1ebfn t\u1ea7n (Inverter), c\u00e1c c\u1ea3m bi\u1ebfn h\u00ecnh \u1ea3nh v\u00e0 c\u00e1c thi\u1ebft b\u1ecb v\u00e0o\/ra \u0111\u1ec3 \u0111i\u1ec1u khi\u1ec3n m\u00e1y m\u00f3c.
\n\u0110\u01b0\u1eddng truy\u1ec1n t\u00edn hi\u1ec7u s\u1eed d\u1ee5ng c\u00e1c \u0111\u1ea7u n\u1ed1i v\u00e0 c\u00e1p c\u00f3 b\u1ecdc gi\u00e1p ch\u1ed1ng nhi\u1ec3u, \u0111\u1ea7u k\u1ebft n\u1ed1i l\u00e0 RJ45 th\u00f4ng d\u1ee5ng.
\n<\/span>
\n<\/span><\/span>B\u1ed9 \u0111i\u1ec3u khi\u1ec3n t\u01b0\u01a1ng th\u00edch v\u1edbi m\u1ea1ng EtherCAT g\u1ecdi l\u00e0 b\u1ed9 \u0111i\u1ec1u khi\u1ec3n m\u00e1y t\u1ef1 \u0111\u1ed9ng (Machine Automation Controller – d\u00f2ng s\u1ea3n ph\u1ea9m NJ) v\u00e0 PLC h\u1ecd CJ2.
\nC\u00e1c ph\u00e2n nh\u00e1nh Slave c\u0169ng c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng k\u1ebft h\u1ee3p v\u1edbi d\u00f2ng s\u1ea3n ph\u1ea9m NJ v\u00e0 EtherCAT \u0111\u1ec3 t\u1ea1o th\u00e0nh c\u00e1c c\u1ea5u h\u00ecnh t\u1ed1i \u01b0u.<\/span>
\nM\u1ea1ng Controller Link<\/object><\/strong><\/span>
\nController link l\u00e0 m\u1ed9t s\u1ea3n ph\u1ea9m m\u1ea1ng FA c\u1ee7a Omron, thu\u1ed9c ph\u00e2n l\u1edbp \u0110i\u1ec1u khi\u1ec3n.
\n<\/span>N\u00f3 h\u1ed7 tr\u1ee3 truy\u1ec1n th\u00f4ng c\u00e1c th\u00f4ng \u0111i\u1ec7p v\u00e0 truy\u1ec1n th\u00f4ng k\u1ebft n\u1ed1i d\u1eef li\u1ec7u, v\u00e0 t\u01b0\u01a1ng th\u00edch v\u1edbi h\u1ea7u h\u1ebft c\u00e1c d\u00f2ng PLC c\u1ee7a Omron. Tuy nhi\u00ean n\u00f3 kh\u00f4ng th\u1ec3 k\u1ebft n\u1ed1i v\u1edbi c\u00e1c s\u1ea3n ph\u1ea9m c\u1ee7a nh\u1eefng h\u00e3ng kh\u00e1c do n\u00f3 d\u00f9ng giao th\u1ee9c truy\u1ec1n ri\u00eang c\u1ee7a Omron.
\nD\u00e2y d\u1eabn t\u00edn hi\u1ec7u truy\u1ec1n th\u00f4ng l\u00e0 lo\u1ea1i c\u00e1p \u0111\u00f4i xo\u1eafn chuy\u00ean d\u1ee5ng. Tuy nhi\u00ean, s\u1eed d\u1ee5ng m\u1ed9t b\u1ed9 chuy\u1ec3n ti\u1ebfp (r\u1ebd nh\u00e1nh) cho ph\u00e9p truy\u1ec1n t\u00edn hi\u1ec7u b\u1eb1ng c\u00e1p quang v\u00e0 r\u1ebd nh\u00e1nh T, r\u1ea5t linh ho\u1ea1t \u0111\u1ec3 x\u00e2y d\u1ef1ng m\u1ed9t h\u1ec7 th\u1ed1ng m\u1ea1ng
\nController Link t\u01b0\u01a1ng th\u00edch v\u1edbi c\u00e1c d\u00f2ng PLC nh\u01b0: CS1\/CJ1\/CJ2\/CP1H\/C200H\/CQM1. S\u1eed d\u1ee5ng c\u00e1c bo m\u1ea1ch controller link g\u1eafn v\u00e0o m\u00e1y t\u00ednh qua khe ISA\/PCI (bus), cho ph\u00e9p truy\u1ec1n d\u1eef li\u1ec7u gi\u1eefa m\u00e1y t\u00ednh v\u00e0 PLC.<\/span>
\nC\u00e1c s\u1ea3n ph\u1ea9m truy\u1ec1n th\u00f4ng n\u1ed1i ti\u1ebfp<\/object><\/strong><\/span>
\nM\u1ed9t s\u1ed1 thi\u1ebft b\u1ecb \u0111i\u1ec1u khi\u1ec3n v\u00e0 ch\u1ee9a th\u00f4ng tin nh\u01b0 b\u1ed9 \u0111i\u1ec1u khi\u1ec3n nhi\u1ec7t \u0111\u1ed9,b\u1ed9 \u0111\u1ecdc m\u00e3 v\u1ea1ch\u00a0<\/a>v\u00e0 c\u00e1c b\u1ed9 c\u00e2n \u0111i\u1ec7n t\u1eed c\u00f3 ch\u1ee9c n\u0103ng truy\u1ec1n th\u00f4ng n\u1ed1i ti\u1ebfp, cho ph\u00e9p truy\u1ec1n\/ nh\u1eadn d\u1eef li\u1ec7u v\u00e0 nh\u1eefng l\u1ec7nh \u0111\u01a1n gi\u1ea3n, t\u1edbi \/ t\u1eeb nh\u1eefng b\u1ed9 \u0111i\u1ec1u khi\u1ec3n qua m\u1ea1ng FA.
\n<\/span>\u0110\u1eb7c t\u00ednh \u0111i\u1ec7n c\u1ee7a truy\u1ec1n th\u00f4ng n\u1ed1i ti\u1ebfp chia ra c\u00e1c giao di\u1ec7n RS232C v\u00e0 RS422\/485. So v\u1edbi ki\u1ec3u truy\u1ec1n RS232C th\u00ec RS422\/485 cho ph\u00e9p truy\u1ec1n d\u1eef li\u1ec7u \u0111\u01b0\u1ee3c kho\u1ea3ng c\u00e1ch xa h\u01a1n. H\u01a1n n\u1eefa, RS485 cho ph\u00e9p truy\u1ec1n \u0111a \u0111i\u1ec3m v\u00e0 \u0111a k\u1ebft n\u1ed1i.<\/span>
\n\u0110\u1ec3 th\u1ef1c hi\u1ec7n truy\u1ec1n d\u1eef li\u1ec7u v\u1edbi nh\u1eefng thi\u1ebft b\u1ecb n\u00e0y, v\u1ec1 ph\u00eda PLC y\u00eau c\u1ea7u ph\u1ea3i c\u00f3 c\u1ed5ng truy\u1ec3n th\u00f4ng n\u1ed1i ti\u1ebfp th\u00f4ng d\u1ee5ng, t\u01b0\u01a1ng th\u00edch v\u1edbi c\u00e1c c\u1ed5ng truy\u1ec1n th\u00f4ng c\u1ea7n giao ti\u1ebfp ho\u1eb7c m\u1ed9t module truy\u1ec1n th\u00f4ng chuy\u00ean d\u1ee5ng.
\nR\u1ea5t nhi\u1ec1u lo\u1ea1i PLC c\u1ee7a Omron t\u00edch h\u1ee3p s\u1eb5n c\u1ed5ng truy\u1ec1n th\u00f4ng n\u1ed1i ti\u1ebfp, n\u00f3 c\u00f3 th\u1ec3 k\u1ebft n\u1ed1i \u0111\u1ebfn c\u00e1c thi\u1ebft b\u1ecb t\u01b0\u01a1ng th\u00edch v\u1edbi chu\u1ea9n truy\u1ec1n th\u00f4ng n\u1ed1i ti\u1ebfp RS232. Do ch\u1ec9 c\u00f3 m\u1ed9t v\u00e0i th\u1ee7 t\u1ee5c (giao th\u1ee9c) truy\u1ec1n th\u00f4ng t\u01b0\u01a1ng th\u00edch, trong nhi\u1ec1u \u1ee9ng d\u1ee5ng ph\u1ee9c t\u1ea1p c\u1ea7n ph\u1ea3i trang b\u1ecb module truy\u1ec1n th\u00f4ng n\u1ed1i ti\u1ebfp chuy\u00ean d\u1ee5ng k\u1ebft n\u1ed1i v\u1edbi c\u00e1c thi\u1ebft b\u1ecb RS232C v\u00e0 thi\u1ebft b\u1ecb RS422\/485.<\/span><\/p>\n","protected":false},"excerpt":{"rendered":"

Truy\u1ec1n th\u00f4ng c\u00e1c th\u00f4ng b\u00e1o\u00a0 \u1ede ph\u00e2n l\u1edbp \u0111i\u1ec1u khi\u1ec3n, truy\u1ec1n th\u00f4ng c\u00e1c th\u00f4ng \u0111i\u1ec7p l\u00e0 c\u00e1ch th\u1ee9c ph\u1ed5 bi\u1ebfn \u0111\u1ec3 chia s\u1ebd d\u1eef li\u1ec7u. N\u00f3 c\u00f3 th\u1ec3 g\u1edfi c\u00e1c l\u1ec7nh (Instruction) t\u1eeb m\u1ed9t b\u1ed9 \u0111i\u1ec1u khi\u1ec3n ( node) n\u00e0y \u0111\u1ebfn b\u1ed9 \u0111i\u1ec1u khi\u1ec3n (node) kh\u00e1c trong m\u1ea1ng FA \u0111\u1ec3 th\u1ef1c hi\u1ec7n \u0111i\u1ec1u khi\u1ec3n nh\u01b0 […]<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[11200],"tags":[],"class_list":["post-12015","post","type-post","status-publish","format-standard","hentry","category-bai-12-co-ban-ve-mang-tu-dong-hoa-nha-may-fa"],"_links":{"self":[{"href":"https:\/\/hunglong.banbientan.com\/index.php?rest_route=\/wp\/v2\/posts\/12015","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/hunglong.banbientan.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/hunglong.banbientan.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/hunglong.banbientan.com\/index.php?rest_route=\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/hunglong.banbientan.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=12015"}],"version-history":[{"count":0,"href":"https:\/\/hunglong.banbientan.com\/index.php?rest_route=\/wp\/v2\/posts\/12015\/revisions"}],"wp:attachment":[{"href":"https:\/\/hunglong.banbientan.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=12015"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/hunglong.banbientan.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=12015"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/hunglong.banbientan.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=12015"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}