{"id":4778,"date":"2024-02-07T16:24:26","date_gmt":"2024-02-07T08:24:26","guid":{"rendered":"https:\/\/gcanbus.com\/?p=4778"},"modified":"2024-02-07T16:24:26","modified_gmt":"2024-02-07T08:24:26","slug":"the-specific-composition-of-can-messages","status":"publish","type":"post","link":"https:\/\/gcanbus.com\/ko\/the-specific-composition-of-can-messages\/","title":{"rendered":"CAN \uba54\uc2dc\uc9c0\uc758 \uad6c\uccb4\uc801\uc778 \uad6c\uc131"},"content":{"rendered":"

CAN(\ucee8\ud2b8\ub864\ub7ec \uc601\uc5ed \ub124\ud2b8\uc6cc\ud06c) \uba54\uc2dc\uc9c0\ub294 CAN \ubc84\uc2a4\uc5d0\uc11c \uc804\uc1a1\ub418\ub294 \ub370\uc774\ud130 \ud328\ud0b7\uc73c\ub85c, \ucc28\ub7c9\uacfc \ub2e4\ub978 \ud558\ub4dc\uc6e8\uc5b4 \uc7a5\uce58 \uac04\uc758 \ud1b5\uc2e0\uc5d0 \uc0ac\uc6a9\ub429\ub2c8\ub2e4. \uc77c\ubc18\uc801\uc778 CAN \uba54\uc2dc\uc9c0\ub294 \uc5ec\ub7ec \ubd80\ubd84\uc73c\ub85c \uad6c\uc131\ub418\uba70, \uad6c\uccb4\uc801\uc778 \uad6c\uc131\uc740 CAN \ud504\ub85c\ud1a0\ucf5c \ubc84\uc804\uacfc \ud2b9\uc815 \uc560\ud50c\ub9ac\ucf00\uc774\uc158\uc5d0 \ub530\ub77c \ub2ec\ub77c\uc9c8 \uc218 \uc788\uc2b5\ub2c8\ub2e4. \ub2e4\uc74c\uc740 \ud45c\uc900 CAN 2.0 \ud504\ub85c\ud1a0\ucf5c\uc744 \uae30\ubc18\uc73c\ub85c \ud55c CAN \uba54\uc2dc\uc9c0\uc640 \uadf8 \uad6c\uc131 \uc694\uc18c\uc758 \uc608\uc2dc\uc785\ub2c8\ub2e4:<\/p>\n<\/div><\/div><\/div><\/div>

1. \ud504\ub808\uc784 \uc2dc\uc791(SOF):<\/p>\n

\uc774\uac83\uc740 \uc0c8 \uba54\uc2dc\uc9c0\uc758 \uc2dc\uc791\uc744 \ud45c\uc2dc\ud558\ub294 \ud2b9\uc218\ud55c \ube44\ud2b8 \ud328\ud134\uc785\ub2c8\ub2e4. \uc77c\ubc18\uc801\uc73c\ub85c \uc6b0\uc131 \ube44\ud2b8\uc785\ub2c8\ub2e4(CAN\uc5d0\uc11c \uc6b0\uc131 \ube44\ud2b8\ub294 \uc77c\ubc18\uc801\uc73c\ub85c \ub17c\ub9ac 0\uc774\uace0 \uc5f4\uc131 \ube44\ud2b8\ub294 \ub17c\ub9ac 1\uc774\uc9c0\ub9cc, \uc774\ub294 \ud2b9\uc815 \ubb3c\ub9ac \uacc4\uce35 \uad6c\ud604\uc5d0 \ub530\ub77c \ub2e4\ub985\ub2c8\ub2e4).<\/p>\n

2. \uc911\uc7ac \ud544\ub4dc:<\/p>\n

(1) \uc2dd\ubcc4\uc790: \uc774\uac83\uc740 CAN \uba54\uc2dc\uc9c0\uc5d0\uc11c \uac00\uc7a5 \uc911\uc694\ud55c \ubd80\ubd84 \uc911 \ud558\ub098\uc774\uba70 \uc11c\ub85c \ub2e4\ub978 \uba54\uc2dc\uc9c0\ub97c \uad6c\ubcc4\ud558\ub294 \ub370 \uc0ac\uc6a9\ub429\ub2c8\ub2e4. CAN 2.0 \ud45c\uc900 \ud615\uc2dd\uc5d0\uc11c \uc2dd\ubcc4\uc790\ub294 11\ube44\ud2b8 \uae38\uc774\uc774\uba70, \ud655\uc7a5 \ud615\uc2dd\uc5d0\uc11c\ub294 29\ube44\ud2b8 \uae38\uc774\uc785\ub2c8\ub2e4(11\ube44\ud2b8 \uae30\ubcf8 ID\uc640 18\ube44\ud2b8 \ud655\uc7a5 ID\ub85c \uad6c\uc131). \uc2dd\ubcc4\uc790\ub294 \uba54\uc2dc\uc9c0\uc758 \uc6b0\uc120\uc21c\uc704\uc640 \uc218\uc2e0\uc790\uac00 \uba54\uc2dc\uc9c0\ub97c \uc778\uc2dd\ud558\ub294 \ubc29\ubc95\uc744 \uacb0\uc815\ud569\ub2c8\ub2e4.<\/p>\n

(2) \uc6d0\uaca9 \uc804\uc1a1 \uc694\uccad \ube44\ud2b8(RTR, \uc6d0\uaca9 \uc804\uc1a1 \uc694\uccad): \uc774 \ube44\ud2b8\ub294 \uba54\uc2dc\uc9c0\uac00 \ub370\uc774\ud130 \ud504\ub808\uc784\uc778\uc9c0 \uc6d0\uaca9 \ud504\ub808\uc784\uc778\uc9c0\ub97c \ub098\ud0c0\ub0c5\ub2c8\ub2e4. \ub370\uc774\ud130 \ud504\ub808\uc784\uc740 \ub370\uc774\ud130\ub97c \uc804\uc1a1\ud558\ub294 \ub370 \uc0ac\uc6a9\ub418\uba70, \uc6d0\uaca9 \ud504\ub808\uc784\uc740 \ub370\uc774\ud130\ub97c \uc694\uccad\ud558\ub294 \ub370 \uc0ac\uc6a9\ub429\ub2c8\ub2e4.<\/p>\n<\/div><\/div><\/div>

\uce94\ubc84\uc2a4 \ud1b5\uc2e0 \ud504\ub85c\ud1a0\ucf5c<\/span><\/p>\n<\/div>

\uc790\ub3d9\ucc28 \uc9c4\ub2e8 \ub514\ucf54\ub529 \ubd84\uc11d \uac1c\ubc1c \ud234<\/span><\/p>\n<\/div>

<\/span><\/div><\/div><\/div><\/div>

3. \uc81c\uc5b4 \ud544\ub4dc:<\/p>\n

(1) \uc2dd\ubcc4\uc790 \ud655\uc7a5 \ube44\ud2b8(IDE, \uc2dd\ubcc4\uc790 \ud655\uc7a5): CAN 2.0B\uc5d0\uc11c \uc774 \ube44\ud2b8\ub294 \uc2dd\ubcc4\uc790\uac00 \ud45c\uc900 \ud615\uc2dd(11\ube44\ud2b8)\uc778\uc9c0 \ud655\uc7a5 \ud615\uc2dd(29\ube44\ud2b8)\uc778\uc9c0\ub97c \ub098\ud0c0\ub0b4\ub294 \ub370 \uc0ac\uc6a9\ub429\ub2c8\ub2e4.<\/p>\n

(2) \uc608\uc57d \ube44\ud2b8: \uc774 \ube44\ud2b8\ub294 \ud5a5\ud6c4 \ud655\uc7a5\uc744 \uc704\ud574 \uc608\uc57d\ub418\uc5b4 \uc788\uc73c\uba70 \ud604\uc7ac \ub300\ubd80\ubd84\uc758 \uc560\ud50c\ub9ac\ucf00\uc774\uc158\uc5d0\uc11c \uc0ac\uc6a9\ub418\uc9c0 \uc54a\uc2b5\ub2c8\ub2e4.<\/p>\n

(3) \ub370\uc774\ud130 \uae38\uc774 \ucf54\ub4dc(DLC, \ub370\uc774\ud130 \uae38\uc774 \ucf54\ub4dc): \uc774 4\ube44\ud2b8 \ud544\ub4dc\ub294 0~8\ubc14\uc774\ud2b8 \ubc94\uc704\uc758 \ub370\uc774\ud130 \ud544\ub4dc\uc5d0 \uc788\ub294 \ubc14\uc774\ud2b8 \uc218\ub97c \ub098\ud0c0\ub0c5\ub2c8\ub2e4.<\/p>\n

4. \ub370\uc774\ud130 \ud544\ub4dc: \uba54\uc2dc\uc9c0\uc758 \uc2e4\uc81c \ub370\uc774\ud130 \ubd80\ubd84\uc785\ub2c8\ub2e4. \uae38\uc774\ub294 DLC\uc5d0 \uc758\ud574 \uacb0\uc815\ub418\uba70 \ucd5c\ub300 8\ubc14\uc774\ud2b8(64\ube44\ud2b8)\uae4c\uc9c0 \uac00\ub2a5\ud569\ub2c8\ub2e4.<\/p>\n<\/div>

<\/span><\/div><\/div><\/div>

5. CRC \ud544\ub4dc(\uc21c\ud658 \uc911\ubcf5 \ud655\uc778 \ud544\ub4dc): CRC\ub294 \uba54\uc2dc\uc9c0 \uc804\uc1a1 \uc624\ub958\ub97c \uac10\uc9c0\ud558\ub294 \ub370 \uc0ac\uc6a9\ub418\ub294 \uac80\uc0ac \ucf54\ub4dc\uc785\ub2c8\ub2e4. \ubc1c\uc2e0 \ub178\ub4dc\ub294 CRC\ub97c \uacc4\uc0b0\ud558\uc5ec \ub370\uc774\ud130\uc5d0 \ucd94\uac00\ud558\uace0, \uc218\uc2e0 \ub178\ub4dc\ub294 \ub3d9\uc77c\ud55c \uc54c\uace0\ub9ac\uc998\uc744 \uc0ac\uc6a9\ud558\uc5ec \ub370\uc774\ud130\uc758 \ubb34\uacb0\uc131\uc744 \ud655\uc778\ud569\ub2c8\ub2e4.<\/p>\n

6. ACK \ud544\ub4dc:<\/p>\n

(1) \uc751\ub2f5 \uac04\uaca9(ACK \uc2ac\ub86f): \uc218\uc2e0 \ub178\ub4dc\uac00 \uc751\ub2f5 \uc2e0\ud638\ub97c \ubcf4\ub0bc \ub54c \uc0ac\uc6a9\ud558\ub294 \ube44\ud2b8 \uc2dc\uac04\uc785\ub2c8\ub2e4.<\/p>\n

(2) \uc751\ub2f5 \uad6c\ubd84\uc790(ACK \uad6c\ubd84\uc790): \uc751\ub2f5 \ud544\ub4dc \ub4a4\uc758 \uc5f4\uc131 \ube44\ud2b8\ub85c, \uc751\ub2f5 \ud544\ub4dc\uc640 \ud504\ub808\uc784\uc758 \ud6c4\uc18d \ub05d\uc744 \uad6c\ubd84\ud558\ub294 \ub370 \uc0ac\uc6a9\ub429\ub2c8\ub2e4.<\/p>\n<\/div><\/div><\/div><\/div>

7. \ud504\ub808\uc784 \ub05d(EOF): \ud558\ub098 \uc774\uc0c1\uc758 \uc5f4\uc131 \ube44\ud2b8\ub85c, \uba54\uc2dc\uc9c0\uc758 \ub05d\uc744 \ud45c\uc2dc\ud569\ub2c8\ub2e4.<\/p>\n

\ud2b9\uc815 CAN \uba54\uc2dc\uc9c0 \uc608\uc2dc(16\uc9c4\uc218\ub85c \ud45c\ud604)\ub294 \ub2e4\uc74c\uacfc \uac19\uc2b5\ub2c8\ub2e4:<\/p>\n

\ud504\ub808\uc784 \uc2dc\uc791: \ud2b9\uc815 \uac12 \uc5c6\uc74c, \ud558\ub4dc\uc6e8\uc5b4\uc5d0 \uc758\ud574 \uac10\uc9c0\ub428<\/p>\n

\uc911\uc7ac \ud544\ub4dc: 123(11\ube44\ud2b8 \uc2dd\ubcc4\uc790\ub85c \uac00\uc815, \uc5ec\uae30\uc11c\ub294 \uc608\uc2dc\uc77c \ubfd0 \uc2e4\uc81c \uac12\uc740 \uc560\ud50c\ub9ac\ucf00\uc774\uc158\uc5d0 \ub530\ub77c \ub2e4\ub984)<\/p>\n

\uc81c\uc5b4 \ud544\ub4dc: 80(\ud655\uc7a5 \ud615\uc2dd \uac00\uc815, \ub370\uc774\ud130 \uae38\uc774 8\ubc14\uc774\ud2b8)<\/p>\n

\ub370\uc774\ud130 \ud544\ub4dc: 01 02 03 04 05 06 07 08 (8\ubc14\uc774\ud2b8 \ub370\uc774\ud130)<\/p>\n

CRC \ud544\ub4dc: CRC \uac12(\uc774 \uac12\uc740 \uc774\uc804 \ub370\uc774\ud130\ub97c \uae30\ubc18\uc73c\ub85c \uacc4\uc0b0\ub428)<\/p>\n

\uc751\ub2f5 \ud544\ub4dc: \ud2b9\uc815 \uac12 \uc5c6\uc74c, \ud558\ub4dc\uc6e8\uc5b4\uc5d0 \uc758\ud574 \ucc98\ub9ac\ub428<\/p>\n

\ud504\ub808\uc784 \uc885\ub8cc: \ud2b9\uc815 \uac12 \uc5c6\uc74c, \ud558\ub4dc\uc6e8\uc5b4\uc5d0 \uc758\ud574 \uac10\uc9c0\ub428<\/p>\n

CAN \uba54\uc2dc\uc9c0\ub294 \uc77c\ubc18\uc801\uc73c\ub85c 16\uc9c4\ubc95\uc774 \uc544\ub2cc \uc774\uc9c4\ubc95\uc73c\ub85c \uc804\uc1a1\ub418\ubbc0\ub85c \uc704\uc758 \uba54\uc2dc\uc9c0 \uc608\uc2dc\ub294 \uc2e4\uc81c CAN \ud504\ub85c\ud1a0\ucf5c \uc0ac\uc591\uc744 \uc815\ud655\ud788 \ub530\ub974\uc9c0 \uc54a\ub294\ub2e4\ub294 \uc810\uc5d0 \uc720\uc758\ud558\uc2dc\uae30 \ubc14\ub78d\ub2c8\ub2e4. \ub610\ud55c \uc2e4\uc81c CAN \uba54\uc2dc\uc9c0\uc5d0\ub294 \ube44\ud2b8 \uc2a4\ud130\ud551 \ubc0f \ube44\ud2b8 \ud0c0\uc774\ubc0d\uacfc \uac19\uc740 \uc694\uc18c\ub3c4 \uace0\ub824\ud574\uc57c \ud569\ub2c8\ub2e4. \uc774 \uc608\uc2dc\ub294 CAN \uba54\uc2dc\uc9c0\uc758 \uae30\ubcf8 \uad6c\uc131 \uc694\uc18c\ub97c \uc124\uba85\ud558\uae30 \uc704\ud55c \uac83\uc785\ub2c8\ub2e4.<\/p>\n

\ud544\uc694\ud55c \uacbd\uc6b0 \ubd84\uc11d\uae30<\/a><\/span><\/strong> CAN \ub370\uc774\ud130 \ud1b5\uc2e0 \uc0c1\ud0dc\ub97c \uac10\uc9c0\ud560 \uc218 \uc788\ub2e4\uba74 \uc5b8\uc81c\ub4e0\uc9c0 \ubb38\uc758\ud558\uc2e4 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/p>\n<\/div><\/div><\/div><\/div><\/div>","protected":false},"excerpt":{"rendered":"","protected":false},"author":1,"featured_media":4779,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_joinchat":[],"footnotes":""},"categories":[25],"tags":[89,55],"class_list":["post-4778","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-news","tag-can","tag-canbus"],"_links":{"self":[{"href":"https:\/\/gcanbus.com\/ko\/wp-json\/wp\/v2\/posts\/4778","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/gcanbus.com\/ko\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/gcanbus.com\/ko\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/gcanbus.com\/ko\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/gcanbus.com\/ko\/wp-json\/wp\/v2\/comments?post=4778"}],"version-history":[{"count":0,"href":"https:\/\/gcanbus.com\/ko\/wp-json\/wp\/v2\/posts\/4778\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/gcanbus.com\/ko\/wp-json\/wp\/v2\/media\/4779"}],"wp:attachment":[{"href":"https:\/\/gcanbus.com\/ko\/wp-json\/wp\/v2\/media?parent=4778"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/gcanbus.com\/ko\/wp-json\/wp\/v2\/categories?post=4778"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/gcanbus.com\/ko\/wp-json\/wp\/v2\/tags?post=4778"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}