{"id":1419,"date":"2023-04-29T11:47:05","date_gmt":"2023-04-29T03:47:05","guid":{"rendered":"https:\/\/usei.cn\/?p=1419"},"modified":"2023-04-29T23:18:16","modified_gmt":"2023-04-29T15:18:16","slug":"modbus-%e5%8d%8f%e8%ae%ae","status":"publish","type":"post","link":"https:\/\/usei.cn\/index.php\/2023\/04\/29\/modbus-%e5%8d%8f%e8%ae%ae\/","title":{"rendered":"ModBus \u534f\u8bae"},"content":{"rendered":"\n

ModBus\u662fModicon\u516c\u53f8\u4e3a\u5176PLC\u901a\u8baf\u800c\u5f00\u53d1\u7684\u4e00\u79cd\u901a\u8baf\u534f\u8bae\u3002\u5982\u4ecaModicon\u516c\u53f8\u5df2\u7ecf\u88ab\u65bd\u8010\u5fb7\u6536\u8d2d\u6210\u4e3a\u4e86\u65bd\u8010\u5fb7\u65d7\u4e0b\u54c1\u724c\u3002\u4ece1979\u5e74\u95ee\u4e16\u81f3\u4eca\uff0c\u5df2\u7ecf\u6210\u4e3a\u5de5\u4e1a\u901a\u8baf\u9886\u57df\u7684\u4e1a\u754c\u6807\u51c6\u3002<\/p>\n\n\n\n

\u534f\u8bae\u5206\u7c7b<\/h1>\n\n\n\n

ModBus\u5177\u6709\u4e24\u79cd\u4e32\u884c\u4f20\u8f93\u6a21\u5f0f\uff0cASCII \u548c RTU\u3002\u5b83\u4eec\u5b9a\u4e49\u4e86\u6570\u636e\u5982\u4f55\u6253\u5305\u3001\u89e3\u7801\u7684\u4e0d\u540c\u65b9\u5f0f\u3002\u652f\u6301 Modbus \u534f\u8bae\u7684\u8bbe\u5907\u4e00\u822c\u90fd\u652f\u6301 RTU \u683c\u5f0f\u3002\u901a\u4fe1\u53cc\u65b9\u5fc5\u987b\u540c\u65f6\u652f\u6301\u4e0a\u8ff0\u6a21\u5f0f\u4e2d\u7684\u4e00\u79cd<\/p>\n\n\n\n

\"\"<\/div><\/a><\/figure>\n\n\n\n

Modbus RTU\uff1a<\/span><\/h2>\n\n\n\n

\u8fd9\u662f\u4e00\u79cd\u57fa\u4e8e\u4e32\u884c\u901a\u4fe1\u7684Modbus\u534f\u8bae\uff0c\u6570\u636e\u4ee5\u4e8c\u8fdb\u5236\u5f62\u5f0f\u4f20\u8f93\uff0c\u4f7f\u7528RS-232\u6216RS-485\u7b49\u4e32\u884c\u901a\u4fe1\u65b9\u5f0f\u3002Modbus RTU\u534f\u8bae\u5177\u6709\u6570\u636e\u4f20\u8f93\u901f\u5ea6\u5feb\u3001\u4f20\u8f93\u8ddd\u79bb\u8f83\u8fdc\u7b49\u4f18\u70b9\uff0c\u56e0\u6b64\u5728\u5de5\u4e1a\u73b0\u573a\u4e2d\u5e94\u7528\u5e7f\u6cdb\u3002<\/p>\n\n\n\n

Modbus ASCII:<\/h2>\n\n\n\n

\u8fd9\u662f\u4e00\u79cd\u57fa\u4e8e\u4e32\u884c\u901a\u4fe1\u7684Modbus\u534f\u8bae\uff0c\u6570\u636e\u4ee5ASCII\u7801\u5f62\u5f0f\u4f20\u8f93\uff0c\u540c\u6837\u4f7f\u7528RS-232\u6216RS-485\u7b49\u4e32\u884c\u901a\u4fe1\u65b9\u5f0f\u3002Modbus ASCII\u534f\u8bae\u5177\u6709\u6570\u636e\u4f20\u8f93\u7684\u53ef\u8bfb\u6027\u8f83\u597d\u3001\u8bef\u7801\u7387\u4f4e\u7b49\u4f18\u70b9\uff0c\u4f46\u662f\u4f20\u8f93\u901f\u5ea6\u8f83\u6162\u3002<\/p>\n\n\n\n

Modbus TCP\uff1a<\/span><\/h2>\n\n\n\n

\u8fd9\u662f\u4e00\u79cd\u57fa\u4e8e\u4ee5\u592a\u7f51\u901a\u4fe1\u7684Modbus\u534f\u8bae\uff0c\u4f7f\u7528TCP\/IP\u534f\u8bae\u6808\u8fdb\u884c\u6570\u636e\u4f20\u8f93\u3002Modbus TCP\u534f\u8bae\u5177\u6709\u6570\u636e\u4f20\u8f93\u901f\u5ea6\u5feb\u3001\u4f20\u8f93\u8ddd\u79bb\u8f83\u8fdc\u3001\u53ef\u5b9e\u73b0\u591a\u70b9\u901a\u4fe1\u7b49\u4f18\u70b9\uff0c\u56e0\u6b64\u5728\u5de5\u4e1a\u63a7\u5236\u7cfb\u7edf\u4e2d\u5e94\u7528\u8d8a\u6765\u8d8a\u5e7f\u6cdb<\/p>\n\n\n\n

<\/p>\n\n\n\n

\u9700\u8981\u6ce8\u610f\u7684\u662f\uff0c\u4e0d\u540c\u7684Modbus\u534f\u8bae\u4e4b\u95f4\u4e0d\u80fd\u76f4\u63a5\u901a\u4fe1\uff0c\u9700\u8981\u4f7f\u7528\u76f8\u5e94\u7684\u534f\u8bae\u8f6c\u6362\u5668\u6216\u7f51\u5173\u8fdb\u884c\u8f6c\u6362\u3002\u540c\u65f6\uff0c\u5728\u4f7f\u7528Modbus\u534f\u8bae\u8fdb\u884c\u901a\u4fe1\u65f6\uff0c\u9700\u8981\u8003\u8651\u6570\u636e\u4f20\u8f93\u7684\u53ef\u9760\u6027\u548c\u5b89\u5168\u6027\u7b49\u56e0\u7d20\uff0c\u91c7\u7528\u5408\u9002\u7684\u901a\u4fe1\u65b9\u5f0f\u548c\u5b89\u5168\u63aa\u65bd\u6765\u4fdd\u62a4Modbus\u6570\u636e\u7684\u4f20\u8f93\u548c\u4f7f\u7528\u3002<\/p>\n\n\n\n

\u5bc4\u5b58\u5668<\/h1>\n\n\n\n

\u4e00\u51718\u79cd\u529f\u80fd\u7801\u3002\u8fd9\u5176\u4e2d\u6709\u6d89\u53ca\u5230\u7ebf\u5708\u3001\u79bb\u6563\u8f93\u5165\u3001\u4fdd\u6301\u3001\u8f93\u5165\u56db\u79cd\u5bc4\u5b58\u5668\u3002<\/p>\n\n\n\n

0x01: \u8bfb\u7ebf\u5708\u5bc4\u5b58\u5668\n0x02: \u8bfb\u79bb\u6563\u8f93\u5165\u5bc4\u5b58\u5668\n0x03: \u8bfb\u4fdd\u6301\u5bc4\u5b58\u5668\n0x04: \u8bfb\u8f93\u5165\u5bc4\u5b58\u5668\n\n0x05: \u5199\u5355\u4e2a\u7ebf\u5708\u5bc4\u5b58\u5668\n0x06: \u5199\u5355\u4e2a\u4fdd\u6301\u5bc4\u5b58\u5668\n0x0f:  \u5199\u591a\u4e2a\u7ebf\u5708\u5bc4\u5b58\u5668\n0x10: \u5199\u591a\u4e2a\u4fdd\u6301\u5bc4\u5b58\u5668<\/code><\/pre>\n\n\n\n
\u7ebf\u5708\u5bc4\u5b58\u5668\uff1a<\/h2>\n\n\n\n
\u5b9e\u9645\u4e0a\u5c31\u53ef\u4ee5\u7c7b\u6bd4\u4e3a\u5f00\u5173\u91cf\uff08\u7ee7\u7535\u5668\u72b6\u6001\uff09\uff0c\u6bcf\u4e00\u4e2abit\u5bf9\u5e94\u4e00\u4e2a\u4fe1\u53f7\u7684\u5f00\u5173\u72b6\u6001\u3002\u6240\u4ee5\u4e00\u4e2abyte\u5c31\u53ef\u4ee5\u540c\u65f6\u63a7\u52368\u8def\u7684\u4fe1\u53f7\u3002\u6bd4\u5982\u63a7\u5236\u5916\u90e88\u8defio\u7684\u9ad8\u4f4e\u3002 \u7ebf\u5708\u5bc4\u5b58\u5668\u652f\u6301\u8bfb\u4e5f\u652f\u6301\u5199\uff0c\u5199\u5728\u529f\u80fd\u7801\u91cc\u9762\u53c8\u5206\u4e3a\u5199\u5355\u4e2a\u7ebf\u5708\u5bc4\u5b58\u5668\u548c\u5199\u591a\u4e2a\u7ebf\u5708\u5bc4\u5b58\u5668\u3002\u5bf9\u5e94\u4e0a\u9762\u7684\u529f\u80fd\u7801\u4e5f\u5c31\u662f\uff1a0x01 0x05 0x0f<\/p>\n\n\n\n
\u79bb\u6563\u8f93\u5165\u5bc4\u5b58\u5668\uff1a<\/h2>\n\n\n\n
\u5982\u679c\u7ebf\u5708\u5bc4\u5b58\u5668\u7406\u89e3\u4e86\u8fd9\u4e2a\u81ea\u7136\u4e5f\u660e\u767d\u4e86\u3002\u79bb\u6563\u8f93\u5165\u5bc4\u5b58\u5668\u5c31\u76f8\u5f53\u4e8e\u7ebf\u5708\u5bc4\u5b58\u5668\u7684\u53ea\u8bfb\u6a21\u5f0f\uff0c\u4ed6\u4e5f\u662f\u6bcf\u4e2abit\u8868\u793a\u4e00\u4e2a\u5f00\u5173\u91cf\uff0c\u800c\u4ed6\u7684\u5f00\u5173\u91cf\u53ea\u80fd\u8bfb\u53d6\u8f93\u5165\u7684\u5f00\u5173\u4fe1\u53f7\uff0c\u662f\u4e0d\u80fd\u591f\u5199\u7684\u3002\u6bd4\u5982\u6211\u8bfb\u53d6\u5916\u90e8\u6309\u952e\u7684\u6309\u4e0b\u8fd8\u662f\u677e\u5f00\u3002\u6240\u4ee5\u529f\u80fd\u7801\u4e5f\u7b80\u5355\u5c31\u4e00\u4e2a\u8bfb\u7684 0x02<\/p>\n\n\n\n
\u4fdd\u6301\u5bc4\u5b58\u5668\uff1a<\/h2>\n\n\n\n
\u8fd9\u4e2a\u5bc4\u5b58\u5668\u7684\u5355\u4f4d\u4e0d\u518d\u662fbit\u800c\u662f\u4e24\u4e2abyte\uff0c\u4e5f\u5c31\u662f\u53ef\u4ee5\u5b58\u653e\u5177\u4f53\u7684\u6570\u636e\u91cf\u7684\uff0c\u5e76\u4e14\u662f\u53ef\u8bfb\u5199\u7684\u3002\u4e00\u822c\u5bf9\u5e94\u53c2\u6570\u8bbe\u7f6e\uff0c\u6bd4\u5982\u6211\u6211\u8bbe\u7f6e\u65f6\u95f4\u5e74\u6708\u65e5\uff0c\u4e0d\u4f46\u53ef\u4ee5\u5199\u4e5f\u53ef\u4ee5\u8bfb\u51fa\u6765\u73b0\u5728\u7684\u65f6\u95f4\u3002\u5199\u4e5f\u5206\u4e3a\u5355\u4e2a\u5199\u548c\u591a\u4e2a\u5199\uff0c\u6240\u4ee5\u529f\u80fd\u7801\u6709\u5bf9\u5e94\u7684\u4e09\u4e2a\uff1a0x03 0x06 0x10<\/p>\n\n\n\n
\u8f93\u5165\u5bc4\u5b58\u5668\uff1a<\/h2>\n\n\n\n
\u8fd9\u4e2a\u548c\u4fdd\u6301\u5bc4\u5b58\u5668\u7c7b\u4f3c\uff0c\u4f46\u662f\u4e5f\u662f\u53ea\u652f\u6301\u8bfb\u800c\u4e0d\u80fd\u5199\uff0c\u4e00\u822c\u662f\u8bfb\u53d6\u5404\u79cd\u5b9e\u65f6\u6570\u636e\u3002\u4e00\u4e2a\u5bc4\u5b58\u5668\u4e5f\u662f\u5360\u636e\u4e24\u4e2abyte\u7684\u7a7a\u95f4\u3002\u7c7b\u6bd4\u6211\u6211\u901a\u8fc7\u8bfb\u53d6\u8f93\u5165\u5bc4\u5b58\u5668\u83b7\u53d6\u73b0\u5728\u7684AD\u91c7\u96c6\u503c\u3002\u5bf9\u5e94\u7684\u529f\u80fd\u7801\u4e5f\u5c31\u4e00\u4e2a 0x04<\/p>\n","protected":false},"excerpt":{"rendered":"
ModBus\u662fModicon\u516c\u53f8\u4e3a\u5176PLC\u901a\u8baf\u800c\u5f00\u53d1\u7684\u4e00\u79cd\u901a\u8baf\u534f\u8bae\u3002\u5982\u4ecaModicon\u516c\u53f8\u5df2\u7ecf\u88ab\u65bd\u8010\u5fb7\u6536\u8d2d\u6210\u4e3a […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[5,54],"tags":[],"class_list":["post-1419","post","type-post","status-publish","format-standard","hentry","category-lot","category-protocol"],"_links":{"self":[{"href":"https:\/\/usei.cn\/index.php\/wp-json\/wp\/v2\/posts\/1419","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/usei.cn\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/usei.cn\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/usei.cn\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/usei.cn\/index.php\/wp-json\/wp\/v2\/comments?post=1419"}],"version-history":[{"count":12,"href":"https:\/\/usei.cn\/index.php\/wp-json\/wp\/v2\/posts\/1419\/revisions"}],"predecessor-version":[{"id":1438,"href":"https:\/\/usei.cn\/index.php\/wp-json\/wp\/v2\/posts\/1419\/revisions\/1438"}],"wp:attachment":[{"href":"https:\/\/usei.cn\/index.php\/wp-json\/wp\/v2\/media?parent=1419"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/usei.cn\/index.php\/wp-json\/wp\/v2\/categories?post=1419"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/usei.cn\/index.php\/wp-json\/wp\/v2\/tags?post=1419"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}