{"id":24432,"date":"2023-08-21T22:31:36","date_gmt":"2023-08-21T14:31:36","guid":{"rendered":"https:\/\/www.modbus.cn\/?p=24432"},"modified":"2026-07-01T00:12:27","modified_gmt":"2026-06-30T16:12:27","slug":"chu-xue-zhe-shi-cao-plc-modbus-tong-xun-shi-li","status":"publish","type":"post","link":"https:\/\/www.modbus.cn\/en\/24432.html","title":{"rendered":"\u521d\u5b66\u8005\u5b9e\u64cd|PLC MODBUS\u901a\u8baf\u793a\u4f8b"},"content":{"rendered":"
\n

\u4e00\u3001Modbus\u901a\u4fe1\u534f\u8bae<\/p>\n

Modbus\u534f\u8bae\u53ea\u6709\u4e00\u4e2a\u4e3b\u7ad9<\/span><\/strong>\uff0c\u53ef\u4ee5\u67091~247\u4e2a\u4ece\u7ad9\u3002\u6b64\u534f\u8bae\u652f\u6301\u4f20\u7edf\u7684RS-232\u3001RS-422\u3001RS-485\u548c\u4ee5\u592a\u7f51\u8bbe\u5907\uff0c\u8bb8\u591a\u5de5\u4e1a\u8bbe\u5907\uff0c\u5305\u62ecPLC\uff0cDCS\uff0c\u667a\u80fd\u4eea\u8868\u7b49\u90fd\u5728\u4f7f\u7528Modbus\u534f\u8bae\u4f5c\u4e3a\u4ed6\u4eec\u4e4b\u95f4\u7684\u901a\u4fe1\u6807\u51c6\u3002<\/span><\/p>\n

\u5f53\u63a7\u5236\u5668\u8bbe\u4e3a\u5728Modbus\u7f51\u7edc\u4e0a\u4ee5RTU\u6a21\u5f0f\u901a\u4fe1\uff0c\u5728\u6d88\u606f\u4e2d\u7684\u6bcf\u4e2a8Bit\u5b57\u8282\u6309\u7167\u539f\u503c\u4f20\u9001\uff0c\u4e0d\u505a\u5904\u7406\uff0c\u598263H\uff0cRTU\u5c06\u76f4\u63a5\u53d1\u900101100011\uff0c\u8fd9\u79cd\u65b9\u5f0f\u7684\u4e3b\u8981\u4f18\u70b9\u662f\u6570\u636e\u5e27\u4f20\u9001\u4e4b\u95f4\u6ca1\u6709\u95f4\u9694\uff0c\u76f8\u540c\u6ce2\u7279\u7387\u4e0b\u4f20\u8f93\u6570\u636e\u7684\u5bc6\u5ea6\u8981\u6bd4ASCII\u9ad8\uff0c\u4f20\u8f93\u901f\u5ea6\u66f4\u5feb\u3002 <\/span><\/p>\n

\u4e8c\u3001<\/span><\/strong>ModbusRTU\u4e3b\u7ad9\u6307\u4ee4<\/span><\/strong><\/p>\n

1\u3001<\/span>Modbus\u5e93\u6307\u4ee4\u5982\u56fe1\u6240\u793a\uff0cMaster\u4e3a\u4e3b\u7ad90\u53e3\uff0cMaster2\u4e3a\u4e3b\u7ad91\u53e3\uff0cSlave\u4e3a\u4ece\u7ad9\uff0c\u4e14\u4ece\u7ad9\u53ea\u67090\u53e3\u3002<\/span><\/p>\n

<\/p>\n

\u56fe1<\/span><\/p>\n

2.<\/span>\u897f\u95e8\u5b50Modbus\u5e93\u4e3b\u7ad9<\/span><\/strong>MBUS_CTRL\u7684\u4e3b\u7ad9\u5b9a\u4e49\u53c2\u6570\uff0c\u5982\u56fe2\u6240\u793a\u3002<\/span><\/p>\n

<\/p>\n

\u56fe2<\/span><\/p>\n

\u56fe2\u4e2d\u7b26\u53f7\u8bf4\u660e\u5982\u4e0b\uff1a<\/span><\/p>\n

EN\uff1a\u4e00\u76f4\u4f7f\u80fd<\/span><\/p>\n

MODE\uff1a\u5141\u8bb8Modbus\u901a\u4fe1<\/span><\/p>\n

Baud\uff1a\u901a\u4fe1\u901f\u7387\uff0c\u6ce2\u7279\u7387\uff08\u4e3b\u4ece\u4e00\u81f4\uff09\uff0c\u9ed8\u8ba49600<\/span><\/p>\n

Parity\uff1a\u5947\u5076\u6821\u9a8c\uff0c0\u65e0\u6821\u9a8c\uff0c1\u5947\u6821\u9a8c\uff0c2\u5076\u6821\u9a8c\uff08\u4e3b\u4ece\u4e00\u81f4\uff09\uff0c\u9ed8\u8ba4\u5076\u6821\u9a8c<\/span><\/p>\n

Port\uff1a\u901a\u4fe1\u7aef\u53e3\uff0c0\u53e3\u81ea\u5e26\uff0c1\u53e3\u6269\u5c55(CM01\u4fe1\u53f7\u677f\uff09<\/span><\/p>\n

Timeout\uff1a\u6700\u5927\u7b49\u5f85\u65f6\u95f4\u5355\u4f4d\uff1ams<\/span><\/p>\n

Done\uff1a\u5b8c\u6210\u4f4d<\/span><\/p>\n

Error\uff1a\u9519\u8bef\u4ee3\u7801\uff08\u5f53\u51fa\u73b0\u9519\u8bef\u53ef\u4ee5\u67e5\u770b\u8f6f\u4ef6\u5e2e\u52a9\u76f8\u5bf9\u5e94\u7684\u9519\u8bef\u4ee3\u7801\uff09<\/span><\/p>\n

\u897f\u95e8\u5b50Modbus\u5e93\u4e3b\u7ad9MBUS_MSG\u7684\u4e3b\u7ad9\u4fe1\u606f\u8bfb\u5199\u53c2\u6570\uff0c\u5982\u56fe3\u6240\u793a<\/span><\/strong><\/p>\n

<\/p>\n

\u56fe3<\/span><\/p>\n

\u56fe3\u4e2d\u7b26\u53f7\u8bf4\u660e\u5982\u4e0b\uff1a<\/span><\/p>\n

En\uff1a\u4f7f\u80fd<\/span><\/p>\n

First\uff1a\u9996\u6b21\u626b\u63cf\u7528\u6cbf\u89e6\u53d1<\/span><\/p>\n

Slave\uff1a\u4ece\u7ad9\u5730\u5740\uff081-247\u4e3b\u7ad9\u9ed8\u8ba42\u53f7\u7ad9\uff0c\u4ece\u7ad9\u5730\u5740\u96642\u4ee5\u5916\uff09<\/span><\/p>\n

RW\uff1a\u8bfb\u5199\u64cd\u4f5c\uff0c0\u8bfb\uff0c1\u5199<\/span><\/p>\n

Addr\uff1a\u8bfb\u5199\u5730\u5740\u529f\u80fd\u7801 <\/span><\/p>\n

<\/p>\n

Count\uff1a\u6570\u91cf<\/span><\/p>\n

Dataptr\uff1a\u6570\u636e\u6307\u9488 \uff08\u9ed8\u8ba4\u6307\u4e3b\u7ad9\u800c\u4e14\u662f\u4ee5\u5b57\u8282\u7684\u5f62\u5f0f\u663e\u793a\uff09<\/span><\/p>\n

Done\uff1a\u5b8c\u6210\u4f4d<\/span><\/p>\n

Error\uff1a\u9519\u8bef\u5b57\u8282\uff08\u5f53\u51fa\u73b0\u9519\u8bef\u53ef\u4ee5\u67e5\u770b\u8f6f\u4ef6\u5e2e\u52a9\u76f8\u5bf9\u5e94\u7684\u9519\u8bef\u4ee3\u7801\uff09<\/span><\/p>\n

STEP7_Micro\/WIN Smart\u548cS7_200SmartCPU\u652f\u6301\u4e24\u79cdModbus RTU\u4e3b\u7ad9\uff0c\u5bf9\u4e8e\u5355\u4e2aModbus RTU\u4e3b\u7ad9\uff0c\u4f7f\u7528\u6307\u4ee4MBUS_CTRL\u548cMBUS_MSG\uff0c\u5728\u8fdb\u884c0\u53e3\u901a\u4fe1\u65f6\u5e94\u7528\u3002\u5bf9\u4e8e\u7b2c\u4e8c\u4e2aModbus RTU\u4e3b\u7ad9\uff0c\u4f7f\u7528\u6307\u4ee4MBUS_CTRL2\u548c MBUS_MSG2\uff0c\u5728\u8fdb\u884c1\u53e3\u901a\u4fe1\u65f6\u5e94\u7528\u3002\u5982\u679c\u60a8\u5728\u9879\u76ee\u4e2d\u4f7f\u7528\u4e24\u4e2a Modbus \u4e3b\u7ad9\uff0c\u5219\u8981\u786e\u4fdd MBUS_CTRL \u548c MB_CTRL2 \u4f7f\u7528\u4e0d\u540c\u7684\u7aef\u53e3\u53f7\u3002<\/span><\/p>\n

MBUS_CTRL\u5199\u5728\u4e3b\u7ad9\u91cc\uff0c\u4e0d\u7ba1\u6709\u591a\u5c11\u4ece\u7ad9\uff0c\u53ea\u5199\u4e00\u6b21\u3002MBUS_MSG \u5199\u5728\u4e3b\u7ad9\u91cc\uff0c\u6bd4\u5982\u6709\u4e00\u4e2a\u4ece\u7ad9\uff0c\u4e3b\u4ece\u4e92\u76f8\u63a7\u5236\uff0c\u9700\u89812\u6761\u6307\u4ee4\uff0c\u4e00\u4e2a\u8bfb\u4e00\u4e2a\u5199\uff0c\u6709\u591a\u4e2a\u4ece\u7ad9\uff0c\u5c31\u5199\u591a\u4e2a\u8bfb\u5199\u6307\u4ee4\u3002<\/span><\/strong><\/p>\n

\u4e09\u3001<\/span><\/strong>ModbusRTU\u4ece\u7ad9\u6307\u4ee4<\/span><\/strong><\/p>\n

    \n
  1. \u897f\u95e8\u5b50Modbus\u5e93\u4ece\u7ad9MBUS_CTRL\u7684\u4ece\u7ad9\u5b9a\u4e49\u53c2\u6570\uff0c\u5982\u56fe4\u6240\u793a\u3002<\/span><\/li>\n<\/ol>\n

    <\/p>\n

    \u56fe4<\/span><\/p>\n

    \u56fe4\u4e2d\u7b26\u53f7\u8bf4\u660e\u5982\u4e0b\uff1a<\/span><\/p>\n

    En \u4f7f\u80fd\u7528\u6cbf\u89e6\u53d1<\/span><\/p>\n

    Mode \u5141\u8bb8Modbus\u901a\u4fe1<\/span><\/p>\n

    Addr \u4ece\u7ad9\u5730\u5740\uff081-147)<\/span><\/p>\n

    Baud \u901a\u4fe1\u901f\u7387\u6ce2\u7279\u7387\uff08\u4e3b\u4ece\u4e00\u81f4\uff09\u9ed8\u8ba49600<\/span><\/p>\n

    Parity <\/span>\u5947\u5076\u6821\u9a8c0\u65e0\u6821\u9a8c\uff0c1\u5947\u6821\u9a8c\uff0c2\u5076\u6821\u9a8c\uff08\u4e3b\u4ece\u4e00\u81f4\uff09\u9ed8\u8ba4\u5076\u6821\u9a8c<\/span><\/p>\n

    Port \u901a\u4fe1\u7aef\u53e30\u53e3\u81ea\u5e26<\/span><\/p>\n

    Delay \u5ef6\u65f6<\/span><\/p>\n

    MaxIQ \u6700\u5927\u8f93\u5165\u8f93\u51fa\u70b9\u6570256<\/span><\/p>\n

    MaxAI \u6700\u5927\u6a21\u62df\u91cf\u8f93\u516556<\/span><\/p>\n

    Maxhold \u6700\u5927\u7f13\u5b58\u533a<\/span><\/p>\n

    Holdstart \u6700\u5927\u7f13\u5b58\u533a\u8d77\u59cb\u5730\u5740<\/span><\/p>\n

    Done \u5b8c\u6210\u4f4d<\/span><\/p>\n

    Error \u9519\u8bef\u5b57\u8282<\/span><\/p>\n

    Done \u5b8c\u6210\u4f4d<\/span><\/p>\n

    Error \u9519\u8bef\u5b57\u8282<\/span><\/p>\n

    2.<\/span>\u897f\u95e8\u5b50Modbus\u5e93\u4ece\u7ad9MBUS_SLAVE\u7684\u4ece\u7ad9\u5e94\u7b54\u53c2\u6570\uff0c\u5982\u56fe5\u6240\u793a\u3002<\/span><\/p>\n

    <\/p>\n

    \u56fe5<\/span><\/p>\n

    \u56db\u3001<\/span><\/strong>\u901a\u4fe1\u7a0b\u5e8f\u7f16\u5199<\/span><\/strong><\/p>\n

    ModbusRTU\u4e24\u53f0PLC\u4e92\u76f8\u63a7\u5236\u901a\u4fe1\u793a\u4f8b<\/span><\/strong><\/p>\n

    ModbusRTU \u4e24\u53f0PLC\u5206\u522b\u7528I\u70b9\u76f8\u4e92\u63a7\u5236Q\u70b9\uff0c\u4e3b\u7ad9\u7a0b\u5e8f\u5982\u56fe6\u6240\u793a\uff0c\u4ece\u7ad9\u7a0b\u5e8f\u5982\u56fe7\u6240\u793a\u3002\u5199\u4ece\u7ad9\u7a0b\u5e8f\u9700\u8981\u6ce8\u610f\uff0c\u4ece\u7ad9\u5b9a\u4e49\u9700\u8981\u7528\u6cbf\u89e6\u53d1\uff0c\u5728\u7cfb\u7edf\u5757\u8bb0\u5f97\u66f4\u6539\u4ece\u7ad9PLC\u7ad9\u5730\u5740\u3002<\/span><\/p>\n

    <\/p>\n

    <\/p>\n

    <\/p>\n

    \u56fe6<\/span><\/p>\n

    <\/p>\n

    <\/p>\n

    \u56fe7<\/span><\/p>\n

    ModbusRTU\u4e24\u53f0PLC\u661f\u4e09\u89d2\u901a\u4fe1\u793a\u4f8b<\/span><\/strong><\/p>\n

    \u4e24\u53f0PLC\uff0c\u4e3b\u7ad9\u63a7\u5236\u4ece\u7ad9\u7684\u661f\u4e09\u89d2\u542f\u52a8\u505c\u6b62<\/span>\uff0c\u4e3b\u7ad9IW0\u63a7\u5236\u4ece\u7ad9VW0\uff08I0.0-V0.0\u542f\u52a8\uff0cI0.1-V0.1\u505c\u6b62\uff09\uff0c\u4e3b\u7ad9\u7a0b\u5e8f\u5982\u56fe1-1\u56fe1-2\u6240\u793a\uff0c\u4ece\u7ad9\u7a0b\u5e8f\u5982\u56fe1-3\u56fe1-4\u56fe1-5\u56fe1-6\u56fe1-7\u56fe1-8\u6240\u793a\u3002<\/span><\/p>\n

    <\/p>\n

    \u56fe1-1<\/span><\/p>\n

    <\/p>\n

    \u56fe1-2<\/span><\/p>\n

    <\/p>\n

    \u56fe1-3<\/span><\/p>\n

    <\/p>\n

    \u56fe1-4<\/span><\/p>\n

    <\/p>\n

    \u56fe1-5<\/span><\/p>\n

    <\/p>\n

    \u56fe1-6<\/span><\/p>\n

    <\/p>\n

    \u56fe1-7<\/span><\/p>\n

    <\/p>\n

    \u56fe1-8<\/span><\/p>\n

    ModbusRTU\u4e09\u53f0PLC\u661f\u4e09\u89d2\u901a\u4fe1\u793a\u4f8b<\/span><\/strong><\/p>\n

      \n
    1. \u4e09\u53f0<\/span>PLC\u901a\u4fe1\u4e3b\u7ad9\u30013\u53f7\u4ece\u7ad9\u548c4\u4ece\u7ad9\uff0c3\u53f7\u548c4\u53f7\u4e4b\u95f4\u4e92\u76f8\u63a7\u5236\u4e24\u53f0\u7535\u673a\u7684\u542f\u505c\u5982\u56fe2-1\u6240\u793a\uff0c\u63a7\u5236\u7a0b\u5e8f\u5982\u56fe2-2\u56fe2-3\u56fe2-4\u56fe2-5\u56fe2-6\u56fe2-7\u6240\u793a\u3002<\/span><\/li>\n<\/ol>\n

      <\/p>\n

      \u56fe2-1<\/span><\/p>\n

      <\/p>\n

      \u56fe2-2<\/span><\/p>\n

      <\/p>\n

      \u56fe2-3<\/span><\/p>\n

      <\/p>\n

      \u56fe2-4<\/span><\/p>\n

      <\/p>\n

      \u56fe2-5<\/span><\/p>\n

      <\/p>\n

      \u56fe2-6<\/span><\/p>\n

      <\/p>\n

      \u56fe2-7<\/span><\/p>\n

      2.<\/span>\u4e09\u53f0PLC\u901a\u4fe1\u4e3b\u7ad9\u30013\u53f7\u4ece\u7ad9\u548c4\u4ece\u7ad9\uff0c3\u53f7\u548c4\u53f7\u4e4b\u95f4\u4e92\u76f8\u63a7\u5236\u4e24\u53f0\u7535\u673a\u7684\u542f\u505c\uff0c3\u53f7\u4ece\u7ad9\u63a7\u5236\u7a0b\u5e8f\u5982\u56fe2-8\u56fe2-9\u56fe2-10\u6240\u793a\u3002<\/span><\/p>\n

      <\/p>\n

      \u56fe2-8<\/span><\/p>\n

      <\/p>\n

      \u56fe2-9<\/span><\/p>\n

      <\/p>\n

      \u56fe2-10<\/span><\/p>\n

      3.<\/span>\u4e09\u53f0<\/span>PLC\u901a\u4fe1\u4e3b\u7ad9\u30013\u53f7\u4ece\u7ad9\u548c4\u4ece\u7ad9\uff0c3\u53f7\u548c4\u53f7\u4e4b\u95f4\u4e92\u76f8\u63a7\u5236\u4e24\u53f0\u7535\u673a\u7684\u542f\u505c\uff0c4\u53f7\u4ece\u7ad9\u63a7\u5236\u7a0b\u5e8f\u5982\u56fe2-11\u56fe2-12\u56fe2-13\u6240\u793a\u3002<\/span><\/p>\n

      <\/p>\n

      \u56fe2-11<\/span><\/p>\n

      <\/p>\n

      \u56fe2-12<\/span><\/p>\n

      <\/p>\n

      \u56fe2-13<\/span><\/p>\n

      \u503c\u5f97\u6ce8\u610f\u7684\u662f\uff0c\u8981\u8bb0\u5f97\u66f4\u6539\u4e09\u53f7\u7ad9\u548c\u56db\u53f7\u7ad9\u5728\u7cfb\u7edf\u5757\u5185\u7684\u5730\u5740\uff0c\u4ece\u7ad9\u5b9a\u4e49\u7528\u6cbf\u6765\u89e6\u53d1\u3002\u6700\u540e\u8bb0\u5f97\u5728\u7a0b\u5e8f\u5757\u4e2d\u8bbe\u7f6e\u5e93\u5b58\u50a8\u533a\u7684\u5206\u914d\u5982\u56fe2-14\u3002<\/span><\/strong><\/p>\n

      <\/p>\n

      \u56fe2-14<\/span><\/p>\n<\/div>\n<\/span>","protected":false},"excerpt":{"rendered":"

      \u4e00\u3001Modbus\u901a\u4fe1\u534f\u8bae Modbus\u534f\u8bae\u53ea\u6709\u4e00\u4e2a\u4e3b\u7ad9\uff0c\u53ef\u4ee5…<\/p>","protected":false},"author":1,"featured_media":24433,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":"","_members_access_role":[],"_members_access_error":""},"categories":[1394,1135],"tags":[690,1131,281],"class_list":["post-24432","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-modbus-protocol","category-industrial-iot","tag-modbus-protocol","tag-plc","tag-281"],"_links":{"self":[{"href":"https:\/\/www.modbus.cn\/en\/wp-json\/wp\/v2\/posts\/24432","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.modbus.cn\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.modbus.cn\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.modbus.cn\/en\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.modbus.cn\/en\/wp-json\/wp\/v2\/comments?post=24432"}],"version-history":[{"count":0,"href":"https:\/\/www.modbus.cn\/en\/wp-json\/wp\/v2\/posts\/24432\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.modbus.cn\/en\/wp-json\/wp\/v2\/media\/24433"}],"wp:attachment":[{"href":"https:\/\/www.modbus.cn\/en\/wp-json\/wp\/v2\/media?parent=24432"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.modbus.cn\/en\/wp-json\/wp\/v2\/categories?post=24432"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.modbus.cn\/en\/wp-json\/wp\/v2\/tags?post=24432"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}