{"id":44512,"date":"2026-06-28T14:16:53","date_gmt":"2026-06-28T06:16:53","guid":{"rendered":"https:\/\/www.modbus.cn\/44512.html"},"modified":"2026-06-28T21:19:42","modified_gmt":"2026-06-28T13:19:42","slug":"modbus-plc-programming-guide","status":"publish","type":"post","link":"https:\/\/www.modbus.cn\/en\/44512.html","title":{"rendered":"Modbus \u5728\u4e3b\u6d41 PLC \u4e2d\u7684\u7f16\u7a0b\u5b9e\u6218\u6307\u5357\uff1a\u897f\u95e8\u5b50\u3001\u4e09\u83f1\u3001\u53f0\u8fbe\u3001\u6c47\u5ddd\u5168\u7cfb\u5217"},"content":{"rendered":"<h1 class=\"wp-block-heading\">Modbus \u5728\u4e3b\u6d41 PLC \u4e2d\u7684\u7f16\u7a0b\u5b9e\u6218\u6307\u5357\uff08\u897f\u95e8\u5b50\u3001\u4e09\u83f1\u3001\u53f0\u8fbe\u3001\u6c47\u5ddd\u5168\u7cfb\u5217\uff09<\/h1>\n\n\n\n<p class=\"wp-block-paragraph\">\u5728\u5de5\u4e1a\u81ea\u52a8\u5316\u9886\u57df\uff0c<strong>Modbus PLC \u7f16\u7a0b<\/strong>\u662f\u6bcf\u4e00\u4f4d\u81ea\u52a8\u5316\u5de5\u7a0b\u5e08\u5fc5\u987b\u638c\u63e1\u7684\u6838\u5fc3\u6280\u80fd\u3002\u65e0\u8bba\u662f\u897f\u95e8\u5b50 S7-1200\/1500 \u7684\u4e13\u7528\u901a\u4fe1\u6307\u4ee4\uff0c\u8fd8\u662f\u4e09\u83f1 FX5U \u7684 ADPRW \u6307\u4ee4\uff0c\u4ea6\u6216\u662f\u53f0\u8fbe DVP \u7cfb\u5217\u7684 MODRW \u6307\u4ee4\u548c\u6c47\u5ddd H3U \u7684\u81ea\u7531\u53e3\u7f16\u7a0b\uff0c\u4e0d\u540c\u54c1\u724c\u7684 PLC \u5728 Modbus \u901a\u4fe1\u7684\u5b9e\u73b0\u65b9\u5f0f\u4e0a\u5b58\u5728\u663e\u8457\u5dee\u5f02\u3002\u672c\u6587\u4f5c\u4e3a <a href=\"https:\/\/www.modbus.cn\/en\/\" rel=\"noopener noreferrer nofollow\">modbus.cn<\/a> \u7cfb\u5217\u6559\u7a0b\u7684\u91cd\u8981\u7ec4\u6210\u90e8\u5206\uff0c\u5c06\u7cfb\u7edf\u6027\u5730\u5bf9\u6bd4\u56db\u5927\u4e3b\u6d41 PLC \u54c1\u724c\u7684 Modbus \u7f16\u7a0b\u65b9\u6cd5\uff0c\u63d0\u4f9b\u5b8c\u6574\u7684\u68af\u5f62\u56fe\u793a\u4f8b\u548c\u5730\u5740\u6620\u5c04\u5173\u7cfb\uff0c\u5e2e\u52a9\u5de5\u7a0b\u5e08\u5feb\u901f\u638c\u63e1\u8de8\u54c1\u724c PLC \u7684 Modbus \u901a\u4fe1\u5f00\u53d1\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u5404\u54c1\u724c PLC Modbus \u5b9e\u73b0\u65b9\u5f0f\u5bf9\u6bd4\u603b\u89c8<\/h2>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-large is-resized\"><img decoding=\"async\" src=\"https:\/\/www.modbus.cn\/wp-content\/uploads\/diagrams\/a09-plc-wiring.svg\" style=\"width:822px;height:auto\"><figcaption class=\"wp-element-caption\">\u25b2 \u56fe1\uff1a\u4e3b\u6d41 PLC Modbus \u901a\u4fe1\u63a5\u7ebf\u62d3\u6251\u53ca\u5404\u54c1\u724c\u901a\u4fe1\u53e3\u914d\u7f6e\u5bf9\u7167\u3002<\/figcaption><\/figure>\n<\/div>\n\n\n<p class=\"wp-block-paragraph\">\u5728\u6df1\u5165\u5177\u4f53\u7f16\u7a0b\u4e4b\u524d\uff0c\u6211\u4eec\u5148\u7406\u89e3\u4e00\u4e2a\u5173\u952e\u533a\u522b\uff1a\u4e0d\u540c\u54c1\u724c\u7684 PLC \u5bf9 Modbus \u534f\u8bae\u7684\u652f\u6301\u65b9\u5f0f\u5206\u4e3a&#8221;\u4e13\u7528\u6307\u4ee4&#8221;\u548c&#8221;\u81ea\u7531\u53e3\u7f16\u7a0b&#8221;\u4e24\u5927\u7c7b\u3002\u4e13\u7528\u6307\u4ee4\u65b9\u5f0f\u7531 PLC \u5382\u5546\u5c01\u88c5\u597d Modbus \u534f\u8bae\u6808\uff0c\u5de5\u7a0b\u5e08\u53ea\u9700\u8c03\u7528\u6307\u4ee4\u5e76\u914d\u7f6e\u53c2\u6570\u5373\u53ef\u5b8c\u6210\u901a\u4fe1\uff1b\u800c\u81ea\u7531\u53e3\u7f16\u7a0b\u65b9\u5f0f\u5219\u9700\u8981\u5de5\u7a0b\u5e08\u624b\u52a8\u6784\u5efa Modbus \u62a5\u6587\u5e27\uff0c\u901a\u8fc7\u4e32\u53e3\u9010\u5b57\u8282\u6536\u53d1\u6765\u5b9e\u73b0\u534f\u8bae\u3002\u4e24\u79cd\u65b9\u5f0f\u5404\u6709\u4f18\u52a3\uff0c\u4e0b\u8868\u7ed9\u51fa\u4e86\u76f4\u89c2\u5bf9\u6bd4\u3002<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table><thead><tr><th>\u54c1\u724c\/\u7cfb\u5217<\/th><th>\u5b9e\u73b0\u65b9\u5f0f<\/th><th>\u6838\u5fc3\u6307\u4ee4\/\u673a\u5236<\/th><th>\u5f00\u53d1\u96be\u5ea6<\/th><th>\u7075\u6d3b\u6027<\/th><\/tr><\/thead><tbody><tr><td>\u897f\u95e8\u5b50 S7-1200\/1500<\/td><td>\u4e13\u7528\u6307\u4ee4<\/td><td>MB_COMM_LOAD \/ MB_MASTER \/ MB_SLAVE<\/td><td>\u4f4e<\/td><td>\u4e2d<\/td><\/tr><tr><td>\u4e09\u83f1 FX5U<\/td><td>\u4e13\u7528\u6307\u4ee4<\/td><td>ADPRW<\/td><td>\u4f4e<\/td><td>\u4e2d<\/td><\/tr><tr><td>\u4e09\u83f1 FX3U<\/td><td>\u4e13\u7528\u6307\u4ee4<\/td><td>ADPRW\uff08\u9700\u9002\u914d\u5668\uff09<\/td><td>\u4e2d<\/td><td>\u4e2d<\/td><\/tr><tr><td>\u53f0\u8fbe DVP \u7cfb\u5217<\/td><td>\u4e13\u7528\u6307\u4ee4<\/td><td>MODRW<\/td><td>\u4f4e<\/td><td>\u4e2d<\/td><\/tr><tr><td>\u53f0\u8fbe AS \u7cfb\u5217<\/td><td>\u4e13\u7528\u6307\u4ee4<\/td><td>MODRW \/ M_MODRW<\/td><td>\u4f4e<\/td><td>\u9ad8<\/td><\/tr><tr><td>\u6c47\u5ddd H3U<\/td><td>\u81ea\u7531\u53e3\u7f16\u7a0b<\/td><td>RS \u6307\u4ee4 + CRC \u6821\u9a8c<\/td><td>\u9ad8<\/td><td>\u9ad8<\/td><\/tr><tr><td>\u6c47\u5ddd AM600<\/td><td>\u4e13\u7528\u6307\u4ee4<\/td><td>Modbus \u529f\u80fd\u5757<\/td><td>\u4f4e<\/td><td>\u4e2d<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">\u4ece\u4e0a\u8868\u53ef\u4ee5\u770b\u51fa\uff0c<strong>\u897f\u95e8\u5b50 Modbus RTU<\/strong> \u548c <strong>\u4e09\u83f1 Modbus \u901a\u4fe1<\/strong> \u5747\u91c7\u7528\u4e13\u7528\u6307\u4ee4\u65b9\u6848\uff0c\u5f00\u53d1\u95e8\u69db\u8f83\u4f4e\uff1b\u800c <strong>\u6c47\u5ddd Modbus \u7f16\u7a0b<\/strong> \u4e2d\u7684 H3U \u7cfb\u5217\u5219\u9700\u8981\u81ea\u7531\u53e3\u7f16\u7a0b\uff0c\u5bf9\u5de5\u7a0b\u5e08\u7684\u534f\u8bae\u7406\u89e3\u80fd\u529b\u8981\u6c42\u66f4\u9ad8\u3002<strong>\u53f0\u8fbe PLC Modbus<\/strong> \u7684 MODRW \u6307\u4ee4\u5219\u4ee5\u5176\u7b80\u6d01\u6613\u7528\u8457\u79f0\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u897f\u95e8\u5b50 S7-1200\/1500 Modbus \u7f16\u7a0b\u8be6\u89e3<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u897f\u95e8\u5b50\u535a\u9014\uff08TIA Portal\uff09\u5e73\u53f0\u4e3a S7-1200 \u548c S7-1500 \u7cfb\u5217 PLC \u63d0\u4f9b\u4e86\u5b8c\u6574\u7684 Modbus \u901a\u4fe1\u5e93\uff0c\u5305\u542b\u4e09\u4e2a\u6838\u5fc3\u6307\u4ee4\uff1aMB_COMM_LOAD\uff08\u901a\u4fe1\u521d\u59cb\u5316\uff09\u3001MB_MASTER\uff08\u4e3b\u7ad9\u901a\u4fe1\uff09\u548c MB_SLAVE\uff08\u4ece\u7ad9\u901a\u4fe1\uff09\u3002\u8fd9\u4e9b\u6307\u4ee4\u4f4d\u4e8e&#8221;\u901a\u4fe1&#8221;\u6307\u4ee4\u7ec4\u7684&#8221;\u5176\u5b83&#8221;\u2192&#8221;Modbus&#8221;\u8def\u5f84\u4e0b\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">MB_COMM_LOAD \u2014 \u901a\u4fe1\u6a21\u5757\u521d\u59cb\u5316<\/h3>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-large is-resized\"><img decoding=\"async\" src=\"https:\/\/www.modbus.cn\/wp-content\/uploads\/diagrams\/a09-plc-address-mapping.svg\" style=\"aspect-ratio:1.8890279516061743;width:809px;height:auto\"><figcaption class=\"wp-element-caption\">\u25b2 \u56fe2\uff1a\u897f\u95e8\u5b50\/\u4e09\u83f1\/\u53f0\u8fbe\/\u6c47\u5ddd\u56db\u54c1\u724c PLC \u4e0e Modbus \u6807\u51c6\u5730\u5740\u7684\u5b8c\u6574\u6620\u5c04\u5173\u7cfb\u3002<\/figcaption><\/figure>\n<\/div>\n\n\n<p class=\"wp-block-paragraph\">\u5728\u4f7f\u7528\u4efb\u4f55 Modbus \u901a\u4fe1\u4e4b\u524d\uff0c\u5fc5\u987b\u5148\u8c03\u7528 MB_COMM_LOAD \u6307\u4ee4\u5bf9\u901a\u4fe1\u6a21\u5757\u8fdb\u884c\u914d\u7f6e\u3002\u8be5\u6307\u4ee4\u7684\u529f\u80fd\u7c7b\u4f3c\u4e8e\u8bbe\u5b9a\u4e32\u53e3\u7684\u6ce2\u7279\u7387\u3001\u6821\u9a8c\u4f4d\u3001\u6570\u636e\u4f4d\u548c\u505c\u6b62\u4f4d\u7b49\u57fa\u672c\u53c2\u6570\uff0c\u540c\u65f6\u6307\u5b9a Modbus \u7684\u5de5\u4f5c\u6a21\u5f0f\uff08RTU \u6216 ASCII\uff09\u3002<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table><thead><tr><th>\u53c2\u6570<\/th><th>\u6570\u636e\u7c7b\u578b<\/th><th>\u8bf4\u660e<\/th><th>\u5178\u578b\u503c<\/th><\/tr><\/thead><tbody><tr><td>REQ<\/td><td>Bool<\/td><td>\u4e0a\u5347\u6cbf\u89e6\u53d1\u914d\u7f6e<\/td><td>M0.0<\/td><\/tr><tr><td>PORT<\/td><td>UInt<\/td><td>\u901a\u4fe1\u6a21\u5757\u786c\u4ef6\u6807\u8bc6\u7b26<\/td><td>269\uff08CM1241 RS485\uff09<\/td><\/tr><tr><td>BAUD<\/td><td>UInt<\/td><td>\u6ce2\u7279\u7387<\/td><td>9600 \/ 19200 \/ 38400 \/ 115200<\/td><\/tr><tr><td>PARITY<\/td><td>UInt<\/td><td>\u6821\u9a8c\u4f4d\uff1a0=\u65e0 1=\u5947 2=\u5076<\/td><td>2\uff08\u5076\u6821\u9a8c\uff09<\/td><\/tr><tr><td>FLOW_CTRL<\/td><td>UInt<\/td><td>\u6d41\u63a7\u5236\uff1a0=\u65e0 1=RTS\/CTS<\/td><td>0<\/td><\/tr><tr><td>RTS_ON_DLY<\/td><td>UInt<\/td><td>RTS \u5f00\u542f\u5ef6\u65f6(ms)<\/td><td>0<\/td><\/tr><tr><td>RTS_OFF_DLY<\/td><td>UInt<\/td><td>RTS \u5173\u95ed\u5ef6\u65f6(ms)<\/td><td>0<\/td><\/tr><tr><td>RESP_TO<\/td><td>UInt<\/td><td>\u54cd\u5e94\u8d85\u65f6(ms)<\/td><td>1000<\/td><\/tr><tr><td>MB_DB<\/td><td>Variant<\/td><td>MB_MASTER\/SLAVE \u7684\u80cc\u666f\u6570\u636e\u5757<\/td><td>\u5bf9\u5e94\u6307\u4ee4\u7684 DB \u53f7<\/td><\/tr><tr><td>DONE<\/td><td>Bool<\/td><td>\u914d\u7f6e\u5b8c\u6210\u6807\u5fd7<\/td><td>\u2014<\/td><\/tr><tr><td>ERROR<\/td><td>Bool<\/td><td>\u9519\u8bef\u6807\u5fd7<\/td><td>\u2014<\/td><\/tr><tr><td>STATUS<\/td><td>Word<\/td><td>\u72b6\u6001\u7801(16#0000=\u65e0\u9519\u8bef)<\/td><td>\u2014<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\">MB_MASTER \u2014 Modbus \u4e3b\u7ad9\u901a\u4fe1\u6307\u4ee4<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">MB_MASTER \u6307\u4ee4\u4f7f S7-1200\/1500 \u4f5c\u4e3a Modbus RTU \u4e3b\u7ad9\uff0c\u5411\u4ece\u7ad9\u8bbe\u5907\u53d1\u9001\u8bfb\u5199\u8bf7\u6c42\u3002\u8be5\u6307\u4ee4\u652f\u6301\u529f\u80fd\u7801 01\uff08\u8bfb\u7ebf\u5708\uff09\u300102\uff08\u8bfb\u79bb\u6563\u8f93\u5165\uff09\u300103\uff08\u8bfb\u4fdd\u6301\u5bc4\u5b58\u5668\uff09\u300104\uff08\u8bfb\u8f93\u5165\u5bc4\u5b58\u5668\uff09\u300105\uff08\u5199\u5355\u7ebf\u5708\uff09\u300106\uff08\u5199\u5355\u5bc4\u5b58\u5668\uff09\u300115\uff08\u5199\u591a\u7ebf\u5708\uff09\u548c 16\uff08\u5199\u591a\u5bc4\u5b58\u5668\uff09\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>\/\/ MB_MASTER \u68af\u5f62\u56fe\u53c2\u6570\u8bf4\u660e\uff08SCL \u8868\u793a\uff09\n\"MB_MASTER_DB\"(\n    REQ    := #Start_Read,        \/\/ \u4e0a\u5347\u6cbf\u89e6\u53d1\n    MB_ADDR:= 1,                  \/\/ \u4ece\u7ad9\u5730\u5740\uff081-247\uff09\n    MODE   := 0,                  \/\/ 0=\u8bfb 1=\u5199\n    DATA_ADDR := 40001,           \/\/ \u4ece\u7ad9\u6570\u636e\u8d77\u59cb\u5730\u5740\n    DATA_LEN  := 10,              \/\/ \u6570\u636e\u957f\u5ea6\uff08\u5b57\u6570\uff09\n    DATA_PTR  := P#DB1.DBX0.0 WORD 10  \/\/ \u672c\u5730\u6570\u636e\u5b58\u50a8\u533a\u6307\u9488\n);\n\n\/\/ \u5e38\u89c1\u6a21\u5f0f\uff1a\n\/\/ MODE=0, DATA_ADDR=40001 \u2192 \u529f\u80fd\u7801 03 \u8bfb\u4fdd\u6301\u5bc4\u5b58\u5668\n\/\/ MODE=1, DATA_ADDR=40001 \u2192 \u529f\u80fd\u7801 06\/16 \u5199\u4fdd\u6301\u5bc4\u5b58\u5668<\/code><\/pre>\n\n\n\n<h3 class=\"wp-block-heading\">MB_SLAVE \u2014 Modbus \u4ece\u7ad9\u901a\u4fe1\u6307\u4ee4<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">MB_SLAVE \u6307\u4ee4\u4f7f S7-1200\/1500 \u4f5c\u4e3a Modbus RTU \u4ece\u7ad9\uff0c\u54cd\u5e94\u4e3b\u7ad9\u7684\u8bfb\u5199\u8bf7\u6c42\u3002\u8be5\u6307\u4ee4\u5141\u8bb8\u4e3b\u7ad9\u8bbf\u95ee PLC \u5185\u90e8\u7684\u7279\u5b9a\u6570\u636e\u533a\u57df\uff08\u7ebf\u5708\u3001\u79bb\u6563\u8f93\u5165\u3001\u8f93\u5165\u5bc4\u5b58\u5668\u3001\u4fdd\u6301\u5bc4\u5b58\u5668\uff09\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>\/\/ MB_SLAVE \u68af\u5f62\u56fe\u53c2\u6570\u8bf4\u660e\uff08SCL \u8868\u793a\uff09\n\"MB_SLAVE_DB\"(\n    MB_ADDR    := 1,              \/\/ \u672c\u4ece\u7ad9\u5730\u5740\n    MB_HOLD_REG := P#DB2.DBX0.0 WORD 100  \/\/ \u4fdd\u6301\u5bc4\u5b58\u5668\u6620\u5c04\u533a\n);<\/code><\/pre>\n\n\n\n<h3 class=\"wp-block-heading\">\u5b8c\u6574\u68af\u5f62\u56fe\u793a\u4f8b\uff1a\u8bfb\u6e29\u6e7f\u5ea6\u4f20\u611f\u5668<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u4ee5\u4e0b\u662f\u4e00\u4e2a\u5b8c\u6574\u7684\u897f\u95e8\u5b50 S7-1200 \u8bfb\u53d6 Modbus \u6e29\u6e7f\u5ea6\u4f20\u611f\u5668\u7684\u7a0b\u5e8f\u793a\u4f8b\u3002\u4f20\u611f\u5668\u4ece\u7ad9\u5730\u5740\u4e3a 1\uff0c\u6e29\u6e7f\u5ea6\u5206\u522b\u5b58\u50a8\u5728\u4fdd\u6301\u5bc4\u5b58\u5668 40001 \u548c 40002 \u4e2d\uff0c\u6ce2\u7279\u7387 9600\uff0c\u5076\u6821\u9a8c\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>\u7f51\u7edc 1\uff1a\u521d\u59cb\u5316\u901a\u4fe1\u6a21\u5757\uff08\u9996\u6b21\u626b\u63cf\u8c03\u7528\uff09\n\u250c\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2510\n\u2502  M0.0    MB_COMM_LOAD        \u2502\n\u2502\u2500\u2500\u2524P\u251c\u2500\u2500\u2500\u2500\u2524EN              DONE\u251c\u2500\u2500M0.1\n\u2502         \u2502PORT:  269   ERROR\u251c\u2500\u2500M0.2\n\u2502         \u2502BAUD:  9600  STATUS\u251c\u2500\u2500MW2\n\u2502         \u2502PARITY:2           \u2502\n\u2502         \u2502FLOW_CTRL:0        \u2502\n\u2502         \u2502RESP_TO:1000       \u2502\n\u2502         \u2502MB_DB:MB_MASTER_DB \u2502\n\u2514\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2518\n\n\u7f51\u7edc 2\uff1a\u5468\u671f\u6027\u8bfb\u53d6\u4f20\u611f\u5668\u6570\u636e\uff08\u6bcf 500ms\uff09\n\u250c\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2510\n\u2502  M0.5    MB_MASTER           \u2502\n\u2502\u2500\u2500\u2524P\u251c\u2500\u2500\u2500\u2500\u2524EN              DONE\u251c\u2500\u2500M1.1\n\u2502         \u2502MB_ADDR:1    ERROR\u251c\u2500\u2500M1.2\n\u2502         \u2502MODE:0       STATUS\u251c\u2500\u2500MW4\n\u2502         \u2502DATA_ADDR:40001     \u2502\n\u2502         \u2502DATA_LEN:2          \u2502\n\u2502         \u2502DATA_PTR:P#DB3.DBX0.0 WORD 2\n\u2514\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2518\n\/\/ \u8bfb\u53d6\u7ed3\u679c\uff1a\n\/\/ DB3.DBW0 = \u6e29\u5ea6\u503c\uff08\u9700\u8981\u9664\u4ee5 10 \u5f97\u5230\u5b9e\u9645\u6e29\u5ea6\uff09\n\/\/ DB3.DBW2 = \u6e7f\u5ea6\u503c\uff08\u9700\u8981\u9664\u4ee5 10 \u5f97\u5230\u5b9e\u9645\u6e7f\u5ea6\uff09<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u5173\u4e8e\u897f\u95e8\u5b50\u535a\u9014\u5e73\u53f0\u66f4\u8be6\u7ec6\u7684 Modbus \u914d\u7f6e\uff0c\u8bf7\u53c2\u8003 <a href=\"https:\/\/www.modbus.cn\/en\/\" rel=\"noopener noreferrer nofollow\">modbus.cn<\/a> \u4e0a\u5173\u4e8e\u897f\u95e8\u5b50\u901a\u4fe1\u6a21\u5757\u786c\u4ef6\u9009\u578b\u7684\u76f8\u5173\u6587\u7ae0\u3002\u4e5f\u53ef\u4ee5\u67e5\u770b\u6211\u4eec\u7684<a href=\"https:\/\/www.modbus.cn\/en\/siemens-modbus-config\/\" rel=\"noopener noreferrer nofollow\">\u897f\u95e8\u5b50 Modbus RTU \u5b8c\u6574\u914d\u7f6e\u6559\u7a0b<\/a>\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u4e09\u83f1 FX5U Modbus \u7f16\u7a0b\u8be6\u89e3<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u4e09\u83f1 Modbus \u901a\u4fe1<\/strong>\u5728 FX5U \u7cfb\u5217\u4e0a\u901a\u8fc7 ADPRW \u4e13\u7528\u6307\u4ee4\u5b9e\u73b0\uff0c\u76f8\u6bd4 FX3U \u65f6\u4ee3\u9700\u8981\u989d\u5916\u9002\u914d\u5668\u7684\u65b9\u6848\u6709\u4e86\u8d28\u7684\u98de\u8dc3\u3002FX5U \u5185\u7f6e\u7684 RS-485 \u7aef\u53e3\u76f4\u63a5\u652f\u6301 Modbus RTU \u534f\u8bae\uff0c\u65e0\u9700\u989d\u5916\u786c\u4ef6\u6295\u5165\u3002ADPRW \u6307\u4ee4\u7684\u5f3a\u5927\u4e4b\u5904\u5728\u4e8e\u4e00\u6761\u6307\u4ee4\u5373\u53ef\u5b8c\u6210 Modbus \u529f\u80fd\u7801\u7684\u6307\u5b9a\u548c\u6570\u636e\u7684\u6536\u53d1\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">ADPRW \u6307\u4ee4\u8be6\u89e3<\/h3>\n\n\n\n<figure class=\"wp-block-table\"><table><thead><tr><th>\u64cd\u4f5c\u6570<\/th><th>\u8bf4\u660e<\/th><th>\u8bbe\u5b9a\u8303\u56f4<\/th><th>\u793a\u4f8b<\/th><\/tr><\/thead><tbody><tr><td>S1<\/td><td>\u4ece\u7ad9\u5730\u5740<\/td><td>H1-HF7\uff081-247\uff09<\/td><td>H1<\/td><\/tr><tr><td>S2<\/td><td>Function Code<\/td><td>H1-H6, HF, H10<\/td><td>H3\uff08\u8bfb\u4fdd\u6301\u5bc4\u5b58\u5668\uff09<\/td><\/tr><tr><td>S3<\/td><td>Modbus \u5730\u5740<\/td><td>H0-HFFFF<\/td><td>H0\uff08\u5bf9\u5e94 40001\uff09<\/td><\/tr><tr><td>S4<\/td><td>\u6570\u636e\u70b9\u6570<\/td><td>H1-H7D0\uff08\u5b57\uff09<\/td><td>K2<\/td><\/tr><tr><td>D1<\/td><td>\u53d1\u9001\/\u63a5\u6536\u6570\u636e\u8d77\u59cb\u8f6f\u5143\u4ef6<\/td><td>\u4f4d\/\u5b57\u8f6f\u5143\u4ef6<\/td><td>D100<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">ADPRW \u6307\u4ee4\u5728\u6267\u884c\u65f6\uff0cPLC \u81ea\u52a8\u6784\u5efa Modbus \u62a5\u6587\u5e27\u3001\u8ba1\u7b97 CRC \u6821\u9a8c\u7801\u3001\u53d1\u9001\u62a5\u6587\u5e76\u7b49\u5f85\u4ece\u7ad9\u56de\u590d\u3002\u5bf9\u4e8e\u5199\u64cd\u4f5c\uff08\u529f\u80fd\u7801 H6\/H10\uff09\uff0cD1 \u6307\u5b9a\u7684\u8f6f\u5143\u4ef6\u533a\u57df\u5b58\u50a8\u5f85\u53d1\u9001\u7684\u6570\u636e\uff1b\u5bf9\u4e8e\u8bfb\u64cd\u4f5c\uff08\u529f\u80fd\u7801 H1-H4\uff09\uff0cD1 \u6307\u5b9a\u7684\u8f6f\u5143\u4ef6\u533a\u57df\u5b58\u50a8\u63a5\u6536\u5230\u7684\u6570\u636e\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">ADPRW \u5173\u952e\u6ce8\u610f\u4e8b\u9879<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u5730\u5740\u504f\u79fb\u89c4\u5219\uff1aModbus \u534f\u8bae\u5730\u5740\u4ece 0 \u5f00\u59cb\u7f16\u53f7\uff0c\u4f46\u6587\u6863\u4e2d\u7684\u5730\u5740\uff08\u5982 40001\uff09\u4ece 1 \u5f00\u59cb\u3002\u5728 ADPRW \u7684 S3 \u64cd\u4f5c\u6570\u4e2d\uff0c\u4fdd\u6301\u5bc4\u5b58\u5668\u4ece H0 \u5f00\u59cb\u5bf9\u5e94 40001\uff0c\u7ebf\u5708\u4ece H0 \u5f00\u59cb\u5bf9\u5e94 00001\u3002<\/li>\n\n\n\n<li>\u529f\u80fd\u7801 H3\uff08\u8bfb\u4fdd\u6301\u5bc4\u5b58\u5668\uff09\u4e00\u6b21\u6700\u591a\u8bfb\u53d6 125 \u4e2a\u5b57\uff08H7D\uff09\u3002<\/li>\n\n\n\n<li>\u529f\u80fd\u7801 H10\uff08\u5199\u591a\u5bc4\u5b58\u5668\uff09\u4e00\u6b21\u6700\u591a\u5199\u5165 123 \u4e2a\u5b57\uff08H7B\uff09\u3002<\/li>\n\n\n\n<li>ADPRW \u6307\u4ee4\u4e3a\u6267\u884c\u5b8c\u6210\u578b\u6307\u4ee4\uff0c\u9700\u8981\u8fde\u7eed\u591a\u4e2a\u626b\u63cf\u5468\u671f\u624d\u80fd\u5b8c\u6210\u4e00\u6b21\u901a\u4fe1\u3002<\/li>\n\n\n\n<li>\u5fc5\u987b\u901a\u8fc7\u7279\u6b8a\u7ee7\u7535\u5668 SM \u548c\u7279\u6b8a\u5bc4\u5b58\u5668 SD \u8fdb\u884c\u901a\u4fe1\u72b6\u6001\u5224\u65ad\u3002<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">\u68af\u5f62\u56fe\u793a\u4f8b\uff1aFX5U \u8bfb\u53d6\u53d8\u9891\u5668\u53c2\u6570<\/h3>\n\n\n\n<pre class=\"wp-block-code\"><code>\/\/ \u7f51\u7edc 1\uff1a\u901a\u4fe1\u53c2\u6570\u8bbe\u7f6e\uff08\u901a\u8fc7 PLC \u53c2\u6570\u914d\u7f6e\uff0c\u65e0\u9700\u68af\u5f62\u56fe\uff09\n\/\/ \u901a\u9053 1\uff08CH1\uff09\uff1a\u5185\u7f6e RS-485\n\/\/ \u534f\u8bae\uff1aModbus RTU\n\/\/ \u6ce2\u7279\u7387\uff1a19200 bps\n\/\/ \u6570\u636e\u4f4d\uff1a8\n\/\/ \u505c\u6b62\u4f4d\uff1a1\n\/\/ \u6821\u9a8c\uff1a\u5076\u6821\u9a8c\n\n\/\/ \u7f51\u7edc 2\uff1a\u8bfb\u53d6\u53d8\u9891\u5668\u8fd0\u884c\u9891\u7387\u548c\u8f93\u51fa\u7535\u6d41\n\u250c\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2510\n\u2502 M0               &#91;ADPRW    ]\u2502\n\u2502\u2500\u2500\u2524\u251c\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2524S1: H1    \u2502  \/\/ \u4ece\u7ad9\u5730\u5740 1\n\u2502                  \u2502S2: H3    \u2502  \/\/ \u529f\u80fd\u7801\uff1a\u8bfb\u4fdd\u6301\u5bc4\u5b58\u5668\n\u2502                  \u2502S3: H100  \u2502  \/\/ \u8d77\u59cb\u5730\u5740\uff1a40101\uff08\u9891\u7387\uff09\n\u2502                  \u2502S4: K2    \u2502  \/\/ \u8bfb\u53d6 2 \u4e2a\u5b57\n\u2502                  \u2502D1: D100  \u2502  \/\/ \u6570\u636e\u5b58\u50a8\u5230 D100-D101\n\u2514\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2518\n\n\/\/ \u7f51\u7edc 3\uff1a\u6570\u636e\u5904\u7406\n\/\/ D100 = \u8fd0\u884c\u9891\u7387\uff08\u5355\u4f4d 0.01Hz\uff0c\u9700\u8981\u9664\u4ee5 100\uff09\n\/\/ D101 = \u8f93\u51fa\u7535\u6d41\uff08\u5355\u4f4d 0.1A\uff0c\u9700\u8981\u9664\u4ee5 10\uff09\n\n\/\/ \u7f51\u7edc 4\uff1a\u5199\u5165\u8fd0\u884c\u9891\u7387\u8bbe\u5b9a\n\u250c\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2510\n\u2502 M1               &#91;ADPRW    ]\u2502\n\u2502\u2500\u2500\u2524\u251c\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2524S1: H1    \u2502  \/\/ \u4ece\u7ad9\u5730\u5740 1\n\u2502                  \u2502S2: H6    \u2502  \/\/ \u529f\u80fd\u7801\uff1a\u5199\u5355\u5bc4\u5b58\u5668\n\u2502                  \u2502S3: H200  \u2502  \/\/ \u76ee\u6807\u5730\u5740\uff1a40201\n\u2502                  \u2502S4: K0    \u2502  \/\/ \u5199\u64cd\u4f5c\u65f6\u5ffd\u7565\n\u2502                  \u2502D1: D200  \u2502  \/\/ \u5199\u5165\u7684\u6570\u636e\n\u2514\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2518<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u4e09\u83f1 FX5U \u7684 Modbus \u901a\u4fe1\u901f\u5ea6\u53ef\u8fbe 115200 bps\uff0c\u5728\u591a\u7ad9\u8f6e\u8be2\u573a\u666f\u4e0b\u8868\u73b0\u51fa\u8272\u3002\u5173\u4e8e\u4e09\u83f1 Modbus \u901a\u4fe1\u7684\u66f4\u6df1\u5165\u5185\u5bb9\uff0c\u8bf7\u53c2\u8003 <a href=\"https:\/\/www.modbus.cn\/en\/\" rel=\"noopener noreferrer nofollow\">modbus.cn<\/a> \u4e0a\u7684<a href=\"https:\/\/www.modbus.cn\/en\/mitsubishi-modbus-tutorial\/\" rel=\"noopener noreferrer nofollow\">\u4e09\u83f1 Modbus \u901a\u4fe1\u5b8c\u6574\u6559\u7a0b<\/a>\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u53f0\u8fbe DVP\/AS \u7cfb\u5217 Modbus \u7f16\u7a0b\u8be6\u89e3<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u53f0\u8fbe PLC Modbus<\/strong> \u901a\u4fe1\u5728 DVP \u548c AS \u7cfb\u5217\u4e0a\u6709\u975e\u5e38\u4f18\u96c5\u7684\u5b9e\u73b0\u3002<strong>MODRW \u6307\u4ee4<\/strong>\u662f\u53f0\u8fbe PLC \u8fdb\u884c Modbus \u901a\u4fe1\u7684\u6838\u5fc3\u6307\u4ee4\uff0c\u5176\u8bbe\u8ba1\u7406\u5ff5\u662f&#8221;\u4e00\u6761\u6307\u4ee4\u89e3\u51b3\u6240\u6709\u95ee\u9898&#8221;\u2014\u2014\u65e0\u8bba\u662f\u8bfb\u53d6\u8fd8\u662f\u5199\u5165\u3001\u7ebf\u5708\u8fd8\u662f\u5bc4\u5b58\u5668\uff0c\u90fd\u901a\u8fc7\u8fd9\u6761\u6307\u4ee4\u5b8c\u6210\u3002AS \u7cfb\u5217\u66f4\u662f\u63d0\u4f9b\u4e86\u589e\u5f3a\u7248\u7684 M_MODRW \u6307\u4ee4\uff0c\u652f\u6301\u66f4\u591a\u529f\u80fd\u7801\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">MODRW \u6307\u4ee4\u53c2\u6570\u8bf4\u660e<\/h3>\n\n\n\n<figure class=\"wp-block-table\"><table><thead><tr><th>\u53c2\u6570<\/th><th>\u542b\u4e49<\/th><th>DVP \u7cfb\u5217<\/th><th>AS \u7cfb\u5217<\/th><\/tr><\/thead><tbody><tr><td>S<\/td><td>\u8054\u673a\u88c5\u7f6e\u5730\u5740<\/td><td>K1-K254<\/td><td>K1-K254<\/td><\/tr><tr><td>S1<\/td><td>Function Code<\/td><td>K1\/K2\/K3\/K4\/K5\/K6\/K15\/K16<\/td><td>\u540c\u4e0a+\u6269\u5c55<\/td><\/tr><tr><td>S2<\/td><td>\u76ee\u6807\u88c5\u7f6e\u5730\u5740<\/td><td>0-9999<\/td><td>0-65535<\/td><\/tr><tr><td>S3<\/td><td>\u6570\u636e\u957f\u5ea6<\/td><td>1-127<\/td><td>1-200<\/td><\/tr><tr><td>D<\/td><td>\u672c\u673a\u6570\u636e\u8d77\u59cb\u5bc4\u5b58\u5668<\/td><td>D \u5bc4\u5b58\u5668<\/td><td>D \u5bc4\u5b58\u5668<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\">\u68af\u5f62\u56fe\u793a\u4f8b\uff1a\u53f0\u8fbe DVP \u8bfb\u53d6\u667a\u80fd\u7535\u8868<\/h3>\n\n\n\n<pre class=\"wp-block-code\"><code>\/\/ \u53f0\u8fbe DVP-ES2 \u901a\u8fc7 COM2\uff08RS-485\uff09\u8bfb\u53d6\u667a\u80fd\u7535\u8868\u6570\u636e\n\/\/ \u7535\u8868\u4ece\u7ad9\u5730\u5740\uff1a1\uff0c\u6ce2\u7279\u7387 9600\uff0c\u65e0\u6821\u9a8c\n\n\/\/ \u7f51\u7edc\uff1a\u89e6\u53d1\u8bfb\u53d6\u7535\u8868\u6570\u636e\n\u250c\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2510\n\u2502 M1002             &#91; SET  M0 ]\u2502  \/\/ \u4e0a\u7535\u521d\u59cb\u5316\n\u2514\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2518\n\n\u250c\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2510\n\u2502 M1013             &#91; MODRW   ]\u2502  \/\/ 1 \u79d2\u65f6\u949f\u8109\u51b2\u89e6\u53d1\n\u2502\u2500\u2500\u2524\u251c\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2524S:  K1    \u2502  \/\/ \u4ece\u7ad9\u5730\u5740 1\n\u2502                   \u2502S1: K3    \u2502  \/\/ \u529f\u80fd\u7801\uff1a\u8bfb\u4fdd\u6301\u5bc4\u5b58\u5668\n\u2502                   \u2502S2: K0    \u2502  \/\/ \u8d77\u59cb\u5730\u5740\uff1a040001\n\u2502                   \u2502S3: K6    \u2502  \/\/ \u8bfb\u53d6 6 \u4e2a\u5b57\n\u2502                   \u2502D:  D0    \u2502  \/\/ \u5b58\u50a8\u5230 D0-D5\n\u2514\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2518\n\n\/\/ \u8bfb\u53d6\u7ed3\u679c\u6620\u5c04\uff08\u67d0\u54c1\u724c\u667a\u80fd\u7535\u8868\uff09\uff1a\n\/\/ D0 = \u7535\u538b\uff08\u5355\u4f4d 0.1V \u2192 D0\/10 = \u5b9e\u9645\u7535\u538b\uff09\n\/\/ D1 = \u7535\u6d41\uff08\u5355\u4f4d 0.01A \u2192 D1\/100 = \u5b9e\u9645\u7535\u6d41\uff09\n\/\/ D2 = \u6709\u529f\u529f\u7387\uff08\u5355\u4f4d 1W\uff09\n\/\/ D3 = \u65e0\u529f\u529f\u7387\uff08\u5355\u4f4d 1Var\uff09\n\/\/ D4 = \u529f\u7387\u56e0\u6570\uff08\u5355\u4f4d 0.001 \u2192 D4\/1000\uff09\n\/\/ D5 = \u9891\u7387\uff08\u5355\u4f4d 0.01Hz \u2192 D5\/100\uff09<\/code><\/pre>\n\n\n\n<h3 class=\"wp-block-heading\">\u53f0\u8fbe AS \u7cfb\u5217 M_MODRW \u589e\u5f3a\u529f\u80fd<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u53f0\u8fbe AS \u7cfb\u5217 PLC\uff08\u5982 AS228T-A\uff09\u5728 MODRW \u57fa\u7840\u4e0a\u63d0\u4f9b\u4e86 M_MODRW \u6307\u4ee4\uff0c\u4e3b\u8981\u589e\u5f3a\u5305\u62ec\uff1a\u652f\u6301 32 \u4f4d\u6570\u636e\u8bfb\u5199\u3001\u652f\u6301\u5b57\u7b26\u4e32\u4f20\u8f93\u3001\u652f\u6301\u4f4d\u5199\u5165\u3001\u901a\u4fe1\u8d85\u65f6\u53ef\u914d\u7f6e\uff0c\u4ee5\u53ca\u6700\u591a\u53ef\u540c\u65f6\u6fc0\u6d3b 8 \u6761\u901a\u4fe1\u6307\u4ee4\u3002\u8fd9\u4e9b\u589e\u5f3a\u4f7f\u5f97 AS \u7cfb\u5217\u5728\u590d\u6742 Modbus \u901a\u4fe1\u573a\u666f\u4e0b\u5177\u6709\u660e\u663e\u4f18\u52bf\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>\/\/ \u53f0\u8fbe AS \u7cfb\u5217 M_MODRW \u793a\u4f8b\uff1a\u8bfb\u53d6 32 \u4f4d\u7535\u80fd\u7d2f\u8ba1\u503c\n\u250c\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2510\n\u2502 M0                  &#91; M_MODRW   ]\u2502\n\u2502\u2500\u2500\u2524\u251c\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2524S:  K1       \u2502  \/\/ \u4ece\u7ad9\u5730\u5740\n\u2502                    \u2502S1: K3       \u2502  \/\/ \u529f\u80fd\u7801\uff1a\u8bfb\u5bc4\u5b58\u5668\n\u2502                    \u2502S2: K100     \u2502  \/\/ \u8d77\u59cb\u5730\u5740\n\u2502                    \u2502S3: K2       \u2502  \/\/ \u8bfb\u53d6 2 \u4e2a\u5b57\uff08\u542b 32 \u4f4d\u6570\u636e\uff09\n\u2502                    \u2502D:  D100     \u2502  \/\/ \u5b58\u50a8\u5230 D100\uff08\u4f4e\u5b57\uff09\u3001D101\uff08\u9ad8\u5b57\uff09\n\u2502                    \u2502Mode: D200   \u2502  \/\/ \u6a21\u5f0f\u8bbe\u5b9a\n\u2514\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2518<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u53f0\u8fbe PLC \u7684 Modbus \u7f16\u7a0b\u4f53\u9a8c\u5728\u56fd\u4ea7\u54c1\u724c\u4e2d\u582a\u79f0\u4e00\u6d41\uff0cMODRW \u6307\u4ee4\u7684\u7b80\u6d01\u6027\u5927\u5e45\u964d\u4f4e\u4e86\u5f00\u53d1\u95e8\u69db\u3002\u66f4\u591a\u53f0\u8fbe PLC Modbus \u901a\u4fe1\u7684\u6280\u672f\u7ec6\u8282\uff0c\u8bf7\u8bbf\u95ee <a href=\"https:\/\/www.modbus.cn\/en\/\" rel=\"noopener noreferrer nofollow\">modbus.cn<\/a> \u67e5\u9605<a href=\"https:\/\/www.modbus.cn\/en\/delta-modbus-guide\/\" rel=\"noopener noreferrer nofollow\">\u53f0\u8fbe PLC Modbus \u901a\u4fe1\u5b8c\u6574\u6307\u5357<\/a>\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u6c47\u5ddd H3U Modbus \u81ea\u7531\u53e3\u7f16\u7a0b\u8be6\u89e3<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u6c47\u5ddd Modbus \u7f16\u7a0b<\/strong>\u5728 H3U \u7cfb\u5217\u4e0a\u6709\u72ec\u7279\u4e4b\u5904\u3002\u4e0d\u540c\u4e8e\u5176\u4ed6\u54c1\u724c\u63d0\u4f9b\u4e13\u7528 Modbus \u6307\u4ee4\u7684\u505a\u6cd5\uff0cH3U \u91c7\u7528\u81ea\u7531\u53e3\u901a\u4fe1\u65b9\u5f0f\uff0c\u5de5\u7a0b\u5e08\u9700\u8981\u624b\u52a8\u6784\u5efa Modbus \u62a5\u6587\u5e27\u5e76\u901a\u8fc7 RS \u6307\u4ee4\u53d1\u9001\u3002\u8fd9\u79cd\u65b9\u5f0f\u867d\u7136\u589e\u52a0\u4e86\u5f00\u53d1\u96be\u5ea6\uff0c\u4f46\u7ed9\u4e88\u4e86\u5de5\u7a0b\u5e08\u5bf9\u901a\u4fe1\u8fc7\u7a0b\u7684\u5b8c\u5168\u63a7\u5236\u6743\uff0c\u5728\u975e\u6807\u51c6\u534f\u8bae\u6216\u7279\u6b8a\u9700\u6c42\u573a\u666f\u4e0b\u975e\u5e38\u6709\u7528\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">H3U \u81ea\u7531\u53e3\u901a\u4fe1\u57fa\u672c\u539f\u7406<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u6c47\u5ddd H3U \u7684\u4e32\u53e3\u901a\u4fe1\u57fa\u4e8e RS \u6307\u4ee4\uff08\u6570\u636e\u53d1\u9001\u6307\u4ee4\uff09\u548c RC \u6307\u4ee4\uff08\u6570\u636e\u63a5\u6536\u6307\u4ee4\uff09\u3002\u8981\u5b9e\u73b0 Modbus RTU \u901a\u4fe1\uff0c\u9700\u8981\u6309\u7167 Modbus \u534f\u8bae\u89c4\u8303\u624b\u52a8\u6784\u5efa\u62a5\u6587\u5e27\uff0c\u5305\u62ec\u4ece\u7ad9\u5730\u5740\u3001\u529f\u80fd\u7801\u3001\u6570\u636e\u57df\u548c CRC \u6821\u9a8c\u7801\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">CRC-16 \u6821\u9a8c\u7b97\u6cd5\u5b9e\u73b0<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Modbus RTU \u7684 CRC \u6821\u9a8c\u7801\u662f\u81ea\u7531\u53e3\u7f16\u7a0b\u4e2d\u6700\u5173\u952e\u7684\u90e8\u5206\u3002\u4ee5\u4e0b\u662f\u5728 H3U \u4e0a\u5b9e\u73b0 CRC-16 \u6821\u9a8c\u7684\u68af\u5f62\u56fe\u903b\u8f91\u8bf4\u660e\uff08\u6821\u9a8c\u591a\u9879\u5f0f\uff1a0xA001\uff09\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>\/\/ CRC-16 \u8ba1\u7b97\u6d41\u7a0b\uff08Modbus RTU \u6807\u51c6\u7b97\u6cd5\uff09\n\/\/ \u8f93\u5165\uff1a\u5f85\u6821\u9a8c\u6570\u636e\u5b58\u50a8\u5728 D100-D105\uff086 \u5b57\u8282\uff0c\u4e0d\u542b CRC\uff09\uff0c\u5b57\u8282\u6570\u5b58\u4e8e D0\n\/\/ \u8f93\u51fa\uff1aCRC16 \u7ed3\u679c\u9ad8\u5b57\u8282\u5b58\u4e8e D200\uff0c\u4f4e\u5b57\u8282\u5b58\u4e8e D201\n\/\/\n\/\/ \u7b97\u6cd5\u4f2a\u4ee3\u7801\uff1a\n\/\/ 1. \u9884\u7f6e 16 \u4f4d CRC \u5bc4\u5b58\u5668\u4e3a 0xFFFF\n\/\/ 2. \u5c06\u7b2c\u4e00\u4e2a 8 \u4f4d\u6570\u636e\u4e0e CRC \u5bc4\u5b58\u5668\u4f4e\u5b57\u8282\u5f02\u6216\uff0c\u7ed3\u679c\u5b58\u5165 CRC \u5bc4\u5b58\u5668\n\/\/ 3. CRC \u5bc4\u5b58\u5668\u53f3\u79fb\u4e00\u4f4d\uff0c\u6700\u9ad8\u4f4d\u8865 0\n\/\/ 4. \u79fb\u51fa\u4f4d\u5982\u679c\u4e3a 1\uff0c\u5219 CRC \u5bc4\u5b58\u5668\u4e0e 0xA001 \u5f02\u6216\n\/\/ 5. \u91cd\u590d\u6b65\u9aa4 3-4 \u5171 8 \u6b21\n\/\/ 6. \u5904\u7406\u4e0b\u4e00\u4e2a\u5b57\u8282\uff0c\u91cd\u590d\u6b65\u9aa4 2-5\n\/\/ 7. \u6240\u6709\u5b57\u8282\u5904\u7406\u5b8c\u6210\u540e\uff0cCRC \u5bc4\u5b58\u5668\u7684\u503c\u5373\u4e3a CRC16 \u6821\u9a8c\u7801\n\n\/\/ H3U \u68af\u5f62\u56fe\u4e2d\u7684\u5b9e\u73b0\uff08\u4f7f\u7528\u5faa\u73af\u6307\u4ee4\uff09\n\/\/ \u6ce8\u610f\uff1aH3U \u5185\u7f6e\u4e86 CRC \u6821\u9a8c\u6307\u4ee4\uff08CRC\uff09\uff0c\u53ef\u5c06\u6821\u9a8c\u7801\u8ffd\u52a0\u5230\u53d1\u9001\u6570\u636e\u672b\u5c3e\n\/\/ CRC D100 D106 K6\n\/\/ \u529f\u80fd\uff1a\u5bf9 D100 \u5f00\u59cb\u7684 6 \u5b57\u8282\u6570\u636e\u8ba1\u7b97 CRC\uff0c\u7ed3\u679c\u5b58\u5165 D106-D107<\/code><\/pre>\n\n\n\n<h3 class=\"wp-block-heading\">\u5b8c\u6574\u81ea\u7531\u53e3 Modbus RTU \u4e3b\u7ad9\u793a\u4f8b<\/h3>\n\n\n\n<pre class=\"wp-block-code\"><code>\/\/ \u6c47\u5ddd H3U \u81ea\u7531\u53e3\u901a\u4fe1\u5b9e\u73b0 Modbus RTU \u4e3b\u7ad9\n\/\/ \u76ee\u6807\uff1a\u8bfb\u53d6\u4ece\u7ad9\u5730\u5740 1 \u7684\u4fdd\u6301\u5bc4\u5b58\u5668 40001\uff082 \u4e2a\u5b57\uff09\n\n\/\/ \u7f51\u7edc 1\uff1a\u6784\u5efa Modbus \u8bfb\u4fdd\u6301\u5bc4\u5b58\u5668\u62a5\u6587\n\/\/ \u62a5\u6587\u683c\u5f0f\uff1a&#91;\u4ece\u7ad9\u5730\u5740]&#91;\u529f\u80fd\u7801]&#91;\u8d77\u59cb\u5730\u5740\u9ad8]&#91;\u8d77\u59cb\u5730\u5740\u4f4e]&#91;\u5b57\u6570\u9ad8]&#91;\u5b57\u6570\u4f4e]&#91;CRC\u4f4e]&#91;CRC\u9ad8]\n\/\/\n\/\/ \u53d1\u9001\u62a5\u6587\u6570\u636e\u51c6\u5907\uff1a\n\/\/ D100 = H0103    \/\/ \u4ece\u7ad9\u5730\u5740 01 + \u529f\u80fd\u7801 03\n\/\/ D101 = H0000    \/\/ \u8d77\u59cb\u5730\u5740 0000\uff08\u5bf9\u5e94 40001\uff09\n\/\/ D102 = H0002    \/\/ \u8bfb\u53d6 2 \u4e2a\u5b57\n\/\/ CRC \u6821\u9a8c\u653e\u5165 D103\n\n\/\/ \u7f51\u7edc 2\uff1a\u914d\u7f6e\u4e32\u53e3\u53c2\u6570\uff08\u901a\u8fc7\u7279\u6b8a\u5bc4\u5b58\u5668\uff09\n\/\/ D8120 = H0C81   \/\/ 8\u4f4d\u6570\u636e+\u5076\u6821\u9a8c+1\u505c\u6b62\u4f4d+9600bps\n\/\/ M8161 = ON      \/\/ 8\u4f4d\u6570\u636e\u5904\u7406\u6a21\u5f0f\n\n\/\/ \u7f51\u7edc 3\uff1a\u53d1\u9001\u6570\u636e\n\u250c\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2510\n\u2502 M0               &#91; RS     ]\u2502\n\u2502\u2500\u2500\u2524\u251c\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2524D100      \u2502  \/\/ \u53d1\u9001\u8d77\u59cb\u5bc4\u5b58\u5668\n\u2502                  \u2502K8        \u2502  \/\/ \u53d1\u9001 8 \u4e2a\u5b57\u8282\uff08\u542b CRC\uff09\n\u2502                  \u2502D200      \u2502  \/\/ \u63a5\u6536\u8d77\u59cb\u5bc4\u5b58\u5668\n\u2502                  \u2502K9        \u2502  \/\/ \u63a5\u6536 9 \u4e2a\u5b57\u8282\uff08\u542b CRC\uff09\n\u2514\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2518\n\n\/\/ \u7f51\u7edc 4\uff1a\u63a5\u6536\u6570\u636e\u5904\u7406\n\/\/ D200 = \u4ece\u7ad9\u5730\u5740\uff08\u5e94\u4e3a H01\uff09\n\/\/ D201 = \u529f\u80fd\u7801\uff08\u5e94\u4e3a H03\uff09\n\/\/ D202 = \u5b57\u8282\u6570\uff08\u5e94\u4e3a 04\uff09\n\/\/ D203 = \u7b2c\u4e00\u5b57\u9ad8\u5b57\u8282\n\/\/ D204 = \u7b2c\u4e00\u5b57\u4f4e\u5b57\u8282\n\/\/ D205 = \u7b2c\u4e8c\u5b57\u9ad8\u5b57\u8282\n\/\/ D206 = \u7b2c\u4e8c\u5b57\u4f4e\u5b57\u8282\n\/\/ D207 = CRC \u4f4e\u5b57\u8282\n\/\/ D208 = CRC \u9ad8\u5b57\u8282<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u6c47\u5ddd AM600 \u7cfb\u5217\uff08Codesys \u5e73\u53f0\uff09\u5219\u63d0\u4f9b\u4e86\u66f4\u73b0\u4ee3\u5316\u7684 Modbus \u901a\u4fe1\u65b9\u5f0f\uff0c\u901a\u8fc7\u4e13\u7528\u529f\u80fd\u5757\u5b9e\u73b0\uff0c\u4e0e\u897f\u95e8\u5b50\u65b9\u6848\u66f4\u4e3a\u63a5\u8fd1\u3002\u5173\u4e8e\u6c47\u5ddd\u5168\u7cfb\u5217 PLC \u7684 Modbus \u7f16\u7a0b\u5bf9\u6bd4\uff0c\u8bf7\u53c2\u8003 <a href=\"https:\/\/www.modbus.cn\/en\/\" rel=\"noopener noreferrer nofollow\">modbus.cn<\/a> \u4e0a\u7684<a href=\"https:\/\/www.modbus.cn\/en\/inovance-modbus-programming\/\" rel=\"noopener noreferrer nofollow\">\u6c47\u5ddd Modbus \u7f16\u7a0b\u5168\u7cfb\u5217\u6307\u5bfc<\/a>\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u5404\u54c1\u724c\u5730\u5740\u6620\u5c04\u5173\u7cfb\u5bf9\u7167\u8868<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Modbus \u901a\u4fe1\u4e2d\u6700\u5bb9\u6613\u51fa\u9519\u7684\u73af\u8282\u4e4b\u4e00\u5c31\u662f\u5730\u5740\u6620\u5c04\u3002\u4e0d\u540c\u54c1\u724c\u7684 PLC \u5bf9 Modbus \u5730\u5740\u7684\u8868\u793a\u65b9\u5f0f\u5404\u4e0d\u76f8\u540c\uff0c\u800c\u4e14\u5728\u7f16\u7a0b\u65f6\u5730\u5740\u504f\u79fb\u89c4\u5219\u4e5f\u6709\u5dee\u5f02\u3002\u4e0b\u8868\u6574\u7406\u4e86\u56db\u5927\u54c1\u724c PLC \u7684 Modbus \u5730\u5740\u6620\u5c04\u5173\u7cfb\uff0c\u8986\u76d6\u8d85\u8fc7 2000 \u6761\u5730\u5740\u6620\u5c04\u89c4\u5219\u7684\u6838\u5fc3\u903b\u8f91\u3002<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table><thead><tr><th>Modbus \u5730\u5740\u533a<\/th><th>\u534f\u8bae\u5730\u5740<\/th><th>\u897f\u95e8\u5b50<\/th><th>\u4e09\u83f1 FX5U<\/th><th>\u53f0\u8fbe DVP<\/th><th>\u6c47\u5ddd H3U<\/th><\/tr><\/thead><tbody><tr><td>\u7ebf\u5708 00001-09999<\/td><td>0-9998<\/td><td>Q0.0-Qx.y<\/td><td>M0-Mx<\/td><td>M0-Mx<\/td><td>M0-Mx<\/td><\/tr><tr><td>\u79bb\u6563\u8f93\u5165 10001-19999<\/td><td>0-9998<\/td><td>I0.0-Ix.y<\/td><td>X0-Xx<\/td><td>X0-Xx<\/td><td>X0-Xx<\/td><\/tr><tr><td>\u8f93\u5165\u5bc4\u5b58\u5668 30001-39999<\/td><td>0-9998<\/td><td>IW0-IWx<\/td><td>SD \u7279\u6b8a\u5bc4\u5b58\u5668<\/td><td>\u2014<\/td><td>\u2014<\/td><\/tr><tr><td>\u4fdd\u6301\u5bc4\u5b58\u5668 40001-49999<\/td><td>0-9998<\/td><td>DBx.DBW0+<\/td><td>D0-D7999<\/td><td>D0-D9999<\/td><td>D0-D7999<\/td><\/tr><tr><td>\u4fdd\u6301\u5bc4\u5b58\u5668 400001-465535<\/td><td>0-65534<\/td><td>\u9700\u6269\u5c55\u5bfb\u5740<\/td><td>D0-D7999 \/ R0+<\/td><td>D0-D9999 \/ \u6269\u5c55<\/td><td>D0-D7999 \/ \u6269\u5c55<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\">\u5730\u5740\u504f\u79fb\u89c4\u5219\u8be6\u89e3<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u7406\u89e3\u5730\u5740\u504f\u79fb\u662f\u907f\u514d Modbus \u901a\u4fe1\u9519\u8bef\u7684\u57fa\u77f3\u3002Modbus \u534f\u8bae\u5b9a\u4e49\u7684\u5730\u5740\u4ece 0 \u5f00\u59cb\u7f16\u53f7\uff0c\u4f46\u5e94\u7528\u5c42\u7f16\u53f7\uff08\u5982 40001\uff09\u4ece 1 \u5f00\u59cb\u3002\u4e0d\u540c\u54c1\u724c\u7684 PLC \u5728\u6307\u4ee4\u4e2d\u4f7f\u7528\u7684\u5730\u5740\u901a\u5e38\u662f\u534f\u8bae\u5730\u5740\uff080-based\uff09\uff0c\u8fd9\u5bfc\u81f4\u4e86\u4e00\u4e2a\u5e38\u89c1\u7684&#8221;\u5dee 1&#8243;\u9519\u8bef\u3002<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table><thead><tr><th>\u573a\u666f<\/th><th>\u6587\u6863\u5730\u5740<\/th><th>\u534f\u8bae\u5730\u5740\uff08\u6307\u4ee4\u4e2d\u7528\uff09<\/th><th>\u504f\u79fb\u91cf<\/th><\/tr><\/thead><tbody><tr><td>\u8bfb\u4fdd\u6301\u5bc4\u5b58\u5668 40001<\/td><td>40001<\/td><td>0x0000\uff08H0\/K0\uff09<\/td><td>-1<\/td><\/tr><tr><td>\u8bfb\u4fdd\u6301\u5bc4\u5b58\u5668 40100<\/td><td>40100<\/td><td>0x0063\uff08H63\/K99\uff09<\/td><td>-1<\/td><\/tr><tr><td>\u8bfb\u7ebf\u5708 00001<\/td><td>00001<\/td><td>0x0000\uff08H0\/K0\uff09<\/td><td>-1<\/td><\/tr><tr><td>\u5199\u5355\u5bc4\u5b58\u5668 40010<\/td><td>40010<\/td><td>0x0009\uff08H9\/K9\uff09<\/td><td>-1<\/td><\/tr><tr><td>\u8bfb\u8f93\u5165\u5bc4\u5b58\u5668 30050<\/td><td>30050<\/td><td>0x0031\uff08H31\/K49\uff09<\/td><td>-1<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">\u5e38\u89c1\u9519\u8bef\u4e0e\u9677\u9631<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u5728\u5b9e\u9645\u5de5\u7a0b\u4e2d\uff0cModbus \u901a\u4fe1\u7684\u8c03\u8bd5\u5f80\u5f80\u5360\u636e\u4e86\u5927\u91cf\u5f00\u53d1\u65f6\u95f4\u3002\u4ee5\u4e0b\u662f\u4f5c\u8005\u6574\u7406\u4e86\u6570\u767e\u4e2a\u5b9e\u9645\u9879\u76ee\u4e2d\u6700\u5e38\u89c1\u7684\u9519\u8bef\u548c\u9677\u9631\uff0c\u5e2e\u52a9\u8bfb\u8005\u5c11\u8d70\u5f2f\u8def\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">1. \u5730\u5740\u504f\u79fb\u9519\u8bef<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u8fd9\u662f\u6700\u5e38\u89c1\u7684\u9519\u8bef\u6ca1\u6709\u4e4b\u4e00\u3002\u8bbe\u5907\u624b\u518c\u4e0a\u5199\u7684\u5bc4\u5b58\u5668\u5730\u5740\u662f&#8221;40001&#8243;\uff0c\u5de5\u7a0b\u5e08\u5728 PLC \u6307\u4ee4\u4e2d\u5c06\u8d77\u59cb\u5730\u5740\u586b\u5199\u4e3a&#8221;1&#8243;\u6216&#8221;40001&#8243;\u90fd\u662f\u9519\u8bef\u7684\u3002\u6b63\u786e\u505a\u6cd5\u662f\u586b\u5165&#8221;0&#8243;\uff08\u534f\u8bae\u5730\u5740 = \u5e94\u7528\u5730\u5740 &#8211; 1\uff09\u3002\u897f\u95e8\u5b50 MB_MASTER \u7684 DATA_ADDR \u53c2\u6570\u586b\u5165 40001 \u662f\u6b63\u786e\u7684\uff08\u897f\u95e8\u5b50\u505a\u4e86\u5c01\u88c5\uff09\uff0c\u4f46\u4e09\u83f1 ADPRW \u7684 S3 \u53c2\u6570\u5e94\u586b\u5165 H0\uff0c\u53f0\u8fbe MODRW \u7684 S2 \u53c2\u6570\u5e94\u586b\u5165 K0\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">2. \u5b57\u8282\u5e8f\uff08Endianness\uff09\u95ee\u9898<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u5f53 Modbus \u4f20\u8f93 32 \u4f4d\u6570\u636e\uff08\u5982\u6d6e\u70b9\u6570\u3001\u53cc\u5b57\u6574\u6570\uff09\u65f6\uff0c\u5b57\u8282\u5e8f\u95ee\u9898\u4f1a\u5bfc\u81f4\u6570\u636e\u89e3\u6790\u9519\u8bef\u3002\u5e38\u89c1\u7684\u5b57\u8282\u5e8f\u7ec4\u5408\u6709\u56db\u79cd\uff1aBig-Endian \u5b57\u8282\u5e8f + Big-Endian \u5b57\u5e8f\uff08\u6807\u51c6 Modbus\uff09\u3001Big-Endian \u5b57\u8282\u5e8f + Little-Endian \u5b57\u5e8f\u3001Little-Endian \u5b57\u8282\u5e8f + Big-Endian \u5b57\u5e8f\uff0c\u4ee5\u53ca Little-Endian \u5b57\u8282\u5e8f + Little-Endian \u5b57\u5e8f\u3002\u897f\u95e8\u5b50 PLC \u91c7\u7528 Big-Endian\uff0c\u4e09\u83f1\u548c\u53f0\u8fbe\u91c7\u7528 Little-Endian\uff0c\u8de8\u54c1\u724c\u901a\u4fe1\u65f6\u5fc5\u987b\u6ce8\u610f\u5b57\u8282\u5e8f\u8f6c\u6362\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">3. \u8d85\u65f6\u8bbe\u7f6e\u4e0d\u5f53<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Modbus RTU \u7684\u5e27\u95f4\u95f4\u9694\u6807\u51c6\u4e3a 3.5 \u4e2a\u5b57\u7b26\u65f6\u95f4\uff08\u5728 9600 bps \u4e0b\u7ea6 3.6ms\uff09\u3002\u5982\u679c\u4e3b\u7ad9\u7684\u8d85\u65f6\u8bbe\u7f6e\u8fc7\u77ed\uff0c\u4f1a\u56e0\u4e3a\u6b63\u5e38\u5e27\u95f4\u95f4\u9694\u800c\u8bef\u5224\u8d85\u65f6\uff1b\u5982\u679c\u8fc7\u957f\uff0c\u5219\u5728\u8bbe\u5907\u6389\u7ebf\u65f6\u4f1a\u6d6a\u8d39\u5927\u91cf\u626b\u63cf\u65f6\u95f4\u3002\u5efa\u8bae\u5c06\u54cd\u5e94\u8d85\u65f6\u8bbe\u7f6e\u4e3a\u300c\uff08\u6700\u5927\u54cd\u5e94\u5b57\u7b26\u6570 \u00d7 \u5b57\u7b26\u65f6\u95f4\uff09+ \u8bbe\u5907\u5904\u7406\u65f6\u95f4 + \u4f59\u91cf\u300d\uff0c\u4f8b\u5982 9600 bps \u4e0b\u8bfb\u53d6 10 \u4e2a\u5bc4\u5b58\u5668\uff0c\u5408\u7406\u7684\u8d85\u65f6\u8bbe\u7f6e\u4e3a 200-500ms\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">4. \u591a\u4e3b\u7ad9\u51b2\u7a81<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Modbus RTU \u662f\u5355\u4e3b\u7ad9\u534f\u8bae\uff0c\u540c\u4e00\u603b\u7ebf\u4e0a\u4e0d\u5141\u8bb8\u5b58\u5728\u591a\u4e2a\u4e3b\u7ad9\u3002\u5f53 HMI \u89e6\u6478\u5c4f\u548c PLC \u540c\u65f6\u4f5c\u4e3a\u4e3b\u7ad9\u8bbf\u95ee\u540c\u4e00\u8bbe\u5907\u65f6\uff0c\u4f1a\u4ea7\u751f\u603b\u7ebf\u51b2\u7a81\u3002\u89e3\u51b3\u65b9\u6848\u662f\u8ba9 HMI \u901a\u8fc7 PLC \u7684\u900f\u660e\u4f20\u8f93\u529f\u80fd\u95f4\u63a5\u8bbf\u95ee\u8bbe\u5907\uff0c\u6216\u8005\u4f7f\u7528 Modbus TCP \u7f51\u5173\u8fdb\u884c\u534f\u8bae\u8f6c\u6362\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">5. \u901a\u4fe1\u53c2\u6570\u4e0d\u4e00\u81f4<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u6ce2\u7279\u7387\u3001\u6570\u636e\u4f4d\u3001\u505c\u6b62\u4f4d\u3001\u6821\u9a8c\u4f4d\u5fc5\u987b\u4e0e\u4ece\u7ad9\u5b8c\u5168\u4e00\u81f4\u3002\u6ce8\u610f\uff1a\u67d0\u4e9b\u8bbe\u5907\u58f0\u79f0\u652f\u6301&#8221;9600,8,N,1&#8243;\uff0c\u4f46\u5b9e\u9645\u6570\u636e\u4f4d\u4e3a 9 \u4f4d\uff088 \u6570\u636e\u4f4d + 1 \u6821\u9a8c\u4f4d\uff09\uff0c\u901a\u4fe1\u65f6\u4f1a\u56e0\u4e3a\u5b57\u8282\u957f\u5ea6\u4e0d\u5339\u914d\u800c\u5931\u8d25\u3002\u5efa\u8bae\u4f7f\u7528 Modbus \u8c03\u8bd5\u5de5\u5177\u786e\u8ba4\u8bbe\u5907\u7684\u5b9e\u9645\u901a\u4fe1\u53c2\u6570\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u4e0e SCADA \u7cfb\u7edf\u7684\u96c6\u6210<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">PLC \u901a\u8fc7 Modbus \u534f\u8bae\u4e0e SCADA\uff08\u76d1\u63a7\u4e0e\u6570\u636e\u91c7\u96c6\uff09\u7cfb\u7edf\u96c6\u6210\u662f\u5de5\u4e1a\u81ea\u52a8\u5316\u4e2d\u6700\u5e38\u89c1\u7684\u67b6\u6784\u4e4b\u4e00\u3002\u4ee5\u4e0b\u4ecb\u7ecd\u51e0\u79cd\u5178\u578b\u7684\u96c6\u6210\u65b9\u5f0f\u548c\u6700\u4f73\u5b9e\u8df5\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u5178\u578b\u96c6\u6210\u67b6\u6784<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\u76f4\u8fde\u6a21\u5f0f<\/strong>\uff1aSCADA \u901a\u8fc7 Modbus RTU\/TCP \u9a71\u52a8\u76f4\u63a5\u8fde\u63a5 PLC\u3002\u9002\u7528\u4e8e\u5c0f\u578b\u7cfb\u7edf\uff081-5 \u53f0 PLC\uff09\uff0c\u4f18\u70b9\u662f\u67b6\u6784\u7b80\u5355\u3001\u5ef6\u8fdf\u4f4e\uff1b\u7f3a\u70b9\u662f\u6269\u5c55\u6027\u5dee\u3001SCADA \u8d1f\u62c5\u91cd\u3002<\/li>\n\n\n\n<li><strong>OPC \u670d\u52a1\u5668\u4e2d\u8f6c\u6a21\u5f0f<\/strong>\uff1aPLC \u2192 OPC Server\uff08\u5982 Kepware\u3001Matrikon\uff09\u2192 SCADA\u3002\u9002\u7528\u4e8e\u4e2d\u5927\u578b\u7cfb\u7edf\uff0c\u4f18\u70b9\u662f\u534f\u8bae\u89e3\u8026\u3001\u591a\u5ba2\u6237\u7aef\u652f\u6301\uff1b\u7f3a\u70b9\u662f\u589e\u52a0\u4e86\u4e2d\u95f4\u5c42\u548c\u7ef4\u62a4\u6210\u672c\u3002<\/li>\n\n\n\n<li><strong>\u6570\u636e\u7f51\u5173\u6a21\u5f0f<\/strong>\uff1aPLC \u2192 Modbus \u6570\u636e\u7f51\u5173 \u2192 SCADA\/MES\/ERP\u3002\u9002\u7528\u4e8e\u4f01\u4e1a\u7ea7\u7cfb\u7edf\uff0c\u4f18\u70b9\u662f\u7edf\u4e00\u6570\u636e\u51fa\u53e3\u3001\u652f\u6301\u6570\u636e\u7f13\u5b58\u548c\u8f6c\u53d1\u3002<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">SCADA \u7ec4\u6001\u8981\u70b9<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u5728 SCADA \u4e2d\u914d\u7f6e Modbus \u9a71\u52a8\u65f6\uff0c\u6700\u5173\u952e\u7684\u662f\u6b63\u786e\u8bbe\u7f6e\u5bc4\u5b58\u5668\u5730\u5740\u6620\u5c04\u3002\u5e38\u89c1\u7684 SCADA \u5e73\u53f0\uff08\u5982 WinCC\u3001\u7ec4\u6001\u738b\u3001\u529b\u63a7\u3001Intouch\uff09\u5bf9 Modbus \u5730\u5740\u7684\u8868\u793a\u65b9\u5f0f\u5404\u4e0d\u76f8\u540c\u3002\u4f8b\u5982\uff0cWinCC \u4f7f\u7528 &#8220;4&#215;0001&#8221; \u8868\u793a\u4fdd\u6301\u5bc4\u5b58\u5668\uff0c\u800c\u7ec4\u6001\u738b\u4f7f\u7528 &#8220;4-1&#8221; \u7684\u683c\u5f0f\u3002\u5fc5\u987b\u67e5\u9605\u5404\u5e73\u53f0\u7684 Modbus \u9a71\u52a8\u6587\u6863\uff0c\u786e\u8ba4\u5730\u5740\u683c\u5f0f\u540e\u518d\u8fdb\u884c\u914d\u7f6e\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u8c03\u8bd5\u6280\u5de7\u4e0e\u5de5\u5177\u63a8\u8350<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u9ad8\u6548\u7684\u8c03\u8bd5\u662f Modbus \u901a\u4fe1\u5f00\u53d1\u6210\u529f\u7684\u5173\u952e\u3002\u4ee5\u4e0b\u662f\u4f5c\u8005\u63a8\u8350\u7684\u5de5\u5177\u548c\u65b9\u6cd5\u8bba\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u5fc5\u5907\u8c03\u8bd5\u5de5\u5177<\/h3>\n\n\n\n<figure class=\"wp-block-table\"><table><thead><tr><th>\u5de5\u5177\u540d\u79f0<\/th><th>\u7c7b\u578b<\/th><th>\u9002\u7528\u573a\u666f<\/th><th>\u63a8\u8350\u7406\u7531<\/th><\/tr><\/thead><tbody><tr><td>Modbus Poll<\/td><td>\u684c\u9762\u8f6f\u4ef6<\/td><td>\u4e3b\u7ad9\u6a21\u62df<\/td><td>\u754c\u9762\u76f4\u89c2\uff0c\u652f\u6301\u6240\u6709\u529f\u80fd\u7801\uff0c\u53ef\u5b9a\u65f6\u8f6e\u8be2<\/td><\/tr><tr><td>Modbus Slave<\/td><td>\u684c\u9762\u8f6f\u4ef6<\/td><td>\u4ece\u7ad9\u6a21\u62df<\/td><td>\u53ef\u4e0e Poll \u914d\u5bf9\u4f7f\u7528\uff0c\u4eff\u771f\u4ece\u7ad9\u884c\u4e3a<\/td><\/tr><tr><td>QModMaster<\/td><td>\u5f00\u6e90\u8f6f\u4ef6<\/td><td>\u4e3b\u7ad9\u8c03\u8bd5<\/td><td>\u514d\u8d39\u5f00\u6e90\uff0c\u652f\u6301 RTU\/TCP\uff0c\u8de8\u5e73\u53f0<\/td><\/tr><tr><td>ModScan<\/td><td>\u684c\u9762\u8f6f\u4ef6<\/td><td>\u4e3b\u7ad9\u626b\u63cf<\/td><td>\u6279\u91cf\u626b\u63cf\u4ece\u7ad9\u5bc4\u5b58\u5668\uff0c\u5feb\u901f\u5efa\u7acb\u5730\u5740\u6620\u5c04\u8868<\/td><\/tr><tr><td>\u4e32\u53e3\u76d1\u63a7\u5de5\u5177<\/td><td>\u786c\u4ef6\/\u8f6f\u4ef6<\/td><td>\u603b\u7ebf\u76d1\u542c<\/td><td>USB \u8f6c 485 \u7684\u76d1\u542c\u6a21\u5f0f\uff0c\u8bb0\u5f55\u539f\u59cb\u62a5\u6587<\/td><\/tr><tr><td>Wireshark<\/td><td>\u7f51\u7edc\u6293\u5305<\/td><td>Modbus TCP \u5206\u6790<\/td><td>\u652f\u6301 Modbus TCP \u534f\u8bae\u89e3\u6790\uff0c\u529f\u80fd\u5f3a\u5927<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\">\u8c03\u8bd5\u65b9\u6cd5\u8bba<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\u5206\u5c42\u9a8c\u8bc1\u6cd5<\/strong>\uff1a\u5148\u7528\u7535\u8868\u786e\u8ba4\u7269\u7406\u5c42\uff08\u7ebf\u7f06\u3001\u7ec8\u7aef\u7535\u963b\u3001\u504f\u7f6e\u7535\u963b\uff09\uff0c\u518d\u7528 Modbus Poll \u786e\u8ba4\u94fe\u8def\u5c42\uff08\u6ce2\u7279\u7387\u3001\u6821\u9a8c\uff09\uff0c\u6700\u540e\u7528 PLC \u7a0b\u5e8f\u786e\u8ba4\u5e94\u7528\u5c42\uff08\u5730\u5740\u3001\u6570\u636e\u683c\u5f0f\uff09\u3002<\/li>\n\n\n\n<li><strong>\u6700\u5c0f\u5316\u6d4b\u8bd5<\/strong>\uff1a\u5148\u7528\u6700\u7b80\u5355\u7684\u529f\u80fd\u7801\uff0803 \u8bfb\u5355\u5bc4\u5b58\u5668\uff09\u8fdb\u884c\u901a\u4fe1\u6d4b\u8bd5\uff0c\u786e\u8ba4\u57fa\u672c\u94fe\u8def\u6b63\u5e38\u540e\u518d\u6d4b\u8bd5\u590d\u6742\u529f\u80fd\u3002<\/li>\n\n\n\n<li><strong>\u62a5\u6587\u8bb0\u5f55\u6cd5<\/strong>\uff1a\u4f7f\u7528\u4e32\u53e3\u76d1\u63a7\u5de5\u5177\u8bb0\u5f55\u5b8c\u6574\u62a5\u6587\uff0c\u901a\u8fc7\u4eba\u5de5\u5206\u6790\u62a5\u6587\u5e27\u5b9a\u4f4d\u95ee\u9898\u3002Modbus \u62a5\u6587\u7ed3\u6784\u7b80\u5355\uff0c\u901a\u5e38\u4e00\u773c\u5c31\u80fd\u8bc6\u522b\u95ee\u9898\u6240\u5728\u3002<\/li>\n\n\n\n<li><strong>\u8d85\u65f6\u9012\u8fdb\u6cd5<\/strong>\uff1a\u4ece\u8f83\u957f\u7684\u8d85\u65f6\uff08\u5982 3000ms\uff09\u5f00\u59cb\u8c03\u8bd5\uff0c\u786e\u8ba4\u901a\u4fe1\u6b63\u5e38\u540e\u9010\u6b65\u7f29\u77ed\u8d85\u65f6\uff0c\u627e\u5230\u6700\u4f73\u503c\u3002<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">\u56db\u5927\u54c1\u724c Modbus \u7f16\u7a0b\u5168\u9762\u5bf9\u6bd4<\/h2>\n\n\n\n<figure class=\"wp-block-table\"><table><thead><tr><th>\u5bf9\u6bd4\u7ef4\u5ea6<\/th><th>\u897f\u95e8\u5b50 S7-1200\/1500<\/th><th>\u4e09\u83f1 FX5U<\/th><th>\u53f0\u8fbe AS \u7cfb\u5217<\/th><th>\u6c47\u5ddd H3U<\/th><\/tr><\/thead><tbody><tr><td>\u5b9e\u73b0\u65b9\u5f0f<\/td><td>\u4e13\u7528\u6307\u4ee4\uff08\u5e93\uff09<\/td><td>\u4e13\u7528\u6307\u4ee4<\/td><td>\u4e13\u7528\u6307\u4ee4<\/td><td>\u81ea\u7531\u53e3\u7f16\u7a0b<\/td><\/tr><tr><td>\u6838\u5fc3\u6307\u4ee4<\/td><td>MB_COMM_LOAD\/MB_MASTER\/MB_SLAVE<\/td><td>ADPRW<\/td><td>MODRW\/M_MODRW<\/td><td>RS+CRC<\/td><\/tr><tr><td>\u7f16\u7a0b\u96be\u5ea6<\/td><td>\u2605\u2605\u2606\u2606\u2606<\/td><td>\u2605\u2605\u2606\u2606\u2606<\/td><td>\u2605\u2605\u2606\u2606\u2606<\/td><td>\u2605\u2605\u2605\u2605\u2606<\/td><\/tr><tr><td>\u529f\u80fd\u7801\u652f\u6301<\/td><td>01\/02\/03\/04\/05\/06\/15\/16<\/td><td>01\/02\/03\/04\/05\/06\/15\/16<\/td><td>01\/02\/03\/04\/05\/06\/15\/16<\/td><td>\u5168\u90e8(\u624b\u52a8)<\/td><\/tr><tr><td>\u6700\u591a\u4ece\u7ad9\u6570<\/td><td>247<\/td><td>247<\/td><td>254<\/td><td>247(\u53d7\u626b\u63cf\u5468\u671f\u9650\u5236)<\/td><\/tr><tr><td>\u5355\u6b21\u6700\u591a\u6570\u636e\u91cf<\/td><td>125 \u5b57(\u8bfb)\/123 \u5b57(\u5199)<\/td><td>125 \u5b57(\u8bfb)\/123 \u5b57(\u5199)<\/td><td>127 \u5b57(\u8bfb)\/123 \u5b57(\u5199)<\/td><td>\u65e0\u9650\u5236(\u624b\u52a8)<\/td><\/tr><tr><td>\u5730\u5740\u5bb9\u9519<\/td><td>\u81ea\u52a8\u5904\u7406\u504f\u79fb<\/td><td>\u9700\u624b\u52a8\u504f\u79fb(-1)<\/td><td>\u9700\u624b\u52a8\u504f\u79fb(-1)<\/td><td>\u9700\u624b\u52a8\u504f\u79fb(-1)<\/td><\/tr><tr><td>\u591a\u6307\u4ee4\u5e76\u884c<\/td><td>\u4e0d\u652f\u6301(\u9700\u6392\u961f)<\/td><td>\u4e0d\u652f\u6301(\u9700\u6392\u961f)<\/td><td>\u652f\u6301(\u6700\u591a8\u6761)<\/td><td>\u624b\u52a8\u7ba1\u7406<\/td><\/tr><tr><td>\u9519\u8bef\u8bca\u65ad<\/td><td>STATUS \u8be6\u7ec6\u72b6\u6001\u7801<\/td><td>SM\/SD \u5bc4\u5b58\u5668<\/td><td>\u9519\u8bef\u6807\u5fd7\u4f4d<\/td><td>\u624b\u52a8\u5224\u65ad<\/td><\/tr><tr><td>TCP \u652f\u6301<\/td><td>MB_CLIENT\/MB_SERVER<\/td><td>\u5185\u7f6e\u4ee5\u592a\u7f51\u53e3<\/td><td>\u5185\u7f6e\u4ee5\u592a\u7f51\u53e3<\/td><td>\u9700\u6269\u5c55\u6a21\u5757<\/td><\/tr><tr><td>\u6d6e\u70b9\u6570\u652f\u6301<\/td><td>\u9700\u5b57\u8282\u5e8f\u8f6c\u6362<\/td><td>\u9700\u5b57\u8282\u5e8f\u8f6c\u6362<\/td><td>\u9700\u5b57\u8282\u5e8f\u8f6c\u6362<\/td><td>\u9700\u5b57\u8282\u5e8f\u8f6c\u6362<\/td><\/tr><tr><td>\u5f00\u53d1\u73af\u5883<\/td><td>TIA Portal<\/td><td>GX Works3<\/td><td>ISPSoft\/DIAStudio<\/td><td>AutoShop<\/td><\/tr><tr><td>\u5b66\u4e60\u8d44\u6e90<\/td><td>\u4e30\u5bcc<\/td><td>\u8f83\u4e30\u5bcc<\/td><td>\u4e2d\u7b49<\/td><td>\u8f83\u5c11<\/td><\/tr><tr><td>\u5178\u578b\u901a\u4fe1\u901f\u7387<\/td><td>19200-115200<\/td><td>9600-115200<\/td><td>9600-115200<\/td><td>9600-19200<\/td><\/tr><tr><td>\u9002\u5408\u573a\u666f<\/td><td>\u5927\u578b\u7cfb\u7edf\/\u6807\u51c6\u5316\u9879\u76ee<\/td><td>\u4e2d\u5c0f\u578b\u8bbe\u5907\/\u5feb\u901f\u5f00\u53d1<\/td><td>\u56fd\u4ea7\u66ff\u4ee3\/\u6027\u4ef7\u6bd4\u4f18\u5148<\/td><td>\u5b9a\u5236\u5316\u9700\u6c42\/\u6df1\u5ea6\u63a7\u5236<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">FAQ \u5e38\u89c1\u95ee\u9898<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">Q1\uff1a\u897f\u95e8\u5b50 S7-1200 \u7684 Modbus \u901a\u4fe1\u9700\u8981\u989d\u5916\u7684\u786c\u4ef6\u6a21\u5757\u5417\uff1f<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u662f\u7684\u3002S7-1200 CPU \u672c\u4f53\u901a\u5e38\u53ea\u6709\u4ee5\u592a\u7f51\u53e3\u548c\u666e\u901a\u7684 RS-232\/RS-485\uff08\u90e8\u5206\u578b\u53f7\uff09\uff0c\u9700\u8981\u8fdb\u884c Modbus RTU \u901a\u4fe1\u65f6\uff0c\u63a8\u8350\u4f7f\u7528 CM1241 RS485 \u901a\u4fe1\u6a21\u5757\uff08\u786c\u4ef6\u6807\u8bc6\u53f7 269\uff09\u6216 CB1241 \u4fe1\u53f7\u677f\u3002\u5bf9\u4e8e Modbus TCP \u901a\u4fe1\uff0cCPU \u81ea\u5e26\u7684\u4ee5\u592a\u7f51\u53e3\u5373\u53ef\u652f\u6301\uff0c\u65e0\u9700\u989d\u5916\u786c\u4ef6\u3002S7-1500 \u7c7b\u4f3c\uff0c\u4f7f\u7528 CM PtP \u901a\u4fe1\u6a21\u5757\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Q2\uff1a\u4e09\u83f1 FX5U \u7684 ADPRW \u6307\u4ee4\u4e00\u6b21\u53ef\u4ee5\u8bfb\u5199\u591a\u5c11\u4e2a\u8bbe\u5907\uff1f<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">ADPRW \u6307\u4ee4\u6bcf\u6b21\u53ea\u80fd\u4e0e\u4e00\u4e2a\u4ece\u7ad9\u8bbe\u5907\u8fdb\u884c\u901a\u4fe1\u3002\u5982\u679c\u9700\u8981\u8f6e\u8be2\u591a\u4e2a\u4ece\u7ad9\uff0c\u9700\u8981\u5728\u7a0b\u5e8f\u4e2d\u4f7f\u7528\u591a\u7ec4 ADPRW \u6307\u4ee4\uff0c\u5e76\u786e\u4fdd\u540c\u4e00\u65f6\u95f4\u53ea\u6709\u4e00\u6761\u6307\u4ee4\u5728\u6fc0\u6d3b\u72b6\u6001\u3002\u53ef\u4ee5\u901a\u8fc7\u4e0a\u4e00\u4e2a\u6307\u4ee4\u7684\u5b8c\u6210\u6807\u5fd7\u6765\u89e6\u53d1\u4e0b\u4e00\u4e2a\u6307\u4ee4\uff0c\u5b9e\u73b0\u4e32\u884c\u8f6e\u8be2\u3002\u5178\u578b\u7684\u591a\u7ad9\u8f6e\u8be2\u5468\u671f = \u7ad9\u70b9\u6570 \u00d7 (\u8bf7\u6c42\u65f6\u95f4 + \u54cd\u5e94\u65f6\u95f4 + \u5e27\u95f4\u95f4\u9694)\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Q3\uff1a\u53f0\u8fbe MODRW \u6307\u4ee4\u901a\u4fe1\u5931\u8d25\u5982\u4f55\u6392\u9519\uff1f<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u9996\u5148\u68c0\u67e5\u901a\u4fe1\u53c2\u6570\u662f\u5426\u4e00\u81f4\uff08\u6ce2\u7279\u7387\u3001\u6821\u9a8c\u4f4d\u3001\u6570\u636e\u4f4d\u3001\u505c\u6b62\u4f4d\uff09\u3002\u7136\u540e\u786e\u8ba4 RS-485 \u7684 A\/B \u7ebf\u662f\u5426\u63a5\u53cd\u2014\u2014\u8fd9\u662f\u6700\u5e38\u89c1\u7684\u786c\u4ef6\u95ee\u9898\u3002\u4f7f\u7528\u53f0\u8fbe PLC \u5185\u7f6e\u7684\u7279\u6b8a\u5bc4\u5b58\u5668\u53ef\u4ee5\u67e5\u770b\u901a\u4fe1\u9519\u8bef\u7801\u3002\u6700\u540e\uff0c\u786e\u4fdd MODRW \u6307\u4ee4\u7684\u76ee\u6807\u5730\u5740\u4e0e\u4ece\u7ad9\u5b9e\u9645\u5730\u5740\u5339\u914d\u3002\u53f0\u8fbe PLC \u7684 COM2 \u7aef\u53e3\u9ed8\u8ba4\u662f Modbus \u4ece\u7ad9\u6a21\u5f0f\uff0c\u5982\u9700\u4f5c\u4e3a\u4e3b\u7ad9\u4f7f\u7528\uff0c\u9700\u8981\u5728\u7a0b\u5e8f\u4e2d\u5c06 M1143 \u8bbe\u7f6e\u4e3a ON\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Q4\uff1a\u6c47\u5ddd H3U \u81ea\u7531\u53e3\u7f16\u7a0b\u5b9e\u73b0 Modbus \u7684\u53ef\u9760\u6027\u5982\u4f55\uff1f<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u6c47\u5ddd H3U \u7684\u81ea\u7531\u53e3 Modbus \u901a\u4fe1\u5728\u6ce2\u7279\u7387\u4e0d\u8d85\u8fc7 19200 bps \u65f6\u975e\u5e38\u53ef\u9760\u3002\u4e3a\u4e86\u4fdd\u8bc1\u901a\u4fe1\u7a33\u5b9a\u6027\uff0c\u5efa\u8bae\u5728\u7a0b\u5e8f\u4e2d\u52a0\u5165\u4ee5\u4e0b\u673a\u5236\uff1a\u8d85\u65f6\u91cd\u8bd5\uff08\u5efa\u8bae 3 \u6b21\uff09\u3001CRC \u6821\u9a8c\u7ed3\u679c\u9a8c\u8bc1\u3001\u63a5\u6536\u6570\u636e\u957f\u5ea6\u6821\u9a8c\u3001\u54cd\u5e94\u5730\u5740\u6821\u9a8c\uff08\u786e\u8ba4\u56de\u590d\u7684\u4ece\u7ad9\u5730\u5740\u4e0e\u8bf7\u6c42\u4e00\u81f4\uff09\uff0c\u4ee5\u53ca\u901a\u4fe1\u5931\u8d25\u540e\u7684\u9519\u8bef\u8ba1\u6570\u548c\u62a5\u8b66\u3002\u5982\u679c\u662f\u5927\u89c4\u6a21\u6279\u91cf\u9879\u76ee\uff0c\u5efa\u8bae\u4f7f\u7528\u6c47\u5ddd AM600 \u7cfb\u5217\uff08Codesys \u5e73\u53f0\uff09\uff0c\u5176 Modbus \u529f\u80fd\u5757\u66f4\u4e3a\u6210\u719f\u7a33\u5b9a\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Q5\uff1a\u5982\u4f55\u89e3\u51b3 Modbus \u901a\u4fe1\u4e2d 32 \u4f4d\u6d6e\u70b9\u6570\u7684\u5b57\u8282\u5e8f\u95ee\u9898\uff1f<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">32 \u4f4d\u6d6e\u70b9\u6570\u5728 Modbus \u4e2d\u4f7f\u7528\u4e24\u4e2a\u8fde\u7eed\u7684 16 \u4f4d\u5bc4\u5b58\u5668\u4f20\u8f93\uff0c\u5b57\u8282\u5e8f\u7531\u8bbe\u5907\u51b3\u5b9a\u3002\u897f\u95e8\u5b50\u548c\u65bd\u8010\u5fb7\u901a\u5e38\u4f7f\u7528 Big-Endian \u5b57\u5e8f\uff08\u5bc4\u5b58\u5668 N \u5b58\u9ad8 16 \u4f4d\uff0cN+1 \u5b58\u4f4e 16 \u4f4d\uff09\uff0c\u800c\u4e09\u83f1\u3001\u53f0\u8fbe\u3001\u6c47\u5ddd\u901a\u5e38\u4f7f\u7528 Little-Endian \u5b57\u5e8f\uff08\u5bc4\u5b58\u5668 N \u5b58\u4f4e 16 \u4f4d\uff0cN+1 \u5b58\u9ad8 16 \u4f4d\uff09\u3002\u89e3\u51b3\u65b9\u6cd5\u662f\u5728\u63a5\u6536\u7aef\u8fdb\u884c\u5b57\u8282\u4ea4\u6362\uff1a\u897f\u95e8\u5b50\u53ef\u4f7f\u7528 SWAP \u6307\u4ee4\uff0c\u4e09\u83f1\u53ef\u4f7f\u7528 SWAP \u6307\u4ee4\u6216\u76f4\u63a5\u8fdb\u884c\u5b57\u4ea4\u6362\uff0c\u53f0\u8fbe\u53ef\u4f7f\u7528 XCH \u6307\u4ee4\uff0c\u6c47\u5ddd\u53ef\u4f7f\u7528\u5faa\u73af\u79fb\u4f4d\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u7ed3\u8bed<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Modbus PLC \u7f16\u7a0b<\/strong>\u662f\u5de5\u4e1a\u81ea\u52a8\u5316\u5de5\u7a0b\u5e08\u7684\u6838\u5fc3\u7ade\u4e89\u529b\u4e4b\u4e00\u3002\u4ece<strong>\u897f\u95e8\u5b50 Modbus RTU<\/strong> \u7684 MB_MASTER \u6307\u4ee4\u5230<strong>\u4e09\u83f1 Modbus \u901a\u4fe1<\/strong>\u7684 ADPRW \u6307\u4ee4\uff0c\u4ece<strong>\u53f0\u8fbe PLC Modbus<\/strong> \u7684 MODRW \u6307\u4ee4\u5230<strong>\u6c47\u5ddd Modbus \u7f16\u7a0b<\/strong>\u7684\u81ea\u7531\u53e3\u5b9e\u73b0\uff0c\u4e0d\u540c\u54c1\u724c\u5404\u6709\u5176\u8bbe\u8ba1\u54f2\u5b66\u548c\u6700\u4f73\u5b9e\u8df5\u3002\u638c\u63e1\u8de8\u54c1\u724c PLC \u7684 Modbus \u901a\u4fe1\u80fd\u529b\uff0c\u4e0d\u4ec5\u80fd\u591f\u5e94\u5bf9\u5404\u79cd\u9879\u76ee\u9700\u6c42\uff0c\u66f4\u80fd\u591f\u6df1\u5165\u7406\u89e3\u5de5\u4e1a\u901a\u4fe1\u534f\u8bae\u7684\u672c\u8d28\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u672c\u6587\u4f5c\u4e3a <a href=\"https:\/\/www.modbus.cn\/en\/\" rel=\"noopener noreferrer nofollow\">modbus.cn<\/a> Modbus \u6280\u672f\u7cfb\u5217\u7684\u91cd\u8981\u7bc7\u7ae0\uff0c\u4e0e\u5e73\u53f0\u4e0a\u7684\u5176\u4ed6\u6587\u7ae0\u5f62\u6210\u4e86\u5b8c\u6574\u7684\u6280\u672f\u4f53\u7cfb\u3002\u5efa\u8bae\u8bfb\u8005\u7ed3\u5408\u4ee5\u4e0b\u51e0\u7bc7\u6587\u7ae0\u6df1\u5165\u5b66\u4e60\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><a href=\"https:\/\/www.modbus.cn\/en\/modbus-protocol-fundamentals\/\" rel=\"noopener noreferrer nofollow\">Modbus \u534f\u8bae\u57fa\u7840\u4e0e\u62a5\u6587\u7ed3\u6784\u8be6\u89e3<\/a><\/li>\n\n\n\n<li><a href=\"https:\/\/www.modbus.cn\/en\/modbus-tcp-rtu-comparison\/\" rel=\"noopener noreferrer nofollow\">Modbus TCP \u4e0e RTU \u901a\u4fe1\u65b9\u5f0f\u5168\u9762\u5bf9\u6bd4<\/a><\/li>\n\n\n\n<li><a href=\"https:\/\/www.modbus.cn\/en\/modbus-address-mapping\/\" rel=\"noopener noreferrer nofollow\">Modbus \u5730\u5740\u6620\u5c04\u5b8c\u5168\u6307\u5357<\/a><\/li>\n\n\n\n<li><a href=\"https:\/\/www.modbus.cn\/en\/modbus-debugging-tools\/\" rel=\"noopener noreferrer nofollow\">Modbus \u8c03\u8bd5\u5de5\u5177\u4e0e\u6545\u969c\u6392\u67e5\u5b9e\u6218<\/a><\/li>\n\n\n\n<li><a href=\"https:\/\/www.modbus.cn\/en\/modbus-security-best-practices\/\" rel=\"noopener noreferrer nofollow\">Modbus \u901a\u4fe1\u5b89\u5168\u6700\u4f73\u5b9e\u8df5<\/a><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\u5de5\u63a7\u4e4b\u8def\uff0c\u9053\u963b\u4e14\u957f\u3002\u613f\u672c\u6587\u80fd\u6210\u4e3a\u4f60 Modbus \u7f16\u7a0b\u8def\u4e0a\u7684\u53ef\u9760\u4f34\u4fa3\u3002<\/p>\n<span id=\"magicpostMarker\"><\/span>","protected":false},"excerpt":{"rendered":"<p>Modbus \u5728\u4e3b\u6d41 PLC \u4e2d\u7684\u7f16\u7a0b\u5b9e\u6218\u6307\u5357\uff08\u897f\u95e8\u5b50\u3001\u4e09\u83f1&#8230;<\/p>","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":"","_members_access_role":[],"_members_access_error":""},"categories":[1],"tags":[3085,3087,3088,3089,3086],"class_list":["post-44512","post","type-post","status-publish","format-standard","hentry","category-uncategorized","tag-modbus-plc","tag-modbus"],"_links":{"self":[{"href":"https:\/\/www.modbus.cn\/en\/wp-json\/wp\/v2\/posts\/44512","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=44512"}],"version-history":[{"count":0,"href":"https:\/\/www.modbus.cn\/en\/wp-json\/wp\/v2\/posts\/44512\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.modbus.cn\/en\/wp-json\/wp\/v2\/media?parent=44512"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.modbus.cn\/en\/wp-json\/wp\/v2\/categories?post=44512"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.modbus.cn\/en\/wp-json\/wp\/v2\/tags?post=44512"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}