"# \u6b63\u6cf0\u53d8\u9891\u5668RS485-MODBUS\u901a\u8baf\u8bf4\u660e\n\n> 2022-07-03 | 2026-07-01\n> https:\/\/www.modbus.cn\/en\/8080.html\n\n**\u8bbe\u5907\u5bc4\u5b58\u5668\u624b\u518c**\n\n---\n\n![](https:\/\/image.modbus.cn\/wp-content\/uploads\/2022\/07\/2022071202205380.png)\n\n## \u7ec4\u7f51\u65b9\u5f0f \n\n\u53d8\u9891\u5668\u63d0\u4f9bRS485\u901a\u4fe1\u63a5\u53e3\uff0c\u91c7\u7528\u56fd\u9645\u6807\u51c6\u7684Modbus\u901a\u8baf\u534f\u8bae\u8fdb\u884c\u7684\u4e3b\u4ece\u901a\u8baf\u3002\u7528\u6237\u53ef\u901a\u8fc7PC\/PLC\u3001\u4e0a\u4f4d\u673a\u76d1\u63a7\u8f6f\u4ef6\u7b49\u5b9e\u73b0\u96c6\u4e2d\u63a7\u5236\uff08\u8bbe\u5b9a\u53d8\u9891\u5668\u7684\u63a7\u5236\u547d\u4ee4\u3001\u8fd0\u884c\u9891\u7387\u3001\u76f8\u5173\u529f\u80fd\u7801\u53c2\u6570\u7684\u4fee\u6539\uff0c\u53d8\u9891\u5668\u5de5\u4f5c\u72b6\u6001\u53ca\u6545\u969c\u4fe1\u606f\u7684\u76d1\u63a7\u7b49\uff09\uff0c\u4ee5\u9002\u5e94\u7279\u5b9a\u7684\u5e94\u7528\u8981\u6c42\u3002\n\n\u5982\u4e0b\u56fe\u6240\u793a\uff0c\u53d8\u9891\u5668\uff08\u4f5c\u4e3a\u4ece\u7ad9\uff09\u7684\u7ec4\u7f51\u65b9\u5f0f\u6709\u4e24\u79cd\uff1a\u5355\u4e3b\u673a\/\u591a\u4ece\u673a\u65b9\u5f0f\u3001\u5355\u4e3b\u673a\/\u5355\u4ece\u673a\u65b9\u5f0f\u3002\n\n![](https:\/\/image.modbus.cn\/wp-content\/uploads\/2022\/07\/1656855189042-950x385.png)**\u53d8\u9891\u5668\u7ec4\u7f51\u65b9\u5f0f\u793a\u610f\u56fe**\n\n## \u63a5\u53e3\u65b9\u5f0f\n\nRS485\u63a5\u53e3\uff1a\u5f02\u6b65\uff0c\u534a\u53cc\u5de5\u3002\u9ed8\u8ba4\uff1a1-8-N-2\uff081\u4f4d\u8d77\u59cb\u4f4d\uff0c8\u4f4d\u6570\u636e\u4f4d\uff0c\u65e0\u6821\u9a8c\uff0c2\u4f4d\u505c\u6b62\u4f4d\uff09\uff0c\n\n19200bps\uff0cRTU\uff0c\u4ece\u5730\u57400x0A\u3002\u53c2\u6570\u8bbe\u7f6e\u89c1Fb\u7ec4\u529f\u80fd\u7801\u8bf4\u660e\u3002\n\n## \u901a\u8baf\u65b9\u5f0f\n\n1\uff09\u53d8\u9891\u5668\u901a\u8baf\u534f\u8bae\u4e3aModbus\u534f\u8bae\uff0c\u652f\u6301RTU\u548cASCII\u534f\u8bae\u65b9\u5f0f\u3002\n\n2\uff09\u53d8\u9891\u5668\u4e3a\u4ece\u673a\uff0c\u4e3b\u4ece\u5f0f\u70b9\u5bf9\u70b9\u901a\u8baf\u3002\u4e3b\u673a\u4f7f\u7528\u5e7f\u64ad\u5730\u5740\u53d1\u9001\u547d\u4ee4\u65f6\uff0c\u4ece\u673a\u4e0d\u5e94\u7b54\u3002\n\n3\uff09\u5728\u591a\u673a\u901a\u8baf\u6216\u8005\u957f\u8ddd\u79bb\u7684\u60c5\u51b5\u4e0b\uff0c\u5728\u4e3b\u7ad9\u901a\u8baf\u7684\u4fe1\u53f7\u7ebf\u6b63\u7aef\u548c\u8d1f\u7aef\u5e76\u63a5\uff08100\uff5e120\uff09\u6b27\u59c6\u7684\u7535\u963b\u80fd\u63d0\u9ad8\u901a\u8baf\u7684\u6297\u6270\u6027\u3002\n\n4\uff09\u53d8\u9891\u5668\u53ea\u63d0\u4f9bRS485\u4e00\u79cd\u63a5\u53e3\uff0c\u82e5\u5916\u63a5\u8bbe\u5907\u7684\u901a\u8baf\u53e3\u4e3aRS232\u65f6\uff0c\u9700\u8981\u53e6\u52a0RS232\/RS485\n\n\u8f6c\u6362\u8bbe\u5907\u3002\n\n## \u534f\u8bae\u683c\u5f0f\n\nModbus\u534f\u8bae\u540c\u65f6\u652f\u6301RTU\u65b9\u5f0f\u548cASCII\u65b9\u5f0f\uff0c\u5bf9\u5e94\u7684\u5e27\u683c\u5f0f\u5982\u4e0b\u56fe\u6240\u793a\u3002\n\n![](https:\/\/image.modbus.cn\/wp-content\/uploads\/2022\/07\/1656855270599-950x340.png)\n**Modbus\u534f\u8bae\u683c\u5f0f**\n\n### RTU\u65b9\u5f0f\n\n\u5728RTU\u65b9\u5f0f\u4e0b\uff0c\u5e27\u4e4b\u95f4\u7684\u7a7a\u95f2\u65f6\u95f4\u53d6\u529f\u80fd\u7801\u8bbe\u5b9a\u548cModbus\u5185\u90e8\u7ea6\u5b9a\u503c\u4e2d\u7684\u8f83\u5927\u503c\u3002Modbus\u5185\u90e8\u7ea6\u5b9a\u7684\u6700\u5c0f\u5e27\u95f4\u7a7a\u95f2\u5982\u4e0b\uff1a\u5e27\u5934\u548c\u5e27\u5c3e\u901a\u8fc7\u603b\u7ebf\u7a7a\u95f2\u65f6\u95f4\u4e0d\u5c0f\u4e8e3.5\u4e2a\u5b57\u8282\u65f6\u95f4\u6765\u754c\u5b9a\u5e27\u3002\u6570\u636e\u6821\u9a8c\u91c7\u7528CRC-16\uff0c\u6574\u4e2a\u4fe1\u606f\u53c2\u4e0e\u6821\u9a8c\uff0c\u6821\u9a8c\u548c\u7684\u9ad8\u4f4e\u5b57\u8282\u9700\u8981\u4ea4\u6362\u540e\u53d1\u9001\u3002\u5177\u4f53\u7684CRC\u6821\u9a8c\u8bf7\u53c2\u8003\u534f\u8bae\u540e\u9762\u7684\u793a\u4f8b\u3002\u503c\u5f97\u6ce8\u610f\u7684\u662f\uff0c\u5e27\u95f4\u4fdd\u6301\u81f3\u5c113.5\u4e2a\u5b57\u7b26\u7684\u603b\u7ebf\u7a7a\u95f2\u5373\u53ef\uff0c\u5e27\u4e4b\u95f4\u7684\u603b\u7ebf\u7a7a\u95f2\u4e0d\u9700\u8981\u7d2f\u52a0\u8d77\u59cb\u548c\u7ed3\u675f\u7a7a\u95f2\u3002\n\n\u4e0b\u9762\u793a\u4f8b\u7528\u4e8e\u5728RTU\u65b9\u5f0f\u4e0b\u8bfb\u53d65\u53f7\u4ece\u673a\u7684\u5185\u90e8\u5bc4\u5b58\u56680x0101\uff08F1.01\uff09\u7684\u53c2\u6570\u3002\n\n\u8bf7\u6c42\u5e27\uff1a\n\n![](https:\/\/image.modbus.cn\/wp-content\/uploads\/2022\/07\/1656856112551-950x107.png)\n\n\u5e94\u7b54\u5e27\uff1a\n\n![](https:\/\/image.modbus.cn\/wp-content\/uploads\/2022\/07\/1656856148098-950x106.png)\n\n\u5176\u4e2d\uff0c\u6821\u9a8c\u7801\u4e3aCRC\u6821\u9a8c\u503c\u3002\n\n### ASCII\u65b9\u5f0f\n\n\u5728ASCII\u65b9\u5f0f\u4e0b\uff0c\u5e27\u5934\u4e3a\u201c0x3A\u201d\uff0c\u5e27\u5c3e\u7f3a\u7701\u4e3a\u201c0x0D\u30010x0A\u201d\uff0c\u5e27\u5c3e\u8fd8\u53ef\u7531\u7528\u6237\u914d\u7f6e\u8bbe\u5b9a\u3002\u5728\n\n\u6b64\u65b9\u5f0f\u4e0b\uff0c\u9664\u4e86\u5e27\u5934\u548c\u5e27\u5c3e\u4e4b\u5916\uff0c\u5176\u4f59\u7684\u6570\u636e\u5b57\u8282\u5168\u90e8\u4ee5ASCII\u7801\u65b9\u5f0f\u53d1\u9001\uff0c\u5148\u53d1\u9001\u9ad84\u4f4d\u4f4d\u5143\u7ec4\uff0c\n\n\u7136\u540e\u53d1\u9001\u4f4e4\u4f4d\u4f4d\u5143\u7ec4\u3002ASCII\u65b9\u5f0f\u4e0b\u6570\u636e\u4e3a7\u4f4d\u957f\u5ea6\u3002\u5bf9\u4e8e\u201cA\u201d\uff5e\u201cF\u201d\uff0c\u91c7\u7528\u5176\u5927\u5199\u5b57\u6bcd\u7684ASCII\u7801\u3002\n\n\u6b64\u65f6\u6570\u636e\u91c7\u7528LRC\u6821\u9a8c\uff0c\u6821\u9a8c\u6db5\u76d6\u4ece\u4ece\u5206\u3002\u6821\u9a8c\u548c\u7b49\u4e8e\u6240\u6709\u53c2\u4e0e\u6821\u9a8c\u6570\u636e\u7684\n\n\u5b57\u7b26\u548c\uff08\u820d\u5f03\u8fdb\u4f4d\u4f4d\uff09\u7684\u8865\u7801\u3002\n\n\u4e0b\u9762\u793a\u4f8b\u7528\u4e8e\u5728ASCII\u65b9\u5f0f\u51994000\uff080xFA0\uff09\u5230\u4ece\u673a5\u7684\u5185\u90e8\u5bc4\u5b58\u56680201\uff08F2.01\uff09\u3002\n\n\u8bf7\u6c42\u5e27\uff1a\n\n![](https:\/\/image.modbus.cn\/wp-content\/uploads\/2022\/07\/1656856193049-950x136.png)\n\n\u5176\u4e2d\uff0c\u6821\u9a8c\u7801\u4e3aLRC\u6821\u9a8c\u548c\uff0c\u5176\u503c\u7b49\u4e8e\uff0805+06+02+01+0x0F+0xA0\uff09\u7684\u8865\u7801\u3002\n\n\u5e94\u7b54\u5e27\uff1a\n\n![](https:\/\/image.modbus.cn\/wp-content\/uploads\/2022\/07\/1656856223397-950x135.png)\n\n\u53d8\u9891\u5668\u901a\u8fc7\u529f\u80fd\u7801\u53ef\u4ee5\u8bbe\u7f6e\u4e0d\u540c\u7684\u5e94\u7b54\u5ef6\u65f6\u4ee5\u9002\u5e94\u5404\u79cd\u4e3b\u7ad9\u7684\u5177\u4f53\u5e94\u7528\u9700\u8981\uff0c\u5bf9\u4e8eRTU\u6a21\u5f0f\u5b9e\u9645\u7684\u5e94\u7b54\u5ef6\u65f6\u4e0d\u5c0f\u4e8e3.5\u4e2a\u5b57\u7b26\u95f4\u9694\uff0c\u5bf9\u4e8eASCII\u6a21\u5f0f\u5b9e\u9645\u7684\u5e94\u7b54\u5ef6\u65f6\u4e0d\u5c0f\u4e8e1ms\u3002\n\n## \u534f\u8bae\u5e94\u7528\n\n### Modbus\u547d\u4ee4\u7801\n\nModbus\u6700\u4e3b\u8981\u7684\u529f\u80fd\u662f\u8bfb\/\u5199\u53d8\u9891\u5668\u7684\u529f\u80fd\u53c2\u6570\uff0c\u4e0d\u540c\u7684\u547d\u4ee4\u7801\u51b3\u5b9a\u4e0d\u540c\u7684\u64cd\u4f5c\u8bf7\u6c42\u3002\u53d8\u9891\u5668Modbus\u534f\u8bae\u652f\u6301\u4e0b\u8868\u4e2d\u7684\u64cd\u4f5c\u3002\n\n![](https:\/\/image.modbus.cn\/wp-content\/uploads\/2022\/07\/image-950x147.png)**Modbus\u547d\u4ee4\u7801\u53ca\u7528\u9014**\n\n### \u53d8\u9891\u5668\u529f\u80fd\u53c2\u6570\u5730\u5740\u6620\u5c04\u89c4\u5219\n\n\u53d8\u9891\u5668\u529f\u80fd\u53c2\u6570\u7684\u7ec4\u53f7\u6620\u5c04\u4e3amodbus\u5bc4\u5b58\u5668\u5730\u5740\u7684\u9ad8\u5b57\u8282\uff080~F\u5bf9\u5e94\u503c0x00~0x0F\uff09\uff0c\u7ec4\u5185\u7d22\u5f15\uff08\u5373\u53c2\u6570\u5728\u7ec4\u5185\u7684\u5e8f\u53f7\uff09\u6620\u5c04\u4e3aModbus\u5bc4\u5b58\u5668\u5730\u5740\u7684\u4f4e\u5b57\u8282\uff0800~99\u5bf9\u5e940x00~0x63\uff09\uff0c\u5f53\u6570\u636e\u53ea\u9700\u4fdd\u5b58\u5230RAM\u4e2d\uff08\u5373\u6389\u7535\u4e0d\u4fdd\u5b58\u6570\u636e\uff09\u65f6\uff0c\u5c06\u5730\u5740\u6700\u9ad8\u4f4d\u7f6e\u201c1\u201d\u3002\u4f8b\u5982\uff1a\u901a\u8baf\u4fee\u6539\u9891\u7387\u503c\uff0c\u53ef\u901a\u8fc7\u4fee\u6539\u529f\u80fd\u53c2\u6570F0.05\u5b9e\u73b0\u3002\n\n\u529f\u80fd\u53c2\u6570\u201cF0.05\u201d\uff08\u6570\u5b57\u8bbe\u5b9a\u9891\u7387\u503c\uff09\u5bf9\u5e94\u7684\u5bc4\u5b58\u5668\u5730\u5740\u4e3a\u201c0x0005\u201d\uff1a\n\n1\uff09\u5f53\u6570\u636e\u53ea\u4fdd\u5b58RAM\u65f6\uff0c\u5bf9\u5e94\u7684\u5730\u5740\u4e3a \u201d0x8005\u201d\u3002\n\n2\uff09\u5f53\u6570\u636e\u9700\u8981\u4fdd\u5b58\u81f3EEPROM\u6389\u7535\u4fdd\u5b58\u6570\u636e\uff09\u65f6\uff0c\u5bf9\u5e94\u7684\u5730\u5740\u4e3a \u201c0x0005\u201d\u3002\n\n\u5907\u6ce8\uff1a\n\n\u5f53\u9700\u8981\u9891\u7e41\u4fee\u6539\u8bbe\u5b9a\u9891\u7387\uff0c\u4e14\u4e0d\u9700\u8981\u6389\u7535\u4fdd\u5b58\u8be5\u53c2\u6570\u65f6\uff0c\u5efa\u8bae\u91c7\u7528\u91c7\u7528\u7b2c\u4e00\u79cd\u65b9\u5f0f\uff0c\u5373\u53ea\u4fdd\u5b58\u5230RAM\u4e2d\uff0c\u53ef\u4ee5\u5ef6\u957fEEPROM\u4f7f\u7528\u5bff\u547d\u3002\n\n### \u83b7\u53d6\u53d8\u9891\u5668\u529f\u80fd\u7801\u7684\u53c2\u6570\u5c5e\u6027\n\n\u53ef\u901a\u8fc70x04\u547d\u4ee4\u7801\u83b7\u53d6\u53d8\u9891\u5668\u7684\u529f\u80fd\u7801\u53c2\u6570\u5bf9\u5e94\u7684\u53c2\u6570\u5c5e\u6027\uff0c\u5c5e\u6027\u5b9a\u4e49\u683c\u5f0f\u5982\u8868:\n\n![](https:\/\/image.modbus.cn\/wp-content\/uploads\/2022\/07\/image-1.png)**\u8bfb\u53d6\u53c2\u6570\u5c5e\u6027\u65f6\u6570\u636e\u683c\u5f0f\u5b9a\u4e49**\n\n![](https:\/\/image.modbus.cn\/wp-content\/uploads\/2022\/07\/image-2.png)**\u53c2\u6570\u5c5e\u6027\u53d6\u503c\u4f4d(bit\uff09\u5b9a\u4e49**\n\n\u6ce8\u610f\uff1a\n\n\u53c2\u6570\u5c5e\u6027\u5305\u542b\u4e864\u4e2a\uff08\u62165\u4e2a\uff0916\u4f4d\u6570\u636e\u503c\uff0c\u5bc4\u5b58\u5668\u4e2a\u6570\u9700\u662f4\uff08\u62165\uff09\u7684\u6574\u6570\u500d\uff0c\u5426\u5219\u901a\u4fe1\u53cd\u9988\u975e\u6cd5\u5bc4\u5b58\u5668\u503c\u51fa\u9519\u3002\n\n## \u63a7\u5236\u547d\u4ee4\u3001\u72b6\u6001\u4fe1\u606f\u3001\u6545\u969c\u4fe1\u606f\n\nModbus\u4e3b\u7ad9\u53ef\u901a\u8fc7\u63a7\u5236\u547d\u4ee4\u5bf9\u6240\u63a7\u5236\u7684\u53d8\u9891\u5668\u542f\u52a8\u3001\u505c\u6b62\u3001\u8bbe\u5b9a\u8fd0\u884c\u9891\u7387\u7b49\u64cd\u4f5c\u3002\u901a\u8fc7\u76f8\u5e94\u547d\u4ee4\u68c0\u7d22\u53d8\u9891\u5668\u7684\u72b6\u6001\u53c2\u6570\u4fe1\u606f\uff08\u5982\uff1a\u8fd0\u884c\u9891\u7387\u3001\u8f93\u51fa\u7535\u6d41\u3001\u8f93\u51fa\u8f6c\u77e9\u7b49\u53c2\u6570\uff09\uff0c\u540c\u65f6\u53ef\u76d1\u63a7\u6240\u63a7\u5236\u53d8\u9891\u5668\u7684\u6545\u969c\u4fe1\u606f\u3002(\u901a\u7528\u53c2\u6570\u5730\u5740\u6620\u5c04\u89c4\u5219\u53c2\u80033.5.2),\u4e0b\u8868\u7279\u6b8a\u63a7\u5236\u53c2\u6570\u8be6\u7ec6\u8bf4\u660e\u3002\n\n![](https:\/\/image.modbus.cn\/wp-content\/uploads\/2022\/07\/image-3.png)**\u63a7\u5236\u53c2\u6570\u8be6\u7ec6\u8bf4\u660e**\n\n![](https:\/\/image.modbus.cn\/wp-content\/uploads\/2022\/07\/image-4.png)**\u7eed\u8868**1\n\n![](https:\/\/image.modbus.cn\/wp-content\/uploads\/2022\/07\/image-5.png)**\u7eed\u8868**2\n\n## \u53c2\u6570\u7ba1\u7406\n\nModbus\u4e3b\u7ad9\u53ef\u901a\u8fc7\u76f8\u5e94\u547d\u4ee4\u4eceCPU\u677f\u5b50\u4e2d\u83b7\u53d6\u7cfb\u7edf\u53c2\u6570\u7684\u7ec4\u6570\u548c\u7ec4\u53f7\u503c\uff0c\u5e76\u83b7\u53d6\u76f8\u5e94\u7ec4\u7684\u7ec4\u5185\u7f16\u53f7\u3002\u89c4\u5b9a\u901a\u4fe1\u529f\u80fd\u7801\u4e3a0x03\u201d,\u901a\u4fe1\u5730\u5740\u5b9a\u4e49\u5982\u8868\n\n![](https:\/\/image.modbus.cn\/wp-content\/uploads\/2022\/07\/image-6.png)**\u53c2\u6570\u7ba1\u7406\u529f\u80fd\u8bf4\u660e**\n\n![](https:\/\/image.modbus.cn\/wp-content\/uploads\/2022\/07\/image-7.png)\u7eed\u8868\n\n## \u63a5\u7ebf\u8bf4\u660e\n\n### \u62d3\u6251\u7ed3\u6784\n\n\u6ca1\u6709\u914d\u7f6e\u4e2d\u7ee7\u5668RS-485-Modbus\u6709\u4e00\u4e2a\u4e0e\u6240\u6709\u8bbe\u5907\u76f4\u63a5\u8fde\u63a5\uff08\u83ca\u82b1\u578b\uff09\u6216\u901a\u8fc7\u77ed\u5206\u652f\u7535\u7f06\u8fde\u63a5\u7684\u5e72\u7ebf\u7535\u7f06\u3002\n\n\u5e72\u7ebf\u7535\u7f06\uff0c\u53c8\u79f0\u603b\u7ebf\uff0c\u53ef\u80fd\u5f88\u957f\u3002\u5b83\u7684\u4e24\u7aef\u5fc5\u987b\u63a5\u7ebf\u8def\u7ec8\u7aef\u3002\u4e5f\u53ef\u4ee5\u5728\u591a\u4e2aRS-485Modbus\u4e4b\u95f4\u4f7f\u7528\u4e2d\u7ee7\u5668\u3002\u4e14\u7f51\u7edc\u4e2d\u7684\u6bcf\u4e2a\u4ece\u673a\u5730\u5740\u7684\u5730\u5740\u5177\u6709\u552f\u4e00\u6027\uff0c\u8fd9\u662f\u4fdd\u8bc1Modbus\u4e32\u884c\u901a\u8baf\u7684\u57fa\u7840\u3002\n\n### \u957f\u5ea6\n\n\u5fc5\u987b\u9650\u5236\u5e72\u7ebf\u7535\u7f06\u7684\u7aef\u5230\u7aef\u957f\u5ea6\u3002\u6700\u5927\u957f\u5ea6\u4e0e\u6ce2\u7279\u7387\u3001\u7535\u7f06\uff08\u89c4\u683c\u3001\u7535\u5bb9\u6216\u7279\u6027\u963b\u6297\uff09\u3001\u83ca\u82b1\u94fe\u4e0a\u7684\u8d1f\u8f7d\u6570\u91cf\u4ee5\u53ca\u7f51\u7edc\u914d\u7f6e\uff082\u7ebf\u62164\u7ebf\u5236\uff09\u6709\u5173\u3002\n\n\u5bf9\u4e8e\u9ad8\u901f\u6ce2\u7279\u7387\u4e3a9600bps\u3001AWG26\uff08\u6216\u66f4\u7c97\uff09\u89c4\u683c\u7684\u7535\u7f06\u6765\u8bf4\uff0c\u5176\u6700\u5927\u957f\u5ea6\u4e3a1000m\u3002\n\n\u5206\u652f\u5fc5\u987b\u77ed\uff0c\u4e0d\u80fd\u8d85\u8fc720m\u3002\u5982\u679c\u4f7f\u7528n\u4e2a\u5206\u652f\u7684\u591a\u7aef\u53e3\u5206\u652f\u5668\uff0c\u6bcf\u4e2a\u5206\u652f\u6700\u5927\u957f\u5ea6\u5fc5\u987b\u9650\u5236\u4e3a40m\u9664\u4ee5n\u3002\n\n### \u63a5\u5730\u5f62\u5f0f\n\n\u5fc5\u987b\u5c06\u201c\u516c\u5171\u7aef\u201d\u7535\u8def\uff08\u4fe1\u53f7\u4e0e\u53ef\u9009\u7535\u6e90\u7684\u516c\u5171\u7aef\uff09\u76f4\u63a5\u8fde\u63a5\u5230\u4fdd\u62a4\u5730\u4e0a\uff0c\u6700\u597d\u662f\u6574\u6761\u603b\u7ebf\u5355\u70b9\u63a5\u5730\u3002\u901a\u5e38\uff0c\u8be5\u70b9\u53ef\u9009\u5728\u4e3b\u7ad9\u4e0a\u6216\u5176\u5206\u652f\u5668\u4e0a\u3002\n\n### \u7535\u7f06\n\n\u4e32\u884c\u94fe\u8def\u4e0a\u7684Modbus\u7535\u7f06\u5fc5\u987b\u662f\u5c4f\u853d\u7684\u3002\u5728\u6bcf\u6761\u7535\u7f06\u4e00\u7aef\uff0c\u5176\u5c4f\u853d\u5fc5\u987b\u8fde\u63a5\u5230\u4fdd\u62a4\u5730\u4e0a\u3002\u82e5\u5728\u8fd9\u7aef\u4f7f\u7528\u4e86\u8fde\u63a5\u5668\uff0c\u5219\u5c06\u8fde\u63a5\u5668\u5916\u58f3\u8fde\u63a5\u5230\u7535\u7f06\u5c4f\u853d\u5c42\u4e0a\u3002RS485-Modbus\u5fc5\u987b\u4f7f\u7528\u4e00\u5bf9\u5e73\u8861\u7ebf\u5bf9\u548c\u7b2c\u4e09\u6839\u7ebf\uff08\u7528\u4e8e\u516c\u5171\u7aef\uff09\u3002\n\n\u5bf9RS485-Modbus\u6765\u8bf4\uff0c\u5fc5\u987b\u9009\u62e9\u8db3\u591f\u5bbd\u7684\u7ebf\u7f06\u76f4\u5f84\u4ee5\u4fbf\u5141\u8bb8\u4f7f\u7528\u6700\u5927\u957f\u5ea6\uff081000m\uff09\u3002\n\nAWG24\u80fd\u591f\u6ee1\u8db3Modbus\u6570\u636e\u4f20\u8f93\u7684\u9700\u8981\u3002\n\n## \u901a\u8baf\u5f02\u5e38\u7801\u5b9a\u4e49\n\n\u5f53\u901a\u4fe1\u8fc7\u7a0b\u4e2d\u68c0\u6d4b\u5230\u76f8\u5e94\u7684\u51fa\u9519\u4fe1\u606f\u65f6\uff0c\u4e0b\u4f4d\u673a\uff08\u5373CPU\u677f\uff09\u4f1a\u5c06\u529f\u80fd\u7801\u7684\u9ad8\u4f4d\u7f6e\u201c1\u201d\uff0c\u5e76\u53cd\u9988\u76f8\u5e94\u7684\u51fa\u9519\u7801\uff08\u5f02\u5e38\u7801\uff09\uff0c\u4ee5\u4fbf\u4e0a\u4f4d\u673a\u8bc6\u522b\u5f53\u524d\u51fa\u9519\u539f\u56e0\uff0c\u76f8\u5e94\u5b9a\u4e49\u5982\u8868\n\n![](https:\/\/image.modbus.cn\/wp-content\/uploads\/2022\/07\/image-8.png)**\u901a\u8baf\u5f02\u5e38\u7801\u5b9a\u4e49**\n\n![](https:\/\/image.modbus.cn\/wp-content\/uploads\/2022\/07\/image-9.png)**\u7eed\u8868**\n\n## Modbus\u901a\u8baf\u4e3e\u4f8b\n\n\u5728\u901a\u8baf\u4e4b\u524d\u9996\u5148\u8bbe\u7f6e\u597d\u76f8\u5173\u901a\u4fe1\u529f\u80fd\u53c2\u6570\uff0c\u4f7f\u4e0a\u4f4d\u673a\u548c\u4e0b\u4f4d\u673a\u7684\u901a\u8baf\u5730\u5740\u3001\u6ce2\u7279\u7387\u3001\u6570\u636e\u683c\u5f0f\u7b49\u4e00\u81f4\u3002\n\n### \u4f8b1\uff1a\n\n\u5982\u679c\u9700\u8981\u6539\u53d8\u53d8\u9891\u5668\u8d77\u59cb\u8bbe\u5b9a\u9891\u7387\uff0c\u5c0650.00Hz\u6539\u4e3a25.00Hz\u3002\n\n\u4e3b\u673a\u53d1\u9001\u7684\u6570\u636e\uff1a\n\n\u53d8\u9891\u5668\u5730\u5740\u5199\u547d\u4ee4\u53c2\u6570\u5730\u5740\u6570\u636e\u5185\u5bb9CRC\u6821\u9a8c**01****06****00 05****09 C4****9E 08**\n\n\u4e3b\u673a\u63a5\u6536\u5230\u7684\u6570\u636e\uff1a\n\n\u53d8\u9891\u5668\u5730\u5740\u5199\u547d\u4ee4\u53c2\u6570\u5730\u5740\u6570\u636e\u5185\u5bb9CRC\u6821\u9a8c**01****03****00 05****09 C4****9E 08**\n\n### \u4f8b2\uff1a\n\n\u5982\u679c\u9700\u8981\u8bfb\u53d6\u53d8\u9891\u5668F0.00\u7ec4\u63a7\u5236\u65b9\u5f0f\u3002\n\n\u4e3b\u673a\u53d1\u9001\u7684\u6570\u636e\uff1a\n\n\u53d8\u9891\u5668\u5730\u5740\u8bfb\u547d\u4ee4\u53c2\u6570\u5730\u5740\u6570\u636e\u4e2a\u6570CRC\u6821\u9a8c**01****03****00 00****00 01****84 0A**\n\n\u4e3b\u673a\u63a5\u6536\u5230\u7684\u6570\u636e\uff1a\n\n\u53d8\u9891\u5668\u5730\u5740\u8bfb\u547d\u4ee4\u53c2\u6570\u5730\u5740\u6570\u636e\u5185\u5bb9CRC\u6821\u9a8c**01****03****02****00 02****39 85**\n\n### \u4f8b3\uff1a\n\n\u5982\u679c\u8f93\u5165\u547d\u4ee4\u8d85\u51fa\u529f\u80fd\u7801\u53c2\u6570\u8bbe\u5b9a\u8303\u56f4\uff0c\u4ee5F0.01\uff08\u8fd0\u884c\u547d\u4ee4\u901a\u9053\u9009\u62e9\uff09\u7ec4\u4e3a\u4f8b\uff0c\u5982\u679c\u8f93\u5165\u547d\u4ee4\u4e3a4\uff0c\u8d85\u51fa\u4e86\u8bbe\u5b9a\u8303\u56f40\uff5e\uff12\uff0c\u90a3\u4e48\u4f1a\u51fa\u73b0\u9519\u8bef\u56de\u5e94\u4fe1\u606f\u3002\n\n\u4e3b\u673a\u53d1\u9001\u7684\u6570\u636e\uff1a\n\n\u53d8\u9891\u5668\u5730\u5740\u5199\u547d\u4ee4\u53c2\u6570\u5730\u5740\u6570\u636e\u5185\u5bb9CRC\u6821\u9a8c**01****06****00 01****00 04****D9 C9**\n\n\u4e3b\u673a\u63a5\u6536\u5230\u7684\u6570\u636e\uff1a\n\n\u53d8\u9891\u5668\u5730\u5740\u9519\u8bef\u56de\u5e94\u7801\u9519\u8bef\u4ee3\u7801\u6570\u636e\u5185\u5bb9CRC\u6821\u9a8c**01****86****12****00 02****C2 6D**\n\n---\n*modbus.cn*\n"