"# Python\u7f16\u5199ModbusTCP\u901a\u8baf\u7a0b\u5e8f\u7684\u793a\u4f8b\u4ee3\u7801\n\n> 2023-02-11 | 2023-02-11\n> https:\/\/www.modbus.cn\/en\/11676.html\n\n**Modbus\u7f16\u7a0b\u5f00\u53d1**\n\n---\n\nPython\u7f16\u5199ModbusTCP\u901a\u8baf\u7a0b\u5e8f\u7684\u793a\u4f8b\u4ee3\u7801\n\n```\n# \u5bfc\u5165pymodbus\u5e93\r\nfrom pymodbus.client.sync import ModbusTcpClient\r\n\r\n# \u521b\u5efaModbus TCP\u5ba2\u6237\u7aef\u5bf9\u8c61\r\nclient = ModbusTcpClient('127.0.0.1', port=502)\r\n\r\n# \u8fde\u63a5Modbus TCP\u670d\u52a1\u5668\r\nclient.connect()\r\n\r\n# \u8bfb\u53d6\u4fdd\u6301\u5bc4\u5b58\u5668\u7684\u6570\u636e\r\nresult = client.read_holding_registers(address=0, count=1, unit=1)\r\n\r\n# \u5904\u7406\u8bfb\u53d6\u7ed3\u679c\r\nif result.isError():\r\n    print(\"\u8bfb\u53d6\u4fdd\u6301\u5bc4\u5b58\u5668\u5931\u8d25\uff1a{0}\".format(result))\r\nelse:\r\n    print(\"\u8bfb\u53d6\u4fdd\u6301\u5bc4\u5b58\u5668\u6210\u529f\uff1a{0}\".format(result.registers[0]))\r\n\r\n# \u5199\u5165\u4fdd\u6301\u5bc4\u5b58\u5668\u7684\u6570\u636e\r\nresult = client.write_register(address=0, value=123, unit=1)\r\n\r\n# \u5904\u7406\u5199\u5165\u7ed3\u679c\r\nif result.isError():\r\n    print(\"\u5199\u5165\u4fdd\u6301\u5bc4\u5b58\u5668\u5931\u8d25\uff1a{0}\".format(result))\r\nelse:\r\n    print(\"\u5199\u5165\u4fdd\u6301\u5bc4\u5b58\u5668\u6210\u529f\")\r\n\r\n# \u5173\u95edModbus TCP\u5ba2\u6237\u7aef\u8fde\u63a5\r\nclient.close()\r\n\n```\n\n\u4ee5\u4e0a\u4ee3\u7801\u4f7f\u7528\u4e86`pymodbus`\u5e93\uff0c\u5b9e\u73b0\u4e86\u5bf9Modbus TCP\u670d\u52a1\u5668\u7684\u8fde\u63a5\u3001\u8bfb\u5199\u4fdd\u6301\u5bc4\u5b58\u5668\u7b49\u64cd\u4f5c\u3002\u5728\u4f7f\u7528\u4e4b\u524d\u9700\u8981\u5148\u5b89\u88c5`pymodbus`\u5e93\u3002\n\n\u9700\u8981\u6ce8\u610f\u7684\u662f\uff0c\u5728\u5b9e\u9645\u5e94\u7528\u4e2d\uff0c\u9700\u8981\u6839\u636e\u5177\u4f53\u7684Modbus\u8bbe\u5907\u5730\u5740\u3001\u529f\u80fd\u7801\u3001\u6570\u636e\u7c7b\u578b\u7b49\u53c2\u6570\u8fdb\u884c\u914d\u7f6e\uff0c\u5e76\u6839\u636e\u5b9e\u9645\u9700\u6c42\u8fdb\u884c\u6570\u636e\u8bfb\u5199\u3002\u540c\u65f6\uff0c\u5bf9\u4e8e\u590d\u6742\u7684Modbus\u5e94\u7528\uff0c\u53ef\u80fd\u9700\u8981\u8fdb\u884c\u7a0b\u5e8f\u4f18\u5316\u548c\u786c\u4ef6\u8bbe\u8ba1\uff0c\u786e\u4fdd\u901a\u8baf\u7a33\u5b9a\u548c\u53ef\u9760\u3002\n\n---\n*modbus.cn*\n"