"# \u4f7f\u7528Spring Boot\u96c6\u6210Modbus\u8fdb\u884c\u8bbe\u5907\u901a\u4fe1\n\n> 2023-11-14 | 2023-11-14\n> https:\/\/www.modbus.cn\/en\/25773.html\n\n**Modbus\u7f16\u7a0b\u5f00\u53d1**\n\n---\n\n**\u6458\u8981\uff1a**\n\u5728\u81ea\u52a8\u5316\u548c\u5de5\u4e1a\u63a7\u5236\u7cfb\u7edf\u4e2d\uff0c\u8bbe\u5907\u4e4b\u95f4\u7684\u9ad8\u6548\u901a\u4fe1\u662f\u57fa\u7840\u4e14\u5173\u952e\u7684\u8981\u7d20\u3002\u672c\u6587\u65e8\u5728\u4ecb\u7ecd\u5982\u4f55\u901a\u8fc7Spring Boot\u96c6\u6210Modbus\uff0c\u5b9e\u73b0\u9ad8\u6548\u7684\u8bbe\u5907\u901a\u4fe1\u3002Modbus\u662f\u4e00\u79cd\u5e7f\u6cdb\u5e94\u7528\u4e8e\u5de5\u4e1a\u81ea\u52a8\u5316\u9886\u57df\u7684\u4e32\u884c\u901a\u4fe1\u534f\u8bae\uff0c\u7279\u522b\u9002\u5408\u4e8e\u76d1\u63a7\u548c\u63a7\u5236\u7cfb\u7edf\u3002\u6211\u4eec\u5c06\u63a2\u8ba8Modbus\u7684\u6838\u5fc3\u6982\u5ff5\u3001\u5176\u5728Spring Boot\u4e2d\u7684\u5b9e\u73b0\u65b9\u6cd5\uff0c\u4ee5\u53ca\u5982\u4f55\u901a\u8fc7\u8fd9\u79cd\u96c6\u6210\u8bfb\u5199\u8bbe\u5907\u6570\u636e\u3002\n\n**Modbus\u534f\u8bae\u6982\u8ff0\uff1a**\nModbus\u662f\u7531Modicon\u516c\u53f8\u5f00\u53d1\u7684\u4e00\u79cd\u901a\u4fe1\u534f\u8bae\uff0c\u4e3b\u8981\u7528\u4e8e\u53ef\u7f16\u7a0b\u903b\u8f91\u63a7\u5236\u5668\uff08PLC\uff09\u4e4b\u95f4\u7684\u901a\u4fe1\u3002\u5b83\u4ee5\u5176\u7b80\u5355\u6027\u3001\u5b9e\u65f6\u6027\u548c\u4f5c\u4e3a\u5f00\u653e\u6807\u51c6\u7684\u4e92\u64cd\u4f5c\u6027\u800c\u8457\u79f0\u3002Modbus\u652f\u6301\u591a\u79cd\u5f62\u5f0f\uff0c\u5305\u62ecModbus RTU\u3001Modbus ASCII\u548c\u57fa\u4e8e\u4ee5\u592a\u7f51\u7684Modbus TCP\/IP\uff0c\u80fd\u591f\u6ee1\u8db3\u4e0d\u540c\u7684\u901a\u4fe1\u9700\u6c42\u3002\n\n**\u96c6\u6210Spring Boot\u548cModbus\uff1a**\n\u5728Spring Boot\u5e94\u7528\u4e2d\u96c6\u6210Modbus\u4e3b\u8981\u6d89\u53ca\u4ee5\u4e0b\u51e0\u4e2a\u6b65\u9aa4\uff1a\n\n- **\u4f9d\u8d56\u914d\u7f6e\uff1a** \u5728\u9879\u76ee\u7684pom.xml\u6587\u4ef6\u4e2d\u6dfb\u52a0Java Modbus Library\u7684\u4f9d\u8d56\uff0c\u4ee5\u4fbf\u5b9e\u73b0Modbus\u901a\u4fe1\u3002\n\n```\n<dependency>\r\n    <groupId>com.intelligt.modbus<\/groupId>\r\n    <artifactId>modbus-core<\/artifactId>\r\n    <version>1.2.0<\/version>\r\n<\/dependency>\n```\n\n- **Modbus\u914d\u7f6e\uff1a** \u521b\u5efa\u4e00\u4e2a\u914d\u7f6e\u7c7b\uff0c\u914d\u7f6eModbus\u4e3b\u7ad9\uff08Master\uff09\u7684\u8fde\u63a5\u4fe1\u606f\uff0c\u5982\u4e32\u53e3\u8def\u5f84\u3001\u6ce2\u7279\u7387\u7b49\u3002\n\n```\nimport org.springframework.beans.factory.annotation.Value;\r\nimport org.springframework.context.annotation.Configuration;\r\n\r\n@Configuration\r\npublic class ModbusConfig {\r\n\r\n    @Value(\"${modbus.serialPort}\")\r\n    private String serialPort;\r\n\r\n    @Value(\"${modbus.baudRate}\")\r\n    private int baudRate;\r\n\r\n    @Value(\"${modbus.dataBits}\")\r\n    private int dataBits;\r\n\r\n    @Value(\"${modbus.stopBits}\")\r\n    private int stopBits;\r\n\r\n    @Value(\"${modbus.parity}\")\r\n    private int parity;\r\n\r\n    \/\/ ...\u5176\u4ed6\u914d\u7f6e\u53c2\u6570\r\n\r\n    @Bean\r\n    public ModbusMaster modbusMaster() {\r\n        ModbusFactory modbusFactory = new ModbusFactory();\r\n        Transport transport = new SerialTransport(serialPort, baudRate, dataBits, stopBits, parity);\r\n        ModbusMaster master = modbusFactory.createRtuMaster(transport);\r\n        master.init();\r\n        return master;\r\n    }\r\n}\n```\n\n- **\u6570\u636e\u8bfb\u5199\uff1a** \u5b9e\u73b0Service\u7c7b\uff0c\u5c01\u88c5\u8bfb\u53d6\u548c\u5199\u5165Modbus\u8bbe\u5907\u6570\u636e\u7684\u65b9\u6cd5\u3002\u901a\u8fc7\u8c03\u7528\u8fd9\u4e9b\u65b9\u6cd5\uff0c\u53ef\u4ee5\u5b9e\u73b0\u5bf9Modbus\u4ece\u7ad9\uff08Slave\uff09\u7684\u8bfb\u53d6\u548c\u63a7\u5236\u3002\n\n```\n@Service\r\npublic class ModbusService {\r\n\r\n    @Autowired\r\n    private ModbusMaster modbusMaster;\r\n\r\n    public int readHoldingRegister(int slaveId, int offset) {\r\n        try {\r\n            \/\/\u521b\u5efa\u4e00\u4e2a\u4fdd\u6301\u5bc4\u5b58\u5668\u7684\u6570\u636e\u5b9a\u4f4d\u5668\uff08Locator\uff09\u5bf9\u8c61\r\n            BaseLocator<Integer> locator = BaseLocator.holdingRegister(slaveId, offset, DataType.TWO_BYTE_INT_SIGNED);\r\n            return modbusMaster.getValue(locator);\r\n        } catch (ModbusTransportException | ErrorResponseException e) {\r\n            e.printStackTrace();\r\n            return -1;\r\n        }\r\n    }\r\n}\n```\n\n**\u793a\u4f8b\u5e94\u7528\uff1a**\n\u6211\u4eec\u5c06\u5c55\u793a\u4e00\u4e2a\u7b80\u5355\u7684\u5e94\u7528\u793a\u4f8b\uff0c\u5c55\u793a\u5982\u4f55\u901a\u8fc7Spring Boot\u8bfb\u53d6Modbus\u8bbe\u5907\u7684\u4fdd\u6301\u5bc4\u5b58\u5668\u6570\u636e\u3002\u8fd9\u6d89\u53ca\u5230\u521b\u5efa\u6570\u636e\u5b9a\u4f4d\u5668\uff08Locator\uff09\u548c\u6267\u884cModbus\u8bfb\u53d6\u547d\u4ee4\u3002\n\n\u53c2\u6570\u8bf4\u660e\uff1a\n\n- `slaveId`\uff1a\u8fd9\u662f Modbus \u901a\u4fe1\u4e2d\u7684\u4ece\u7ad9\u5730\u5740\u3002\u6bcf\u4e2a Modbus \u4ece\u7ad9\u8bbe\u5907\u90fd\u6709\u4e00\u4e2a\u552f\u4e00\u7684\u5730\u5740\uff0c\u901a\u5e38\u5728 1 \u5230 247 \u4e4b\u95f4\u3002`slaveId` \u53c2\u6570\u7528\u4e8e\u6307\u5b9a\u8981\u4e0e\u4e4b\u901a\u4fe1\u7684\u76ee\u6807\u4ece\u7ad9\u8bbe\u5907\u7684\u5730\u5740\u3002\u901a\u5e38\uff0cModbus \u4e3b\u7ad9\u5411\u7279\u5b9a\u7684\u4ece\u7ad9\u8bbe\u5907\u53d1\u9001\u8bf7\u6c42\uff0c\u4ece\u7ad9\u8bbe\u5907\u6839\u636e\u5176\u5730\u5740\u6765\u5224\u65ad\u662f\u5426\u9700\u8981\u54cd\u5e94\u8bf7\u6c42\u3002\u56e0\u6b64\uff0c`slaveId` \u53c2\u6570\u6307\u5b9a\u4e86\u901a\u4fe1\u7684\u76ee\u6807\u3002\n\n- `offset`\uff1a\u8fd9\u4e2a\u53c2\u6570\u7528\u4e8e\u6307\u5b9a\u8981\u8bfb\u53d6\u7684\u4fdd\u6301\u5bc4\u5b58\u5668\u7684\u8d77\u59cb\u5730\u5740\u3002Modbus \u534f\u8bae\u4e2d\u7684\u5bc4\u5b58\u5668\u901a\u5e38\u662f\u4e00\u4e2a 16 \u4f4d\u7684\u6570\u636e\u5355\u5143\uff0c\u53ef\u4ee5\u5b58\u50a8\u6574\u6570\u3001\u6d6e\u70b9\u6570\u6216\u5176\u4ed6\u6570\u636e\u7c7b\u578b\u3002`offset` \u53c2\u6570\u8868\u793a\u4ece\u54ea\u4e2a\u5bc4\u5b58\u5668\u5f00\u59cb\u8bfb\u53d6\u6570\u636e\u3002\u901a\u8fc7\u6307\u5b9a `offset`\uff0c\u60a8\u53ef\u4ee5\u786e\u5b9a\u8981\u8bfb\u53d6\u7684\u5bc4\u5b58\u5668\u7684\u4f4d\u7f6e\u3002\n\n\u4f8b\u5982\uff0c\u5982\u679c\u60a8\u8c03\u7528\u00a0`readHoldingRegister(1, 100)`\uff0c\u8fd9\u8868\u793a\u8981\u8bfb\u53d6\u4ece\u7ad9\u5730\u5740\u4e3a 1 \u7684\u8bbe\u5907\u7684\u4fdd\u6301\u5bc4\u5b58\u5668\uff0c\u4ece\u5bc4\u5b58\u5668\u5730\u5740 100 \u5f00\u59cb\u8bfb\u53d6\u6570\u636e\u3002\u8fd9\u4e24\u4e2a\u53c2\u6570\u5171\u540c\u786e\u5b9a\u4e86\u8981\u8bfb\u53d6\u7684\u5bc4\u5b58\u5668\u7684\u4f4d\u7f6e\u548c\u76ee\u6807\u8bbe\u5907\u3002\u901a\u5e38\uff0c\u60a8\u4f1a\u6839\u636e\u7279\u5b9a\u7684\u4ece\u7ad9\u8bbe\u5907\u914d\u7f6e\u548c\u901a\u4fe1\u9700\u6c42\u6765\u4f20\u9012\u4e0d\u540c\u7684\u00a0`slaveId`\u00a0\u548c\u00a0`offset`\u00a0\u503c\uff0c\u4ee5\u5b9e\u73b0\u5bf9\u4e0d\u540c\u8bbe\u5907\u548c\u4e0d\u540c\u5bc4\u5b58\u5668\u7684\u8bfb\u53d6\u64cd\u4f5c\u3002\u8fd9\u4e24\u4e2a\u53c2\u6570\u662f Modbus \u901a\u4fe1\u4e2d\u7684\u5173\u952e\u53c2\u6570\uff0c\u7528\u4e8e\u6307\u5b9a\u901a\u4fe1\u7684\u76ee\u6807\u548c\u6570\u636e\u7684\u4f4d\u7f6e\u3002\n\n**\u5199\u5165Modbus\u6570\u636e**\n\n\u5982\u679c\u9700\u8981\u5199\u5165Modbus\u8bbe\u5907\u7684\u6570\u636e\uff0c\u53ef\u4ee5\u521b\u5efa\u4e00\u4e2a\u65b9\u6cd5\u6765\u6267\u884c\u5199\u5165\u64cd\u4f5c\u3002\u4ee5\u4e0b\u662f\u4e00\u4e2a\u793a\u4f8b\uff1a\n\n```\npublic void writeHoldingRegister(int slaveId, int offset, int value) {\r\n    \/\/slaveId\uff1a\u8fd9\u662f Modbus \u901a\u4fe1\u4e2d\u7684\u4ece\u7ad9\u5730\u5740\r\n    \/\/offset\uff1a\u7528\u4e8e\u6307\u5b9a\u8981\u5199\u5165\u7684\u4fdd\u6301\u5bc4\u5b58\u5668\u7684\u8d77\u59cb\u5730\u5740\r\n    \/\/value\uff1a\u8fd9\u662f\u8981\u5199\u5165\u5230\u6307\u5b9a\u5bc4\u5b58\u5668\u7684\u6570\u503c\r\n    try {\r\n        BaseLocator<Integer> locator = BaseLocator.holdingRegister(slaveId, offset, DataType.TWO_BYTE_INT_SIGNED);\r\n        modbusMaster.setValue(locator, value);\r\n    } catch (ModbusTransportException | ErrorResponseException e) {\r\n        e.printStackTrace();\r\n    }\r\n}\n```\n\n\u8fd9\u4e2a\u65b9\u6cd5\u5141\u8bb8\u60a8\u5199\u5165Modbus\u4fdd\u6301\u5bc4\u5b58\u5668\u7684\u503c\u3002\n\n**\u914d\u7f6e\u6587\u4ef6**\n\n\u6839\u636e\u9879\u76ee\u9700\u8981\uff0c\u60a8\u53ef\u4ee5\u5728`application.properties`\u6216`application.yml`\u4e2d\u914d\u7f6eModbus\u8fde\u63a5\u4fe1\u606f\uff0c\u4f8b\u5982\u4e32\u53e3\u8bbe\u5907\u8def\u5f84\u3001\u6ce2\u7279\u7387\u7b49\u3002\u4ee5\u4e0b\u662f\u4e00\u4e2a\u793a\u4f8bYAML\u914d\u7f6e\uff1a\n\n```\nmodbus:\r\n  #\u4e32\u53e3\u8bbe\u5907\u8def\u5f84\r\n  serialPort: \/dev\/ttyUSB0\r\n  #\u6ce2\u7279\u7387\r\n  baudRate: 9600\r\n  #\u6570\u636e\u4f4d\u6570\r\n  dataBits: 8\r\n  #\u505c\u6b62\u4f4d\u6570\r\n  stopBits: 1\r\n  #\u6821\u9a8c\u4f4d\uff0c\u4f8b\u59820\uff080\u8868\u793a\u65e0\u6821\u9a8c\uff0c1\u8868\u793a\u5947\u6821\u9a8c\uff0c2\u8868\u793a\u5076\u6821\u9a8c\uff09\r\n  parity: 0\n```\n\n**\u7ed3\u8bba\uff1a**\n\u96c6\u6210Spring Boot\u4e0eModbus\u4e3a\u5f00\u53d1\u4eba\u5458\u63d0\u4f9b\u4e86\u4e00\u4e2a\u5f3a\u5927\u4e14\u7075\u6d3b\u7684\u5e73\u53f0\uff0c\u7528\u4e8e\u6784\u5efa\u548c\u7ba1\u7406\u5de5\u4e1a\u901a\u4fe1\u7cfb\u7edf\u3002\u901a\u8fc7\u672c\u6587\u63d0\u4f9b\u7684\u65b9\u6cd5\u548c\u793a\u4f8b\uff0c\u60a8\u53ef\u4ee5\u5feb\u901f\u5f00\u59cb\u5b9e\u73b0\u57fa\u4e8eModbus\u7684\u8bbe\u5907\u901a\u4fe1\u3002\n\n---\n*modbus.cn*\n"