springboot串口通讯modbus-rtu
时间: 2023-09-02 07:09:01 浏览: 150
modbus rtu 串口通信
实现串口通讯modbus-rtu可以使用Java串口通讯库rxtx,然后再结合modbus4j库来实现modbus-rtu协议的通信。
下面是一个简单的示例代码:
1. pom.xml中添加依赖
```xml
<dependency>
<groupId>com.intelligt.modbus</groupId>
<artifactId>modbus4j</artifactId>
<version>3.1.4</version>
</dependency>
<dependency>
<groupId>org.rxtx</groupId>
<artifactId>rxtx</artifactId>
<version>2.2.0</version>
</dependency>
```
2. 配置串口参数
```java
SerialPort serialPort = (SerialPort) portId.open("modbus", 2000);
serialPort.setSerialPortParams(9600, SerialPort.DATABITS_8, SerialPort.STOPBITS_1, SerialPort.PARITY_NONE);
```
3. 创建ModbusMaster
```java
ModbusFactory modbusFactory = new ModbusFactory();
ModbusMaster master = modbusFactory.createRtuMaster(serialPort);
master.setTimeout(500);
master.setRetries(0);
```
4. 读取寄存器
```java
int slaveId = 1;
int startOffset = 0;
int numberOfRegisters = 10;
ReadInputRegistersRequest request = new ReadInputRegistersRequest(slaveId, startOffset, numberOfRegisters);
ReadInputRegistersResponse response = (ReadInputRegistersResponse) master.send(request);
if (response.isException()) {
// 处理异常
} else {
// 处理响应结果
}
```
5. 写入寄存器
```java
int slaveId = 1;
int offset = 0;
int value = 1234;
WriteRegisterRequest request = new WriteRegisterRequest(slaveId, offset, value);
WriteRegisterResponse response = (WriteRegisterResponse) master.send(request);
if (response.isException()) {
// 处理异常
} else {
// 处理响应结果
}
```
以上就是一个简单的串口通讯modbus-rtu的实现示例,具体实现还需要根据实际情况进行调整。
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