modbus4j中使用modbus tcp/ip和modbus rtu over tcp/ip模式

通过借鉴高人博客，总结如下：

1. TcpMaster类，用于生成ModbusMaster主类

package sun.sunboat;
public class TcpMaster {

    private static ModbusFactory modbusFactory;

    static {
        if (modbusFactory == null) {
            modbusFactory = new ModbusFactory();
        }
    }

    /**
     * 获取master
     *
     * @return master
     */
    public static ModbusMaster getMaster() {
        IpParameters params = new IpParameters();
        params.setHost("localhost");
        params.setPort(502);
        params.setEncapsulated(false);//这个属性确定了协议帧是否是通过tcp封装的RTU结构，采用modbus tcp/ip时，要设为false, 采用modbus rtu over tcp/ip时，要设为true
        ModbusMaster master = modbusFactory.createTcpMaster(params, false);// TCP 协议
        try {
            //设置超时时间
            master.setTimeout(1000);
            //设置重连次数
            master.setRetries(3);
            //初始化
            master.init();
        } catch (ModbusInitException e) {
            e.printStackTrace();
        }
        return master;
    }

    /**
     * 获取master
     *
     * @return master
     */
    public static ModbusMaster getMaster(String ipAdd) {
        IpParameters params = new IpParameters();
        params.setHost(ipAdd);
        params.setPort(502);
        params.setEncapsulated(true);
        ModbusMaster master = modbusFactory.createTcpMaster(params, false);// TCP 协议
        try {
            //设置超时时间
            master.setTimeout(1000);
            //设置重连次数
            master.setRetries(3);
            //初始化
            master.init();
        } catch (ModbusInitException e) {
            e.printStackTrace();
        }
        return master;
    }

}

2. 读取类Modbus4jReader

package sun.sunboat;
public class Modbus4jReader {
    //获取master
    //private static ModbusMaster master = TcpMaster.getMaster();
    private ModbusMaster master = null;
    public Modbus4jReader(ModbusMaster master) {
        this.master = master;
    }
    /**
     * 读（线圈）开关量数据
     *
     * @param slaveId slaveId
     * @param offset  位置
     * @return 读取值
     */
    public boolean[] readCoilStatus(int slaveId, int offset, int numberOfBits)
            throws ModbusTransportException, ErrorResponseException, ModbusInitException {

        ReadCoilsRequest request = new ReadCoilsRequest(slaveId, offset, numberOfBits);
        ReadCoilsResponse response = (ReadCoilsResponse) master.send(request);
        boolean[] booleans = response.getBooleanData();
        return valueRegroup(numberOfBits, booleans);
    }

    /**
     * 开关数据 读取外围设备输入的开关量
     */
    public boolean[] readInputStatus(int slaveId, int offset, int numberOfBits)
            throws ModbusTransportException, ErrorResponseException, ModbusInitException {
        ReadDiscreteInputsRequest request = new ReadDiscreteInputsRequest(slaveId, offset, numberOfBits);
        ReadDiscreteInputsResponse response = (ReadDiscreteInputsResponse) master.send(request);
        boolean[] booleans = response.getBooleanData();
        return valueRegroup(numberOfBits, booleans);
    }

    /**
     * 读取保持寄存器数据
     *
     * @param slaveId slave Id
     * @param offset  位置
     */
    public short[] readHoldingRegister(int slaveId, int offset, int numberOfBits)
            throws ModbusTransportException, ErrorResponseException, ModbusInitException {
        ReadHoldingRegistersRequest request = new ReadHoldingRegistersRequest(slaveId, offset, numberOfBits);
        ReadHoldingRegistersResponse response = (ReadHoldingRegistersResponse) master.send(request);
        return response.getShortData();
    }

    /**
     * 读取外围设备输入的数据
     *
     * @param slaveId slaveId
     * @param offset  位置
     */
    public short[] readInputRegisters(int slaveId, int offset, int numberOfBits)
            throws ModbusTransportException, ErrorResponseException, ModbusInitException {

        ReadInputRegistersRequest request = new ReadInputRegistersRequest(slaveId, offset, numberOfBits);
        ReadInputRegistersResponse response = (ReadInputRegistersResponse) master.send(request);
        return response.getShortData();
    }

    /**
     * 批量读取 可以批量读取不同寄存器中数据
     */
    public void batchRead() throws ModbusTransportException, ErrorResponseException, ModbusInitException {

        BatchRead<Integer> batch = new BatchRead<Integer>();
        batch.addLocator(0, BaseLocator.holdingRegister(1, 1, DataType.TWO_BYTE_INT_SIGNED));
        batch.addLocator(1, BaseLocator.inputStatus(1, 0));
        batch.setContiguousRequests(true);
        BatchResults<Integer> results = master.send(batch);
        System.out.println("batchRead:" + results.getValue(0));
        System.out.println("batchRead:" + results.getValue(1));
    }

    private boolean[] valueRegroup(int numberOfBits, boolean[] values) {
        boolean[] bs = new boolean[numberOfBits];
        int temp = 1;
        for (boolean b : values) {
            bs[temp - 1] = b;
            temp++;
            if (temp > numberOfBits)
                break;
        }
        return bs;
    }
}

3. 写入类

package sun.sunboat;
public class Modbus4jWriter {
    // 获取Master
    //private static ModbusMaster tcpMaster = TcpMaster.getMaster();
    private ModbusMaster tcpMaster = null;
    public Modbus4jWriter(ModbusMaster master) {
        this.tcpMaster = master;
    }
    /**
     * 写单个（线圈）开关量数据
     *
     * @param slaveId     slave的ID
     * @param writeOffset 位置
     * @param writeValue  值
     * @return 是否写入成功
     */
    public boolean writeCoil(int slaveId, int writeOffset, boolean writeValue)
            throws ModbusTransportException, ModbusInitException {
        // 创建请求
        WriteCoilRequest request = new WriteCoilRequest(slaveId, writeOffset, writeValue);
        // 发送请求并获取响应对象
        WriteCoilResponse response = (WriteCoilResponse) tcpMaster.send(request);
        return !response.isException();
    }

    /**
     * 写多个开关量数据（线圈）
     *
     * @param slaveId     slaveId
     * @param startOffset 开始位置
     * @param bdata       写入的数据
     * @return 是否写入成功
     */
    public boolean writeCoils(int slaveId, int startOffset, boolean[] bdata)
            throws ModbusTransportException, ModbusInitException {
        // 创建请求
        WriteCoilsRequest request = new WriteCoilsRequest(slaveId, startOffset, bdata);
        // 发送请求并获取响应对象
        WriteCoilsResponse response = (WriteCoilsResponse) tcpMaster.send(request);
        return !response.isException();

    }

    /***
     *  保持寄存器写单个
     *
     * @param slaveId slaveId
     * @param writeOffset 开始位置
     * @param writeValue 写入的数据
     */
    public boolean writeRegister(int slaveId, int writeOffset, short writeValue)
            throws ModbusTransportException, ModbusInitException {
        // 创建请求对象
        WriteRegisterRequest request = new WriteRegisterRequest(slaveId, writeOffset, writeValue);
        // 发送请求并获取响应对象
        WriteRegisterResponse response = (WriteRegisterResponse) tcpMaster.send(request);
        return !response.isException();

    }

    /**
     * 保持寄存器写入多个模拟量数据
     *
     * @param slaveId     modbus的slaveID
     * @param startOffset 起始位置偏移量值
     * @param sdata       写入的数据
     * @return 返回是否写入成功
     */
    public boolean writeRegisters(int slaveId, int startOffset, short[] sdata)
            throws ModbusTransportException, ModbusInitException {
        // 创建请求对象
        WriteRegistersRequest request = new WriteRegistersRequest(slaveId, startOffset, sdata);
        // 发送请求并获取响应对象
        WriteRegistersResponse response = (WriteRegistersResponse) tcpMaster.send(request);
        return !response.isException();
    }

    /**
     * 根据类型写数据（如:写入Float类型的模拟量、Double类型模拟量、整数类型Short、Integer、Long）
     *
     * @param value    写入值
     * @param dataType com.serotonin.modbus4j.code.DataType 类型定义在com.serotonin.modbus4j.code.DataType类中

*/ public void writeHoldingRegister(int slaveId, int offset, Number value, int dataType) throws ModbusTransportException, ErrorResponseException, ModbusInitException { // 类型 BaseLocator<Number> locator = BaseLocator.holdingRegister(slaveId, offset, dataType); tcpMaster.setValue(locator, value); } }

4. 依赖项

    <dependency>
        <groupId>com.infiniteautomation</groupId>
        <artifactId>modbus4j</artifactId>
        <version>3.0.4</version>
    </dependency>