1. Maven依赖
<!-- modbus4j -->
<dependency>
<groupId>com.infiniteautomation</groupId>
<artifactId>modbus4j</artifactId>
<version>3.0.3</version>
</dependency>
2. TcpMaster类，用于生成ModbusMaster主类
import com.serotonin.modbus4j.ModbusFactory;
import com.serotonin.modbus4j.ModbusMaster;
import com.serotonin.modbus4j.exception.ModbusInitException;
import com.serotonin.modbus4j.ip.IpParameters;
public class ModbusTcpMaster {
private static ModbusFactory modbusFactory;
static {
if (modbusFactory == null) {
modbusFactory = new ModbusFactory();
}
}
/**
* 获取Tcp master
* @param ip
* @param port
* @return
*/
public static ModbusMaster getMaster(String ip, int port) {
IpParameters params = new IpParameters();
params.setHost(ip);
params.setPort(port);
//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
params.setEncapsulated(false);
// 参数1：IP和端口信息 参数2：保持连接激活
ModbusMaster master = null;
master = modbusFactory.createTcpMaster(params, true);
try {
//设置超时时间
master.setTimeout(500);
//设置重连次数
master.setRetries(2);
//初始化
master.init();
} catch (ModbusInitException e) {
e.printStackTrace();
}
return master;
}
}
3. 读取类Modbus4jReader
import com.serotonin.modbus4j.BatchRead;
import com.serotonin.modbus4j.BatchResults;
import com.serotonin.modbus4j.ModbusMaster;
import com.serotonin.modbus4j.code.DataType;
import com.serotonin.modbus4j.exception.ErrorResponseException;
import com.serotonin.modbus4j.exception.ModbusInitException;
import com.serotonin.modbus4j.exception.ModbusTransportException;
import com.serotonin.modbus4j.locator.BaseLocator;
import com.serotonin.modbus4j.msg.*;
public class Modbus4jReadUtils {
/**
* 读（线圈）开关量数据
* 功能码为：01； 读取开关量输出点的ON/OFF状态,可以读写的布尔类型(0x)---00001 至 0xxxx – 开关量输出
* @param slaveId slaveId-从站编号-自行约定
* @param offset 位置
* @return 读取值-读取多少个
*/
public boolean[] readCoilStatus(ModbusMaster master,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
* 功能码为：02；读取开关量输入点的ON/OFF状态,只能读的布尔类型(1x)---10001 至 1xxxx – 开关量输入
* @param slaveId-从站编号-自行约定
* @param offset-预访问的地址-地址范围：0-255
* @param numberOfBits-读取多少个
* @return
* @throws ModbusTransportException
* @throws ErrorResponseException
* @throws ModbusInitException
*/
public boolean[] readInputStatus(ModbusMaster master,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
* 功能码为：03 读取保持寄存器的数据,可以读写的数字类型(4x)---40001 至 4xxxx – 保持寄存器
*
**举例子说明：S7-200
Smart PLC中，设置 [HoldStr~]=&VB1000;则对应的保持寄存器地址为VW1000\VW1002\VW10004
**在java中对应的address为：0、1、2
* @param slaveId slave Id-从站编号-自行约定
* @param offset 位置
* @param numberOfBits numberOfRegisters 寄存器个数 每个寄存器表示一个16位无符号整数 相当于一个short
*/
public static short[] readHoldingRegister(ModbusMaster master,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[03 Holding Register类型 2x]模拟量数据
* @param slaveId slave Id
* @param offset 位置
* @param dataType 数据类型,来自com.serotonin.modbus4j.code.DataType
* @return
* @throws ModbusTransportException 异常
* @throws ErrorResponseException 异常
* @throws ModbusInitException 异常
*/
public static Number readHoldingRegisterByDataType(ModbusMaster master,int slaveId, int offset, int dataType)
throws ModbusTransportException, ErrorResponseException, ModbusInitException {
// 03 Holding Register类型数据读取
BaseLocator<Number> loc = BaseLocator.holdingRegister(slaveId, offset, dataType);
Number value = master.getValue(loc);
return value;
}
/**
* 读取外围设备输入的数据
* 功能码为：04 读取模拟量输入值，只能读的数字类型(3x)---30001 至 3xxxx – 模拟量输入
*
* 举例子说明：S7-200 Smart PLC中，模拟量输入寄存器AIW16\AIW18,则对应
* java中对应的address为：8\9
* @param slaveId slaveId-从站编号-自行约定
* @param offset 位置-预访问的地址-地址范围：0-55
*/
public short[] readInputRegisters(ModbusMaster master,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 static void batchRead(ModbusMaster master) 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));
}
/**
* 批量读取 可以批量读取不同寄存器中数据
*/
public static void batchReadTest(ModbusMaster master,int slaveId, int offset, int dataType) throws ModbusTransportException, ErrorResponseException, ModbusInitException {
BatchRead<Integer> batch = new BatchRead<Integer>();
// BaseLocator<Number> loc = BaseLocator.holdingRegister(slaveId, offset, dataType);
// Number value = master.getValue(loc);
batch.addLocator(0, BaseLocator.holdingRegister(1, 2, DataType.TWO_BYTE_INT_SIGNED));
batch.addLocator(1, BaseLocator.inputStatus(1, 0));
batch.addLocator(2, BaseLocator.holdingRegister(slaveId, offset, dataType));
batch.setContiguousRequests(true);
BatchResults<Integer> results = master.send(batch);
System.out.println("batchRead:" + results.getValue(0));
System.out.println("batchRead:" + results.getValue(1));
System.out.println("batchRead:" + results.getValue(2));
}
/**
* 数据重组
* @param numberOfBits
* @param values
* @return
*/
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;
}
}
4. 写入类Modbus4jWriter
import com.serotonin.modbus4j.ModbusMaster;
import com.serotonin.modbus4j.exception.ErrorResponseException;
import com.serotonin.modbus4j.exception.ModbusInitException;
import com.serotonin.modbus4j.exception.ModbusTransportException;
import com.serotonin.modbus4j.locator.BaseLocator;
import com.serotonin.modbus4j.msg.*;
public class Modbus4jWriteUtils {
/**
* 写单个（线圈）开关量数据
* 功能码为：05，开关量输出点Q置位或复位，写入数据到真机的DO类型的寄存器上面，可以读写的布尔类型(0x)
* @param slaveId slave的ID
* @param writeOffset 位置-预访问的地址-地址范围：0-255
* @param writeValue 值-置位则为1，复位则为0
* @return 是否写入成功
*/
public boolean writeCoil(ModbusMaster master,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) master.send(request);
return !response.isException();
}
/**
* 写多个开关量数据（线圈）
* 功能码为：0F，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(ModbusMaster master,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) master.send(request);
return !response.isException();
}
/***
* 保持寄存器写单个
* 功能码为：06，将数据写入至V存储器， 数据到真机，数据类型是Int,可以读写的数字类型(4x)
* @param slaveId slaveId
* @param writeOffset 开始位置
* @param writeValue 写入的数据
*/
public static boolean writeRegister(ModbusMaster master,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) master.send(request);
return !response.isException();
}
/**
* 保持寄存器写入多个模拟量数据
* 功能码为：16,将数据写入至多个V存储器，写入数据到真机，数据类型是short[],可以读写的数字类型(4x)
* @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(ModbusMaster master,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) master.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
*/
public static void writeHoldingRegister(ModbusMaster master,int slaveId, int offset, Number value, int dataType)
throws ModbusTransportException, ErrorResponseException, ModbusInitException {
// 类型
BaseLocator<Number> locator = BaseLocator.holdingRegister(slaveId, offset, dataType);
master.setValue(locator, value);
}
}
标签：modbus4j,int,tcp,modbus,master,param,com,slaveId From： https://www.cnblogs.com/fangts/p/17025638.html