Modbus4jUtils.java
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package com.huaheng.api.dianqi;
import com.serotonin.modbus4j.BatchRead;
import com.serotonin.modbus4j.BatchResults;
import com.serotonin.modbus4j.ModbusFactory;
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.ip.IpParameters;
import com.serotonin.modbus4j.locator.BaseLocator;
/**
* modbus通讯工具类,采用modbus4j实现
* @author lxq
* @dependencies modbus4j-3.0.3.jar
* @website https://github.com/infiniteautomation/modbus4j
*/
public class Modbus4jUtils {
/**
* 工厂。
*/
static ModbusFactory modbusFactory;
static {
if (modbusFactory == null) {
modbusFactory = new ModbusFactory();
}
}
/**
* 获取master
* @return
* @throws ModbusInitException
*/
public static ModbusMaster getMaster() throws ModbusInitException {
IpParameters params = new IpParameters();
params.setHost("localhost");
params.setPort(502);
// modbusFactory.createRtuMaster(wapper); //RTU 协议
// modbusFactory.createUdpMaster(params);//UDP 协议
// modbusFactory.createAsciiMaster(wrapper);//ASCII 协议
ModbusMaster master = modbusFactory.createTcpMaster(params, false);// TCP 协议
master.init();
return master;
}
/**
* 读取线圈 功能码01 [01 Coil Status 0x]类型 开关数据 true/false
* @param slaveId 从站地址
* @param offset 偏移量
* @return 读取值 true/false
*/
public static Boolean readCoilStatus(int slaveId, int offset) throws ModbusTransportException, ErrorResponseException, ModbusInitException {
BaseLocator<Boolean> loc = BaseLocator.coilStatus(slaveId, offset);
Boolean value = getMaster().getValue(loc);
return value;
}
/**
* 读取离散量 功能码02 [02 Input Status 1x]类型 开关数据 true/false
* @param slaveId 从站地址
* @param offset 偏移量
* @return 读取值 true/false
*/
public static Boolean readInputStatus(int slaveId, int offset) throws ModbusTransportException, ErrorResponseException, ModbusInitException {
// 02 Input Status
BaseLocator<Boolean> loc = BaseLocator.inputStatus(slaveId, offset);
Boolean value = getMaster().getValue(loc);
return value;
}
/**
* 读取保持寄存器 功能码03 [03 Holding Register类型 2x] 模拟量数据
*
* @param slaveId 从站地址
* @param offset 偏移量
* @param dataType 数据类型,来自com.serotonin.modbus4j.code.DataType
* @return 返回结果
*/
public static Number readHoldingRegister(int slaveId, int offset, int dataType) throws ModbusTransportException, ErrorResponseException, ModbusInitException {
BaseLocator<Number> loc = BaseLocator.holdingRegister(slaveId, offset, dataType);
Number value = getMaster().getValue(loc);
return value;
}
/**
* 读取输入寄存器 功能码04 [04 Input Registers 3x]类型 模拟量数据
* @param slaveId 从站地址
* @param offset 偏移量
* @param dataType 数据类型,来自com.serotonin.modbus4j.code.DataType
* @return 返回结果
*/
public static Number readInputRegisters(int slaveId, int offset, int dataType) throws ModbusTransportException, ErrorResponseException, ModbusInitException {
BaseLocator<Number> loc = BaseLocator.inputRegister(slaveId, offset, dataType);
Number value = getMaster().getValue(loc);
return value;
}
/**
* 批量读取使用方法
*/
public static void batchRead() throws ModbusTransportException, ErrorResponseException, ModbusInitException {
BatchRead<Integer> batch = new BatchRead<Integer>();
//slaveId 从站地址 offset 偏移量 DataType.FOUR_BYTE_FLOAT 读取四个字节的float类型
batch.addLocator(0, BaseLocator.holdingRegister(1, 0, DataType.FOUR_BYTE_FLOAT));
batch.addLocator(1, BaseLocator.inputStatus(1, 5));
ModbusMaster master = getMaster();
batch.setContiguousRequests(false);
BatchResults<Integer> results = master.send(batch);
System.out.println(results.getValue(0));
System.out.println(results.getValue(1));
}
/**
* 测试
*
* @param args
*/
public static void main(String[] args) {
try {
// 读线圈 从站地址1 偏移量 0 1 6 三个
Boolean v011 = readCoilStatus(1, 0);
Boolean v012 = readCoilStatus(1, 1);
Boolean v013 = readCoilStatus(1, 6);
System.out.println("v011:" + v011);
System.out.println("v012:" + v012);
System.out.println("v013:" + v013);
// 读偏移量 从站地址1 偏移量 0 1 2 三个
Boolean v021 = readInputStatus(1, 0);
Boolean v022 = readInputStatus(1, 1);
Boolean v023 = readInputStatus(1, 2);
System.out.println("v021:" + v021);
System.out.println("v022:" + v022);
System.out.println("v023:" + v023);
// 读保持寄存器 从站地址1 偏移量 0 1 类型四个字节的float类型
Number v031 = readHoldingRegister(1, 0, DataType.FOUR_BYTE_FLOAT);// 注意,float
Number v032 = readHoldingRegister(1, 1, DataType.FOUR_BYTE_FLOAT);// 同上
System.out.println("v031:" + v031);
System.out.println("v032:" + v032);
// 读输入寄存器 类型两个字节的int无符号
Number v041 = readInputRegisters(1, 0, DataType.TWO_BYTE_INT_SIGNED);//
Number v042 = readInputRegisters(1, 2, DataType.FOUR_BYTE_FLOAT);//
System.out.println("v041:" + v041);
System.out.println("v042:" + v042);
// 批量读取
batchRead();
} catch (Exception e) {
e.printStackTrace();
}
}
}