modbusj例子

package com.modbus;import java.nio.ByteBuffer;import com.serotonin.modbus4j.ModbusFactory; import com.serotonin.modbus4j.ModbusMaster; importcom.serotonin.modbus4j.exception.ModbusInitExcept ion;importcom.serotonin.modbus4j.exception.ModbusTransportE xception;import com.serotonin.modbus4j.ip.IpParameters; import com.serotonin.modbus4j.msg.ModbusRequest; import com.serotonin.modbus4j.msg.ModbusResponse;importcom.serotonin.modbus4j.msg.ReadHoldingRegistersRe quest;importcom.serotonin.modbus4j.msg.WriteRegistersRequest; importcom.serotonin.modbus4j.msg.WriteRegistersResponse ;import com.serotonin.util.queue.ByteQueue;/*** modbus 处理类* @author ?**/public class ModbusHandler {static ModbusFactory modbusFactory;static {if (modbusFactory == null) {modbusFactory = new ModbusFactory();}}/*** 得到 WriteRegistersRequest** @param ip* @param port* @param slaveId* @param start* @param values*/public static WriteRegistersRequest getWriteRegistersRequest(int slaveId,int start, short[] values) {WriteRegistersRequest request = null;try {request = newWriteRegistersRequest(slaveId, start, values);} catch (ModbusTransportException e) {e.printStackTrace();}return request;}/*** 得到 WriteRegistersRequest** @param ip* @param port* @param slaveId* @param start* @param values*/public static WriteRegistersResponse getWriteRegistersResponse(ModbusMaster tcpMaster, WriteRegistersRequest request) {WriteRegistersResponse response = null;try {response = (WriteRegistersResponse) tcpMaster.send(request);} catch (ModbusTransportException e) {e.printStackTrace();}return response;}/*** 写入** @param ip* @param port* @param slaveId* @param start* @param values*/public static int modbusWTCP(String ip, int port, int slaveId, int start,short[] values) {ModbusMaster tcpMaster = getTcpMaster(ip, port, slaveId);if (tcpMaster == null){System.out.println("tcpMaster is null ");return 0;}tcpMaster = initTcpMaster(tcpMaster);WriteRegistersRequest request = getWriteRegistersRequest(slaveId,start, values);WriteRegistersResponse response = getWriteRegistersResponse(tcpMaster,request);if (response.isException()) {return 0;} else {return 1;}}/*** 初始化?tcpMaster** @param tcpMaster* @return*/public static ModbusMaster initTcpMaster(ModbusMaster tcpMaster) { if (tcpMaster == null)return null;try {tcpMaster.init();return tcpMaster;} catch (ModbusInitException e) { return null;}}/*** 得到 ModbusRequest** @param salveId* @param start* @param readLenth* @param tcpMaster*/public static ModbusRequest getRequest(int salveId, int start,int readLenth, ModbusMaster tcpMaster) { ModbusRequest modbusRequest = null;try {modbusRequest = new ReadHoldingRegistersRequest(salveId,start,readLenth);return modbusRequest;} catch (ModbusTransportException e) {e.printStackTrace();return null;}}/*** 得到 ModbusResponse** @param salveId* @param start* @param readLenth* @param tcpMaster*/public static ModbusResponse getModbusResponse(ModbusMaster tcpMaster,ModbusRequest request) {ModbusResponse modbusResponse = null;try {modbusResponse = tcpMaster.send(request);return modbusResponse;} catch (ModbusTransportException e) {e.printStackTrace();return null;}}/*** 获取设备数据* @param ip* 信息机地址ip* @param port* 端口默认端口502* @param salveId* 从站地址* @param start* 数据报文的起始位置* @param readLenth* 读取的长度* @return结果*/public static ByteQueue modbusRTCP(String ip, int port, int salveId,int start, int readLenth) {ModbusMaster tcpMaster = getTcpMaster(ip, port, salveId);// 得到tcpMasterif (tcpMaster == null){System.out.println("tcpMaster is null ");return null;}return modbusRTCP0(ip, port, salveId, start, readLenth, tcpMaster);}/*** 获取 tcp master** @param ip* @param port* @param salveId*/public static ModbusMaster getTcpMaster(String ip, int port, int salveId) {IpParameters params = new IpParameters();params.setHost(ip);// 设置ipif(port == 0)params.setPort(502);// 设置端口，默认为502else params.setPort(port);ModbusMaster tcpMaster =modbusFactory.createTcpMaster(params, true);// 获取ModbusMaster对象return tcpMaster;}/*** modbus 读取** @param ip* @param port* @param salveId* @param start* @param readLenth* @param tcpMaster* @return*/public static ByteQueue modbusRTCP0(String ip, int port, int salveId,int start, int readLenth, ModbusMaster tcpMaster) {if (tcpMaster == null){System.out.println("tcpMaster is null");return null;}tcpMaster = initTcpMaster(tcpMaster);// 初始化tcpmasterif (tcpMaster == null){System.out.println("tcpMaster is null");return null;}ModbusRequest modbusRequest =getRequest(salveId, start, readLenth,tcpMaster);// 得到requst 对象if (modbusRequest == null){System.out.println("request is null");return null;}ModbusResponse response = getModbusResponse(tcpMaster, modbusRequest);// 发送请求，得到ResponseByteQueue byteQueue = new ByteQueue(12);response.write(byteQueue);System.out.println("功能" + modbusRequest.getFunctionCode());System.out.println("从站地址:" + modbusRequest.getSlaveId());System.out.println("收到的响应信息大小" + byteQueue.size());System.out.println("收到的响应信息小:" + byteQueue);return byteQueue;}/* ** Convert byte[] to hex* string.这里我们可以将byte转换成int，然后利用Integer.toHexString(int)来转换成16进制字符串 * @param src byte[] data* @return hex string*/public static String bytesToHexString(byte[] src) {StringBuilder stringBuilder = new StringBuilder("");if (src == null || src.length <= 0) {return null;}for (int i = 0; i < src.length; i++) {int v = src[i] & 0xFF;String hv = Integer.toHexString(v);if (hv.length() < 2) {stringBuilder.append(0);}stringBuilder.append(hv);}return stringBuilder.toString();}/**************************************************** *** 起始位置15,响应数据：从站|data包含的传感器个数|data length|data*************************************************** **** @param bq*/public static void ansisByteQueue(ByteQueue bq) {byte[] result = bq.peekAll();System.out.println("从站地址==="+ result[0]);System.out.println("data 个数===" +result[1]);System.out.println("data 长度===" +result[2]);byte[] temp = null;ByteBuffer buffer = ByteBuffer.wrap(result, 3, result.length - 3);//直接获取 datawhile (buffer.hasRemaining()) {temp = new byte[2];buffer.get(temp, 0, temp.length);System.out.print(Integer.parseInt(bytesToHexSt ring(temp), 16)+" ");}}public static void main(String[] args) { ByteQueue result =ModbusHandler.modbusRTCP("169.254.48.188", 502, 2, 15, 3);ansisByteQueue(result);short[] shor = new short[1];shor[0] = 0x33;ModbusHandler.modbusWTCP("169.254.48.188", 502, 2, 15, shor);}}。