package com.modbus.data;
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import java.nio.ByteBuffer;
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import java.nio.ByteOrder;
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public class BaseData {
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public static final int ReadByteCount = 12;
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public static final int SINGLEWRITE_BYTECOUNT = 6;
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public int transsend; //发送事务标识符
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public int transreceive; //接收事务标识符
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public int protocolident; //协议标识符
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public int datacount; //数据长度[本字节下一个到最后]
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public int unitident = 0x02; //单元标识符[当前单元固定为2]
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public int funcode; //功能码
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public int addrstart; //寄存器起始地址
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public int regcount; //寄存器数量
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public int bytecount; //数据区字节数量
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public byte[] data; //数据区数据
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public BaseData() {
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}
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public BaseData(int cmd_code,int regstart,int regcount) {
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this.funcode = cmd_code;
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this.addrstart = regstart;
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this.regcount = regcount;
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}
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/**
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* 构造发送数据
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* @param cmd_code 命令码
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* @param addrstart 寄存器起始地址
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* @param regcount 寄存器数量
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* @return
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*/
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public byte[] createReadData() {
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ByteBuffer bf = ByteBuffer.allocate(ReadByteCount);
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bf.order(ByteOrder.BIG_ENDIAN);
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bf.putShort(ComBase.changeIntToShort(addrstart)); //接收标识 将寄存器起始地址放在标识中[2个字节]
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bf.putShort(ComBase.changeIntToShort(0x0000)); //协议标识符
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bf.putShort(ComBase.changeIntToShort(0x0006)); //下面字节长度
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bf.put(ComBase.changeIntToByte(unitident)); //单元标识符(设备ID)
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bf.put(ComBase.changeIntToByte(funcode)); //功能码
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bf.putShort(ComBase.changeIntToShort(addrstart)); //寄存器起始地址
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bf.putShort(ComBase.changeIntToShort(regcount));
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bf.flip();
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byte[] databyte = new byte[ReadByteCount];
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bf.get(databyte);
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return databyte;
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}
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/*
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* 保持寄存器单点输入
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* */
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public byte[] createSingleResWiriteData(byte[] data) {
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ByteBuffer bf = ByteBuffer.allocate(ReadByteCount+regcount*2+1);
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bf.order(ByteOrder.BIG_ENDIAN);
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bf.putShort(ComBase.changeIntToShort(addrstart)); //接收标识 将寄存器起始地址放在标识中[2个字节]
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bf.putShort(ComBase.changeIntToShort(0x0000)); //协议标识符
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bf.putShort(ComBase.changeIntToShort(4+regcount*2)); //下面字节长度
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bf.put(ComBase.changeIntToByte(unitident)); //单元标识符(设备ID)
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bf.put(ComBase.changeIntToByte(funcode)); //功能码
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bf.putShort(ComBase.changeIntToShort(addrstart)); //寄存器起始地址
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bf.put(data); //目标值
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bf.flip();
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byte[] databyte = new byte[bf.limit()];
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bf.get(databyte);
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//System.out.println(ComFn.bytesToHexString(databyte, databyte.length));
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return databyte;
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}
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/**
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* 构造单点写入数据
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* @param value
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* @return
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*/
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public byte[] createSingleCollWiriteData(byte[] data) {
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ByteBuffer bf = ByteBuffer.allocate(ReadByteCount+regcount*2+1);
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bf.order(ByteOrder.BIG_ENDIAN);
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bf.putShort(ComBase.changeIntToShort(addrstart)); //接收标识 将寄存器起始地址放在标识中[2个字节]
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bf.putShort(ComBase.changeIntToShort(0x0000)); //协议标识符
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bf.putShort(ComBase.changeIntToShort(4+regcount*2)); //下面字节长度
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bf.put(ComBase.changeIntToByte(unitident)); //单元标识符(设备ID)
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bf.put(ComBase.changeIntToByte(funcode)); //功能码
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bf.putShort(ComBase.changeIntToShort(addrstart)); //寄存器起始地址
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bf.put(data); //目标值
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bf.flip();
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byte[] databyte = new byte[bf.limit()];
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bf.get(databyte);
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//System.out.println(ComFn.bytesToHexString(databyte, databyte.length));
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return databyte;
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}
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/**
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* 构造多点写入数据
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* @param value
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* @return
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*/
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public byte[] createWiriteData(byte[] data) {
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ByteBuffer bf = ByteBuffer.allocate(ReadByteCount+regcount*2+1);
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bf.order(ByteOrder.BIG_ENDIAN);
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bf.putShort(ComBase.changeIntToShort(addrstart)); //接收标识 将寄存器起始地址放在标识中[2个字节]
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bf.putShort(ComBase.changeIntToShort(0x0000)); //协议标识符
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bf.putShort(ComBase.changeIntToShort(7+regcount*2)); //下面字节长度
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bf.put(ComBase.changeIntToByte(unitident)); //单元标识符(设备ID)
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bf.put(ComBase.changeIntToByte(funcode)); //功能码
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bf.putShort(ComBase.changeIntToShort(addrstart)); //寄存器起始地址
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bf.putShort(ComBase.changeIntToShort(regcount)); //寄存器数量
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bf.put(ComBase.changeIntToByte(regcount*2)); //写字节数量
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bf.put(data); //目标值
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bf.flip();
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byte[] databyte = new byte[bf.limit()];
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bf.get(databyte);
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return databyte;
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}
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/**
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* 构造按钮控制数据
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* @return
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*/
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public static byte[] createButtonByte(int value) {
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if(value==1){
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value=0xff00;
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}else{
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value=0x0000;
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}
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ByteBuffer bf = ByteBuffer.allocate(2);
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bf.order(ByteOrder.BIG_ENDIAN);
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bf.putShort(ComBase.changeIntToShort(value));
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bf.flip();
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byte[] b = new byte[2];
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bf.get(b);
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return b;
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}
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/**
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* 构造写入多个寄存器数据
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* @param value
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* @return
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*/
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public static byte[] createFloatByte(float value) {
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ByteBuffer bf = ByteBuffer.allocate(4);
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bf.order(ByteOrder.BIG_ENDIAN);
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bf.putFloat(value);
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bf.flip();
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byte[] b = new byte[4];
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bf.get(b);
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return b;
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}
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/**
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* 构造写入多个寄存器数据
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* @param value
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* @return
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*/
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public static byte[] createIntByte(int value) {
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ByteBuffer bf = ByteBuffer.allocate(2);
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bf.order(ByteOrder.BIG_ENDIAN);
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bf.putShort(ComBase.changeIntToShort(value));
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bf.flip();
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byte[] b = new byte[2];
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bf.get(b);
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return b;
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}
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/**
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*
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* @return
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*/
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public boolean putByteBuffer(ByteBuffer bf) {
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ByteBuffer tmpbuf = bf;
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if(tmpbuf.limit() < 8) {
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return false;
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}
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tmpbuf.position(0);
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transsend = ComBase.changeShortToInt(bf.getShort());
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protocolident = ComBase.changeShortToInt(bf.getShort());
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datacount = ComBase.changeShortToInt(bf.getShort());
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unitident = ComBase.changeByteToInt(bf.get());
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addrstart = transsend;
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if(unitident != 0x02) {
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return false;
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}
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funcode = ComBase.changeByteToInt(bf.get());
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return true;
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}
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}
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