// MODBUS读保持寄存器 iAddress 开始地址(0开始),iLength 寄存器数量
//主站请求：01 03 00 00 00 06 70 08
//地址 1字节
//功能码 1字节 0x03
//起始寄存器地址 2字节 0x0000~0x0005
//寄存器数量 2字节 0x01~0x06
//CRC校验 2字节
public byte[] ReadKeepReg(int iDevAdd, long iAddress, int iLength)
{
byte[] ResByte = null;
iMWordStartAddr = iAddress;
iMWordLen = iLength;
if (comBusying == true)
{
Thread.Sleep(30);
}
byte[] SendCommand = new byte[8];
CurrentAddr = iDevAdd - 1;
SendCommand[0] = (byte)iDevAdd;
SendCommand[1] = 0x03;
SendCommand[2] = (byte)((iAddress - iAddress % 256) / 256);
SendCommand[3] = (byte)(iAddress % 256);
SendCommand[4] = (byte)((iLength - iLength % 256) / 256);
SendCommand[5] = (byte)(iLength % 256);
MmUtils.Crc16(SendCommand, 6);
SendCommand[6] = MmUtils.ucCRCLo;
SendCommand[7] = MmUtils.ucCRCHi;
try
{
//发送指令
SyncWtire(SendCommand, 0, 8);
}
catch
{
return(ResByte);
}
mReceiveByteCount = 0;
strUpData = "";
Thread.Sleep(100);
ResByte = MmUtils.HexStringToByteArray(this.strUpData);
return(ResByte);
}
//MODBUS预置双字寄存器 iAddress 开始地址(0开始)
//主站请求：01 06 00 00 00 10 70 08
//地址 1字节
//功能码 1字节 0x10
//起始寄存器地址 2字节 0x0000~0x0005
//寄存器数量 2字节 0x01~0x06
//CRC校验 2字节
public byte[] PreSetFloatKeepReg(int iDevAdd, long iAddress, float SetValue)
{
byte[] ResByte = null;
int i;
byte[] bSetValue = new byte[4];
bSetValue = BitConverter.GetBytes(SetValue);
//bSetValue = &SetValue;
iMWordStartAddr = iAddress;
//iMWordLen = 0;
if (comBusying == true)
{
Thread.Sleep(250);
}
byte[] SendCommand = new byte[13];
CurrentAddr = iDevAdd - 1;
SendCommand[0] = (byte)iDevAdd;
SendCommand[1] = 0x10;
SendCommand[2] = (byte)((iAddress - iAddress % 256) / 256);
SendCommand[3] = (byte)(iAddress % 256);
SendCommand[4] = 0x00;
SendCommand[5] = 0x02;
SendCommand[6] = 0x04;
SendCommand[7] = bSetValue[3];
SendCommand[8] = bSetValue[2];
SendCommand[9] = bSetValue[1];
SendCommand[10] = bSetValue[0];
MmUtils.Crc16(SendCommand, 11);
SendCommand[11] = ucCRCLo;
SendCommand[12] = ucCRCHi;
strUpData = "";
try
{
//发送指令。
SyncWtire(SendCommand, 0, 13);
Thread.Sleep(200);
}
catch (Exception)
{
return(ResByte);
}
mReceiveByteCount = 0;
strDownData = "";
for (i = 0; i < 13; i++)
{
strDownData = strDownData + " " + SendCommand[i].ToString("X2");
}
comBusying = true; //设置串口忙标志
bCommWell = false; //设置本次通讯标志
ResByte = MmUtils.HexStringToByteArray(this.strUpData);
return(ResByte);
}
//MODBUS读输出状态 iAddress 开始地址(0开始),iLength 寄存器数量
//主站请求：01 01 00 00 00 07 70 08
//地址 1字节
//功能码 1字节 0x01
//起始寄存器地址 2字节 0x0000~0x0005
//寄存器数量 2字节 0x01~0x06
//CRC校验 2字节
public byte[] ReadOutputStatus(int iDevAdd, long iAddress, int iLength)
{
byte[] ResByte = null;
//一个字节代表8个位状态
//一个字节代表8个位状态
if (iLength % 8 == 0)
{
iMBitLen = iLength / 8;
}
else
{
iMBitLen = iLength / 8 + 1;
}
iMBitStartAddr = iAddress;
if (comBusying == true)
{
Thread.Sleep(250);
}
byte[] SendCommand = new byte[8];
CurrentAddr = iDevAdd - 1;
SendCommand[0] = (byte)iDevAdd;
SendCommand[1] = 0x01;
SendCommand[2] = (byte)((iAddress - iAddress % 256) / 256);
SendCommand[3] = (byte)(iAddress % 256);
SendCommand[4] = (byte)((iLength - iLength % 256) / 256);
SendCommand[5] = (byte)(iLength % 256);
MmUtils.Crc16(SendCommand, 6);
SendCommand[6] = ucCRCLo;
SendCommand[7] = ucCRCHi;
try
{
//发送指令。
SyncWtire(SendCommand, 0, 8);
}
catch (Exception)
{
return(ResByte);
}
mReceiveByteCount = 0;
strUpData = "";
//strDownData = "";
//for (i = 0; i < 8; i++)
//{
// strDownData = strDownData + " " + SendCommand[i].ToString("X2");
//}
Thread.Sleep(300);
ResByte = MmUtils.HexStringToByteArray(this.strUpData);
return(ResByte);
}
//MODBUS预置单字寄存器 iAddress 开始地址(0开始),iHiValue 数据
//主站请求：01 06 00 00 00 06 70 08
//地址 1字节
//功能码 1字节 0x06
//起始寄存器地址 2字节 0x0000~0x0005
//寄存器数量 2字节 0x01~0x06
//CRC校验 2字节
public byte[] PreSetKeepReg(int iDevAdd, long iAddress, UInt16 SetValue)
{
int i;
iMWordStartAddr = iAddress;
byte[] ResByte = null;
//iMWordLen = 0;
if (comBusying == true)
{
Thread.Sleep(250);
}
byte[] SendCommand = new byte[8];
CurrentAddr = iDevAdd - 1;
SendCommand[0] = (byte)iDevAdd;
SendCommand[1] = 0x06;
SendCommand[2] = (byte)((iAddress - iAddress % 256) / 256);
SendCommand[3] = (byte)(iAddress % 256);
SendCommand[4] = (byte)((SetValue - SetValue % 256) / 256);;
SendCommand[5] = (byte)(SetValue % 256);;
MmUtils.Crc16(SendCommand, 6);
SendCommand[6] = ucCRCLo;
SendCommand[7] = ucCRCHi;
strUpData1 = "";
//发送指令。
try
{
SyncWtire(SendCommand, 0, 8);
Thread.Sleep(100);
}
catch (Exception ex)
{
return(ResByte);
}
mReceiveByteCount = 0;
strDownData = "";
for (i = 0; i < 8; i++)
{
strDownData = strDownData + " " + SendCommand[i].ToString("X2");
}
comBusying = true; //设置串口忙标志
bCommWell = false; //设置本次通讯标志
ResByte = MmUtils.HexStringToByteArray(this.strUpData);
return(ResByte);
}
//MODBUS复位单线圈 iAddress 开始地址(0开始)
//主站请求：01 05 00 00 00 00 70 08
//地址 1字节
//功能码 1字节 0x05
//起始寄存器地址 2字节 0x0000~0x0005
//寄存器数量 2字节 0x01~0x06
//CRC校验 2字节
public byte[] ForceOff(int iDevAdd, long iAddress)
{
// bool Success = true;
byte[] ResByte = null;
iMWordStartAddr = iAddress;
//iMWordLen = 0;
if (comBusying == true)
{
Thread.Sleep(250);
}
byte[] SendCommand = new byte[8];
CurrentAddr = iDevAdd - 1;
SendCommand[0] = (byte)iDevAdd;
SendCommand[1] = 0x05;
SendCommand[2] = (byte)((iAddress - iAddress % 256) / 256);
SendCommand[3] = (byte)(iAddress % 256);
SendCommand[4] = 0x00;
SendCommand[5] = 0x00;
MmUtils.Crc16(SendCommand, 6);
SendCommand[6] = ucCRCLo;
SendCommand[7] = ucCRCHi;
strUpData = "";
try
{
//发送指令。
SyncWtire(SendCommand, 0, 8);
Thread.Sleep(100);
}
catch (Exception)
{
return(ResByte);
}
mReceiveByteCount = 0;
strUpData = "";
//strDownData = "";
//for (i = 0; i < 8; i++)
//{
// strDownData = strDownData + " " + SendCommand[i].ToString("X2");
//}
comBusying = true; //设置串口忙标志
bCommWell = false; //设置本次通讯标志
ResByte = MmUtils.HexStringToByteArray(this.strUpData);
return(ResByte);
}
// MODBUS强制单线圈 iAddress 开始地址(0开始)
//主站请求：01 05 00 00 FF 00 70 08
//地址 1字节
//功能码 1字节 0x05
//起始寄存器地址 2字节 0x0000~0x0005
//寄存器数量 2字节 0x01~0x06
//CRC校验 2字节
public byte[] ForceOn(int iDevAdd, long iAddress)
{
// bool Success = true;
byte[] ResByte = null;
iMWordStartAddr = iAddress;
//iMWordLen = 0;
if (comBusying == true)
{
Thread.Sleep(250);
}
byte[] SendCommand = new byte[8];
CurrentAddr = iDevAdd - 1;
SendCommand[0] = (byte)iDevAdd;
SendCommand[1] = 0x05;
SendCommand[2] = (byte)((iAddress - iAddress % 256) / 256);
SendCommand[3] = (byte)(iAddress % 256);
SendCommand[4] = 0xff;
SendCommand[5] = 0x00;
MmUtils.Crc16(SendCommand, 6);
SendCommand[6] = ucCRCLo;
SendCommand[7] = ucCRCHi;
strUpData = "";
try
{
//发送指令。
SyncWtire(SendCommand, 0, 8);
Thread.Sleep(100);
}
catch
{
return(ResByte);
}
mReceiveByteCount = 0;
ResByte = MmUtils.HexStringToByteArray(this.strUpData);
return(ResByte);
// return Success;
}
private void MmPort_DataReceived(object sender, System.IO.Ports.SerialDataReceivedEventArgs e)
{
try
{
int i;
//循环接收数据
while (mmPort.BytesToRead > 0)
{
mReceiveByte = (byte)mmPort.ReadByte();
bData[mReceiveByteCount] = mReceiveByte;
//System.Diagnostics.Trace.WriteLine(bData[mReceiveByte].ToString());
mReceiveByteCount = mReceiveByteCount + 1;
//缓冲区溢出复位
if (mReceiveByteCount >= 1024)
{
mReceiveByteCount = 0;
mmPort.DiscardInBuffer();//清输入缓冲区
return;
}
}
updateModbusData(bData);
if (mRtuFlag == true)//RTU接受方式
{
if (mReceiveByteCount >= (iMWordLen * 2 + 5) && bData[0] == CurrentAddr + 1 && bData[1] == 0x10)
{
mTempStr = "";
for (i = 0; i < (iMWordLen * 2 + 10); i++)
{
mTempStr = mTempStr + " " + bData[i].ToString("X2");
}
strUpData = mTempStr;
mmPort.DiscardInBuffer();//清输入缓冲区
}
if (mReceiveByteCount >= (iMWordLen * 2 + 5) && bData[0] == CurrentAddr + 1 && bData[1] == 0x06)
{
mTempStr = "";
for (i = 0; i < (iMWordLen * 2 + 10); i++)
{
mTempStr = mTempStr + " " + bData[i].ToString("X2");
}
strUpData = mTempStr;
mmPort.DiscardInBuffer();//清输入缓冲区
IsReturn = true;
}
if (mReceiveByteCount >= (iMWordLen * 2 + 5) && bData[0] == CurrentAddr + 1 && bData[1] == 0x0f)
{
mTempStr = "";
for (i = 0; i < (iMWordLen * 2 + 10); i++)
{
mTempStr = mTempStr + " " + bData[i].ToString("X2");
}
strUpData = mTempStr;
mmPort.DiscardInBuffer();//清输入缓冲区
}
//输入寄存器 功能码0x04
if (mReceiveByteCount >= (iMWordLen * 2 + 5) && bData[0] == CurrentAddr + 1 && bData[1] == 0x05)
{
mTempStr = "";
for (i = 0; i < (iMWordLen * 2 + 14); i++)
{
mTempStr = mTempStr + " " + bData[i].ToString("X2");
}
strUpData = mTempStr;
mmPort.DiscardInBuffer();//清输入缓冲区
}
//输入寄存器 功能码0x04
if (mReceiveByteCount >= (iMWordLen * 2 + 5) && bData[0] == CurrentAddr + 1 && bData[1] == 0x04)
{
mTempStr = "";
for (i = 0; i < (iMWordLen * 2 + 5); i++)
{
mTempStr = mTempStr + " " + bData[i].ToString("X2");
}
strUpData = mTempStr;
mmPort.DiscardInBuffer();//清输入缓冲区
}
//保持寄存器 功能码0x03
if (mReceiveByteCount >= (iMWordLen * 2 + 5) && bData[0] == CurrentAddr + 1 && bData[1] == 0x03)
{
// bUpData = bData;
mTempStr = "";
for (i = 0; i < (iMWordLen * 2 + 5); i++)
{
mTempStr = mTempStr + " " + bData[i].ToString("X2");
}
strUpData = mTempStr;
//赋值给全局MW变量 从起始地址开始
int nDownPos;
nDownPos = 0;
for (i = 0; i < iMWordLen; i++)
{
MWordVaue[CurrentAddr, nDownPos] = (UInt16)(bData[3 + 2 * i] * 256 + bData[3 + 2 * i + 1]);
nDownPos = nDownPos + 1;
}
strUpData = mTempStr;
mmPort.DiscardInBuffer();//清输入缓冲区
}
//输出线圈 功能码0x01
if (mReceiveByteCount >= (iMBitLen + 5) && bData[0] == CurrentAddr + 1 && bData[1] == 0x01)
{
mTempStr = "";
for (i = 0; i < (iMBitLen + 5); i++)
{
mTempStr = mTempStr + " " + bData[i].ToString("X2");
}
//赋值给全局变量
for (i = 0; i < bData[2]; i++)
{
MmUtils.ByteToBArray(bData[3 + i], CurrentAddr, i * 8);
}
strUpData = mTempStr;
mmPort.DiscardInBuffer();//清输入缓冲区
}
//输入线圈 功能码0x02
if (mReceiveByteCount >= (iMBitLen + 5) && bData[0] == CurrentAddr + 1 && bData[1] == 0x02)
{
mTempStr = "";
for (i = 0; i < (iMBitLen + 5); i++)
{
mTempStr = mTempStr + " " + bData[i].ToString("X2");
}
strUpData = mTempStr;
mmPort.DiscardInBuffer();//清输入缓冲区
}
}
else //ASCII协议解析
{
//保持寄存器 功能码0x03
string strTmpAddr, strTmpFun;
strTmpAddr = System.Text.Encoding.ASCII.GetString(bData, 1, 2);
strTmpFun = System.Text.Encoding.ASCII.GetString(bData, 3, 2);
if (bData[0] == ':' && mReceiveByteCount >= (iMWordLen * 4 + 11) && strTmpAddr == (CurrentAddr + 1).ToString("X2") && strTmpFun == "03")
{
mTempStr = System.Text.Encoding.ASCII.GetString(bData, 0, iMWordLen * 4 + 11);
//赋值给全局MW变量 从起始地址开始
int nDownPos;
nDownPos = 0;
byte bTmpHi, bTmpLo;
string tmpData;
for (i = 0; i < iMWordLen; i++)
{
tmpData = System.Text.Encoding.ASCII.GetString(bData, 7 + i * 4, 2);
bTmpHi = Convert.ToByte(tmpData, 16);
tmpData = System.Text.Encoding.ASCII.GetString(bData, 9 + i * 4, 2);
bTmpLo = Convert.ToByte(tmpData, 16);
MWordVaue[CurrentAddr, nDownPos] = (UInt16)(bTmpHi * 256 + bTmpLo);
nDownPos = nDownPos + 1;
}
strUpData = mTempStr;
mmPort.DiscardInBuffer();//清输入缓冲区
}
//输入寄存器04
if (bData[0] == ':' && mReceiveByteCount >= (iMWordLen * 4 + 11) && strTmpAddr == (CurrentAddr + 1).ToString("X2") && strTmpFun == "04")
{
mTempStr = System.Text.Encoding.ASCII.GetString(bData, 0, iMWordLen * 4 + 11);
strUpData = mTempStr;
mmPort.DiscardInBuffer();//清输入缓冲区
}
//输出线圈 功能码0x01
if (bData[0] == ':' && mReceiveByteCount >= (iMBitLen * 2 + 11) && strTmpAddr == (CurrentAddr + 1).ToString("X2") && strTmpFun == "01")
{
byte bDataValue;
string tmpData;
mTempStr = "";
mTempStr = System.Text.Encoding.ASCII.GetString(bData, 0, iMBitLen * 2 + 11);
//赋值给全局变量
for (i = 0; i < iMBitLen; i++)
{
tmpData = System.Text.Encoding.ASCII.GetString(bData, 7 + i * 2, 2);
bDataValue = Convert.ToByte(tmpData, 16);
MmUtils.ByteToBArray(bDataValue, CurrentAddr, i * 8);
}
strUpData = mTempStr;
mmPort.DiscardInBuffer();//清输入缓冲区
}
//输入线圈 功能码0x02
if (bData[0] == ':' && mReceiveByteCount >= (iMBitLen * 2 + 11) && strTmpAddr == (CurrentAddr + 1).ToString("X2") && strTmpFun == "02")
{
//byte bDataValue;
//string tmpData;
mTempStr = "";
mTempStr = System.Text.Encoding.ASCII.GetString(bData, 0, iMBitLen * 2 + 11);
strUpData = mTempStr;
mmPort.DiscardInBuffer();//清输入缓冲区
}
}
// updateModbusData( MmUtils.HexStringToByteArray(strUpData));
}
catch (Exception ex)
{
strErrMsg = ex.Message.ToString();
}
}