public int WriteMultipleRegister(int id, int startAddress, byte[] values)
{
int len = values.Length;
if (len % 2 > 0)
{
len++;
}
byte[] data = new byte[len + 9];
data[0] = (byte)id; // Slave id high byte Slave address
data[1] = Modbus.fctWriteMultipleRegister; // Function code function code
byte[] _adr = BitConverter.GetBytes((short)startAddress);
data[2] = _adr[1]; // Start address Start address high eight
data[3] = _adr[0]; // Start address The lower eight bits of the start address
byte[] _length = BitConverter.GetBytes((short)(len >> 1));
data[4] = _length[1]; // Number of data to read The upper eight bits of the number of registers
data[5] = _length[0]; // Number of data to read The lower eight registers
data[6] = (byte)len; //Bytes
Array.Copy(values, 0, data, 7, len); //Add change data to data
byte[] arr = Utility.CalculateCrc(data, len + 7);
data[len + 7] = arr[0]; //The lower eight bits of CRC check
data[len + 8] = arr[1]; //The high eight bits of CRC check
lock (_async)
{
_serialPort.Write(data, 0, data.Length);
int numBytesRead = 0;
var frameBytes = new byte[5];
while (numBytesRead != frameBytes.Length)
{
numBytesRead += _serialPort.Read(frameBytes, numBytesRead, frameBytes.Length - numBytesRead);
}
var slave = frameBytes[0];
var code = frameBytes[1];
if (code == 0x85)//Errors only need to read 5 bytes
{
var errorcode = frameBytes[2];
if (OnError != null)
{
OnError(this, new IOErrorEventArgs(Modbus.GetErrorString(errorcode)));
}
Thread.Sleep(10);
return(-1);
}
else//8 bytes is required
{
numBytesRead = 0;
while (numBytesRead < 3)
{
numBytesRead += _serialPort.Read(frameBytes, numBytesRead, 3 - numBytesRead);
}
Thread.Sleep(10);
return(0);
}
}
}
public int WriteMultipleRegister(int id, int startAddress, byte[] values)
{
int len = values.Length;
if (len % 2 > 0)
{
len++;
}
byte[] data = new byte[len + 9];
data[0] = (byte)id; // Slave id high byte 从站地址
data[1] = Modbus.fctWriteMultipleRegister; // Function code 功能码
byte[] _adr = BitConverter.GetBytes((short)startAddress);
data[2] = _adr[1]; // Start address 开始地址高八位
data[3] = _adr[0]; // Start address 开始地址低八位
byte[] _length = BitConverter.GetBytes((short)(len >> 1));
data[4] = _length[1]; // Number of data to read 寄存器数量高八位
data[5] = _length[0]; // Number of data to read 寄存器数量低八位
data[6] = (byte)len; //字节数
Array.Copy(values, 0, data, 7, len); //把变更数据加入data中
byte[] arr = Utility.CalculateCrc(data, len + 7);
data[len + 7] = arr[0]; //crc校验的低八位
data[len + 8] = arr[1]; //CRC校验的高八位
lock (_async)
{
_serialPort.Write(data, 0, data.Length);
int numBytesRead = 0;
var frameBytes = new byte[5];
while (numBytesRead != frameBytes.Length)
{
numBytesRead += _serialPort.Read(frameBytes, numBytesRead, frameBytes.Length - numBytesRead);
}
var slave = frameBytes[0];
var code = frameBytes[1];
if (code == 0x85)//错误则只需读5字节
{
var errorcode = frameBytes[2];
if (OnError != null)
{
OnError(this, new IOErrorEventArgs(Modbus.GetErrorString(errorcode)));
}
Thread.Sleep(10);
return(-1);
}
else//正确需8字节
{
numBytesRead = 0;
while (numBytesRead < 3)
{
numBytesRead += _serialPort.Read(frameBytes, numBytesRead, 3 - numBytesRead);
}
Thread.Sleep(10);
return(0);
}
}
}
internal void CallException(int id, byte function, byte exception)
{
if (tcpSynCl == null)
{
return;
}
if (OnError != null)
{
OnError(this, new IOErrorEventArgs(Modbus.GetErrorString(exception)));
}
}
public int WriteSingleCoils(int id, int startAddress, bool OnOff)
{
byte[] data = new byte[8];
data[0] = (byte)id; // Slave id high byte
data[1] = Modbus.fctWriteSingleCoil; // Function code
byte[] _adr = BitConverter.GetBytes((short)startAddress);
data[2] = _adr[1]; // Start address
data[3] = _adr[0]; // Start address
if (OnOff)
{
data[4] = 0xFF;
}
byte[] arr = Utility.CalculateCrc(data, 6);
data[6] = arr[0];
data[7] = arr[1];
lock (_async)
{
_serialPort.Write(data, 0, data.Length);
int numBytesRead = 0;
var frameBytes = new byte[5];
while (numBytesRead != frameBytes.Length)
{
numBytesRead += _serialPort.Read(frameBytes, numBytesRead, frameBytes.Length - numBytesRead);
}
var slave = frameBytes[0];
var code = frameBytes[1];
if (code == 0x85)//错误则只需读5字节
{
var errorcode = frameBytes[2];
if (OnError != null)
{
OnError(this, new IOErrorEventArgs(Modbus.GetErrorString(errorcode)));
}
Thread.Sleep(10);
return(-1);
}
else//正确需8字节
{
numBytesRead = 0;
while (numBytesRead < 3)
{
numBytesRead += _serialPort.Read(frameBytes, numBytesRead, 3 - numBytesRead);
}
Thread.Sleep(10);
return(0);
}
}
}
internal void CallException(int id, byte function, byte exception)
{
if (tcpSynCl == null)
{
return;
}
//主动断开连接准备重连
if (exception == Modbus.excExceptionConnectionLost)
{
tcpSynCl.Close();
}
if (OnError != null)
{
OnError(this, new IOErrorEventArgs(Modbus.GetErrorString(exception)));
}
}
public int WriteSingleRegister(int id, int startAddress, byte[] values)
{
byte[] data = new byte[8];
data[0] = (byte)id; // Slave id high byte Slave address High eight
data[1] = Modbus.fctWriteSingleRegister; // Function code function code
byte[] _adr = BitConverter.GetBytes((short)startAddress);
data[2] = _adr[1]; // Start address Start address high eight
data[3] = _adr[0]; // Start address Start address high eight
data[4] = values[1]; //Change the high bit of the data
data[5] = values[0]; //Change the low bit of data
byte[] arr = Utility.CalculateCrc(data, 6);
data[6] = arr[0]; //The lower eight bits of the CRC check code
data[7] = arr[1]; //The upper eight bits of the CRC check code
lock (_async)
{
_serialPort.Write(data, 0, data.Length);
int numBytesRead = 0;
var frameBytes = new byte[5];
while (numBytesRead != frameBytes.Length)
{
numBytesRead += _serialPort.Read(frameBytes, numBytesRead, frameBytes.Length - numBytesRead);
}
var slave = frameBytes[0];
var code = frameBytes[1];
if (code == 0x85)//Errors only need to read 5 bytes
{
var errorcode = frameBytes[2];
if (OnError != null)
{
OnError(this, new IOErrorEventArgs(Modbus.GetErrorString(errorcode)));
}
Thread.Sleep(10);
return(-1);
}
else//8 bytes is required
{
numBytesRead = 0;
while (numBytesRead < 3)
{
numBytesRead += _serialPort.Read(frameBytes, numBytesRead, 3 - numBytesRead);
}
Thread.Sleep(10);
return(0);
}
}
}
public int WriteSingleRegister(int id, int startAddress, byte[] values)
{
byte[] data = new byte[8];
data[0] = (byte)id; // Slave id high byte 从站地址高八位
data[1] = Modbus.fctWriteSingleRegister; // Function code 功能码
byte[] _adr = BitConverter.GetBytes((short)startAddress);
data[2] = _adr[1]; // Start address 开始地址高八位
data[3] = _adr[0]; // Start address 开始地址高八位
data[4] = values[1]; //变更数据的高位
data[5] = values[0]; //变更数据的低位
byte[] arr = Utility.CalculateCrc(data, 6);
data[6] = arr[0]; //CRC校验码低八位
data[7] = arr[1]; //CRC校验码高八位
lock (_async)
{
_serialPort.Write(data, 0, data.Length);
int numBytesRead = 0;
var frameBytes = new byte[5];
while (numBytesRead != frameBytes.Length)
{
numBytesRead += _serialPort.Read(frameBytes, numBytesRead, frameBytes.Length - numBytesRead);
}
var slave = frameBytes[0];
var code = frameBytes[1];
if (code == 0x85)//错误则只需读5字节
{
var errorcode = frameBytes[2];
if (OnError != null)
{
OnError(this, new IOErrorEventArgs(Modbus.GetErrorString(errorcode)));
}
return(-1);
}
else//正确需8字节
{
numBytesRead = 0;
while (numBytesRead < 3)
{
numBytesRead += _serialPort.Read(frameBytes, numBytesRead, 3 - numBytesRead);
}
return(0);
}
}
}
