private void btnOpen_Click(object sender, EventArgs e)
{
if (ModbusTool.SetComm(cmbCom.SelectedItem.ToString(), int.Parse(cmbBaud.SelectedItem.ToString()), int.Parse(cmbDataBit.SelectedItem.ToString()), cmbParity.SelectedIndex, cmbStopBit.SelectedIndex) == nOK)
{
btnOpen.Enabled = false;
btnClose.Enabled = true;
}
else
{
MessageBox.Show("设置失败！");
}
}
private void btnReadInputRegister_Click(object sender, EventArgs e)
{
if (!ModbusTool.bConnect)
{
MessageBox.Show("请先打开串口!");
return;
}
txtWrong.Text = "";
string strData = "";
try
{
ushort startAddress;
try
{
startAddress = Convert.ToUInt16(txtStartAddr.Text, 16);
}
catch (Exception)
{
MessageBox.Show("请输入正确的起始地址！");
return;
}
ushort numofPoints;
bool isValid = ushort.TryParse(txtAmount.Text, out numofPoints);
if (isValid == false)
{
MessageBox.Show("请输入正确的数量！");
return;
}
ushort[] register = ModbusTool.ReadInputRegisters(startAddress, numofPoints);
//for (int i = 0; i < numofPoints; i++)
//{
// strData = strData + "," + register[i].ToString();
//}
StringBuilder sb = new StringBuilder();
for (int i = 0; i < numofPoints; i++)
{
sb.Append(register[i].ToString("X4"));
if ((i + 1) % 2 == 0)
{
sb.Append(" ");
}
}
txtRead.Text = sb.ToString();
}
catch (Exception ex)
{
string str = ex.Message;
txtWrong.Text = ex.ToString();
}
}
private void btnWriteRegisters_Click(object sender, EventArgs e)
{
if (!ModbusTool.bConnect)
{
MessageBox.Show("请先打开串口!");
return;
}
txtWrong.Text = "";
try
{
String str = txtWrite.Text.ToString();
String data = str.Replace(" ", "");
if (data.Length % 4 != 0)
{
data = "000" + data;
}
int dataCount = data.Length / 4;
int[] arr = new int[dataCount];
ushort[] uArr = new ushort[dataCount];
for (int i = dataCount; i > 0; i--)
{
uArr[dataCount - i] = (Convert.ToUInt16(data.Substring(data.Length - 4 * i, 4), 16));
}
//for (int i = 0; i < dataCount; i++)
//{
// Buffer.BlockCopy(arr, 4 * i, uArr, 4 * i, 4);
//}
//List<ushort> listData = new List<ushort>();
ushort startAddress;
try
{
startAddress = Convert.ToUInt16(txtStartAddr.Text, 16);
}
catch (Exception)
{
MessageBox.Show("请输入正确的起始地址！");
return;
}
ModbusTool.WriteMultipleRegisters(startAddress, uArr);
}
catch (Exception ex)
{
string str = ex.Message;
txtWrong.Text = ex.ToString();
}
}
private void btnReadHoldingRegister_Click(object sender, EventArgs e)
{
if (!ModbusTool.bConnect)
{
MessageBox.Show("请先打开串口!");
return;
}
txtWrong.Text = "";
string strData = "";
try
{
ushort startAddress;
try
{
startAddress = Convert.ToUInt16(txtStartAddr.Text, 16);
}
catch (Exception)
{
MessageBox.Show("请输入正确的起始地址！");
return;
}
ushort numofPoints;
bool isValid = ushort.TryParse(txtAmount.Text, out numofPoints);
if (isValid == false)
{
MessageBox.Show("请输入正确的数量！");
return;
}
ushort[] register = ModbusTool.ReadHoldingRegisters(startAddress, numofPoints);
//for (int i = 0; i < numofPoints; i++)
//{
// strData = strData + register[i].ToString() + " ";
//}
StringBuilder sb = new StringBuilder();
for (int i = 0; i < numofPoints; i++)
{
sb.Append(register[i].ToString("X4"));
if ((i + 1) % 2 == 0)
{
sb.Append(" ");
}
}
txtRead.Text = sb.ToString();
}
catch (Exception ex)
{
//Connection exception
//No response from server.
//The server maybe close the com port, or response timeout.
if (ex.Source.Equals("System"))
{
txtWrong.Text = DateTime.Now.ToString() + " " + ex.Message;
}
//The server return error code.
//You can get the function code and exception code.
if (ex.Source.Equals("Modbus"))
{
string str = ex.Message;
int FunctionCode;
string ExceptionCode;
str = str.Remove(0, str.IndexOf("\r\n") + 17);
FunctionCode = Convert.ToInt16(str.Remove(str.IndexOf("\r\n")));
Console.WriteLine("Function Code: " + FunctionCode.ToString("X"));
str = str.Remove(0, str.IndexOf("\r\n") + 17);
ExceptionCode = str.Remove(str.IndexOf("-"));
switch (ExceptionCode.Trim())
{
case "1":
txtWrong.Text = "Exception Code: " + ExceptionCode.Trim() + "----> Illegal function!";
break;
case "2":
txtWrong.Text = "Exception Code: " + ExceptionCode.Trim() + "----> Illegal data address!";
break;
case "3":
txtWrong.Text = "Exception Code: " + ExceptionCode.Trim() + "----> Illegal data value!";
break;
case "4":
txtWrong.Text = "Exception Code: " + ExceptionCode.Trim() + "----> Slave device failure!";
break;
default:
txtWrong.Text = "Exception Code: " + ExceptionCode.Trim() + "----> Read failure!";
break;
}
}
}
}
private void btnSetAddress_Click(object sender, EventArgs e)
{
ModbusTool.SetAddress(byte.Parse(txtDeviceAddr.Text));
}
private void cmbCom_SelectedIndexChanged(object sender, EventArgs e)
{
ModbusTool.CloseComm();
btnOpen.Enabled = true;
btnClose.Enabled = false;
}
private void btnClose_Click(object sender, EventArgs e)
{
ModbusTool.CloseComm();
btnOpen.Enabled = true;
btnClose.Enabled = false;
}
//发送一行数据，一行内容中包括地址和数据，如果不选择“第一列为地址”，则地址也作为数据发送
private int SendLine(int nLineId, bool bModbus, bool bWithAddress, bool bHex)
{
string address = ltStrAddress[nLineId - 1].Replace(" ", "");
String str = "";
String data = "";
if (ltStr.Count >= nLineId)
{
str = ltStr[nLineId - 1].Replace(" ", "");
}
if (bWithAddress)
{
data = str;
}
else
{
data = address + str; //如果不选择“第一列为地址”，则地址也作为数据发送
}
if (bModbus)
{
if (data.Length % 2 != 0)
{
data = "0" + data;
}
if (data.Length % 4 != 0) //发送以字为单位，即ushort
{
data = "00" + data;
}
int dataCount = (data.Length) / 2;
ushort[] uArr = new ushort[dataCount / 2];
string subStr;
for (int i = 0; i < dataCount / 2; i++)
{
subStr = data.Substring(4 * i, 4);
uArr[i] = Convert.ToUInt16(subStr, 16);
}
ushort startAddress = 0;
if (bWithAddress)
{
try
{
startAddress = Convert.ToUInt16(address, 16);
}
catch (Exception)
{
return(2);
}
}
else
{
startAddress = RegisterAddress;
}
ModbusTool.WriteMultipleRegisters(startAddress, uArr);
if (txtSend.Text.Length > 1000000)
{
txtSend.Text = "";
}
if (bShowSend)
{
if (bWithAddress)
{
data = address + "," + data;
}
txtSend.AppendText(data + "\r\n");
txtSend.ScrollToCaret();
}
}
else //如果不是Modbus才考虑是否16进制发送
{
if (!bHex) //ASCII码发送Excel中内容
{
if (data.Length > 0)
{
ModbusTool.serialPort.Write(data);
if (txtSend.Text.Length > 1000000)
{
txtSend.Text = "";
}
if (bShowSend)
{
txtSend.AppendText(data + "\r\n");
txtSend.ScrollToCaret();
}
}
}
else
{
byte[] arr = null;
try
{
arr = StrToHexByte(data);
}
catch (Exception)
{
return(1);
}
if (data.Length > 0)
{
ModbusTool.SendAny(arr, 0, arr.Length);
if (txtSend.Text.Length > 1000000)
{
txtSend.Text = "";
}
if (bShowSend)
{
txtSend.AppendText(data + "\r\n");
txtSend.ScrollToCaret();
}
}
}
}
return(0);
}
