C# C语言中Modbus串口数据读取#
嗨,我正在尝试读取串行端口数据。我使用NModbus库进行modbus通信。代码可以很好地用于读写目的。但有时我会遇到一些未知错误,我想查看串口活动。我尝试使用C# C语言中Modbus串口数据读取#,c#,forms,serial-port,modbus,C#,Forms,Serial Port,Modbus,嗨,我正在尝试读取串行端口数据。我使用NModbus库进行modbus通信。代码可以很好地用于读写目的。但有时我会遇到一些未知错误,我想查看串口活动。我尝试使用SerialDataReceivedEventHandler,但我没有从端口获得任何信息,但仍然能够读取保持寄存器的值。这是我的密码。我只想看到通过串行端口发送/接收的数据包 namespace ModbusMaster { public partial class Form1 : Form { publ
SerialDataReceivedEventHandler
,但我没有从端口获得任何信息,但仍然能够读取保持寄存器的值。这是我的密码。我只想看到通过串行端口发送/接收的数据包
namespace ModbusMaster
{
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
this.Load += Form1_Load;
}
void Form1_Load(object sender, EventArgs e)
{
int[] baud = new int[] {4800,9600,19200,38400,57600,115200};
int[] databit = new int[] { 7, 8 };
int[] stpBits = new int[] { 1, 2 };
string[] party = new string[] { "None", "Odd", "Even" };
string[] Mode = new string[] { "ASCII", "RTU" };
ModbusMode.DataSource = Mode;
Baud_Rate.DataSource = baud;
Data.DataSource = databit;
Stop.DataSource = stpBits;
Pari.DataSource = party;
GetPortList();
}
private void button1_Click(object sender, EventArgs e)
{
string ProtocolMode = ModbusMode.GetItemText(ModbusMode.SelectedItem);
string portName = listBox1.GetItemText(listBox1.SelectedItem);
if (listBox1.SelectedIndex == -1)
{
MessageBox.Show("Please select Serial Port!!!");
}
else
{
using ( SerialPort port = new SerialPort(portName))
{
if (port != null && port.IsOpen)
{
port.Close();
}
// configure serial port
port.BaudRate = int.Parse(Baud_Rate.Text);
port.DataBits = int.Parse(Data.Text);
port.Parity = (Parity)Enum.Parse(typeof(Parity), Pari.Text);
port.StopBits = (StopBits)Enum.Parse(typeof(StopBits), Stop.Text);
port.DataReceived += new SerialDataReceivedEventHandler(port_DataReceived);
port.Open();
// create modbus master
if (ProtocolMode == "RTU")
{
IModbusSerialMaster master = ModbusSerialMaster.CreateRtu(port);
int temp = ushort.Parse(StrtAdd.Text)- 1;
byte slaveId = byte.Parse(Slave.Text);
ushort startAddress = (ushort)(temp);
ushort points = ushort.Parse(regis.Text);
ushort[] holding_register = new ushort[] { };
holding_register = master.ReadHoldingRegisters(slaveId, startAddress, points);
string tempString = " ";
foreach (ushort value in holding_register)
{
tempString += value + " ";
}
val.Text = tempString;
// val.Text = Convert.ToString(holding_register[0] + " " + holding_register[1]);
}
if (ProtocolMode == "ASCII")
{
IModbusSerialMaster master = ModbusSerialMaster.CreateAscii(port);
int temp = ushort.Parse(StrtAdd.Text)- 1;
byte slaveId = byte.Parse(Slave.Text);
ushort startAddress = (ushort)(temp);
ushort points = ushort.Parse(regis.Text);
ushort[] holding_register = new ushort[] { };
holding_register = master.ReadHoldingRegisters(slaveId, startAddress, points);
string tempString = " ";
foreach (ushort value in holding_register)
{
tempString += value + " ";
}
}
}
}
}
private void port_DataReceived(object sender, SerialDataReceivedEventArgs e)
{
// Show all the incoming data in the port's buffer
SerialPort sp = (SerialPort)sender;
string indata = sp.ReadExisting();
RcdPacket.Text = indata;
}
private void GetPortList()
{
listBox1.Items.Clear();
foreach (string item in System.IO.Ports.SerialPort.GetPortNames())
{
//store the each retrieved available prot names into the Listbox...
listBox1.Items.Add(item);
}
}
private void WriteData_Click(object sender, EventArgs e)
{
string ProtocolMode = ModbusMode.GetItemText(ModbusMode.SelectedItem);
string portName1 = listBox1.GetItemText(listBox1.SelectedItem);
if (listBox1.SelectedIndex == -1)
{
MessageBox.Show("Please select Serial Port!!!");
}
else
{
using (SerialPort port1 = new SerialPort(portName1))
{
if (port1 != null && port1.IsOpen)
{
port1.Close();
}
port1.BaudRate = int.Parse(Baud_Rate.Text);
port1.DataBits = int.Parse(Data.Text);
port1.Parity = (Parity)Enum.Parse(typeof(Parity), Pari.Text);
port1.StopBits = (StopBits)Enum.Parse(typeof(StopBits), Stop.Text);
if (ProtocolMode == "RTU")
{
port1.Open();
IModbusSerialMaster master1 = ModbusSerialMaster.CreateRtu(port1);
int temp = ushort.Parse(WriteAdd.Text) - 1;
byte slaveId = byte.Parse(SlvIdd.Text);
ushort startAdd = (ushort)(temp);
ushort WrValue = ushort.Parse(WriteVal.Text);
master1.WriteSingleRegister(slaveId, startAdd, WrValue);
}
if (ProtocolMode == "ASCII")
{
port1.Open();
IModbusSerialMaster master1 = ModbusSerialMaster.CreateAscii(port1);
int temp = ushort.Parse(WriteAdd.Text) - 1;
byte slaveId = byte.Parse(SlvIdd.Text);
ushort startAdd = (ushort)(temp);
ushort WrValue = ushort.Parse(WriteVal.Text);
master1.WriteSingleRegister(slaveId, startAdd, WrValue);
}
}
}
}
}
}
如果您只是想查看流量,我建议您使用Sysinternals。如果您只想查看我建议从sysinternal使用的流量,这还可以保证您看到的实际上是端口上接收到的流量。这也保证了您所看到的实际上是在端口上接收到的内容问题是我想显示通信量以及来自传入数据包的解码数据。问题是我想显示通信量以及来自传入数据包的解码数据。