/// <summary>
/// 打开连接
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void but_open_Click(object sender, EventArgs e)
{
try
{
if (txt_content.Text.Contains("小技巧"))
{
txt_content.Text = string.Empty;
}
var PortName = cb_portNameSend.Text.ToString();
var BaudRate = int.Parse(cb_baudRate.Text.ToString());
var DataBits = int.Parse(txt_dataBit.Text.ToString());
var StopBits = (StopBits)int.Parse(txt_stopBit.Text.ToString());
var parity = cb_parity.SelectedIndex == 0 ? Parity.None : (cb_parity.SelectedIndex == 1 ? Parity.Odd : Parity.Even);
client?.Close();
client = new ModbusRtuClient(PortName, BaudRate, DataBits, StopBits, parity);
var result = client.Open();
if (result.IsSucceed)
{
but_open.Enabled = false;
cb_portNameSend.Enabled = false;
but_read.Enabled = true;
but_write.Enabled = true;
but_open.Enabled = false;
but_close.Enabled = true;
but_sendData.Enabled = true;
//按了Ctrl后的鼠标点击
if ((ModifierKeys & Keys.Control) == Keys.Control)
{
Task.Run(() =>
{
AutoOpenRead();
});
}
else
{
AppendText("连接成功");
}
}
else
{
AppendText($"连接失败：{result.Err}");
}
}
catch (Exception ex)
{
MessageBox.Show(ex.Message);
}
}
public async void ServerHandlesRequestFire()
{
// Arrange
var serialPort = new FakeSerialPort();
var server = new ModbusRtuServer(unitIdentifier: 1);
server.Start(serialPort);
var client = new ModbusRtuClient();
client.Connect(serialPort);
await Task.Run(() =>
{
var data = Enumerable.Range(0, 20).Select(i => (float)i).ToArray();
var sw = Stopwatch.StartNew();
var iterations = 10000;
for (int i = 0; i < iterations; i++)
{
client.WriteMultipleRegisters(0, 0, data);
}
var timePerRequest = sw.Elapsed.TotalMilliseconds / iterations;
_logger.WriteLine($"Time per request: {timePerRequest * 1000:F0} us. Frequency: {1 / timePerRequest * 1000:F0} requests per second.");
client.Close();
});
server.Stop();
// Assert
}
private void but_sendData_Click(object sender, EventArgs e)
{
try
{
if (string.IsNullOrWhiteSpace(txt_dataPackage.Text))
{
MessageBox.Show("请输入要发送的报文");
return;
}
var dataPackageString = txt_dataPackage.Text.Replace(" ", "");
if (dataPackageString.Length % 2 != 0)
{
MessageBox.Show("请输入正确的的报文");
return;
}
var dataPackage = DataConvert.StringToByteArray(txt_dataPackage.Text?.Trim(), false);
var msg = client.SendPackage(dataPackage);
AppendText($"[请求报文]{string.Join(" ", dataPackage.Select(t => t.ToString("X2")))}\r");
AppendText($"[响应报文]{string.Join(" ", msg.Select(t => t.ToString("X2")))}\r\n");
}
catch (Exception ex)
{
MessageBox.Show(ex.Message);
client.Close();
client.Open();
}
}
public async Task 长连接主动开关()
{
client.Open();
short Number = 33;
client.Write("4", Number, stationNumber);
Assert.True(client.ReadInt16("4", stationNumber).Value == Number);
Number = 34;
client.Write("4", Number, stationNumber);
Assert.True(client.ReadInt16("4", stationNumber).Value == Number);
Number = 1;
client.Write("12", Number, stationNumber);
Assert.True(client.ReadInt16("12", stationNumber).Value == 1);
Number = 0;
client.Write("12", Number, stationNumber);
Assert.True(client.ReadInt16("12", stationNumber).Value == 0);
int numberInt32 = -12;
client.Write("4", numberInt32, stationNumber);
Assert.True(client.ReadInt32("4", stationNumber).Value == numberInt32);
float numberFloat = 112;
client.Write("4", numberFloat, stationNumber);
Assert.True(client.ReadFloat("4", stationNumber).Value == numberFloat);
double numberDouble = 32;
client.Write("4", numberDouble, stationNumber);
Assert.True(client.ReadDouble("4", stationNumber).Value == numberDouble);
client.Close();
}
static int RunDetectPorts(DetectPortsOptions opts)
{
var validPorts = new List <PortDescription>();
using (var client = new ModbusRtuClient())
{
client.BaudRate = opts.BaudRate;
client.DataBits = opts.DataBits;
client.Parity = opts.Parity;
foreach (var portDesc in SerialPortStream.GetPortDescriptions())
{
client.PortName = portDesc.Port;
if (opts.Verbose)
{
Console.Error.Write($"Trying {portDesc.Port}");
if (!string.IsNullOrEmpty(portDesc.Description))
{
Console.Out.Write($" ({portDesc.Description})");
}
Console.Out.Write("...");
}
try
{
client.Open();
}
catch (Exception exp) when(exp is UnauthorizedAccessException || exp is InvalidOperationException)
{
if (opts.Verbose)
{
Console.Error.WriteLine("already in use.");
}
continue;
}
catch (IOException)
{
if (opts.Verbose)
{
Console.Error.WriteLine("cannot open.");
}
continue;
}
try
{
client.ReadHoldingRegisters(opts.UnitAddress, 0, 1);
}
catch (TimeoutException)
{
if (opts.Verbose)
{
Console.Error.WriteLine("timeout.");
}
client.Close();
continue;
}
catch (FormatException)
{
if (opts.Verbose)
{
Console.Error.WriteLine("frame error.");
}
client.Close();
continue;
}
catch (ModbusException)
{
}
if (opts.Verbose)
{
Console.Error.WriteLine("valid.");
}
validPorts.Add(portDesc);
client.Close();
}
}
if (opts.Verbose)
{
Console.Error.WriteLine();
}
foreach (var portDesc in validPorts)
{
Console.Out.Write($"{portDesc.Port}");
if (!string.IsNullOrEmpty(portDesc.Description))
{
Console.Out.Write($" ({portDesc.Description})");
}
Console.Out.WriteLine();
}
return(0);
}
static async Task Main(string[] args)
{
/* Modbus RTU uses a COM port for communication. Therefore, to run
* this sample, you need to make sure that there are real or virtual
* COM ports available. The easiest way is to install one of the free
* COM port bridges available in the internet. That way, the Modbus
* server can connect to e.g. COM1 which is virtually linked to COM2,
* where the client is connected to.
*
* When you only want to use the client and communicate to an external
* Modbus server, simply remove all server related code parts in this
* sample and connect to real COM port using only the client.
*/
/* define COM ports */
var serverPort = "COM1";
var clientPort = "COM2";
/* prepare dependency injection */
var services = new ServiceCollection();
ConfigureServices(services);
/* create types */
var provider = services.BuildServiceProvider();
var loggerFactory = provider.GetRequiredService <ILoggerFactory>();
var serverLogger = loggerFactory.CreateLogger("Server");
var clientLogger = loggerFactory.CreateLogger("Client");
/* create Modbus RTU server and client */
var server = new ModbusRtuServer(unitIdentifier: 1);
var client = new ModbusRtuClient();
/* run Modbus RTU server */
var cts = new CancellationTokenSource();
var task_server = Task.Run(async() =>
{
server.Start(serverPort);
serverLogger.LogInformation("Server started.");
while (!cts.IsCancellationRequested)
{
// lock is required to synchronize buffer access between this application and the Modbus client
lock (server.Lock)
{
DoServerWork(server);
}
// update server buffer content once per second
await Task.Delay(TimeSpan.FromSeconds(1));
}
server.Dispose();
}, cts.Token);
/* run Modbus RTU client */
var task_client = Task.Run(() =>
{
client.Connect(clientPort);
try
{
DoClientWork(client, clientLogger);
}
catch (Exception ex)
{
clientLogger.LogError(ex.Message);
}
client.Close();
Console.WriteLine("Tests finished. Press any key to continue.");
Console.ReadKey(true);
});
// wait for client task to finish
await task_client;
// stop server
cts.Cancel();
await task_server;
server.Stop();
serverLogger.LogInformation("Server stopped.");
}
static async Task Main(string[] args)
{
/* Modbus RTU uses a COM port for communication. Therefore, to run
* this sample, you need to make sure that there are real or virtual
* COM ports available. The easiest way is to install one of the free
* COM port bridges available in the internet. That way, the Modbus
* server can connect to e.g. COM1 which is virtually linked to COM2,
* where the client is connected to.
*
* When you only want to use the client and communicate to an external
* Modbus server, simply remove all server related code parts in this
* sample and connect to real COM port using only the client.
*/
/* define COM ports */
var serverPort = "COM1";
var clientPort = "COM2";
/* create logger */
var loggerFactory = LoggerFactory.Create(loggingBuilder =>
{
loggingBuilder.SetMinimumLevel(LogLevel.Debug);
loggingBuilder.AddConsole();
});
var serverLogger = loggerFactory.CreateLogger("Server");
var clientLogger = loggerFactory.CreateLogger("Client");
/* create Modbus RTU server */
using var server = new ModbusRtuServer(unitIdentifier: 1)
{
// see 'RegistersChanged' event below
EnableRaisingEvents = true
};
/* subscribe to the 'RegistersChanged' event (in case you need it) */
server.RegistersChanged += (sender, registerAddresses) =>
{
// the variable 'registerAddresses' contains a list of modified register addresses
};
/* create Modbus RTU client */
var client = new ModbusRtuClient();
/* run Modbus RTU server */
var cts = new CancellationTokenSource();
var task_server = Task.Run(async() =>
{
server.Start(serverPort);
serverLogger.LogInformation("Server started.");
while (!cts.IsCancellationRequested)
{
// lock is required to synchronize buffer access between this application and the Modbus client
lock (server.Lock)
{
DoServerWork(server);
}
// update server register content once per second
await Task.Delay(TimeSpan.FromSeconds(1));
}
}, cts.Token);
/* run Modbus RTU client */
var task_client = Task.Run(() =>
{
client.Connect(clientPort);
try
{
DoClientWork(client, clientLogger);
}
catch (Exception ex)
{
clientLogger.LogError(ex.Message);
}
client.Close();
Console.WriteLine("Tests finished. Press any key to continue.");
Console.ReadKey(true);
});
// wait for client task to finish
await task_client;
// stop server
cts.Cancel();
await task_server;
server.Stop();
serverLogger.LogInformation("Server stopped.");
}