static int RunRead3(Read3Options opts)
{
using (var client = new ModbusRtuClient())
{
client.PortName = opts.PortName;
client.BaudRate = opts.BaudRate;
client.DataBits = opts.DataBits;
client.Parity = opts.Parity;
if (!OpenPort(client))
{
return(1);
}
ushort[] values;
try
{
values = client.ReadHoldingRegisters(opts.UnitAddress, opts.RegisterAddress, opts.RegisterCount);
}
catch (Exception exp)
{
return(HandleException(exp));
}
for (int i = 0; i < values.Length; i++)
{
Console.Out.Write("0x");
Console.Out.Write(values[i].ToString("X4"));
Console.Out.Write(" ");
Console.Out.WriteLine(values[i].ToString("####0"));
}
return(0);
}
}
static void DoClientWork(ModbusRtuClient client, ILogger logger)
{
Span <byte> data;
var sleepTime = TimeSpan.FromMilliseconds(100);
var unitIdentifier = (byte)0x01;
var startingAddress = (ushort)0;
var registerAddress = (ushort)0;
// ReadHoldingRegisters = 0x03, // FC03
data = client.ReadHoldingRegisters(unitIdentifier, startingAddress, 10);
logger.LogInformation("FC03 - ReadHoldingRegisters: Done");
Thread.Sleep(sleepTime);
// WriteMultipleRegisters = 0x10, // FC16
client.WriteMultipleRegisters(unitIdentifier, startingAddress, new byte[] { 10, 00, 20, 00, 30, 00, 255, 00, 255, 01 });
logger.LogInformation("FC16 - WriteMultipleRegisters: Done");
Thread.Sleep(sleepTime);
// ReadCoils = 0x01, // FC01
data = client.ReadCoils(unitIdentifier, startingAddress, 10);
logger.LogInformation("FC01 - ReadCoils: Done");
Thread.Sleep(sleepTime);
// ReadDiscreteInputs = 0x02, // FC02
data = client.ReadDiscreteInputs(unitIdentifier, startingAddress, 10);
logger.LogInformation("FC02 - ReadDiscreteInputs: Done");
Thread.Sleep(sleepTime);
// ReadInputRegisters = 0x04, // FC04
data = client.ReadInputRegisters(unitIdentifier, startingAddress, 10);
logger.LogInformation("FC04 - ReadInputRegisters: Done");
Thread.Sleep(sleepTime);
// WriteSingleCoil = 0x05, // FC05
client.WriteSingleCoil(unitIdentifier, registerAddress, true);
logger.LogInformation("FC05 - WriteSingleCoil: Done");
Thread.Sleep(sleepTime);
// WriteSingleRegister = 0x06, // FC06
client.WriteSingleRegister(unitIdentifier, registerAddress, new byte[] { 65, 67 });
logger.LogInformation("FC06 - WriteSingleRegister: Done");
}
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);
}