/// <summary>
/// Reads words input registers
/// </summary>
/// <param name="offset">The register offset</param>
/// <param name="count">Number of words to read</param>
/// <returns>The words read</returns>
public async Task <IModbusReadResponseBase> ReadInputRegistersAsync(int offset, int count, byte unit = 0x01)
{
if (tcpClient == null)
{
throw new Exception("Object not intialized");
}
var request = new ModbusRequest04(offset, count, unit);
var buffer = request.ToNetworkBuffer();
using (var cancellationTokenSource = new CancellationTokenSource(socketTimeout))
{
using (cancellationTokenSource.Token.Register(() => transportStream.Close()))
{
await transportStream.WriteAsync(buffer, 0, buffer.Length, cancellationTokenSource.Token);
}
}
var response = await ReadResponseAsync <ModbusReply04>();
return(response);
}
/// <summary>
/// Reads words input registers
/// </summary>
/// <param name="offset">The register offset</param>
/// <param name="count">Number of words to read</param>
/// <returns>The words read</returns>
public short[] ReadInputRegisters(int offset, int count, byte unit = 0x01)
{
if (tcpClient == null)
{
throw new Exception("Object not intialized");
}
var request = new ModbusRequest04(offset, count, unit);
var buffer = request.ToNetworkBuffer();
using (var cancellationTokenSource = new CancellationTokenSource(socketTimeout))
{
using (cancellationTokenSource.Token.Register(() => transportStream.Close()))
{
transportStream.Write(buffer, 0, buffer.Length);
}
}
var response = ReadResponse <ModbusReply04>();
return(ReadAsShort(response.Data));
}
/// <summary>
/// Reads floats from holding registers
/// </summary>
/// <param name="offset">The register offset</param>
/// <param name="count">Number of floats to read</param>
/// <returns>The floats read</returns>
public async Task <float[]> ReadRegistersFloatsAsync(int offset, int count, byte unitIdentifier)
{
if (tcpClient == null)
{
throw new Exception("Object not intialized");
}
// Float is 2 word (expect count x 2)
var request = new ModbusRequest04(offset, count, unitIdentifier);
var buffer = request.ToNetworkBuffer();
using (var cancellationTokenSource = new CancellationTokenSource(socketTimeout))
{
using (cancellationTokenSource.Token.Register(() => transportStream.Close()))
{
await transportStream.WriteAsync(buffer, 0, buffer.Length, cancellationTokenSource.Token);
}
}
var response = await ReadResponseAsync <ModbusReply04>();
Console.BackgroundColor = ConsoleColor.DarkGray;
Console.Write($"\n[DEBUG] Analog Input request bytes: ");
foreach (byte b in buffer)
{
Console.Write($"{b.ToString("X2")} ");
}
Console.Write($"\n[DEBUG] Analog Input response (value) bytes: ");
foreach (byte b in response.Data)
{
Console.Write($"{b.ToString("X2")} ");
}
Console.ResetColor();
return(ReadAsFloat(response.Data));
}
