/// <summary>
/// Reads contiguous block of holding registers.
/// </summary>
/// <param name="slaveAddress">Address of device to read values from.</param>
/// <param name="startAddress">Address to begin reading.</param>
/// <param name="numberOfPoints">Number of holding registers to read.</param>
/// <returns>Holding registers status</returns>
public ushort[] ReadHoldingRegisters(byte slaveAddress, ushort startAddress, ushort numberOfPoints, byte registerSize)
{
ValidateNumberOfPoints("numberOfPoints", numberOfPoints, 125);
switch (registerSize)
{
case 4:
var request = new ReadHoldingInputRegistersRequest32(
Modbus.ReadHoldingRegisters,
slaveAddress,
startAddress,
numberOfPoints);
return(PerformReadRegisters(request));
break;
default:
return(ReadHoldingRegisters(slaveAddress, startAddress, numberOfPoints));
break;
}
}
/// <summary>
/// Asynchronously reads contiguous block of holding registers.
/// </summary>
/// <param name="slaveAddress">Address of device to read values from.</param>
/// <param name="startAddress">Address to begin reading.</param>
/// <param name="numberOfPoints">Number of holding registers to read.</param>
/// <returns>A task that represents the asynchronous read operation</returns>
public Task <ushort[]> ReadHoldingRegistersAsync(byte slaveAddress, ushort startAddress, ushort numberOfPoints, byte registerSize)
{
ValidateNumberOfPoints("numberOfPoints", numberOfPoints, 125);
ReadHoldingInputRegistersRequest request;
switch (registerSize)
{
case 4:
request = new ReadHoldingInputRegistersRequest32(
Modbus.ReadHoldingRegisters,
slaveAddress,
startAddress,
numberOfPoints);
return(PerformReadRegistersAsync(request));
default:
request = new ReadHoldingInputRegistersRequest(
Modbus.ReadHoldingRegisters,
slaveAddress,
startAddress,
numberOfPoints);
return(PerformReadRegistersAsync(request));
}
}
