public override ModbusFunction ReadInputRegisters(ReadInputRegistersRequest request)
{
var registers = ReadRegisters(request.Quantity);
var response = new ReadInputRegistersResponse(registers);
return(response);
}
public void ReadInputRegistersRequestToString()
{
// Arrange
var request = new ReadInputRegistersRequest(5, 1, 10);
// Act/Assert
Assert.Equal("Read 10 input registers starting at address 1 from slave 5", request.ToString());
}
public async Task <ushort[]> ReadInputRegistersAsync(byte slaveAddress, ushort startAddress, ushort numberOfPoints, CancellationToken token = default)
{
ValidateNumberOfPoints(numberOfPoints, 125);
var request = new ReadInputRegistersRequest(slaveAddress, startAddress, numberOfPoints);
var response = await Transport.SendAsync <ReadInputRegistersResponse>(request, token).ConfigureAwait(false);
return(response.Data);
}
public void ReadInputRegisters(ushort?unitId, ref List <InputRegister> inputRegisters, bool?isExtendedUnitId)
{
if (!RegisterListIsContiguous(inputRegisters))
{
throw new Exception("Register list must be contiguous and contain no duplicates.");
}
var request = new ReadInputRegistersRequest(unitId.HasValue ? unitId.Value : UnitId, inputRegisters, isExtendedUnitId.HasValue ? isExtendedUnitId.Value : UseExtendedAddressing);
var response = Transport.UnicastMessage <ReadInputRegistersResponse>(request);
inputRegisters = response.InputRegisters;
}
public async Task <ReadRegistersResult> ReadInputRegistersAsync(ushort startAddress, ushort length, CancellationToken cancellationToken)
{
lock (_isInitializedLock)
{
if (_isInitialized == false)
{
throw new ModbusException("This Modbus RTU Device must be Initialized first before any Requests can be Processed");
}
}
if (startAddress > MaximumAddress)
{
throw new ArgumentOutOfRangeException(nameof(startAddress), "The Start Address is greater than the Maximum Allowed Value of '" + MaximumAddress + "'");
}
if (length == 0)
{
throw new ArgumentOutOfRangeException(nameof(length), "The Length cannot be Zero");
}
if (length > MaximumRegistersReadLength)
{
throw new ArgumentOutOfRangeException(nameof(length), "The Length is greater than the Maximum Allowed Value of '" + MaximumRegistersReadLength + "'");
}
ReadInputRegistersRequest request = ReadInputRegistersRequest.CreateNew(this, startAddress, length);
ProcessRequestResult requestResult = await _channel.ProcessRequestAsync(request, _timeout, _retries, _delayBetweenMessages, cancellationToken);
return(new ReadRegistersResult
{
BytesSent = requestResult.BytesSent,
PacketsSent = requestResult.PacketsSent,
BytesReceived = requestResult.BytesReceived,
PacketsReceived = requestResult.PacketsReceived,
Duration = requestResult.Duration,
Values = ReadInputRegistersResponse.ExtractValues(request, requestResult.Response),
});
}
internal static short[] ExtractValues(ReadInputRegistersRequest request, RTUResponse response)
{
if (response.Data.Length < 1)
{
throw new RTUException("The Response Data Length was too short to extract the Byte Count");
}
int expectedByteCount = request.Length * 2;
if (response.Data[0] != expectedByteCount)
{
throw new RTUException("The Response Byte Count '" + response.Data[0].ToString() + "' did not match the Expected Byte Count '" + expectedByteCount.ToString() + "'");
}
if (response.Data.Length < expectedByteCount + 1)
{
throw new RTUException("The Response Data Length of '" + response.Data.Length.ToString() + "' was too short - Expecting a Length of '" + (expectedByteCount + 1).ToString() + "'");
}
if (request.Length == 0)
{
return(new short[0]);
}
Memory <byte> bytes = response.Data.AsMemory().Slice(1, expectedByteCount);
List <short> values = new List <short>();
for (int i = 0; i < bytes.Length; i += 2)
{
Span <byte> valueBytes = bytes.Slice(i, 2).Span;
valueBytes.Reverse();
values.Add(BitConverter.ToInt16(valueBytes));
}
return(values.ToArray());
}
public ReadInputRegistersResponse ReadInputRegisters(ushort startingAddress, ushort quantity)
{
var function = new ReadInputRegistersRequest(startingAddress, quantity);
return(CallModbusFunctionSync <ReadInputRegistersResponse>(function));
}
public ushort ReadInputRegistersAsync(ushort startingAddress, ushort quantity)
{
var function = new ReadInputRegistersRequest(startingAddress, quantity);
return(CallModbusFunction(function));
}
public abstract ModbusFunction ReadInputRegisters(ReadInputRegistersRequest request);
static void TestMessage()
{
ModbusMessage fc01Req = new ReadCoilsRequest(0x13, 0x13);
ModbusMessage fc01Res = new ReadCoilsResponse(true, false, true, true, false, false, true, true, true, true, false, true, false, true, true, false, true, false, true, false);
ModbusMessage fc02Req = new ReadDiscreteInputsRequest(0xc4, 0x16);
ModbusMessage fc02Res = new ReadDiscreteInputsResponse(false, false, true, true, false, true, false, true, true, true, false, true, true, false, true, true, true, false, true, false, true, true);
ModbusMessage fc03Req = new ReadHoldingRegistersRequest(0x6b, 0x03);
ModbusMessage fc03Res = new ReadHoldingRegistersResponse(0x022b, 0x0000, 0x0064);
ModbusMessage fc04Req = new ReadInputRegistersRequest(0x08, 0x01);
ModbusMessage fc04Res = new ReadInputRegistersResponse(0x000a);
ModbusMessage fc05Req = new WriteSingleCoilRequest(0xac, true);
ModbusMessage fc05Res = new WriteSingleCoilResponse(0xac, true);
ModbusMessage fc06Req = new WriteSingleRegisterRequest(0x01, 0x0003);
ModbusMessage fc06Res = new WriteSingleRegisterResponse(0x01, 0x0003);
ModbusMessage fc0fReq = new WriteMultipleCoilsRequest(0x13, true, false, true, true, false, false, true, true, true, false);
ModbusMessage fc0fRes = new WriteMultipleCoilsResponse(0x13, 0x0a);
ModbusMessage fc10Req = new WriteMultipleRegistersRequest(0x01, 0x000a, 0x0102);
ModbusMessage fc10Res = new WriteMultipleRegistersResponse(0x01, 0x02);
PrintMessagePDU(fc01Req);
PrintMessagePDU(fc01Res);
PrintMessagePDU(fc02Req);
PrintMessagePDU(fc02Res);
PrintMessagePDU(fc03Req);
PrintMessagePDU(fc03Res);
PrintMessagePDU(fc04Req);
PrintMessagePDU(fc04Res);
PrintMessagePDU(fc05Req);
PrintMessagePDU(fc05Res);
PrintMessagePDU(fc06Req);
PrintMessagePDU(fc06Res);
PrintMessagePDU(fc0fReq);
PrintMessagePDU(fc0fRes);
PrintMessagePDU(fc10Req);
PrintMessagePDU(fc10Res);
Assert(MessagePDU(fc01Req) == "Req.: 01 00 13 00 13", $"{nameof(fc01Req)} Fail");
Assert(MessagePDU(fc01Res) == "Res.: 01 03 cd 6b 05", $"{nameof(fc01Res)} Fail");
Assert(MessagePDU(fc02Req) == "Req.: 02 00 c4 00 16", $"{nameof(fc02Req)} Fail");
Assert(MessagePDU(fc02Res) == "Res.: 02 03 ac db 35", $"{nameof(fc02Res)} Fail");
Assert(MessagePDU(fc03Req) == "Req.: 03 00 6b 00 03", $"{nameof(fc03Req)} Fail");
Assert(MessagePDU(fc03Res) == "Res.: 03 06 02 2b 00 00 00 64", $"{nameof(fc03Res)} Fail");
Assert(MessagePDU(fc04Req) == "Req.: 04 00 08 00 01", $"{nameof(fc04Req)} Fail");
Assert(MessagePDU(fc04Res) == "Res.: 04 02 00 0a", $"{nameof(fc04Res)} Fail");
Assert(MessagePDU(fc05Req) == "Req.: 05 00 ac ff 00", $"{nameof(fc05Req)} Fail");
Assert(MessagePDU(fc05Res) == "Res.: 05 00 ac ff 00", $"{nameof(fc05Res)} Fail");
Assert(MessagePDU(fc06Req) == "Req.: 06 00 01 00 03", $"{nameof(fc06Req)} Fail");
Assert(MessagePDU(fc06Res) == "Res.: 06 00 01 00 03", $"{nameof(fc06Res)} Fail");
Assert(MessagePDU(fc0fReq) == "Req.: 0f 00 13 00 0a 02 cd 01", $"{nameof(fc0fReq)} Fail");
Assert(MessagePDU(fc0fRes) == "Res.: 0f 00 13 00 0a", $"{nameof(fc0fRes)} Fail");
Assert(MessagePDU(fc10Req) == "Req.: 10 00 01 00 02 04 00 0a 01 02", $"{nameof(fc10Req)} Fail");
Assert(MessagePDU(fc10Res) == "Res.: 10 00 01 00 02", $"{nameof(fc10Res)} Fail");
Assert(fc01Req.FunctionCode == (FunctionCode)0x01);
Assert(fc01Res.FunctionCode == (FunctionCode)0x01);
Assert(fc02Req.FunctionCode == (FunctionCode)0x02);
Assert(fc02Res.FunctionCode == (FunctionCode)0x02);
Assert(fc03Req.FunctionCode == (FunctionCode)0x03);
Assert(fc03Res.FunctionCode == (FunctionCode)0x03);
Assert(fc04Req.FunctionCode == (FunctionCode)0x04);
Assert(fc04Res.FunctionCode == (FunctionCode)0x04);
Assert(fc05Req.FunctionCode == (FunctionCode)0x05);
Assert(fc05Res.FunctionCode == (FunctionCode)0x05);
Assert(fc06Req.FunctionCode == (FunctionCode)0x06);
Assert(fc06Res.FunctionCode == (FunctionCode)0x06);
Assert(fc0fReq.FunctionCode == (FunctionCode)0x0f);
Assert(fc0fRes.FunctionCode == (FunctionCode)0x0f);
Assert(fc10Req.FunctionCode == (FunctionCode)0x10);
Assert(fc10Res.FunctionCode == (FunctionCode)0x10);
}
