public static HashSet <ReadOperandsRequest> CreateMultiple(UnitronicsPLC plc, Dictionary <OperandType, HashSet <ushort> > operandAddresses)
{
HashSet <ReadOperandsRequest> requests = new HashSet <ReadOperandsRequest>();
ushort maximumBufferSize = (ushort)(plc.BufferSize - Response.HeaderLength - Response.FooterLength);
ReadOperandsRequest request = null;
foreach (OperandType operand in operandAddresses.Keys.OrderBy(type => (ushort)type))
{
foreach (ushort address in operandAddresses[operand].OrderBy(address => address))
{
if (request == null)
{
request = new ReadOperandsRequest(plc.UnitID);
}
else if (request.newOperandAddressFitsBuffer(operand, address, maximumBufferSize) == false)
{
requests.Add(request);
request = new ReadOperandsRequest(plc.UnitID);
}
request.addOperandAddress(plc, operand, address);
}
}
if (request != null && request.OperandRequests.Count > 0 && request.OperandRequests.Values.Any(request => request.Count > 0))
{
requests.Add(request);
}
return(requests);
}
public static ReadOperandsRequest CreateNew(UnitronicsPLC plc, OperandType type, ushort startAddress, byte length)
{
if (length > MaximumOperandsLength)
{
throw new ArgumentOutOfRangeException(nameof(length), "The Number of Operands to Read cannot be greater than the Maximum Value '" + MaximumOperandsLength + "'");
}
return(new ReadOperandsRequest(plc.UnitID, Commands.ReadOperands[type], type, startAddress, length));
}
private void addOperandAddress(UnitronicsPLC plc, OperandType type, ushort address)
{
ushort maximumAddress = plc.GetMaximumOperandAddress(type) ?? ushort.MaxValue;
if (isBitOperandType(type))
{
if (_operandRequests.ContainsKey(type) == false)
{
VectorialOperandRequest newRequest = new VectorialOperandRequest(type, address, 8);
if (newRequest.EndAddress > maximumAddress)
{
newRequest.StartAddress = (ushort)(maximumAddress - 7);
}
_operandRequests.Add(type, newRequest);
return;
}
if (_operandRequests.TryGetValue(type, out IOperandRequest genericRequest) && genericRequest is VectorialOperandRequest existingRequest)
{
if (address >= existingRequest.StartAddress && address > existingRequest.EndAddress)
{
existingRequest.Count = (ushort)(address - existingRequest.StartAddress + 1);
}
if (existingRequest.Count % 8 != 0)
{
existingRequest.Count = (ushort)(existingRequest.Count + (8 - (existingRequest.Count % 8)));
}
if (existingRequest.EndAddress > maximumAddress)
{
existingRequest.StartAddress -= (ushort)(existingRequest.EndAddress - maximumAddress);
}
}
}
else
{
if (_operandRequests.ContainsKey(type) == false)
{
_operandRequests.Add(type, new NonVectorialOperandRequest(type));
}
if (_operandRequests.TryGetValue(type, out IOperandRequest genericRequest) && genericRequest is NonVectorialOperandRequest request && request.Addresses.Contains(address) == false)
{
request.Addresses.Add(address);
}
}
}
public static HashSet <ReadOperandsRequest> CreateMultiple(UnitronicsPLC plc, Dictionary <OperandType, HashSet <ushort> > operandAddresses)
{
HashSet <ReadOperandsRequest> requests = new HashSet <ReadOperandsRequest>();
foreach (OperandType operand in operandAddresses.Keys)
{
byte operandLength = calculateOperandMessageLength(operand);
int maximumReceiveLength = plc.BufferSize - Response.STX.Length - Response.UnitIDLength - Response.CommandLength - Response.CRCLength - Response.ETXLength;
ReadOperandsRequest request = null;
foreach (ushort address in operandAddresses[operand].OrderBy(address => address))
{
if (request != null)
{
int newLength = address - request.StartAddress + 1;
if (newLength * operandLength > maximumReceiveLength || newLength > MaximumOperandsLength)
{
requests.Add(request);
request = CreateNew(plc, operand, address, 1);
}
else
{
request.Length = (byte)newLength;
}
}
else
{
request = CreateNew(plc, operand, address, 1);
}
}
if (request != null && request.Length > 0)
{
requests.Add(request);
}
}
return(requests);
}
public static ReadClockRequest CreateNew(UnitronicsPLC plc)
{
return(new ReadClockRequest(plc.UnitID, Commands.ReadClock));
}
public static GetIdentificationRequest CreateNew(UnitronicsPLC plc)
{
return(new GetIdentificationRequest(plc.UnitID, Commands.GetIdentification));
}
public static WriteOperandRequest CreateNew(UnitronicsPLC plc, OperandType type, ushort address, object value)
{
return(new WriteOperandRequest(plc.UnitID, type, address, value));
}
public static WriteClockRequest CreateNew(UnitronicsPLC plc, DateTime newDateTime)
{
return(new WriteClockRequest(plc.UnitID, Commands.GetIdentification, newDateTime));
}
