internal static SymbolUploadInfo readSymbolUploadInfo(IAdsConnection connection)
{
SymbolUploadInfo uploadInfo = null;
AdsErrorCode adsErrorCode = AdsSymbolLoader.loadUploadInfo(connection, TimeSpan.FromMilliseconds((double)connection.Timeout), out uploadInfo);
if (adsErrorCode != AdsErrorCode.NoError)
{
AdsErrorException ex = AdsErrorException.Create(adsErrorCode);
Module.Trace.TraceWarning("Could not load Symbol Upload info", ex);
uploadInfo = new SymbolUploadInfo();
}
return(uploadInfo);
}
public ITcAdsSymbol GetSymbol(string symbolPath, bool bLookup)
{
if (string.IsNullOrEmpty(symbolPath))
{
throw new ArgumentOutOfRangeException("name");
}
ITcAdsSymbol symbol = null;
AdsErrorCode adsErrorCode = this.TryGetSymbol(symbolPath, bLookup, out symbol);
if ((adsErrorCode != AdsErrorCode.NoError) && (adsErrorCode != AdsErrorCode.DeviceSymbolNotFound))
{
throw AdsErrorException.Create(adsErrorCode);
}
return(symbol);
}
public void StartListening()
{
List <Tag> tags = _notificationHandlesByTag.Select(t => t.Item1).ToList();
string failedTags = string.Empty;
try
{
_twinCatClient.Connect(_adsAddress, _adsPort);
_twinCatClient.Timeout = Timeout;
}
catch (AdsErrorException)
{
throw new PlcCommunicationException("Can't start listening. Connection to PLC failed.",
_adsAddress, _adsPort.ToString(CultureInfo.InvariantCulture));
}
AdsErrorException lastInnerException = null;
_notificationHandlesByTag.Clear();
foreach (Tag tag in tags)
{
try
{
int handle = _twinCatClient.AddDeviceNotification(tag.FullName(), new AdsStream(tag.BitSize == 0 ? 81 : tag.BitSize / 8), AdsTransMode.OnChange, (int)RefreshRate, 0, tag);
_notificationHandlesByTag.Add(new Tuple <Tag, int>(tag, handle));
}
catch (AdsErrorException e)
{
failedTags += tag.FullName() + "\n";
lastInnerException = e;
}
}
if (!string.IsNullOrEmpty(failedTags))
{
throw new PlcCommunicationException("Can't start listening. Some tags were not found:\n" + failedTags,
_adsAddress, _adsPort.ToString(CultureInfo.InvariantCulture), failedTags, lastInnerException);
}
}
public object ReadValue(ISymbol symbol, out DateTime utcReadTime)
{
object obj2 = null;
AdsErrorCode code = (AdsErrorCode)this.TryReadValue(symbol, out obj2, out utcReadTime);
if (code == AdsErrorCode.NoError)
{
return(obj2);
}
SymbolException ex = null;
ex = new SymbolException($"Could not read Symbol '{symbol}'! Error: {code}", symbol, AdsErrorException.Create(code));
Module.Trace.TraceError(ex);
throw ex;
}
internal void WritePrimitiveValue(string symbolPath, object value, Type managedType, AdsDatatypeId dataType, int byteSize, AdsBinaryWriter writer, int writerOffset)
{
if (string.IsNullOrEmpty(symbolPath))
{
throw new ArgumentNullException("symbolPath");
}
if (managedType == null)
{
throw new ArgumentNullException("managedType");
}
if (byteSize < 0)
{
throw new ArgumentOutOfRangeException("byteSize");
}
if (writer == null)
{
throw new ArgumentNullException("writer");
}
if (writerOffset < 0)
{
throw new ArgumentOutOfRangeException("writerOffset");
}
Type type = value.GetType();
bool flag2 = PrimitiveTypeConverter.IsPlcOpenType(value.GetType());
if (PrimitiveTypeConverter.IsPlcOpenType(managedType))
{
Type tp = null;
if (PrimitiveTypeConverter.TryGetManagedType(dataType, out tp))
{
managedType = tp;
}
else if (managedType == typeof(LTIME))
{
managedType = typeof(ulong);
dataType = AdsDatatypeId.ADST_UINT64;
}
}
if (managedType != type)
{
try
{
object obj1 = PrimitiveTypeConverter.Convert(value, managedType);
value = obj1;
}
catch (MarshalException exception)
{
throw new ArgumentException($"Cannot convert value type '{value.GetType()}' to symbol type '{managedType}'!", "value", exception);
}
}
writer.BaseStream.Position = writerOffset;
switch (dataType)
{
case AdsDatatypeId.ADST_INT16:
writer.Write((short)value);
return;
case AdsDatatypeId.ADST_INT32:
writer.Write((int)value);
return;
case AdsDatatypeId.ADST_REAL32:
writer.Write((float)value);
return;
case AdsDatatypeId.ADST_REAL64:
writer.Write((double)value);
return;
}
switch (dataType)
{
case AdsDatatypeId.ADST_INT8:
writer.Write((sbyte)value);
return;
case AdsDatatypeId.ADST_UINT8:
writer.Write((byte)value);
return;
case AdsDatatypeId.ADST_UINT16:
writer.Write((ushort)value);
return;
case AdsDatatypeId.ADST_UINT32:
writer.Write((uint)value);
return;
case AdsDatatypeId.ADST_INT64:
writer.Write((long)value);
return;
case AdsDatatypeId.ADST_UINT64:
writer.Write((ulong)value);
return;
}
switch (dataType)
{
case AdsDatatypeId.ADST_STRING:
{
int byteCount = Encoding.Default.GetByteCount("a");
long position = writer.BaseStream.Position;
int length = ((string)value).Length;
if (((length + 1) * byteCount) > byteSize)
{
throw AdsErrorException.Create(AdsErrorCode.DeviceInvalidSize);
}
writer.WritePlcAnsiString((string)value, length);
writer.BaseStream.Position = position + byteSize;
return;
}
case AdsDatatypeId.ADST_WSTRING:
{
int byteCount = Encoding.Unicode.GetByteCount("a");
long position = writer.BaseStream.Position;
int length = ((string)value).Length;
if (((length + 1) * byteCount) > byteSize)
{
throw AdsErrorException.Create(AdsErrorCode.DeviceInvalidSize);
}
writer.WritePlcUnicodeString((string)value, length);
writer.BaseStream.Position = position + byteSize;
return;
}
case AdsDatatypeId.ADST_BIT:
if ((bool)value)
{
writer.Write((byte)1);
return;
}
writer.Write((byte)0);
return;
}
throw new ArgumentException("Unexpected datatype. Cannot convert datatype of symbol to this type.", "type");
}
public override void WriteValue(ISymbol symbol, object value, out DateTime utcWriteTime)
{
if (symbol == null)
{
throw new ArgumentNullException("symbol");
}
if (value == null)
{
throw new ArgumentNullException("value");
}
int num = 0;
ISymbol symbol2 = symbol;
IDataType dataType = symbol2.DataType;
IResolvableType type2 = dataType as IResolvableType;
if (type2 != null)
{
dataType = type2.ResolveType(DataTypeResolveStrategy.AliasReference);
}
utcWriteTime = DateTime.MinValue;
if (dataType.IsBitType)
{
num = this.tryWriteValue(symbol2, BitTypeConverter.Marshal(dataType.BitSize, value), 0, out utcWriteTime);
}
else if (!symbol2.IsPrimitiveType)
{
DynamicValue value2 = (DynamicValue)value;
num = this.TryWriteValue(value2, out utcWriteTime);
}
else if (((dataType.Category == DataTypeCategory.Primitive) || (dataType.Category == DataTypeCategory.SubRange)) || (dataType.Category == DataTypeCategory.Pointer))
{
num = this.tryWriteValue(symbol2, PrimitiveTypeConverter.Default.Marshal(symbol2.DataType, value), 0, out utcWriteTime);
}
else if (dataType.Category == DataTypeCategory.String)
{
IStringType type3 = (IStringType)symbol2.DataType;
byte[] buffer3 = new PrimitiveTypeConverter(type3.Encoding).Marshal(symbol2.DataType, value);
if (buffer3.Length >= type3.Size)
{
Exception ex = new AdsErrorException($"String is too large for symbol '{symbol2.InstancePath}' (Type: {symbol2.TypeName}).", AdsErrorCode.DeviceInvalidSize);
Module.Trace.TraceError(ex);
throw ex;
}
num = this.tryWriteValue(symbol2, buffer3, 0, out utcWriteTime);
}
else if (dataType.Category == DataTypeCategory.Array)
{
IArrayType type4 = (IArrayType)symbol2.DataType;
num = this.tryWriteValue(symbol2, PrimitiveTypeConverter.Default.Marshal(symbol2.DataType, value), 0, out utcWriteTime);
}
else
{
if (dataType.Category != DataTypeCategory.Enum)
{
Exception ex = new SymbolException($"Could not write Symbol '{symbol2.InstancePath}' (Type: {symbol2.TypeName}). Category mismatch!", symbol2);
Module.Trace.TraceError(ex);
throw ex;
}
IEnumType type5 = (IEnumType)symbol2.DataType;
num = this.tryWriteValue(symbol2, PrimitiveTypeConverter.Default.Marshal(symbol2.DataType, value), 0, out utcWriteTime);
}
if (num != 0)
{
Exception ex = new SymbolException($"Could not write Symbol '{symbol2.InstancePath}' (Type: {symbol2.TypeName})! Error: {num}", symbol2);
Module.Trace.TraceError(ex);
throw ex;
}
}
