public async Task DatapoolReadOpcWriteAsync(OpcDatapoolModel dataModel, UaTcpSessionChannel channel)
{
// Read the Thermo tag value and write to the OPC Server
DataValue value;
switch (dataModel.TagInfo.Type)
{
case Thermo.Datapool.Datapool.dpTypes.FLOAT:
value = new DataValue(new Variant(dataModel.TagInfo.AsDouble), sourceTimestamp: DateTime.Now, serverTimestamp: DateTime.Now);
break;
case Thermo.Datapool.Datapool.dpTypes.INT:
value = new DataValue(new Variant(dataModel.TagInfo.AsInt), sourceTimestamp: DateTime.Now);
break;
case Thermo.Datapool.Datapool.dpTypes.STRING:
value = new DataValue(new Variant(dataModel.TagInfo.AsString), sourceTimestamp: DateTime.Now);
break;
case Thermo.Datapool.Datapool.dpTypes.BOOL:
value = new DataValue(new Variant(dataModel.TagInfo.AsBoolean), sourceTimestamp: DateTime.Now);
break;
default:
throw new InvalidCastException($"Cannot write {dataModel.TagInfo.Type} data type to OPC.");
}
var writeRequest = new WriteRequest {
NodesToWrite = new WriteValue[] { new WriteValue {
NodeId = dataModel.NodeId, Value = value, AttributeId = AttributeIds.Value
} }
};
var response = await channel.WriteAsync(writeRequest);
}
public void OpcReadDatapoolWrite(OpcDatapoolModel dataModel)
{
// Read the OPC Server value and write it to the associated datapool tag
switch (dataModel.OpcValue.Variant.Type)
{
case VariantType.Boolean:
dataModel.TagInfo.Write((bool)dataModel.OpcValue.Value, dataModel.OpcValue.ServerTimestamp, 0);
break;
case VariantType.Int16:
dataModel.TagInfo.Write((int)dataModel.OpcValue.Value, dataModel.OpcValue.ServerTimestamp, 0);
break;
case VariantType.UInt16:
dataModel.TagInfo.Write((int)dataModel.OpcValue.Value, dataModel.OpcValue.ServerTimestamp, 0);
break;
case VariantType.Int32:
dataModel.TagInfo.Write((int)dataModel.OpcValue.Value, dataModel.OpcValue.ServerTimestamp, 0);
break;
case VariantType.UInt32:
dataModel.TagInfo.Write((int)dataModel.OpcValue.Value, dataModel.OpcValue.ServerTimestamp, 0);
break;
case VariantType.Int64:
dataModel.TagInfo.Write((int)dataModel.OpcValue.Value, dataModel.OpcValue.ServerTimestamp, 0);
break;
case VariantType.UInt64:
dataModel.TagInfo.Write((int)dataModel.OpcValue.Value, dataModel.OpcValue.ServerTimestamp, 0);
break;
case VariantType.Float:
dataModel.TagInfo.Write((double)dataModel.OpcValue.Value, dataModel.OpcValue.ServerTimestamp, 0);
break;
case VariantType.Double:
dataModel.TagInfo.Write((double)dataModel.OpcValue.Value, dataModel.OpcValue.ServerTimestamp, 0);
break;
case VariantType.String:
dataModel.TagInfo.Write((string)dataModel.OpcValue.Value, dataModel.OpcValue.ServerTimestamp, 0);
break;
default:
throw new InvalidCastException($"Cannot write {dataModel.OpcValue.Variant.Type.ToString()} data type to Thermo Datapool.");
}
}
