public Task WriteTag(Tag tag, object value)
{
if (tag.Value == null && value == null)
{
return(Task.FromResult(true));
}
var task = _writeTaskScheduler.Schedule(() =>
{
tag.LockValue();
try
{
tag.DetectDataTypeForValue(value);
var item = new Item(tag.FullName(), 1);
Result result;
_device.Write(item, value, out result);
if (!result.IsOK)
{
throw new PlcCommunicationException("Can't write value to ControlLogix.",
_device.RoutePath, result.EvArgs.Message);
}
}
finally
{
tag.ReleaseValue();
}
});
return(task);
}
protected virtual void TryStartNextJob()
{
RemoveJobsScheduler.Schedule(RemoveCompletedAndInvalidJobs);
var job = GetUnstartedJobs().FirstOrDefault();
if (job == null)
{
return;
}
EventAggregator.Publish(new TryStartJobEvent(job.JobId));
Logger.DebugFormat("Job counts: unstarted={0}, ongoing={1}, completed={2}",
GetUnstartedJobs().Count(), GetJobsInProduction().Count(), GetCompletedJobs().Count());
StartJobScheduler.Schedule(TryStartNextJob);
}
public void RecalculateRoute()
{
Scheduler.Schedule(DoRecalculateRoute);
}
public Task WriteTag(Tag tag, object value)
{
if (tag.Value == null && value == null)
{
return(Task.FromResult(true));
}
var task = _writeTaskScheduler.Schedule(() =>
{
tag.LockValue();
try
{
tag.DetectDataTypeForValue(value);
if (!IsConnected)
{
throw new PlcCommunicationException(
"BeckhoffTagController can't write tag because there is no connection established!",
_adsAddress, _adsPort.ToString(CultureInfo.InvariantCulture), string.Empty);
}
var address = GetPlcAddress(tag);
var dataStream = new AdsStream(tag.BitSize == 0 ? 81 : tag.BitSize / 8);
try
{
if (address == null)
{
int handle = _twinCatClient.CreateVariableHandle(tag.FullName());
var isDataStream = WriteToStream(dataStream, tag, value);
try
{
if (isDataStream)
{
_twinCatClient.Write(handle, dataStream);
}
else
{
_twinCatClient.WriteAny(handle, value);
}
}
finally
{
_twinCatClient.DeleteVariableHandle(handle);
}
}
else
{
var isDataStream = WriteToStream(dataStream, tag, value);
if (isDataStream)
{
_twinCatClient.Write(address.IndexGroup, address.IndexOffset, dataStream);
}
else
{
_twinCatClient.WriteAny(address.IndexGroup, address.IndexOffset, value);
}
}
}
catch (AdsErrorException ex)
{
if (_logger != null)
{
_logger.Warn("Couldn't write " + tag.FullName() + " because " + ex.ErrorCode.ToString() + " will try again...");
}
try
{
// try again
if (address == null)
{
int handle = _twinCatClient.CreateVariableHandle(tag.FullName());
var isDataStream = WriteToStream(dataStream, tag, value);
try
{
if (isDataStream)
{
_twinCatClient.Write(handle, dataStream);
}
else
{
_twinCatClient.WriteAny(handle, value);
}
}
finally
{
_twinCatClient.DeleteVariableHandle(handle);
}
}
else
{
var isDataStream = WriteToStream(dataStream, tag, value);
if (isDataStream)
{
_twinCatClient.Write(address.IndexGroup, address.IndexOffset, dataStream);
}
else
{
_twinCatClient.WriteAny(address.IndexGroup, address.IndexOffset, value);
}
}
}
catch (AdsErrorException e)
{
throw new PlcCommunicationException("Can't write tag " + tag.FullName() + " on port " + _adsPort.ToString(CultureInfo.InvariantCulture),
_adsPort.ToString(CultureInfo.InvariantCulture),
_adsPort.ToString(CultureInfo.InvariantCulture), string.Empty, e);
}
}
}
finally
{
tag.ReleaseValue();
}
// at this point we assume the value was written successfully to the PLC
Type type;
if (IEC61131_3_DataTypes.NetDataTypes.TryGetValue(tag.DataType, out type))
{
tag.Value = Convert.ChangeType(value, type);
}
else
{
tag.Value = value;
}
});
return(task);
}
public Task WriteTag(Tag tag, object value)
{
if (tag.Value == null && value == null)
{
return(Task.FromResult(true));
}
var task = _writeTaskScheduler.Schedule(() =>
{
tag.LockValue();
try
{
tag.DetectDataTypeForValue(value);
if (!IsConnected)
{
throw new PlcCommunicationException(
"IngearTagController can't write tag because there is no connection established!",
_controlLogix.IPAddress, string.Empty);
}
var logixTag = new Logix.Tag(_controlLogix)
{
Name = tag.FullName(),
DataType = IngearHelper.ParseNetLogixDataType(tag.DataType)
};
// for some reason we must read the tag at least once
if (logixTag.ErrorCode != 0)
{
_controlLogix.ReadTag(logixTag);
}
// handle special DataTypes like UDTs
ConvertToLogixTagValueFunction convertFunction;
if (_tagValueConverters != null &&
_tagValueConverters.TryGetValue(tag.DataType, out convertFunction))
{
logixTag.Value = convertFunction(value);
}
else
{
if (tag.DataType.Equals(IEC61131_3_DataTypes.Boolean))
{
if ((bool)value)
{
logixTag.Value = "True";
}
else
{
logixTag.Value = "False";
}
}
else
{
logixTag.Value = value;
}
}
var result = _controlLogix.WriteTag(logixTag);
if (result != ResultCode.E_SUCCESS)
{
throw new PlcCommunicationException("Can't write value to ControlLogix.",
_controlLogix.IPAddress,
_controlLogix.Path, logixTag.ErrorString);
}
}
finally
{
tag.ReleaseValue();
}
});
return(task);
}