protected override IEnumerable <IOpcNode> CreateNodes(OpcNodeReferenceCollection references)
{
var machineNode = new OpcObjectNode(this.DefaultNamespace.GetName("Machine"));
this.jobsNode = new OpcFolderNode(machineNode, "Jobs");
references.Add(machineNode, OpcObjectTypes.ObjectsFolder);
// Add some predefined jobs.
new OpcDataVariableNode <int>(this.jobsNode, "JOB01", value: 0);
new OpcDataVariableNode <int>(this.jobsNode, "JOB02", value: 0);
new OpcDataVariableNode <int>(this.jobsNode, "JOB03", value: 0);
// Define a generic event to notify about job-scheduled.
this.jobScheduldedEventNode = new OpcEventNode(this.jobsNode, "JobSchedulded");
this.jobScheduldedEventNode.Severity = OpcEventSeverity.Medium;
this.jobScheduldedEventNode.Message = "The job has been schedulded.";
this.jobsNode.AddNotifier(this.SystemContext, this.jobScheduldedEventNode);
// Define a generic event to notify about job-completed.
this.jobCompletedEventNode = new OpcEventNode(this.jobsNode, "JobCompleted");
this.jobCompletedEventNode.Severity = OpcEventSeverity.Medium;
this.jobCompletedEventNode.Message = "The job has been completed.";
this.jobsNode.AddNotifier(this.SystemContext, this.jobCompletedEventNode);
return(new IOpcNode[] { machineNode });
}
private static void RunMachine(object state)
{
var context = (OpcContext)state;
var eventNode = new OpcEventNode("State");
var eventSourceNode = default(OpcNode);
while (!machineControl.IsCancellationRequested)
{
var time = DateTime.Now.TimeOfDay;
temperatureNode.Value = time.Seconds + time.Milliseconds * 0.1;
temperatureNode.ApplyChanges(context);
speedNode.Value = time.Seconds * 1000;
speedNode.ApplyChanges(context);
if (time.Seconds % 11 == 0)
{
eventSourceNode = speedNode;
eventNode.Severity = OpcEventSeverity.Medium;
}
else
{
eventSourceNode = temperatureNode;
if (temperatureNode.Value <= 10)
{
eventNode.Severity = OpcEventSeverity.Low;
}
else if (temperatureNode.Value <= 20)
{
eventNode.Severity = OpcEventSeverity.MediumLow;
}
else if (temperatureNode.Value <= 30)
{
eventNode.Severity = OpcEventSeverity.Medium;
}
else if (temperatureNode.Value <= 40)
{
eventNode.Severity = OpcEventSeverity.MediumHigh;
}
else if (temperatureNode.Value <= 50)
{
eventNode.Severity = OpcEventSeverity.High;
}
else
{
eventNode.Severity = OpcEventSeverity.Max;
}
}
eventNode.SourceName = eventSourceNode.SymbolicName;
eventNode.SourceNodeId = eventSourceNode.Id;
var eventData = eventNode.CreateEvent(context);
eventSourceNode.ReportEvent(context, eventData);
// Wait for "StopMachine" or perform next steps after interval elapsed
if (machineControl.Token.WaitHandle.WaitOne(2500))
{
break;
}
}
}
