我正在尝试使用opc ua将服务器传送到客户端,它工作正常,直到我希望我的程序返回值。我使用OnNotification函数:
public void OnNotification(MonitoredItem item, MonitoredItemNotificationEventArgs e)
{
// Debug.Log("Entre aqui");
foreach (var value in item.DequeueValues())
{
// Debug.Log("Entre aqui otra vez");
//Console.WriteLine("{0}: {1}, {2}, {3}", item.DisplayName, value.Value, value.SourceTimestamp, value.StatusCode);
Debug.Log("{0}: {1}, {2}, {3}" + item.DisplayName + value.Value + value.SourceTimestamp + value.StatusCode);
//rotZ = float.Parse(value.Value.ToString());
//J1.Rotate(0, 0, rotZ);
}
}
这是我创建Monitored Item的地方,我将MonitoredItem EventHandler添加到函数中,但我不知道为什么i.Notification事件永远不会发生,因此它永远不会运行OnNotification函数。 我应该触发事件发生吗?我做错了什么?
var filter = new EventFilter();
var triggeringItemId = new MonitoredItem(subscription.DefaultItem)
{
NodeClass = NodeClass.Object,
StartNodeId = ObjectIds.Server,
AttributeId = Attributes.EventNotifier,
MonitoringMode = MonitoringMode.Reporting,
SamplingInterval = -1,
QueueSize = 100,
CacheQueueSize = 100,
Filter = filter
};
// Log("Step 5 - Add a list of items you wish to monitor to the subscription.");
var list = new List<MonitoredItem> {
triggeringItemId,
/*
monitoredItem,
monitoredItem2
*/
};
list.ForEach(i => i.Notification += OnNotification);
Debug.Log(list);
subscription.AddItems(list);
// Log("Step 6 - Add the subscription to the session.");
session.AddSubscription(subscription);
subscription.Create();
答案 0 :(得分:0)
按此顺序,它对我有用:
libfoo.so
然后我创建session.AddSubscription(subscription);
subscription.Create();
,然后将它们添加到订阅中,以及您错过的最后一步:
MonitoredItems
答案 1 :(得分:0)
尝试添加一些&#39;选择&#39; EventFilter的子句。以下列表对应于基本事件类型。 AlarmCondition类型提供了更多字段。
var filter = new EventFilter();
filter.AddSelectClause(ObjectTypes.BaseEventType,Opc.Ua.BrowseNames.EventId); filter.AddSelectClause(ObjectTypes.BaseEventType,Opc.Ua.BrowseNames.EventType); filter.AddSelectClause(ObjectTypes.BaseEventType,Opc.Ua.BrowseNames.SourceNode); filter.AddSelectClause(ObjectTypes.BaseEventType,Opc.Ua.BrowseNames.SourceName); filter.AddSelectClause(ObjectTypes.BaseEventType,Opc.Ua.BrowseNames.Time); filter.AddSelectClause(ObjectTypes.BaseEventType,Opc.Ua.BrowseNames.ReceiveTime); filter.AddSelectClause(ObjectTypes.BaseEventType,Opc.Ua.BrowseNames.LocalTime); filter.AddSelectClause(ObjectTypes.BaseEventType,Opc.Ua.BrowseNames.Message); filter.AddSelectClause(ObjectTypes.BaseEventType,Opc.Ua.BrowseNames.Severity);