public void SubscribeTag(ITag TagToSubscribe, int EventMaxFrequency = 0, int MaxDelayToFireEvent = 0, Action <ITag> OnTagValueChangeAction = null)
{
if (!TagSubscriptionDictionary.ContainsKey(TagToSubscribe.Name))
{
OPCTag T = TagToSubscribe as OPCTag;
TagSubscriptionDictionary.Add(TagToSubscribe.Name, TagToSubscribe as OPCTag);
T.SetToSubscription(EventMaxFrequency, MaxDelayToFireEvent, OnTagValueChangeAction);
}
CreateSubscription();
}
public bool WriteTag(string tagName, object tagValue)
{
OPCTag T = (OPCTag)GetTag(tagName);
if (T != null)
{
return(T.WriteItem(tagValue));
}
else
{
return(false);
}
}
public object ReadTag(string tagName)
{
OPCTag T = (OPCTag)GetTag(tagName);
if (T != null)
{
if (T.ReadItem())
{
return(T.Value);
}
}
return(null);
}
public ITag AddTag(string TagName, string TagAddress, Type TagType, int?TagTypeSize = null, int ElementN = 1)
{
if (!_TagDictionary.ContainsKey(TagName))
{
OPCTag T = new OPCTag(this, TagName, TagAddress, TagType);
_TagDictionary.Add(TagName, T);
return(T);
}
else
{
return(_TagDictionary[TagName]);
}
}
public void StartCyclicalRefresh(List <string> TagsToReadName, int Interval = 100, Action <List <ITag> > OnTagCyclicalRefreshAction = null)
{
List <ITag> TagsToRead = new List <ITag>();
foreach (string item in TagsToReadName)
{
OPCTag T = (OPCTag)GetTag(item);
if (T != null)
{
TagsToRead.Add(T);
}
}
StartCyclicalRefresh(TagsToRead, Interval, OnTagCyclicalRefreshAction);
}
public void UnsubscribeTags(List <ITag> TagsToUnSubscribe)
{
if (TagsToUnSubscribe.Count > 0)
{
RemoveSubscription(TagsToUnSubscribe);
Logger?.LogDebug($"OPC - Tag Subscription - Removed from subscription {TagsToUnSubscribe.Count()} Tags. Total tags in subscription: {TagSubscriptionDictionary.Count()}");
foreach (var item in TagsToUnSubscribe)
{
OPCTag T = item.Value as OPCTag;
TagSubscriptionDictionary.Remove(T.Name);
T.RemoveFromSubscription();
}
}
}
public void SubscribeTags(List <string> TagsToSubscribeNames, int EventMaxFrequency = 0, int MaxDelayToFireEvent = 0, Action <ITag> OnTagValueChangeAction = null)
{
foreach (string item in TagsToSubscribeNames)
{
if (!TagSubscriptionDictionary.ContainsKey(item))
{
OPCTag T = (OPCTag)GetTag(item);
if (T != null)
{
TagSubscriptionDictionary.Add(T.Name, T);
T.SetToSubscription(EventMaxFrequency, MaxDelayToFireEvent, OnTagValueChangeAction);
}
}
}
CreateSubscription();
}
public bool WriteTags(List <string> tagNameList, List <object> objectList)
{
List <ITag> tagList = new List <ITag>();
foreach (var item in tagNameList)
{
OPCTag T = (OPCTag)GetTag(item);
if (T == null)
{
Logger?.LogException($"OPC - Multiple write error. Tag: {item} not found in dictionary.");
return(false);
}
tagList.Add(T);
}
return(WriteTags(tagList, objectList));
}
public void UnsubscribeTag(ITag TagToUnSubscribe)
{
if (TagSubscriptionDictionary.ContainsKey(TagToUnSubscribe.Name))
{
////Remove tag from dictionary
List <ITag> TagsToUnSubscribe = new List <ITag>()
{
TagToUnSubscribe
};
RemoveSubscription(TagsToUnSubscribe);
OPCTag T = TagToUnSubscribe as OPCTag;
T.RemoveFromSubscription();
Logger?.LogDebug($"OPC - Tag Subscription - Removed from subscription Tag: {TagToUnSubscribe.Name}. Total tags in subscription: {TagSubscriptionDictionary.Count()}");
TagSubscriptionDictionary.Remove(TagToUnSubscribe.Name);
}
}
private void CreateSubscription()
{
if (IsAvailable)
{
if (ClientSubscription == null)
{
// initialize subscription.
ClientSubscription = new Subscription(ClientSession.DefaultSubscription)
{
PublishingInterval = 100
};
//ClientSubscription.MaxNotificationsPerPublish = 0;
//ClientSubscription.Priority = 0;
//ClientSubscription.PublishingEnabled = true;
}
List <MonitoredItem> MonitoredItem_List = new List <MonitoredItem>();
foreach (var item in TagSubscriptionDictionary)
{
OPCTag MyTag = item.Value as OPCTag;
MonitoredItem MyMonitoredItem = new MonitoredItem(ClientSubscription.DefaultItem)
{
DisplayName = MyTag.Name,
StartNodeId = MyTag.Address
};
MyMonitoredItem.Notification += MyTag.OnSubscriptionNotification;
MonitoredItem_List.Add(MyMonitoredItem);
}
ClientSubscription.AddItems(MonitoredItem_List);
if (!IsSubscriptionActive)
{
ClientSession.AddSubscription(ClientSubscription);
ClientSubscription.Create();
IsSubscriptionActive = true;
}
else
{
ClientSubscription.Modify();
}
}
else
{
Logger?.LogWarning($"OPC - Tag Subscription - Client current state is not available. Subscription will be created on next connection.");
}
}
public void UnsubscribeTags()
{
if (TagSubscriptionDictionary.Count > 0)
{
List <ITag> Tag_List = new List <ITag>();
foreach (var item in TagSubscriptionDictionary)
{
OPCTag T = item.Value as OPCTag;
Tag_List.Add(T);
T.RemoveFromSubscription();
}
RemoveSubscription(Tag_List);
Logger?.LogDebug($"OPC - Tag Subscription - Removed all subscription Tags: {TagSubscriptionDictionary.Count()}.");
TagSubscriptionDictionary.Clear();
}
}
public void SubscribeTags(List <ITag> TagsToSubscribe, int EventMaxFrequency = 0, int MaxDelayToFireEvent = 0, Action <ITag> OnTagValueChangeAction = null)
{
int SubscribedTagsN = 0;
if (TagsToSubscribe.Count > 0)
{
foreach (var item in TagsToSubscribe)
{
if (!TagSubscriptionDictionary.ContainsKey(item.Name))
{
OPCTag T = item as OPCTag;
TagSubscriptionDictionary.Add(T.Name, T);
T.SetToSubscription(EventMaxFrequency, MaxDelayToFireEvent, OnTagValueChangeAction);
}
}
CreateSubscription();
Logger?.LogDebug($"OPC - Tag Subscription - Added to subscription: {SubscribedTagsN} Tags. Event max frequency:{EventMaxFrequency}. Total tags in subscription: {TagSubscriptionDictionary.Count()}");
}
}
public bool ReadTags(List <ITag> tagList)
{
try
{
if (!IsAvailable || !IsConnected)
{
return(false);
}
List <NodeId> NodeIdList = new List <NodeId>();
List <Type> ExpectedTypesList = new List <Type>();
List <object> ObjectList = new List <object>();
List <ServiceResult> ServiceResultList = new List <ServiceResult>();
foreach (var tag in tagList)
{
NodeIdList.Add(new NodeId(tag.Address));
ExpectedTypesList.Add(tag.TagType);
}
ClientSession.ReadValues(NodeIdList, ExpectedTypesList, out ObjectList, out ServiceResultList);
int index = 0;
bool Success = true;
foreach (var MyServiceResult in ServiceResultList)
{
OPCTag tag = tagList[index] as OPCTag;
if (!tag.UpdateTag(ServiceResultList[index], ObjectList[index]))
{
Success = false;
}
index++;
}
return(Success);
}
catch (Exception ex)
{
Logger?.LogException($"OPC - Multiple read error. Ex: {ex.Message}.");
return(false);
}
}
public void UnsubscribeTags(List <string> TagsToUnSubscribeNames)
{
List <ITag> Tag_List = new List <ITag>();
if (TagsToUnSubscribeNames.Count > 0)
{
foreach (var itemName in TagsToUnSubscribeNames)
{
OPCTag T = (OPCTag)this.GetTag(itemName);
Tag_List.Add(T);
T.RemoveFromSubscription();
}
//Remove tag from dictionary
RemoveSubscription(Tag_List);
Logger?.LogDebug($"OPC - Tag Subscription - Removed from subscription {TagsToUnSubscribeNames.Count()} Tags. Total tags in subscription: {TagSubscriptionDictionary.Count()}");
foreach (var item in Tag_List)
{
TagSubscriptionDictionary.Remove(item.Name);
}
}
}
private void RemoveSubscription(List <ITag> TagsToUnSubscribe)
{
try
{
List <MonitoredItem> MonitoredItem_List = new List <MonitoredItem>();
foreach (var item in TagsToUnSubscribe)
{
OPCTag MyTag = item.Value as OPCTag;
MonitoredItem MyMonitoredItem = new MonitoredItem(ClientSubscription.DefaultItem)
{
DisplayName = MyTag.Name,
StartNodeId = MyTag.Address
};
MonitoredItem_List.Add(MyMonitoredItem);
}
ClientSubscription.RemoveItems(MonitoredItem_List);
}
catch (Exception ex)
{
}
}
public bool WriteTags(List <ITag> tagList, List <object> objectList)
{
try
{
if (!IsAvailable || !IsConnected)
{
return(false);
}
if (tagList.Count() != objectList.Count())
{
Logger?.LogException($"OPC - WriteTags wrong values. Tags request: {tagList.Count()}. Value given: {objectList.Count()}.");
return(false);
}
WriteValueCollection nodesToWriteCollection = new WriteValueCollection();
int index = 0;
DataValue val = new DataValue();
foreach (var tag in tagList)
{
Type varType = tagList[index].TagType;
object varValue = objectList[index];
var MyValueCasted = Convert.ChangeType(varValue, varType);
val.Value = MyValueCasted;
nodesToWriteCollection.Add(new WriteValue()
{
NodeId = new NodeId(tagList[index].Address),
AttributeId = Attributes.Value,
Value = val
});
index++;
}
StatusCodeCollection results;
DiagnosticInfoCollection diagnosticInfos;
RequestHeader requestHeader = new RequestHeader();
//requestHeader.ReturnDiagnostics = 0;
ResponseHeader RS = ClientSession.Write(
requestHeader,
nodesToWriteCollection,
out results,
out diagnosticInfos);
bool Success = true;
foreach (var result in results)
{
if (result.Code != StatusCodes.Good)
{
Success = false;
}
}
index = 0;
foreach (var item in results)
{
OPCTag tag = tagList[index] as OPCTag;
if (!tag.UpdateTag(item))
{
Success = false;
}
index++;
}
return(Success);
}
catch (Exception ex)
{
Logger?.LogException($"OPC - Multiple read error. Ex: {ex.Message}.");
return(false);
}
}