/// <summary>
/// Monitor the specified tag for changes
/// </summary>
/// <typeparam name="T">the type of tag to monitor</typeparam>
/// <param name="tag">The fully-qualified identifier of the tag. You can specify a subfolder by using a comma delimited name.
/// E.g: the tag `foo.bar` monitors the tag `bar` on the folder `foo`</param>
/// <param name="callback">the callback to execute when the value is changed.
/// The first parameter is the new value of the node, the second is an `unsubscribe` function to unsubscribe the callback</param>
public void Monitor <T>(string tag, Action <T, Action> callback)
{
var subItem = new OpcDa.SubscriptionState
{
Name = (++_sub).ToString(CultureInfo.InvariantCulture),
Active = true,
UpdateRate = DefaultMonitorInterval
};
var sub = _server.CreateSubscription(subItem);
// I have to start a new thread here because unsubscribing
// the subscription during a datachanged event causes a deadlock
Action unsubscribe = () => new Thread(o =>
_server.CancelSubscription(sub)).Start();
sub.DataChanged += (handle, requestHandle, values) =>
{
T casted;
TryCastResult(values[0].Value, out casted);
callback(casted, unsubscribe);
};
sub.AddItems(new[] { new OpcDa.Item {
ItemName = tag
} });
sub.SetEnabled(true);
}
private void SubscribeToRead(ReadParameter[] readParameters)
{
var newParameters = readParameters.Where(p => !_itemValues.ContainsKey(p.Address)).ToArray();
if (!newParameters.Any())
{
return;
}
var items = newParameters.Select(p => new Item
{
ItemName = p.Address
}).ToArray();
try
{
_group.AddItems(items);
}
catch
{
_server.CancelSubscription(_group);
_canSubscribe = false;
}
if (_canSubscribe)
{
var itemValues = _server.Read(items);
foreach (var itemValue in itemValues)
{
_itemValues.Add(itemValue.ItemName, itemValue.Value);
}
}
}
public OpcGroup AddGroup(string groupName)
{
OpcGroup _group = new OpcGroup {
IsActive = true, Name = groupName, UpdateRate = new TimeSpan(0, 0, 0, 0, _options.DefaultMonitorInterval)
};
var subItem = new OpcDa.SubscriptionState
{
Name = (++_sub).ToString(CultureInfo.InvariantCulture),
Active = true,
UpdateRate = DefaultMonitorInterval
};
var sub = _server.CreateSubscription(subItem);
Action unsubscribe = () => new Thread(o =>
_server.CancelSubscription(sub)).Start();
dic.Add(groupName, sub);
sub.DataChanged += (subscriptionHandle, requestHandle, values) =>
{
List <OpcItemValue> items = new List <OpcItemValue>();
foreach (OpcDa.ItemValueResult value in values)
{
OpcItemValue item = new OpcItemValue {
GroupName = groupName, Value = value.Value, ItemId = value.ItemName, Quality = value.Quality.ToString(), Timestamp = value.Timestamp
};
items.Add(item);
}
_group.SendValue(items);
};
return(_group);
}
/// <summary>
/// 断开OPC连接
/// </summary>
public void OPC_disconnect()
{
OpcGroupClasssubscription.DataChanged -= new Opc.Da.DataChangedEventHandler(this.OnDataChange); //取消回调事件
OpcGroupClasssubscription.RemoveItems(OpcGroupClasssubscription.Items); //移除组内item
//结束：释放各资源
OpcGroupClassm_server.CancelSubscription(OpcGroupClasssubscription); //m_server前文已说明，通知服务器要求删除组。
OpcGroupClasssubscription.Dispose(); //强制.NET资源回收站回收该subscription的所有资源。
OpcGroupClassm_server.Disconnect(); //断开服务器连接
//不相关的
}
/// <summary>
/// 断开与OPC服务连接，并释放资源
/// </summary>
public void Disconect()
{
itemIndexDic.Clear();
//移除组内item
subscription.RemoveItems(subscription.Items);
//通知服务器要求删除组。
m_server.CancelSubscription(subscription);
subscription.Dispose();
m_server.Disconnect();
}
public void UnsubscribeAll()
{
try
{
serverHandle.CancelSubscription(subscription);
}
catch (Exception exception)
{
Console.WriteLine("Error in Unsubscribing {0}", exception);
}
}
/// <summary>
/// 断开OPC服务器连接
/// </summary>
private void DisConnect()
{
if (m_server != null)
{
m_subscription.RemoveItems(m_subscription.Items);
// 结束：释放各资源
m_server.CancelSubscription(m_subscription); // m_server前文已说明，通知服务器要求删除组。
m_subscription.Dispose(); // 强制.NET资源回收站回收该subscription的所有资源。
m_server.Disconnect(); // 断开服务器连接
}
}
/// <summary>
/// OPC断开连接
/// </summary>
public void mOpc_DisConn()
{
try
{
if (m_Server != null)
{
subscription.RemoveItems(subscription.Items);
//结束：释放各资源
m_Server.CancelSubscription(subscription); //m_server前文已说明，通知服务器要求删除组。
subscription.Dispose(); //强制.NET资源回收站回收该subscription的所有资源。
m_Server.Disconnect();
}
}
catch (Exception ex)
{
throw new Exception("OPC断开函数（mOpc_DisConn）异常：" + ex.ToString());
}
}
/// <summary>
/// 断开OPC服务器连接
/// </summary>
private void DisConnect()
{
if (m_server != null)
{
m_subscription.RemoveItems(m_subscription.Items);
// 结束：释放各资源
m_server.CancelSubscription(m_subscription); // m_server前文已说明，通知服务器要求删除组。
m_subscription.Dispose(); // 强制.NET资源回收站回收该subscription的所有资源。
m_server.Disconnect(); // 断开服务器连接
}
if (null != m_timer)
{
m_timer.Stop();
m_timer.Close();
m_timer.Dispose();
}
m_lstItemValueResult = null;
m_lstAckTelegram = null;
}
/// <summary>
/// Monitor the specified tag for changes
/// </summary>
/// <typeparam name="T">the type of tag to monitor</typeparam>
/// <param name="tag">The fully-qualified identifier of the tag. You can specify a subfolder by using a comma delimited name.
/// E.g: the tag `foo.bar` monitors the tag `bar` on the folder `foo`</param>
/// <param name="callback">the callback to execute when the value is changed.
/// The first parameter is a MonitorEvent object which represents the data point, the second is an `unsubscribe` function to unsubscribe the callback</param>
public void Monitor <T>(string tag, Action <ReadEvent <T>, Action> callback)
{
var subItem = new OpcDa.SubscriptionState
{
Name = (++_sub).ToString(CultureInfo.InvariantCulture),
Active = true,
UpdateRate = DefaultMonitorInterval
};
var sub = _server.CreateSubscription(subItem);
// I have to start a new thread here because unsubscribing
// the subscription during a datachanged event causes a deadlock
Action unsubscribe = () => new Thread(o =>
_server.CancelSubscription(sub)).Start();
sub.DataChanged += (handle, requestHandle, values) =>
{
T casted;
TryCastResult(values[0].Value, out casted);
var monitorEvent = new ReadEvent <T>();
monitorEvent.Value = casted;
monitorEvent.SourceTimestamp = values[0].Timestamp;
monitorEvent.ServerTimestamp = values[0].Timestamp;
if (values[0].Quality == OpcDa.Quality.Good)
{
monitorEvent.Quality = Quality.Good;
}
if (values[0].Quality == OpcDa.Quality.Bad)
{
monitorEvent.Quality = Quality.Bad;
}
callback(monitorEvent, unsubscribe);
};
sub.AddItems(new[] { new OpcDa.Item {
ItemName = tag
} });
sub.SetEnabled(true);
}
public void Work()
{
int i = 5;
if (i == 1)
{
url = new Opc.URL("opcda://192.168.0.4/OPC.PHDServerDA.1");
server = new Opc.Da.Server(fact, null);
server.Connect(url, new Opc.ConnectData(new System.Net.NetworkCredential()));
Opc.Da.Item[] itemCollection = new Opc.Da.Item[1];
itemCollection[0] = new Opc.Da.Item {
ItemName = "RTOS.TEST.PV", MaxAge = -1
};
Opc.Da.ItemValueResult[] result = server.Read(itemCollection);
Console.WriteLine(result[0].Value);
server.Disconnect();
}
else if (i == 2)
{
url = new Opc.URL("opcda://192.168.0.4/OPC.PHDServerDA.1");
server = new Opc.Da.Server(fact, null);
server.Connect(url, new Opc.ConnectData(new System.Net.NetworkCredential()));
groupState = new Opc.Da.SubscriptionState();
groupState.Name = "Group";
groupState.ServerHandle = null;
groupState.ClientHandle = Guid.NewGuid().ToString();
groupState.Active = true;
groupState.UpdateRate = 1000;
groupState.Deadband = 0;
groupState.Locale = null;
groupRead = (Opc.Da.Subscription)server.CreateSubscription(groupState);
string[] itemName = { "RTOS.TEST.PV", "RTOR.TI1237.DACA.PV" };
Opc.Da.Item[] items = new Opc.Da.Item[2];
for (int j = 0; j < items.Length; j++)
{
items[j] = new Opc.Da.Item();
items[j].ClientHandle = Guid.NewGuid().ToString();
items[j].ItemPath = null;
items[j].ItemName = itemName[j];
}
groupRead.AddItems(items);
//groupRead.DataChanged += new Opc.Da.DataChangedEventHandler(group_DataChanged);
Opc.Da.ItemValueResult[] results = groupRead.Read(groupRead.Items);
foreach (ItemValueResult result in results)
{
Console.WriteLine("{0},{1},{2},{3}", result.ItemName, result.Value, result.Quality, result.Timestamp);
}
//groupRead.DataChanged -= new Opc.Da.DataChangedEventHandler(group_DataChanged);
groupRead.RemoveItems(groupRead.Items);
server.CancelSubscription(groupRead);
groupRead.Dispose();
server.Disconnect();
}
else if (i == 3)
{
url = new Opc.URL("opcda://192.168.0.4/OPC.PHDServerDA.1");
server = new Opc.Da.Server(fact, null);
server.Connect(url, new Opc.ConnectData(new System.Net.NetworkCredential()));
groupState = new Opc.Da.SubscriptionState();
groupState.Name = "Group";
groupState.ServerHandle = null;
groupState.ClientHandle = Guid.NewGuid().ToString();
groupState.Active = true;
groupState.UpdateRate = 1000;
groupState.Deadband = 0;
groupState.Locale = null;
groupWrite = (Opc.Da.Subscription)server.CreateSubscription(groupState);
string[] itemName = { "RTOS.TEST.PV", "RTOS.TEST2.PV" };
Opc.Da.Item[] items = new Opc.Da.Item[2];
for (int j = 0; j < items.Length; j++)
{
items[j] = new Opc.Da.Item();
items[j].ClientHandle = Guid.NewGuid().ToString();
items[j].ItemPath = null;
items[j].ItemName = itemName[j];
}
groupWrite.AddItems(items);
//groupRead.DataChanged += new Opc.Da.DataChangedEventHandler(group_DataChanged);
Opc.Da.ItemValue[] writeValues = new Opc.Da.ItemValue[groupWrite.Items.Length];
for (int k = 0; k < groupWrite.Items.Length; k++)
{
writeValues[k] = new Opc.Da.ItemValue((ItemIdentifier)groupWrite.Items[k]);
}
writeValues[0].Value = 5;
writeValues[1].Value = 6;
groupWrite.Write(writeValues);
Console.WriteLine("Press any key to close...");
Console.ReadLine();
//groupRead.DataChanged -= new Opc.Da.DataChangedEventHandler(group_DataChanged);
groupWrite.RemoveItems(groupWrite.Items);
server.CancelSubscription(groupWrite);
groupWrite.Dispose();
server.Disconnect();
}
else if (i == 4)
{
url = new Opc.URL("opchda://192.168.0.4/OPC.PHDServerHDA.1");
serverHda = new Opc.Hda.Server(fact, null);
serverHda.Connect(url, new Opc.ConnectData(new System.Net.NetworkCredential()));
try
{
}
catch (Opc.ConnectFailedException opcConnEx)
{
Console.WriteLine(string.Format("Could not connect to server {0}", "OPC.PHDServerHDA.1"));
Console.WriteLine(opcConnEx.ToString());
}
Console.WriteLine("Are we connected? " + serverHda.IsConnected);
string[] itemName = { "RTOS.TEST.PV", "RTOS.TEST2.PV" };
Opc.Hda.Trend groupHda = new Trend(serverHda);
groupHda.Name = "HDA";
groupHda.AggregateID = AggregateID.NOAGGREGATE;
DateTime startTime = DateTime.Now.AddHours(-1);
DateTime endTime = DateTime.Now;
groupHda.StartTime = new Opc.Hda.Time(startTime);
groupHda.EndTime = new Opc.Hda.Time(endTime);
groupHda.MaxValues = 0;
groupHda.IncludeBounds = false;
serverHda.Trends.Add(groupHda);
Opc.Hda.Item[] items = new Opc.Hda.Item[2];
for (int m = 0; m < 2; m++)
{
items[m] = new Opc.Hda.Item();
items[m].ItemName = itemName[m];
items[m].ItemPath = null;
items[m].ClientHandle = Guid.NewGuid().ToString();
}
IdentifiedResult[] identifiedResult = serverHda.CreateItems(items);
if (identifiedResult != null)
{
foreach (IdentifiedResult item in identifiedResult)
{
if (item.ResultID.Succeeded())
{
groupHda.Items.Add(new Opc.Hda.Item(item));
}
}
}
Opc.Hda.ItemValueCollection[] results = groupHda.ReadRaw();
Opc.Hda.ItemValueCollection result1 = results[0];
foreach (Opc.Hda.ItemValue result in result1)
{
Console.WriteLine("{0},{1},{2}", result.Value, result.Quality, result.Timestamp);
}
serverHda.Disconnect();
}
else if (i == 5)
{
url = new Opc.URL("opchda://192.168.0.4/OPC.PHDServerHDA.1");
serverHda = new Opc.Hda.Server(fact, null);
serverHda.Connect(url, new Opc.ConnectData(new System.Net.NetworkCredential()));
try
{
}
catch (Opc.ConnectFailedException opcConnEx)
{
Console.WriteLine(string.Format("Could not connect to server {0}", "OPC.PHDServerHDA.1"));
Console.WriteLine(opcConnEx.ToString());
}
Console.WriteLine("Are we connected? " + serverHda.IsConnected);
string[] itemName = { "RTOR.TI1237.DACA.PV", "RTOS.TEST2.PV" };
Opc.Hda.Trend groupHda = new Trend(serverHda);
groupHda.Name = "HDA";
groupHda.AggregateID = AggregateID.AVERAGE;
DateTime startTime = DateTime.Now.AddHours(-1);
DateTime endTime = DateTime.Now;
//TimeSpan span = endTime.Subtract(startTime);
//int calcInterval = ((int)span.TotalSeconds);
//groupHda.ResampleInterval = (decimal)calcInterval;
//DateTime startTime = new DateTime(2020, 6, 12, 9, 0, 0, 0);
//DateTime endTime = new DateTime(2020, 6, 12, 10, 0, 0, 0);
int calcInterval = 300;
groupHda.ResampleInterval = (decimal)calcInterval;
groupHda.StartTime = new Opc.Hda.Time(startTime);
groupHda.EndTime = new Opc.Hda.Time(endTime);
groupHda.MaxValues = 0;
groupHda.IncludeBounds = false;
serverHda.Trends.Add(groupHda);
Opc.Hda.Item[] items = new Opc.Hda.Item[2];
for (int m = 0; m < 2; m++)
{
items[m] = new Opc.Hda.Item();
items[m].ItemName = itemName[m];
items[m].ItemPath = null;
items[m].ClientHandle = Guid.NewGuid().ToString();
}
IdentifiedResult[] identifiedResult = serverHda.CreateItems(items);
if (identifiedResult != null)
{
foreach (IdentifiedResult item in identifiedResult)
{
if (item.ResultID.Succeeded())
{
groupHda.Items.Add(new Opc.Hda.Item(item));
}
}
}
Opc.Hda.ItemValueCollection[] results = groupHda.ReadProcessed();
Opc.Hda.ItemValueCollection result1 = results[0];
foreach (Opc.Hda.ItemValue result in result1)
{
Console.WriteLine("{0},{1},{2}", result.Value, result.Quality, result.Timestamp);
}
serverHda.Disconnect();
}
}
