//======================================================================
// CreateSubscription
/// <summary>
/// Creates a new subscription.
/// </summary>
/// <param name="state">The initial state of the subscription.</param>
/// <returns>The new subscription object.</returns>
public ISubscription CreateSubscription(Opc.Da.SubscriptionState state)
{
if (state == null)
{
throw new ArgumentNullException("state");
}
lock (this)
{
Opc.Da.SubscriptionState copy = (Opc.Da.SubscriptionState)state.Clone();
// assign unique handle.
copy.ServerHandle = m_nextHandle++;
// assign name.
if (copy.Name == null || copy.Name.Length == 0)
{
copy.Name = String.Format("Subscription{0,2:00}", copy.ServerHandle);
}
// create subscription.
Subscription subscription = new Subscription(m_cache, this, copy);
// save reference.
m_subscriptions[copy.ServerHandle] = subscription;
// return new subscription.
return(subscription);
}
}
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);
}
public void ConnectToServer()
{
try
{
//LOCAL OPC CONNECTION kepware
//url = new Opc.URL("opcda://PCNAME/Kepware.KEPServerEX.V6");
//LOCAL OPC CONNECTION RSLinx
//url = new Opc.URL("opcda://PCNAME/RSLinx OPC Server");
//REMOTE OPC CONNECTION WHEN USING opcexpert tunneling
url = new Opc.URL("opcda://PCNAME/RSLinx Remote OPC Server.REMOTEPCNAME");
//REMOTE RSLinx OPC
//this requires DCOM setup
//url = new Opc.URL("opcda://PCNAME/RSLinx Remote OPC Server");
server = new Opc.Da.Server(fact, url);
System.Net.NetworkCredential networkCredential = new System.Net.NetworkCredential();
Opc.ConnectData connecteddata = new Opc.ConnectData(networkCredential);
server.Connect(url, connecteddata);
groupState = new Opc.Da.SubscriptionState();
groupState.Name = "Group";
groupState.UpdateRate = 1; // this isthe time between every reads from OPC server
groupState.Active = true; //this must be true if you the group has to read value
groupRead = (Opc.Da.Subscription)server.CreateSubscription(groupState);
groupRead.DataChanged += new Opc.Da.DataChangedEventHandler(UpdateTagData); //callback when the data are readed
Opc.Da.Item[] items_read = groupRead.AddItems(createSomeTags());
}
catch (Exception E)
{
Console.WriteLine(E.Message);
}
}
/// <summary>
/// Add items (according to "itemList" parameter) into OPC.Subscription
/// </summary>
/// <param name="itemList"></param>
/// <param name="updateRate"></param>
/// <returns></returns>
public bool AddItems(Opc.Da.Item[] itemList, int updateRate = 0)
{
var state = new Opc.Da.SubscriptionState();
try
{
// Remove items
if (Items != null)
{
Subscription.RemoveItems(Items);
}
state.Active = false;
Subscription.ModifyState((int)Opc.Da.StateMask.Active, state);
state.UpdateRate = updateRate > 0 ? updateRate : 1000;
Subscription.ModifyState((int)Opc.Da.StateMask.UpdateRate, state);
foreach (var item in itemList)
{
item.ClientHandle = Guid.NewGuid().ToString();
}
Items = Subscription.AddItems(itemList);
Advised = false;
return(true);
}
catch (Exception e)
{
//MessageBox.Show(ex.Message);
throw e;
}
}
public RFID ReadTagsRFID(bool identify_card)
{
try
{
Opc.Da.Server server = null;
OpcCom.Factory fact = new OpcCom.Factory();
server = new Opc.Da.Server(fact, null);
server.Connect(url, new Opc.ConnectData(new System.Net.NetworkCredential()));
//
Opc.Da.Subscription group;
Opc.Da.SubscriptionState groupState = new Opc.Da.SubscriptionState();
groupState.Name = "RFID";
groupState.Active = true;
group = (Opc.Da.Subscription)server.CreateSubscription(groupState);
//добавление айтемов в группу
Opc.Da.Item[] items = new Opc.Da.Item[2];
items[0] = new Opc.Da.Item();
items[0].ItemName = "ZREADER.RFID_reader.part1";
items[1] = new Opc.Da.Item();
items[1].ItemName = "ZREADER.RFID_reader.part2";
items = group.AddItems(items);
//List<oldRFID> result_list = new List<oldRFID>();
ItemValueResult[] res = group.Read(items);
RFID rfid = new RFID();
EFazsCards ef_card = new EFazsCards();
if (res != null)
{
//UInt16? part1 = res[0].Value != null ? res[0].Value as UInt16? : 37;
//UInt16? part2 = res[1].Value != null ? res[1].Value as UInt16? : 50907;
UInt16?part1 = res[0].Value != null ? res[0].Value as UInt16? : null;
UInt16?part2 = res[1].Value != null ? res[1].Value as UInt16? : null;
if (part1 != null && part2 != null)
{
rfid.part1 = part1;
rfid.part2 = part2;
if (identify_card)
{
int code1 = int.Parse(part1.ToString());
int code2 = int.Parse(part2.ToString());
String.Format("Определим ID=карты code1={0}, code2={1}", code1, code2).SaveInformation();
azsCards card = ef_card.Get().Where(c => c.Number == (code1).ToString("00") + "," + (code2).ToString("00000")).FirstOrDefault();
if (card == null)
{
card = ef_card.Get().Where(c => c.Number == (code1).ToString("000") + "," + (code2).ToString("00000")).FirstOrDefault();
}
rfid.card = card;
}
}
}
return(rfid);
}
catch (Exception e)
{
String.Format("Ошибка выполнения метода ReadTagsRFID(identify_card={0})", identify_card).SaveError(e);
return(null);
}
}
public static ItemValueResult[] RsLinx_OPC_Client_Read_Array(string ItemName, int Length)
{
try
{
//Creo un istanza di OPC.server
Opc.Da.Server server;
//Parametro necessario alla connect
OpcCom.Factory fact = new OpcCom.Factory();
//Creo un istanza di Sottoscrizione
Opc.Da.Subscription groupRead;
//Creo un istanza di SubscriptionState, utile per controllare lo stato della sottoscrizione
Opc.Da.SubscriptionState groupState;
//Creo un array di OPC.Da.Item
Opc.Da.Item[] items = new Opc.Da.Item[1];
//Setto factory e url del server, come url utilizzo quello del RSLinx OPC Server
server = new Opc.Da.Server(fact, null);
server.Url = new Opc.URL(Url);
//Connetto il server
server.Connect();
//Istanzio la sottoscrizione
groupState = new Opc.Da.SubscriptionState();
groupState.Name = "Group";
groupState.UpdateRate = UpdateRate; //Setto il tempo di Refresh del gruppo
groupState.Active = true; //Questo valore deve essere true se voglio aver la possibilità di leggere
//Creo il gruppo sul server
groupRead = (Opc.Da.Subscription)server.CreateSubscription(groupState);
//Istanzio l'Item
items[0] = new Opc.Da.Item();
//Gli do il nome (Rockwell utilizza questa formzattazione dei nomi per gli array
//[NomeTopicOPC]NomeTag,LDimensioneArray es. [MyOPCTopic]Posizione,L50)
items[0].ItemName = $"{ItemName},L{Length}";
//Aggiungo l'oggetto al gruppo
items = groupRead.AddItems(items);
//Leggo il valore dell'item aggiunto
ItemValueResult[] Ritorno = groupRead.Read(items);
//Controllo che la lettura dell'array sia andata a buon fine, se non è così lancio un'eccezione
if (!Ritorno[0].ResultID.Name.Name.Equals("S_OK"))
{
throw new System.Exception("Errore lettura OPC Tag");
}
return(groupRead.Read(items));
}
catch (Exception ex)
{
//Se viene lanciata un'eccezione ritorno un array di ItemValueResult con il primo che ha valore -1 e mostro un Messagebox con l'errore
MessageBox.Show(ex.Message);
ItemValueResult[] Errore = new ItemValueResult[1];
Errore[0] = new ItemValueResult();
float[] Err = { (float)-1, (float)-1 };
Errore[0].Value = Err;
return(Errore);
}
}
/// <summary>
/// 创建组
/// </summary>
/// <param name="_subscriptionname"></param>
public void CreateMySubscription(string _subscriptionname)
{
Opc.Da.SubscriptionState subScriptionState = new Opc.Da.SubscriptionState();
subScriptionState.Active = true; // activate cyclic communication
subScriptionState.ClientHandle = System.Guid.NewGuid().ToString();
subScriptionState.Deadband = 0.0F;
subScriptionState.Name = _subscriptionname;
subScriptionState.UpdateRate = 1000;
opcServer.CreateSubscription(subScriptionState);
}
/// <summary>
/// Добавление тегов к подписке
/// </summary>
public override void AddTags(List <TagId> taglist)
{
TagListBackup = taglist;
var subList = new List <Opc.Da.Item>();
foreach (var tag in taglist)
{
if (_tags.Exists(d => d.ItemName == tag.TagName))
{ // TagListBackup.Add(tag);
subList.Add(new Opc.Da.Item {
ItemName = tag.TagName
});
logger.Logged("Info", "#" + PollerId + ": добавляем тег '" + tag.TagName + "' в подписку", "OpcDaPoller", "AddTags");
}
else
{
logger.Logged("Error", "#" + PollerId + ": тег '" + tag.TagName + "' не обнаружен на сервере", "OpcUaPoller", "AddTags");
}
}
if (!Activated)
{
return;
}
try
{
var groupState = new Opc.Da.SubscriptionState {
Name = "Group", Active = true
};
var @group = (Opc.Da.Subscription)server.CreateSubscription(groupState);
/*
* int tagCounter = 0;
* var items = new Opc.Da.Item[taglist.Count()];
* foreach (TagId tag in taglist)
* {
* var item = new Opc.Da.Item {ItemName = tag.TagName};
* items[tagCounter] = item;
* tagCounter++;
* }*/
@group.AddItems(subList.ToArray());
@group.DataChanged += new Opc.Da.DataChangedEventHandler(OnNotification);
logger.Logged("Info", "Добавлено {" + subList.Count() + "} тегов для контроля с OPC DA сервера #{" + PollerId + "}", "", "");
}
catch (Exception ex)
{
logger.Logged("Error", "Не удалось добавить теги для контроля OPC DA сервером #" + PollerId + ": " + ex.Message, "", "");
}
}
/// <summary>
/// Connect/Disconnect to the server.
/// </summary>
/// <returns></returns>
private bool Connect()
{
// Connect server
var url = new Opc.URL(OpcConnectionString);
// Create an unconnected server object.
OpcServer = GetServerForUrl(url);
if (OpcServer == null)
{
return(false);
}
// Invoke the connect server callback.
try
{
var connectData = new Opc.ConnectData(Credential, null);
OpcServer.Connect(connectData);
var opcDaSrerver = OpcServer as Opc.Da.Server;
if (opcDaSrerver == null)
{
return(false);
}
VendorInfo = opcDaSrerver.GetStatus().VendorInfo;
VersionInfo = opcDaSrerver.GetStatus().ProductVersion;
StatusInfo = opcDaSrerver.GetStatus().StatusInfo;
var state = new Opc.Da.SubscriptionState
{
ClientHandle = Guid.NewGuid().ToString(),
ServerHandle = null,
//Name = "DEFAULT",
Active = false,
UpdateRate = 1000,
KeepAlive = 0,
//Deadband = 0,
//Locale = null
};
Subscription = (Subscription)opcDaSrerver.CreateSubscription(state);
}
catch (Exception e)
{
throw e;
}
return(true);
}
//======================================================================
// CreateSubscription
/// <summary>
/// Creates a new subscription.
/// </summary>
/// <param name="state">The initial state of the subscription.</param>
/// <returns>The new subscription object.</returns>
public ISubscription CreateSubscription(Opc.Da.SubscriptionState state)
{
if (state == null)
{
throw new ArgumentNullException("state");
}
if (m_proxy == null)
{
throw new NotConnectedException();
}
lock (this)
{
return(new Subscription(this, m_proxy, state, m_options.Filters));
}
}
public void AddSubscription(string groupName, List <string> tagList, DataChangedEventHandler onDataChange)
{
if (!_server.IsConnected)
{
Console.WriteLine("Connection to OPC server is not established");
return;
}
// Create group
Opc.Da.Subscription group;
Opc.Da.SubscriptionState groupState = new Opc.Da.SubscriptionState();
groupState.Name = groupName;
groupState.Active = true;
groupState.UpdateRate = 200;
// Short circuit if group already exists
SubscriptionCollection existingCollection = _server.Subscriptions;
if (existingCollection.Count > 0)
{
for (int i = 0; i < existingCollection.Count; i++)
{
if (existingCollection[i].Name == groupName)
{
Console.WriteLine(String.Format("Subscription group {0} already exists", groupName));
return;
}
}
}
group = (Opc.Da.Subscription)_server.CreateSubscription(groupState);
// Create list of items to monitor
Item[] opcItems = new Item[1];
int j = 0;
foreach (string tag in tagList)
{
opcItems[j] = new Item();
opcItems[j].ItemName = tag;
j++;
}
// Attach items and event to group
group.AddItems(opcItems);
//group.DataChanged += new Opc.Da.DataChangedEventHandler(OPCSubscription_DataChanged);
group.DataChanged += new Opc.Da.DataChangedEventHandler(onDataChange);
}
private void Subscript()
{
//设定组状态
state = new Opc.Da.SubscriptionState(); //组（订阅者）状态，相当于OPC规范中组的参数
state.Name = "Welding"; //组名
state.ServerHandle = null; //服务器给该组分配的句柄。
//state.ClientHandle = Guid.NewGuid().ToString();//客户端给该组分配的句柄。
state.ClientHandle = Guid.NewGuid().GetHashCode(); //使用int类型， 效率可能有提高
state.Active = true; //激活该组。
state.UpdateRate = 1000; //刷新频率为1秒。
state.Deadband = 0; // 死区值，设为0时，服务器端该组内任何数据变化都通知组。
state.Locale = null; //不设置地区值。
//添加组
subscription = (Opc.Da.Subscription)m_server.CreateSubscription(state);//创建组
subscription.AddItems(AccessAdapter.GetOPCItemList().ToArray());
////注册回调事件
//subscription.DataChanged += new Opc.Da.DataChangedEventHandler(this.OnDataChange);
}
/// <summary>
/// Active/Deactive the OPC Server as the "auto" mode.
/// When timer reaches, update the data from OPC server automatically.
/// </summary>
public void AdviseDeadvise()
{
if (Subscription == null)
{
return;
}
Advised = !Advised;
try
{
var state = new Opc.Da.SubscriptionState {
Active = Advised
};
Subscription.ModifyState((int)Opc.Da.StateMask.Active, state);
}
catch (Exception e)
{
throw e;
}
}
private void User_Program_Select_Operation_Load(object sender, EventArgs e)
{
BrakePressID();
OPCServer = new Opc.Da.Server(OPCFactory, null);
//.Url = new Opc.URL("opcda://OHN66OPC/Matrikon.OPC.AllenBradleyPLCs.1");
OPCServer.Url = new Opc.URL("opcda://OHN66OPC/Kepware.KEPServerEX.V6");
//OPCServer.Url = new Opc.URL("opcda://OHN7009/Matrikon.OPC.AllenBradleyPLCs.1");
OPCServer.Connect();
OperationSelection_StateRead = new Opc.Da.SubscriptionState();
OperationSelection_StateRead.Name = "153R_Spotweld";
OperationSelection_StateRead.UpdateRate = 200;
OperationSelection_StateRead.Active = true;
OperationSelection_Read = (Opc.Da.Subscription)OPCServer.CreateSubscription(OperationSelection_StateRead);
OperationSelection_StateWrite = new Opc.Da.SubscriptionState();
OperationSelection_StateWrite.Name = "PB_OperationSelect_WriteGroup";
OperationSelection_StateWrite.Active = false;
OperationSelection_Write = (Opc.Da.Subscription)OPCServer.CreateSubscription(OperationSelection_StateWrite);
}
/// <summary>
/// 设定组（订阅者）状态
/// </summary>
public void SetGroup()
{
state = new Opc.Da.SubscriptionState();
//组名
state.Name = "IOTPLC";
//服务器给该组分配的句柄。
state.ServerHandle = null;
//客户端给该组分配的句柄。
state.ClientHandle = Guid.NewGuid().ToString();
//激活该组。
state.Active = true;
//刷新频率为1秒。
state.UpdateRate = 100;
// 死区值，设为0时，服务器端该组内任何数据变化都通知组。
state.Deadband = 0;
//不设置地区值。
state.Locale = null;
//添加组
subscription = (Opc.Da.Subscription)m_server.CreateSubscription(state);
}
/// <summary>
/// 建立订阅
/// </summary>
public void CreateSubscription()
{
try
{
subsState = new SubscriptionState();
subsState.Name = "OPCNJ"; //组名
subsState.ServerHandle = null; //服务器给该组分配的句柄。
subsState.ClientHandle = Guid.NewGuid().ToString(); //客户端给该组分配的句柄
subsState.Active = true;
subsState.UpdateRate = 100; //刷新频率为1秒。
subsState.Deadband = 0; // 死区值，设为0时，服务器端该组内任何数据变化都通知组。
subsState.Locale = null; //不设置地区值。
subscription = (Opc.Da.Subscription)m_Server.CreateSubscription(subsState);
Item[] items = new Item[10];
for (int i = 0; i < items.Length; i++)
{
items[i] = new Item();
items[i].ClientHandle = Guid.NewGuid().ToString(); //客户端给该数据项分配的句柄。
items[i].ItemPath = null; //该数据项在服务器中的路径
}
items[0].ItemName = IEGInterface.Properties.Settings.Default.strSendBuffer;
items[1].ItemName = IEGInterface.Properties.Settings.Default.strSendFlag;
items[2].ItemName = IEGInterface.Properties.Settings.Default.strReceiveBuffer;
items[3].ItemName = IEGInterface.Properties.Settings.Default.strReceiveFlag;
items[4].ItemName = IEGInterface.Properties.Settings.Default.strEtv1Alarms;
items[5].ItemName = IEGInterface.Properties.Settings.Default.strEtv2Alarms;
items[6].ItemName = IEGInterface.Properties.Settings.Default.strHall1Alarms;
items[7].ItemName = IEGInterface.Properties.Settings.Default.strHall2Alarms;
items[8].ItemName = IEGInterface.Properties.Settings.Default.strHall3Alarms;
items[9].ItemName = IEGInterface.Properties.Settings.Default.strHall4Alarms;
subscription.AddItems(items);
}
catch (Exception ex)
{
throw new Exception("OPC建立订阅(CreateSubscription)异常：" + ex.ToString());
}
}
void StartMonitoring()
{
foreach (var item in MonitoredMeasurements)
{
var subItem = new OpcDa.SubscriptionState
{
Name = item.Name,
Active = true,
UpdateRate = item.MonitorResolution
};
var sub = l_server.CreateSubscription(subItem);
sub.DataChanged += (handle, requestHandle, values) =>
{
var p = values[0];
MonitorData(item, p);
};
sub.AddItems(new[] { new OpcDa.Item {
ItemName = item.Path
} });
sub.SetEnabled(true);
}
}
private Object getOPCValue(String ItemName, BrowseElement[] be)
{
// Create a group
Opc.Da.Subscription group;
Opc.Da.SubscriptionState groupState = new Opc.Da.SubscriptionState();
groupState.Name = ItemName;
groupState.Active = true;
group = (Opc.Da.Subscription)server.CreateSubscription(groupState);
//Console.WriteLine(group.);
// add items to the group.
Opc.Da.Item[] items = new Opc.Da.Item[1];
items[0] = new Opc.Da.Item();
items[0].ItemName = ItemName;
items = group.AddItems(items);
ItemValueResult[] ir = group.Read(items);
return(ir[0].Value);
}
/// <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 override bool Initialize(string connectionString, int newPollerId)
{
bool result = false;
ConnString = connectionString;
try
{
PollerId = newPollerId;
url = new Opc.URL(connectionString);
server = null;
var fact = new OpcCom.Factory();
server = new Opc.Da.Server(fact, null);
server.Connect(url, new Opc.ConnectData(new System.Net.NetworkCredential()));
server.ServerShutdown += Shutdown;
_tags = new List <Opc.Da.Item>();
Browse();
_groupWriteState = new Opc.Da.SubscriptionState();
_groupWriteState.Name = "GroupWrite";
_groupWriteState.Active = false;
groupWrite = (Opc.Da.Subscription)server.CreateSubscription(_groupWriteState);
Activated = true;
logger.Logged("Info", "Состояние сервера: " + server.GetStatus().StatusInfo, "", "");
result = true;
}
catch (Exception ex)
{
logger.Logged("Error", "Не удалось подключиться к OPC DA серверу " + connectionString + ": " + ex.Message, "", "");
// logger.Logged("Warn", "Повторная попытка через 5 секунд...", "", "");
//Thread.Sleep(5000);
}
return(result);
}
// Form Loads.
// Checks Spot Weld Computer.
// Connects to OPC Server
private void User_Program_Reset_Weld_Count_Dialog_Load(object sender, EventArgs e)
{
SpotWeldID();
OPCServer = new Opc.Da.Server(OPCFactory, null);
OPCServer.Url = new Opc.URL("opcda://OHN66OPC/Kepware.KEPServerEX.V6");
OPCServer.Connect();
ResetWeldCount_StateRead = new Opc.Da.SubscriptionState();
ResetWeldCount_StateRead.Name = "Reset_Weld_Count_Spotweld";
ResetWeldCount_StateRead.UpdateRate = 1000;
ResetWeldCount_StateRead.Active = true;
ResetWeldCount_Read = (Opc.Da.Subscription)OPCServer.CreateSubscription(ResetWeldCount_StateRead);
ResetWeldCount_StateWrite = new Opc.Da.SubscriptionState();
ResetWeldCount_StateWrite.Name = "PB_Reset_Part_Weld_Count_On";
ResetWeldCount_StateWrite.Active = true;
ResetWeldCount_Write = (Opc.Da.Subscription)OPCServer.CreateSubscription(ResetWeldCount_StateWrite);
ResetWeldCount_Off_StateWrite = new Opc.Da.SubscriptionState();
ResetWeldCount_Off_StateWrite.Name = "PB_Reset_Part_Weld_Count_Off";
ResetWeldCount_Off_StateWrite.Active = true;
ResetWeldCount_Off_Write = (Opc.Da.Subscription)OPCServer.CreateSubscription(ResetWeldCount_Off_StateWrite);
}
public void ConnectToServer()
{
try
{
//url = new Opc.URL("opcda://MUHUMTHA/Kepware.KEPServerEX.V6");
//url = new Opc.URL("opcda://IAPENG1/RSLinx OPC Server");
//REMOTE OPC CONNECTION
url = new Opc.URL("opcda://MUHUMTHA/RSLinx OPC Server.MUHUNTHANPC");
server = new Opc.Da.Server(fact, url);
System.Net.NetworkCredential networkCredential = new System.Net.NetworkCredential();
Opc.ConnectData connecteddata = new Opc.ConnectData(networkCredential);
server.Connect(url, connecteddata);
groupState = new Opc.Da.SubscriptionState();
groupState.Name = "Group";
groupState.UpdateRate = 1; // this isthe time between every reads from OPC server
groupState.Active = true; //this must be true if you the group has to read value
groupRead = (Opc.Da.Subscription)server.CreateSubscription(groupState);
groupRead.DataChanged += new Opc.Da.DataChangedEventHandler(UpdateTagData); //callback when the data are readed
//Opc.Da.Item[] items_read = groupRead.AddItems(createSomeTags());
Opc.Da.Item[] items_read = groupRead.AddItems(createSomeTags());
// Create a write group
//groupStateWrite = new Opc.Da.SubscriptionState();
//groupStateWrite.Name = "Group_Write";
//groupStateWrite.UpdateRate = 1000;
//groupStateWrite.Active = false;//not needed to read if you want to write only
//groupWrite = (Opc.Da.Subscription)server.CreateSubscription(groupStateWrite);
//groupWrite.DataChanged += new Opc.Da.DataChangedEventHandler(ReadCompleted);
Global.flag1 = true;
}
catch (Exception E)
{
Console.WriteLine(E.Message);
}
}
public override void Add(string itemName)
{
lock(_thisLock)
{
try
{
OpcAddress addr = Find(itemName);
if (addr == null)
{
string[] itemIdSplited = itemName.Split(']');
string[] addressSplited;
string topic = "";
//Encontra o nome do topico
if (itemName.Contains(']')) {
topic = itemName.Split(']')[0].Substring(1);
}
if (itemIdSplited.Length > 1)
{
addressSplited = itemIdSplited[1].Split(':');
}
else
{
itemIdSplited = itemName.Split('.');
addressSplited = itemIdSplited[2].Split(':');
}
Opc.Da.Subscription opcDaGroup = null;
foreach (Opc.Da.Subscription opcDaGrp in _opcDaServer.Subscriptions)
{
if (opcDaGrp.Name == topic + addressSplited[0])
{
opcDaGroup = opcDaGrp;
}
}
if (opcDaGroup == null)
{
Opc.Da.SubscriptionState groupState = new Opc.Da.SubscriptionState();
groupState.ClientHandle = Guid.NewGuid().ToString();
groupState.Name = topic + addressSplited[0];
// groupState.UpdateRate = 250;
opcDaGroup = (Opc.Da.Subscription)_opcDaServer.CreateSubscription(groupState);
//opcDaGroup.DataChanged += new Opc.Da.DataChangedEventHandler(OpcDataChanged);
opcDaGroup.DataChanged += delegate(object subscriptionHandle, object requestHandle, ItemValueResult[] values)
{
// BackgroundWorker back = new BackgroundWorker();
// back.DoWork += delegate(object sender, DoWorkEventArgs e)
// {
// foreach (Opc.Da.ItemValueResult ivr in values)
// {
// OpcAddress adr = Find(ivr.ItemName);
// adr.SetValue(ivr.Value.ToString());
// OnDataChanged(new DataChangedEventArgs(ivr.ItemName, ivr.Value));
// }
// };
// back.RunWorkerAsync();
foreach (Opc.Da.ItemValueResult ivr in values)
{
OpcAddress adr = Find(ivr.ItemName);
adr.SetValue(ivr.Value.ToString());
OnDataChanged(new DataChangedEventArgs(ivr.ItemName, ivr.Value));
}
};
}
Opc.Da.Item opcDaItem = new Opc.Da.Item();
opcDaItem.ClientHandle = Guid.NewGuid().ToString();
opcDaItem.ItemName = itemName;
opcDaItem.MaxAgeSpecified = true;
opcDaItem.MaxAge = 100;
opcDaItem.SamplingRateSpecified = true;
opcDaItem.SamplingRate = 10;
opcDaGroup.AddItems(new Opc.Da.Item[] { opcDaItem });
addr = new OpcAddress(opcDaItem, opcDaGroup);
_addrList.Add(addr);
}
return;
}
catch (Exception ex)
{
MessageBox.Show(ex.Message);
return;
}
}
}
public void AddSubscription(string groupName, List<string> tagList, DataChangedEventHandler onDataChange)
{
if (!_server.IsConnected) {
Console.WriteLine("Connection to OPC server is not established");
return;
}
// Create group
Opc.Da.Subscription group;
Opc.Da.SubscriptionState groupState = new Opc.Da.SubscriptionState();
groupState.Name = groupName;
groupState.Active = true;
groupState.UpdateRate = 200;
// Short circuit if group already exists
SubscriptionCollection existingCollection = _server.Subscriptions;
if (existingCollection.Count > 0) {
for(int i = 0; i < existingCollection.Count; i++){
if (existingCollection[i].Name == groupName) {
Console.WriteLine(String.Format("Subscription group {0} already exists", groupName));
return;
}
}
}
group = (Opc.Da.Subscription)_server.CreateSubscription(groupState);
// Create list of items to monitor
Item[] opcItems = new Item[1];
int j = 0;
foreach (string tag in tagList) {
opcItems[j] = new Item();
opcItems[j].ItemName = tag;
j++;
}
// Attach items and event to group
group.AddItems(opcItems);
//group.DataChanged += new Opc.Da.DataChangedEventHandler(OPCSubscription_DataChanged);
group.DataChanged += new Opc.Da.DataChangedEventHandler(onDataChange);
}