/// <summary>
/// This removes the OPC group items, opc group and disconnects and nulls the OPC server connection.
/// </summary>
public void Disconnect()
{
try
{
if (_opcserver == null)
{
return;
}
if (!IsConnected())
{
return;
}
agent.StoreEvent(DateTime.Now.ToString("s"), device, "power", "OFF", null, null, null, null, null, null);
if (opcgroup != null)
{
opcgroup.RemoveItems(handlesSrv, out aE);
opcgroup.Remove(false);
}
_opcserver.Disconnect();
opcgroup = null;
_opcserver = null;
}
catch (Exception e)
{
LogMessage("OPC Disconnect Error: " + e.Message, Logger.ERROR);
_opcserver = null;
}
}
/// <summary>
/// 为OPC组OPC项List内与给定服务端句柄对应的OPC项写入数据，指定是否使用异步写入
/// </summary>
/// <param name="serverHandles">服务端句柄Array</param>
/// <param name="using_async">是否使用异步写入</param>
/// <param name="message">返回信息</param>
/// <returns></returns>
public bool WriteValues(Array serverHandles, bool using_async, out string message)
{
message = string.Empty;
try
{
IEnumerable <int> temp = serverHandles == null || serverHandles.Length == 0 ? null : serverHandles.Cast <int>();
Array handles = GetServerHandles(temp), values = GetValues(temp);
int itemCount = handles.Length - 1;
if (!using_async)
{
OpcGroup.SyncWrite(itemCount, ref handles, ref values, out _errors);
}
else
{
OpcGroup.AsyncWrite(itemCount, ref handles, ref values, out _errors, _random.Next(1, 1000), out int cancelId);
}
GC.Collect();
}
catch (Exception ex)
{
message = string.Format("向名称为{0}的OPC组写入值失败：{1}", OpcGroup.Name, ex.Message);
return(false);
}
return(true);
}
/// <summary>
/// This removes the OPC group iutem, opc group and disconnects and nulls the OPC server connection.
/// </summary>
public void Disconnect()
{
try
{
if (_opcserver == null)
{
return;
}
if (!IsConnected())
{
return;
}
if (opcgroup != null)
{
opcgroup.RemoveItems(handlesSrv, out aE);
opcgroup.Remove(false);
}
_opcserver.Disconnect();
opcgroup = null;
_opcserver = null;
}
catch (Exception e)
{
LogMessage("OPC Disconnect Error: " + e.Message, LogLevel.ERROR);
_opcserver = null;
}
}
public override string ToString()
{
StringBuilder sb = new StringBuilder("OPCIST: ", 256);
sb.AppendFormat("error=0x{0:x} hclt=0x{1:x}", Error, HandleClient);
if (Error == HRESULTS.S_OK)
{
sb.AppendFormat(" val={0} time={1} qual=", DataValue, TimeStamp);
sb.Append(OpcGroup.QualityToString(Quality));
}
return(sb.ToString());
}
public OpcGroup AddGroup(string groupName, bool setActive, int requestedUpdateRate,
int[] biasTime, float[] percentDeadband, int localeID)
{
if (ifServer == null)
{
Marshal.ThrowExceptionForHR(HRESULTS.E_ABORT);
}
OpcGroup grp = new OpcGroup(ref ifServer, false, groupName, setActive, requestedUpdateRate);
grp.internalAdd(biasTime, percentDeadband, localeID);
return(grp);
}
/// <summary>
/// 为OPC组OPC项List内与给定服务端句柄对应的OPC项读取数据
/// </summary>
/// <param name="serverHandles">服务端句柄Array</param>
/// <param name="message">返回信息</param>
/// <returns></returns>
public bool ReadValues(Array serverHandles, out string message)
{
message = string.Empty;
Array values;
try
{
IEnumerable <int> temp = serverHandles == null || serverHandles.Length == 0 ? null : serverHandles.Cast <int>();
Array handles = GetServerHandles(temp);
int itemCount = handles.Length - 1;
//OPCDataSource指定的是OPCCache或者OPCDevice
//它的含义是当你执行同步读操作时，读取的数据来自OPC服务器的缓存还是来自硬件设备
OpcGroup.SyncRead((short)OPCDataSource.OPCDevice, itemCount, ref handles, out values, out _errors, out object qualities, out object timeStamps);
//假如至少读取到1个值，根据服务端句柄找到OPC项信息并更新值
if (values.Length > 0)
{
for (int i = 1; i <= values.Length; i++)
{
OpcItemInfo itemInfo = ListItemInfo.Find(item => item.ServerHandle.Equals(handles.GetValue(i)));
if (itemInfo != null)
{
itemInfo.Value = values.GetValue(i).ToString();
itemInfo.SetPropertyValue(_dataSource);
}
}
}
if (values.Length < itemCount)
{
message = "至少有1个OPC项的值未找到";
}
GC.Collect();
}
catch (Exception ex)
{
message = string.Format("从名称为{0}的OPC组读取值失败：{1}", OpcGroup == null ? "null" : OpcGroup.Name, ex.Message);
return(false);
}
return(values.Length > 0);
}
/// <summary>
/// This removes the OPC group items, opc group and disconnects and nulls the OPC server connection.
/// </summary>
public void Disconnect()
{
try
{
if (_opcserver == null)
return;
if (!IsConnected())
return;
agent.StoreEvent(DateTime.Now.ToString("s"), device, "power", "OFF", null, null, null, null, null, null);
if (opcgroup != null)
{
opcgroup.RemoveItems(handlesSrv, out aE);
opcgroup.Remove(false);
}
_opcserver.Disconnect();
opcgroup = null;
_opcserver = null;
}
catch (Exception e)
{
LogMessage("OPC Disconnect Error: " + e.Message, Logger.ERROR);
_opcserver = null;
}
}
public void Connect()
{
int i;
try
{
#if CREDENTIALS
LogMessage("Test if CNC Exe IsExecuting()", 1);
if ((sCNCProcessName.Length > 0) && !IsExecuting(sOPCMachine, sCNCProcessName))
{
throw new Exception("Cannot start OPC Server" + sCNCProcessName + " not running");
}
LogMessage("Connect to CNC", 1);
// This is used as credentials to logon ont remote pc to see if CNC running
System.Net.NetworkCredential credential;
if (sDomain.Length > 0)
credential = new System.Net.NetworkCredential(sUser, sPassword, sDomain);
else
credential = new System.Net.NetworkCredential(sUser, sPassword); // , sDomain);
#endif
_opcserver = new OpcServer();
LogMessage("Attempt OPC Server Connection", Logger.DEBUG);
// _opcserver will be null if failed...
_opcserver.Connect(this.clsid, this.sIpAddress);
LogMessage("Create OPC Group", Logger.DEBUG);
opcgroup = _opcserver.AddGroup("OPCCSharp-Group", false, 900);
if (opcgroup == null)
throw new Exception("Connect - AddGroup failed");
// FIXME: this only works if OPC item exists.
// Add items to OPC Group
LogMessage("Add OPC Items", Logger.DEBUG);
OPCItemResult[] itemresult;
opcgroup.AddItems(tags, out itemresult);
if (itemresult == null)
throw new Exception("Connect - OPC AddItems failed");
LogMessage("Check OPC items for errors.", Logger.DEBUG);
for (i = 0; i < itemresult.Length; i++)
{
// If the OPC item failed - remove it from the tags to be updated.
if (HRESULTS.Failed(itemresult[i].Error))
{
LogMessage("OPC AddItems Error: " + tags[i].ItemID, Logger.DEBUG);
itemresult = (OPCItemResult[])RemoveAt(itemresult, i);
tags = (OPCItemDef[])RemoveAt(tags, i);
handlesSrv = (int[])RemoveAt(handlesSrv, i);
continue;
}
handlesSrv[i] = itemresult[i].HandleServer;
}
// read group
LogMessage("OPC ReadStatus", Logger.DEBUG);
ReadStatus();
LogMessage("OPC ReadGroup", Logger.DEBUG);
ReadGroup();
}
catch (Exception e)
{
LogMessage("OPC Connect Error: " + e.Message, Logger.ERROR);
Disconnect();
}
}
public void Connect()
{
int i;
try
{
#if CREDENTIALS
LogMessage("Test if CNC Exe IsExecuting()", 1);
if ((sCNCProcessName.Length > 0) && !IsExecuting(sOPCMachine, sCNCProcessName))
{
throw new Exception("Cannot start OPC Server" + sCNCProcessName + " not running");
}
LogMessage("Connect to CNC", 1);
// This is used as credentials to logon ont remote pc to see if CNC running
System.Net.NetworkCredential credential;
if (sDomain.Length > 0)
{
credential = new System.Net.NetworkCredential(sUser, sPassword, sDomain);
}
else
{
credential = new System.Net.NetworkCredential(sUser, sPassword); // , sDomain);
}
#endif
_opcserver = new OpcServer();
LogMessage("Attempt OPC Server Connection", Logger.DEBUG);
// _opcserver will be null if failed...
_opcserver.Connect(this.clsid, this.sIpAddress);
LogMessage("Create OPC Group", Logger.DEBUG);
opcgroup = _opcserver.AddGroup("OPCCSharp-Group", false, 900);
if (opcgroup == null)
{
throw new Exception("Connect - AddGroup failed");
}
// FIXME: this only works if OPC item exists.
// Add items to OPC Group
LogMessage("Add OPC Items", Logger.DEBUG);
OPCItemResult[] itemresult;
opcgroup.AddItems(tags, out itemresult);
if (itemresult == null)
{
throw new Exception("Connect - OPC AddItems failed");
}
LogMessage("Check OPC items for errors.", Logger.DEBUG);
for (i = 0; i < itemresult.Length; i++)
{
// If the OPC item failed - remove it from the tags to be updated.
if (HRESULTS.Failed(itemresult[i].Error))
{
LogMessage("OPC AddItems Error: " + tags[i].ItemID, Logger.DEBUG);
itemresult = (OPCItemResult[])RemoveAt(itemresult, i);
tags = (OPCItemDef[])RemoveAt(tags, i);
handlesSrv = (int[])RemoveAt(handlesSrv, i);
continue;
}
handlesSrv[i] = itemresult[i].HandleServer;
}
// read group
LogMessage("OPC ReadStatus", Logger.DEBUG);
ReadStatus();
LogMessage("OPC ReadGroup", Logger.DEBUG);
ReadGroup();
}
catch (Exception e)
{
LogMessage("OPC Connect Error: " + e.Message, Logger.ERROR);
Disconnect();
}
}
public OpcGroup AddGroup(string groupName, bool setActive, int requestedUpdateRate,
int[] biasTime, float[] percentDeadband, int localeID)
{
if (ifServer == null)
Marshal.ThrowExceptionForHR(HRESULTS.E_ABORT);
OpcGroup grp = new OpcGroup(ref ifServer, false, groupName, setActive, requestedUpdateRate);
grp.internalAdd(biasTime, percentDeadband, localeID);
return grp;
}
