一、OpcRcw.Comn.dll，OpcRcw.Da.dll
C#开发OPC DA客户端，最简单的方法是使用OpcRcw.Comn.dll，OpcRcw.Da.dll封装的API进行。OPC基金会的网站上，也可以下载到这两个库的原始文件DataAccess.cs和Common.cs直接集成到工程中来。
二、连接状态
如何使用C#处理与OPC服务器的连接状态问题?
1、服务层接口定义
-
首先，我们来看看OPC服务器的服务层接口定义，如下图（来源《Data Access Custom Interface Standard Version 2.05A》P6）所示：
这里有两个重要的接口：IOPCServer和IConnectionPointContainer。
- IOPCServer实现了对OPC的服务器管理，包括组的添加和维护、服务器状态的获取等。
- IConnectionPointContainer在不同的接口中都有出现，不同层的定义有区别，在OPC服务器这层，他实现了IOPCShutdown的事件订阅，其他层的使用可以查看OPC规范定义。
2、简单示例
public class OpcDaClient : IOPCDataCallback, IOPCShutdown
{
Type OPCServerType;
IOPCServer OPCServer = null;
IConnectionPointContainer pICPCShutdown = null;
IConnectionPoint pICPShutdown = null;
///其他定义和方法处理
[DllImport("ole32.dll", ExactSpelling = true, PreserveSig = false)]
[return: MarshalAs(UnmanagedType.Interface)]
[MTAThread]
static extern object CoCreateInstance(
[In, MarshalAs(UnmanagedType.LPStruct)] Guid rclsid,
int pUnkOuter,
int dwClsContext,
[In, MarshalAs(UnmanagedType.LPStruct)] Guid riid
);
[MTAThread]
private void ConnectOpcServer()
{
try
{
Guid DaServerGuid = Guid.Parse("...DaServerGuid");
if (DaServerGuid == Guid.Empty)
OPCServerType = Type.GetTypeFromProgID("...DaServer ProgID", "...Host or Ip", true);
else
OPCServerType = Type.GetTypeFromCLSID(DaServerGuid, "...Host or Ip", true);
object obj = System.Activator.CreateInstance(OPCServerType);
OPCServer = (IOPCServer)obj;
pICPCShutdown = (IConnectionPointContainer)obj;
if (pICPCShutdown != null )
{
Guid iid = typeof(IOPCShutdown).GUID;
pICPCShutdown.FindConnectionPoint(ref iid, out pICPShutdown);
if (pICPShutdown != null)
pICPShutdown.Advise(this, out int dwCookie);
}
}
catch (Exception ex)
{
OPCServer = null;
//"ConnectOpcServer: " + ex.Message;
}
}
[DllImport("oleaut32.dll")]
public static extern void VariantClear(IntPtr pVariant);
//dwTransid自动更新时为0，使用IOPCAsyncIO2::Refresh2手工刷新时，有参数dwTransactionID指定
public void OnDataChange(int dwTransid, int hGroup, int hrMasterquality, int hrMastererror, int dwCount, int[] phClientItems, object[] pvValues, short[] pwQualities, System.Runtime.InteropServices.ComTypes.FILETIME[] pftTimeStamps, int[] pErrors)
{
//订阅数据处理
}
public void OnReadComplete(int dwTransid, int hGroup, int hrMasterquality, int hrMastererror, int dwCount, int[] phClientItems, object[] pvValues, short[] pwQualities, System.Runtime.InteropServices.ComTypes.FILETIME[] pftTimeStamps, int[] pErrors)
{
}
public void OnWriteComplete(int dwTransid, int hGroup, int hrMastererr, int dwCount, int[] pClienthandles, int[] pErrors)
{
}
public void OnCancelComplete(int dwTransid, int hGroup)
{
}
/// <summary>
/// Opc服务器状态
/// </summary>
/// <returns>String[] OPC服务器信息</returns>
private string[] GetOpcServerStatus()
{
try
{
if (OPCServer != null)
{
IntPtr ppServerStatus = IntPtr.Zero;
OPCServer.GetStatus(out ppServerStatus);
OPCSERVERSTATUS result = (OPCSERVERSTATUS)Marshal.PtrToStructure(ppServerStatus, typeof(OPCSERVERSTATUS));
Marshal.DestroyStructure(ppServerStatus, typeof(OpcRcw.Da.OPCSERVERSTATUS));
Marshal.FreeCoTaskMem(ppServerStatus);
List<string> info = new List<string>
{
"ProgID: " + appConfigDaClient.DaServer,
"StartTime: " + ToDateTime(result.ftStartTime).ToString("yyyy-MM-dd HH:mm:ss"),
"CurrentTime: " + ToDateTime(result.ftCurrentTime).ToString("yyyy-MM-dd HH:mm:ss"),
"LastUpdateTime: " + ToDateTime(result.ftLastUpdateTime).ToString("yyyy-MM-dd HH:mm:ss"),
"ServerState: " + result.dwServerState.ToString(),
"MajorVersion: " + result.wMajorVersion.ToString(),
"MinorVersion: " + result.wMinorVersion.ToString(),
"BuildNumber: " + result.wBuildNumber.ToString(),
"VendorInfo: " + result.szVendorInfo
};
return info.ToArray();
}
}catch(Exception ex)
{
//有异常，断开处理
}
return null;
}
public void ShutdownRequest([MarshalAs(UnmanagedType.LPWStr)] string szReason)
{
//服务器断开消息处理
//注意，仅服务器优雅停止时才能收到断开消息
}
}
3、OpcRcw.Comn.dll 对应的Common.cs如下：
/* The complete license agreement can be found here:
* http://opcfoundation.org/License/MIT/1.00/
*/
using System;
using System.Collections.Generic;
using System.Text;
using System.Runtime.InteropServices;
namespace OpcRcw.Comn
{
[StructLayout(LayoutKind.Sequential, CharSet=CharSet.Auto)]
public struct CONNECTDATA
{
[MarshalAs(UnmanagedType.IUnknown)]
object pUnk;
[MarshalAs(UnmanagedType.I4)]
int dwCookie;
}
[ComImport]
[GuidAttribute("B196B287-BAB4-101A-B69C-00AA00341D07")]
[InterfaceTypeAttribute(ComInterfaceType.InterfaceIsIUnknown)]
public interface IEnumConnections
{
void RemoteNext(
[MarshalAs(UnmanagedType.I4)]
int cConnections,
[Out]
IntPtr rgcd,
[Out][MarshalAs(UnmanagedType.I4)]
out int pcFetched);
void Skip(
[MarshalAs(UnmanagedType.I4)]
int cConnections);
void Reset();
void Clone(
[Out]
out IEnumConnections ppEnum);
}
[ComImport]
[GuidAttribute("B196B286-BAB4-101A-B69C-00AA00341D07")]
[InterfaceTypeAttribute(ComInterfaceType.InterfaceIsIUnknown)]
public interface IConnectionPoint
{
void GetConnectionInterface(
[Out]
out Guid pIID);
void GetConnectionPointContainer(
[Out]
out IConnectionPointContainer ppCPC);
void Advise(
[MarshalAs(UnmanagedType.IUnknown)]
object pUnkSink,
[Out][MarshalAs(UnmanagedType.I4)]
out int pdwCookie);
void Unadvise(
[MarshalAs(UnmanagedType.I4)]
int dwCookie);
void EnumConnections(
[Out]
out IEnumConnections ppEnum);
}
[ComImport]
[GuidAttribute("B196B285-BAB4-101A-B69C-00AA00341D07")]
[InterfaceTypeAttribute(ComInterfaceType.InterfaceIsIUnknown)]
public interface IEnumConnectionPoints
{
void RemoteNext(
[MarshalAs(UnmanagedType.I4)]
int cConnections,
[Out]
IntPtr ppCP,
[Out][MarshalAs(UnmanagedType.I4)]
out int pcFetched);
void Skip(
[MarshalAs(UnmanagedType.I4)]
int cConnections);
void Reset();
void Clone(
[Out]
out IEnumConnectionPoints ppEnum);
}
[ComImport]
[GuidAttribute("B196B284-BAB4-101A-B69C-00AA00341D07")]
[InterfaceTypeAttribute(ComInterfaceType.InterfaceIsIUnknown)]
public interface IConnectionPointContainer
{
void EnumConnectionPoints(
[Out]
out IEnumConnectionPoints ppEnum);
void FindConnectionPoint(
ref Guid riid,
[Out]
out IConnectionPoint ppCP);
}
[ComImport]
[GuidAttribute("F31DFDE1-07B6-11d2-B2D8-0060083BA1FB")]
[InterfaceTypeAttribute(ComInterfaceType.InterfaceIsIUnknown)]
public interface IOPCShutdown
{
void ShutdownRequest(
[MarshalAs(UnmanagedType.LPWStr)]
string szReason);
}
[ComImport]
[GuidAttribute("F31DFDE2-07B6-11d2-B2D8-0060083BA1FB")]
[InterfaceTypeAttribute(ComInterfaceType.InterfaceIsIUnknown)]
public interface IOPCCommon
{
void SetLocaleID(
[MarshalAs(UnmanagedType.I4)]
int dwLcid);
void GetLocaleID(
[Out][MarshalAs(UnmanagedType.I4)]
out int pdwLcid);
void QueryAvailableLocaleIDs(
[Out][MarshalAs(UnmanagedType.I4)]
out int pdwCount,
[Out]
out IntPtr pdwLcid);
void GetErrorString(
[MarshalAs(UnmanagedType.I4)]
int dwError,
[Out][MarshalAs(UnmanagedType.LPWStr)]
out String ppString);
void SetClientName(
[MarshalAs(UnmanagedType.LPWStr)]
String szName);
}
[ComImport]
[GuidAttribute("13486D50-4821-11D2-A494-3CB306C10000")]
[InterfaceTypeAttribute(ComInterfaceType.InterfaceIsIUnknown)]
public interface IOPCServerList
{
void EnumClassesOfCategories(
[MarshalAs(UnmanagedType.I4)]
int cImplemented,
[MarshalAs(UnmanagedType.LPArray, ArraySubType=UnmanagedType.LPStruct, SizeParamIndex=0)]
Guid[] rgcatidImpl,
[MarshalAs(UnmanagedType.I4)]
int cRequired,
[MarshalAs(UnmanagedType.LPArray, ArraySubType=UnmanagedType.LPStruct, SizeParamIndex=2)]
Guid[] rgcatidReq,
[Out][MarshalAs(UnmanagedType.IUnknown)]
out object ppenumClsid);
void GetClassDetails(
ref Guid clsid,
[Out][MarshalAs(UnmanagedType.LPWStr)]
out string ppszProgID,
[Out][MarshalAs(UnmanagedType.LPWStr)]
out string ppszUserType);
void CLSIDFromProgID(
[MarshalAs(UnmanagedType.LPWStr)]
string szProgId,
[Out]
out Guid clsid);
}
[ComImport]
[GuidAttribute("55C382C8-21C7-4e88-96C1-BECFB1E3F483")]
[InterfaceTypeAttribute(ComInterfaceType.InterfaceIsIUnknown)]
public interface IOPCEnumGUID
{
void Next(
[MarshalAs(UnmanagedType.I4)]
int celt,
[Out]
IntPtr rgelt,
[Out][MarshalAs(UnmanagedType.I4)]
out int pceltFetched);
void Skip(
[MarshalAs(UnmanagedType.I4)]
int celt);
void Reset();
void Clone(
[Out]
out IOPCEnumGUID ppenum);
}
[ComImport]
[GuidAttribute("0002E000-0000-0000-C000-000000000046")]
[InterfaceTypeAttribute(ComInterfaceType.InterfaceIsIUnknown)]
public interface IEnumGUID
{
void Next(
[MarshalAs(UnmanagedType.I4)]
int celt,
[Out]
IntPtr rgelt,
[Out][MarshalAs(UnmanagedType.I4)]
out int pceltFetched);
void Skip(
[MarshalAs(UnmanagedType.I4)]
int celt);
void Reset();
void Clone(
[Out]
out IEnumGUID ppenum);
}
[ComImport]
[GuidAttribute("00000100-0000-0000-C000-000000000046")]
[InterfaceTypeAttribute(ComInterfaceType.InterfaceIsIUnknown)]
public interface IEnumUnknown
{
void RemoteNext(
[MarshalAs(UnmanagedType.I4)]
int celt,
[Out]
IntPtr rgelt,
[Out][MarshalAs(UnmanagedType.I4)]
out int pceltFetched);
void Skip(
[MarshalAs(UnmanagedType.I4)]
int celt);
void Reset();
void Clone(
[Out]
out IEnumUnknown ppenum);
}
[ComImport]
[GuidAttribute("00000101-0000-0000-C000-000000000046")]
[InterfaceTypeAttribute(ComInterfaceType.InterfaceIsIUnknown)]
public interface IEnumString
{
[PreserveSig]
int RemoteNext(
[MarshalAs(UnmanagedType.I4)]
int celt,
IntPtr rgelt,
[Out][MarshalAs(UnmanagedType.I4)]
out int pceltFetched);
void Skip(
[MarshalAs(UnmanagedType.I4)]
int celt);
void Reset();
void Clone(
[Out]
out IEnumString ppenum);
}
[ComImport]
[GuidAttribute("9DD0B56C-AD9E-43ee-8305-487F3188BF7A")]
[InterfaceTypeAttribute(ComInterfaceType.InterfaceIsIUnknown)]
public interface IOPCServerList2
{
void EnumClassesOfCategories(
[MarshalAs(UnmanagedType.I4)]
int cImplemented,
[MarshalAs(UnmanagedType.LPArray, ArraySubType=UnmanagedType.LPStruct, SizeParamIndex=0)]
Guid[] rgcatidImpl,
[MarshalAs(UnmanagedType.I4)]
int cRequired,
[MarshalAs(UnmanagedType.LPArray, ArraySubType=UnmanagedType.LPStruct, SizeParamIndex=0)]
Guid[] rgcatidReq,
[Out]
out IOPCEnumGUID ppenumClsid);
void GetClassDetails(
ref Guid clsid,
[Out][MarshalAs(UnmanagedType.LPWStr)]
out string ppszProgID,
[Out][MarshalAs(UnmanagedType.LPWStr)]
out string ppszUserType,
[Out][MarshalAs(UnmanagedType.LPWStr)]
out string ppszVerIndProgID);
void CLSIDFromProgID(
[MarshalAs(UnmanagedType.LPWStr)]
string szProgId,
[Out]
out Guid clsid);
}
}
4、OpcRcw.Da.dll 对应的DataAccess.cs如下：
/* The complete license agreement can be found here:
* http://opcfoundation.org/License/MIT/1.00/
*/
using System;
using System.Collections.Generic;
using System.Text;
using System.Runtime.InteropServices;
namespace OpcRcw.Comn
{
[StructLayout(LayoutKind.Sequential, CharSet=CharSet.Auto)]
public struct CONNECTDATA
{
[MarshalAs(UnmanagedType.IUnknown)]
object pUnk;
[MarshalAs(UnmanagedType.I4)]
int dwCookie;
}
[ComImport]
[GuidAttribute("B196B287-BAB4-101A-B69C-00AA00341D07")]
[InterfaceTypeAttribute(ComInterfaceType.InterfaceIsIUnknown)]
public interface IEnumConnections
{
void RemoteNext(
[MarshalAs(UnmanagedType.I4)]
int cConnections,
[Out]
IntPtr rgcd,
[Out][MarshalAs(UnmanagedType.I4)]
out int pcFetched);
void Skip(
[MarshalAs(UnmanagedType.I4)]
int cConnections);
void Reset();
void Clone(
[Out]
out IEnumConnections ppEnum);
}
[ComImport]
[GuidAttribute("B196B286-BAB4-101A-B69C-00AA00341D07")]
[InterfaceTypeAttribute(ComInterfaceType.InterfaceIsIUnknown)]
public interface IConnectionPoint
{
void GetConnectionInterface(
[Out]
out Guid pIID);
void GetConnectionPointContainer(
[Out]
out IConnectionPointContainer ppCPC);
void Advise(
[MarshalAs(UnmanagedType.IUnknown)]
object pUnkSink,
[Out][MarshalAs(UnmanagedType.I4)]
out int pdwCookie);
void Unadvise(
[MarshalAs(UnmanagedType.I4)]
int dwCookie);
void EnumConnections(
[Out]
out IEnumConnections ppEnum);
}
[ComImport]
[GuidAttribute("B196B285-BAB4-101A-B69C-00AA00341D07")]
[InterfaceTypeAttribute(ComInterfaceType.InterfaceIsIUnknown)]
public interface IEnumConnectionPoints
{
void RemoteNext(
[MarshalAs(UnmanagedType.I4)]
int cConnections,
[Out]
IntPtr ppCP,
[Out][MarshalAs(UnmanagedType.I4)]
out int pcFetched);
void Skip(
[MarshalAs(UnmanagedType.I4)]
int cConnections);
void Reset();
void Clone(
[Out]
out IEnumConnectionPoints ppEnum);
}
[ComImport]
[GuidAttribute("B196B284-BAB4-101A-B69C-00AA00341D07")]
[InterfaceTypeAttribute(ComInterfaceType.InterfaceIsIUnknown)]
public interface IConnectionPointContainer
{
void EnumConnectionPoints(
[Out]
out IEnumConnectionPoints ppEnum);
void FindConnectionPoint(
ref Guid riid,
[Out]
out IConnectionPoint ppCP);
}
[ComImport]
[GuidAttribute("F31DFDE1-07B6-11d2-B2D8-0060083BA1FB")]
[InterfaceTypeAttribute(ComInterfaceType.InterfaceIsIUnknown)]
public interface IOPCShutdown
{
void ShutdownRequest(
[MarshalAs(UnmanagedType.LPWStr)]
string szReason);
}
[ComImport]
[GuidAttribute("F31DFDE2-07B6-11d2-B2D8-0060083BA1FB")]
[InterfaceTypeAttribute(ComInterfaceType.InterfaceIsIUnknown)]
public interface IOPCCommon
{
void SetLocaleID(
[MarshalAs(UnmanagedType.I4)]
int dwLcid);
void GetLocaleID(
[Out][MarshalAs(UnmanagedType.I4)]
out int pdwLcid);
void QueryAvailableLocaleIDs(
[Out][MarshalAs(UnmanagedType.I4)]
out int pdwCount,
[Out]
out IntPtr pdwLcid);
void GetErrorString(
[MarshalAs(UnmanagedType.I4)]
int dwError,
[Out][MarshalAs(UnmanagedType.LPWStr)]
out String ppString);
void SetClientName(
[MarshalAs(UnmanagedType.LPWStr)]
String szName);
}
[ComImport]
[GuidAttribute("13486D50-4821-11D2-A494-3CB306C10000")]
[InterfaceTypeAttribute(ComInterfaceType.InterfaceIsIUnknown)]
public interface IOPCServerList
{
void EnumClassesOfCategories(
[MarshalAs(UnmanagedType.I4)]
int cImplemented,
[MarshalAs(UnmanagedType.LPArray, ArraySubType=UnmanagedType.LPStruct, SizeParamIndex=0)]
Guid[] rgcatidImpl,
[MarshalAs(UnmanagedType.I4)]
int cRequired,
[MarshalAs(UnmanagedType.LPArray, ArraySubType=UnmanagedType.LPStruct, SizeParamIndex=2)]
Guid[] rgcatidReq,
[Out][MarshalAs(UnmanagedType.IUnknown)]
out object ppenumClsid);
void GetClassDetails(
* The complete license agreement can be found here:
* http://opcfoundation.org/License/MIT/1.00/
* ======================================================================*/
using System;
using System.Collections.Generic;
using System.Text;
using System.Runtime.InteropServices;
namespace OpcRcw.Da
{
[ComImport]
[GuidAttribute("63D5F430-CFE4-11d1-B2C8-0060083BA1FB")]
[InterfaceTypeAttribute(ComInterfaceType.InterfaceIsIUnknown)]
public interface CATID_OPCDAServer10 {}
[ComImport]
[GuidAttribute("63D5F432-CFE4-11d1-B2C8-0060083BA1FB")]
[InterfaceTypeAttribute(ComInterfaceType.InterfaceIsIUnknown)]
public interface CATID_OPCDAServer20 {}
[ComImport]
[GuidAttribute("CC603642-66D7-48f1-B69A-B625E73652D7")]
[InterfaceTypeAttribute(ComInterfaceType.InterfaceIsIUnknown)]
public interface CATID_OPCDAServer30 {}
[ComImport]
[GuidAttribute("3098EDA4-A006-48b2-A27F-247453959408")]
[InterfaceTypeAttribute(ComInterfaceType.InterfaceIsIUnknown)]
public interface CATID_XMLDAServer10 {}
public enum OPCDATASOURCE
{
OPC_DS_CACHE = 1,
OPC_DS_DEVICE
}
public enum OPCBROWSETYPE
{
OPC_BRANCH = 1,
OPC_LEAF,
OPC_FLAT
}
public enum OPCNAMESPACETYPE
{
OPC_NS_HIERARCHIAL = 1,
OPC_NS_FLAT
}
public enum OPCBROWSEDIRECTION
{
OPC_BROWSE_UP = 1,
OPC_BROWSE_DOWN,
OPC_BROWSE_TO
}
public enum OPCEUTYPE
{
OPC_NOENUM = 0,
OPC_ANALOG,
OPC_ENUMERATED
}
public enum OPCSERVERSTATE
{
OPC_STATUS_RUNNING = 1,
OPC_STATUS_FAILED,
OPC_STATUS_NOCONFIG,
OPC_STATUS_SUSPENDED,
OPC_STATUS_TEST,
OPC_STATUS_COMM_FAULT
}
public enum OPCENUMSCOPE
{
OPC_ENUM_PRIVATE_CONNECTIONS = 1,
OPC_ENUM_PUBLIC_CONNECTIONS,
OPC_ENUM_ALL_CONNECTIONS,
OPC_ENUM_PRIVATE,
OPC_ENUM_PUBLIC,
OPC_ENUM_ALL
}
[StructLayout(LayoutKind.Sequential, CharSet=CharSet.Unicode)]
public struct OPCGROUPHEADER
{
[MarshalAs(UnmanagedType.I4)]
public int dwSize;
[MarshalAs(UnmanagedType.I4)]
public int dwItemCount;
[MarshalAs(UnmanagedType.I4)]
public int hClientGroup;
[MarshalAs(UnmanagedType.I4)]
public int dwTransactionID;
[MarshalAs(UnmanagedType.I4)]
public int hrStatus;
}
[StructLayout(LayoutKind.Sequential, CharSet=CharSet.Unicode)]
public struct OPCITEMHEADER1
{
[MarshalAs(UnmanagedType.I4)]
public int hClient;
[MarshalAs(UnmanagedType.I4)]
public int dwValueOffset;
[MarshalAs(UnmanagedType.I2)]
public short wQuality;
[MarshalAs(UnmanagedType.I2)]
public short wReserved;
public System.Runtime.InteropServices.ComTypes.FILETIME ftTimeStampItem;
}
[StructLayout(LayoutKind.Sequential, CharSet=CharSet.Unicode)]
public struct OPCITEMHEADER2
{
[MarshalAs(UnmanagedType.I4)]
public int hClient;
[MarshalAs(UnmanagedType.I4)]
public int dwValueOffset;
[MarshalAs(UnmanagedType.I2)]
public short wQuality;
[MarshalAs(UnmanagedType.I2)]
public short wReserved;
}
[StructLayout(LayoutKind.Sequential, CharSet=CharSet.Unicode)]
public struct OPCGROUPHEADERWRITE
{
[MarshalAs(UnmanagedType.I4)]
public int dwItemCount;
[MarshalAs(UnmanagedType.I4)]
public int hClientGroup;
[MarshalAs(UnmanagedType.I4)]
public int dwTransactionID;
[MarshalAs(UnmanagedType.I4)]
public int hrStatus;
}
[StructLayout(LayoutKind.Sequential, CharSet=CharSet.Unicode)]
public struct OPCITEMHEADERWRITE
{
[MarshalAs(UnmanagedType.I4)]
public int hClient;
[MarshalAs(UnmanagedType.I4)]
public int dwError;
}
[StructLayout(LayoutKind.Sequential, CharSet=CharSet.Unicode)]
public struct OPCITEMSTATE
{
[MarshalAs(UnmanagedType.I4)]
public int hClient;
public System.Runtime.InteropServices.ComTypes.FILETIME ftTimeStamp;
[MarshalAs(UnmanagedType.I2)]
public short wQuality;
[MarshalAs(UnmanagedType.I2)]
public short wReserved;
[MarshalAs(UnmanagedType.Struct)]
public object vDataValue;
}
[StructLayout(LayoutKind.Sequential, CharSet=CharSet.Unicode)]
public struct OPCSERVERSTATUS
{
public System.Runtime.InteropServices.ComTypes.FILETIME ftStartTime;
public System.Runtime.InteropServices.ComTypes.FILETIME ftCurrentTime;
public System.Runtime.InteropServices.ComTypes.FILETIME ftLastUpdateTime;
public OPCSERVERSTATE dwServerState;
[MarshalAs(UnmanagedType.I4)]
public int dwGroupCount;
[MarshalAs(UnmanagedType.I4)]
public int dwBandWidth;
[MarshalAs(UnmanagedType.I2)]
public short wMajorVersion;
[MarshalAs(UnmanagedType.I2)]
public short wMinorVersion;
[MarshalAs(UnmanagedType.I2)]
public short wBuildNumber;
[MarshalAs(UnmanagedType.I2)]
public short wReserved;
[MarshalAs(UnmanagedType.LPWStr)]
public string szVendorInfo;
}
[StructLayout(LayoutKind.Sequential, CharSet=CharSet.Unicode)]
public struct OPCITEMDEF
{
[MarshalAs(UnmanagedType.LPWStr)]
public string szAccessPath;
[MarshalAs(UnmanagedType.LPWStr)]
public string szItemID;
[MarshalAs(UnmanagedType.I4)]
public int bActive;
[MarshalAs(UnmanagedType.I4)]
public int hClient;
[MarshalAs(UnmanagedType.I4)]
public int dwBlobSize;
public IntPtr pBlob;
[MarshalAs(UnmanagedType.I2)]
public short vtRequestedDataType;
[MarshalAs(UnmanagedType.I2)]
public short wReserved;
};
[StructLayout(LayoutKind.Sequential, CharSet=CharSet.Unicode)]
public struct OPCITEMATTRIBUTES
{
[MarshalAs(UnmanagedType.LPWStr)]
public string szAccessPath;
[MarshalAs(UnmanagedType.LPWStr)]
public string szItemID;
[MarshalAs(UnmanagedType.I4)]
public int bActive;
[MarshalAs(UnmanagedType.I4)]
public int hClient;
[MarshalAs(UnmanagedType.I4)]
public int hServer;
[MarshalAs(UnmanagedType.I4)]
public int dwAccessRights;
[MarshalAs(UnmanagedType.I4)]
public int dwBlobSize;
public IntPtr pBlob;
[MarshalAs(UnmanagedType.I2)]
public short vtRequestedDataType;
[MarshalAs(UnmanagedType.I2)]
public short vtCanonicalDataType;
public OPCEUTYPE dwEUType;
[MarshalAs(UnmanagedType.Struct)]
public object vEUInfo;
}
[StructLayout(LayoutKind.Sequential, CharSet=CharSet.Unicode)]
public struct OPCITEMRESULT
{
[MarshalAs(UnmanagedType.I4)]
public int hServer;
[MarshalAs(UnmanagedType.I2)]
public short vtCanonicalDataType;
[MarshalAs(UnmanagedType.I2)]
public short wReserved;
[MarshalAs(UnmanagedType.I4)]
public int dwAccessRights;
[MarshalAs(UnmanagedType.I4)]
public int dwBlobSize;
public IntPtr pBlob;
}
[StructLayout(LayoutKind.Sequential, CharSet=CharSet.Unicode)]
public struct OPCITEMPROPERTY
{
[MarshalAs(UnmanagedType.I2)]
public short vtDataType;
[MarshalAs(UnmanagedType.I2)]
public short wReserved;
[MarshalAs(UnmanagedType.I4)]
public int dwPropertyID;
[MarshalAs(UnmanagedType.LPWStr)]
public string szItemID;
[MarshalAs(UnmanagedType.LPWStr)]
public string szDescription;
[MarshalAs(UnmanagedType.Struct)]
public object vValue;
[MarshalAs(UnmanagedType.I4)]
public int hrErrorID;
[MarshalAs(UnmanagedType.I4)]
public int dwReserved;
}
[StructLayout(LayoutKind.Sequential, CharSet=CharSet.Unicode)]
public struct OPCITEMPROPERTIES
{
[MarshalAs(UnmanagedType.I4)]
public int hrErrorID;
[MarshalAs(UnmanagedType.I4)]
public int dwNumProperties;
public IntPtr pItemProperties;
[MarshalAs(UnmanagedType.I4)]
public int dwReserved;
}
[StructLayout(LayoutKind.Sequential, CharSet=CharSet.Unicode)]
public struct OPCBROWSEELEMENT
{
[MarshalAs(UnmanagedType.LPWStr)]
public string szName;
[MarshalAs(UnmanagedType.LPWStr)]
public string szItemID;
[MarshalAs(UnmanagedType.I4)]
public int dwFlagValue;
[MarshalAs(UnmanagedType.I4)]
public int dwReserved;
public OPCITEMPROPERTIES ItemProperties;
}
[StructLayout(LayoutKind.Sequential, CharSet=CharSet.Unicode)]
public struct OPCITEMVQT
{
[MarshalAs(UnmanagedType.Struct)]
public object vDataValue;
[MarshalAs(UnmanagedType.I4)]
public int bQualitySpecified;
[MarshalAs(UnmanagedType.I2)]
public short wQuality;
[MarshalAs(UnmanagedType.I2)]
public short wReserved;
[MarshalAs(UnmanagedType.I4)]
public int bTimeStampSpecified;
[MarshalAs(UnmanagedType.I4)]
public int dwReserved;
public System.Runtime.InteropServices.ComTypes.FILETIME ftTimeStamp;
}
public enum OPCBROWSEFILTER
{
OPC_BROWSE_FILTER_ALL = 1,
OPC_BROWSE_FILTER_BRANCHES,
OPC_BROWSE_FILTER_ITEMS,
}
[ComImport]
[GuidAttribute("39c13a4d-011e-11d0-9675-0020afd8adb3")]
[InterfaceTypeAttribute(ComInterfaceType.InterfaceIsIUnknown)]
public interface IOPCServer
{
void AddGroup(
[MarshalAs(UnmanagedType.LPWStr)]
string szName,
[MarshalAs(UnmanagedType.I4)]
int bActive,
[MarshalAs(UnmanagedType.I4)]
int dwRequestedUpdateRate,
[MarshalAs(UnmanagedType.I4)]
int hClientGroup,
IntPtr pTimeBias,
IntPtr pPercentDeadband,
[MarshalAs(UnmanagedType.I4)]
int dwLCID,
[Out][MarshalAs(UnmanagedType.I4)]
out int phServerGroup,
[Out][MarshalAs(UnmanagedType.I4)]
out int pRevisedUpdateRate,
ref Guid riid,
[Out][MarshalAs(UnmanagedType.IUnknown, IidParameterIndex=9)]
out object ppUnk);
void GetErrorString(
[MarshalAs(UnmanagedType.I4)]
int dwError,
[MarshalAs(UnmanagedType.I4)]
int dwLocale,
[Out][MarshalAs(UnmanagedType.LPWStr)]
out string ppString);
void GetGroupByName(
[MarshalAs(UnmanagedType.LPWStr)]
string szName,
ref Guid riid,
[Out][MarshalAs(UnmanagedType.IUnknown, IidParameterIndex=1)]
out object ppUnk);
void GetStatus(
[Out]
out IntPtr ppServerStatus);
void RemoveGroup(
[MarshalAs(UnmanagedType.I4)]
int hServerGroup,
[MarshalAs(UnmanagedType.I4)]
int bForce);
void CreateGroupEnumerator(
OPCENUMSCOPE dwScope,
ref Guid riid,
[Out][MarshalAs(UnmanagedType.IUnknown, IidParameterIndex=1)]
out object ppUnk);
}
[ComImport]
[GuidAttribute("39c13a4e-011e-11d0-9675-0020afd8adb3")]
[InterfaceTypeAttribute(ComInterfaceType.InterfaceIsIUnknown)]
public interface IOPCServerPublicGroups
{
void GetPublicGroupByName(
[MarshalAs(UnmanagedType.LPWStr)]
string szName,
ref Guid riid,
[Out][MarshalAs(UnmanagedType.IUnknown, IidParameterIndex=1)]
out object ppUnk);
void RemovePublicGroup(
[MarshalAs(UnmanagedType.I4)]
int hServerGroup,
[MarshalAs(UnmanagedType.I4)]
int bForce);
}
[ComImport]
[GuidAttribute("39c13a4f-011e-11d0-9675-0020afd8adb3")]
[InterfaceTypeAttribute(ComInterfaceType.InterfaceIsIUnknown)]
public interface IOPCBrowseServerAddressSpace
{
void QueryOrganization(
[Out]
out OPCNAMESPACETYPE pNameSpaceType);
void ChangeBrowsePosition(
OPCBROWSEDIRECTION dwBrowseDirection,
[MarshalAs(UnmanagedType.LPWStr)]
string szString);
void BrowseOPCItemIDs(
OPCBROWSETYPE dwBrowseFilterType,
[MarshalAs(UnmanagedType.LPWStr)]
string szFilterCriteria,
[MarshalAs(UnmanagedType.I2)]
short vtDataTypeFilter,
[MarshalAs(UnmanagedType.I4)]
int dwAccessRightsFilter,
[Out]
out OpcRcw.Comn.IEnumString ppIEnumString);
void GetItemID(
[MarshalAs(UnmanagedType.LPWStr)]
string szItemDataID,
[Out][MarshalAs(UnmanagedType.LPWStr)]
out string szItemID);
void BrowseAccessPaths(
[MarshalAs(UnmanagedType.LPWStr)]
string szItemID,
[Out]
out OpcRcw.Comn.IEnumString pIEnumString);
}
[ComImport]
[GuidAttribute("39c13a50-011e-11d0-9675-0020afd8adb3")]
[InterfaceTypeAttribute(ComInterfaceType.InterfaceIsIUnknown)]
public interface IOPCGroupStateMgt
{
void GetState(
[Out][MarshalAs(UnmanagedType.I4)]
out int pUpdateRate,
[Out][MarshalAs(UnmanagedType.I4)]
out int pActive,
[Out][MarshalAs(UnmanagedType.LPWStr)]
out string ppName,
[Out][MarshalAs(UnmanagedType.I4)]
out int pTimeBias,
[Out][MarshalAs(UnmanagedType.R4)]
out float pPercentDeadband,
[Out][MarshalAs(UnmanagedType.I4)]
out int pLCID,
[Out][MarshalAs(UnmanagedType.I4)]
out int phClientGroup,
[Out][MarshalAs(UnmanagedType.I4)]
out int phServerGroup);
void SetState(
IntPtr pRequestedUpdateRate,
[Out][MarshalAs(UnmanagedType.I4)]
out int pRevisedUpdateRate,
IntPtr pActive,
IntPtr pTimeBias,
IntPtr pPercentDeadband,
IntPtr pLCID,
IntPtr phClientGroup);
void SetName(
[MarshalAs(UnmanagedType.LPWStr)]
string szName);
void CloneGroup(
[MarshalAs(UnmanagedType.LPWStr)]
string szName,
ref Guid riid,
[Out][MarshalAs(UnmanagedType.IUnknown, IidParameterIndex=1)]
out object ppUnk);
}
[ComImport]
[GuidAttribute("39c13a51-011e-11d0-9675-0020afd8adb3")]
[InterfaceTypeAttribute(ComInterfaceType.InterfaceIsIUnknown)]
public interface IOPCPublicGroupStateMgt
{
void GetState(
[Out][MarshalAs(UnmanagedType.I4)]
out int pPublic);
void MoveToPublic();
}
[ComImport]
[GuidAttribute("39c13a52-011e-11d0-9675-0020afd8adb3")]
[InterfaceTypeAttribute(ComInterfaceType.InterfaceIsIUnknown)]
public interface IOPCSyncIO
{
void Read(
OPCDATASOURCE dwSource,
[MarshalAs(UnmanagedType.I4)]
int dwCount,
[MarshalAs(UnmanagedType.LPArray, ArraySubType=UnmanagedType.I4, SizeParamIndex=1)]
int[] phServer,
[Out]
out IntPtr ppItemValues,
[Out]
out IntPtr ppErrors);
void Write(
[MarshalAs(UnmanagedType.I4)]
int dwCount,
[MarshalAs(UnmanagedType.LPArray, ArraySubType=UnmanagedType.I4, SizeParamIndex=0)]
int[] phServer,
[MarshalAs(UnmanagedType.LPArray, ArraySubType=UnmanagedType.Struct, SizeParamIndex=0)]
object[] pItemValues,
[Out]
out IntPtr ppErrors);
}
[ComImport]
[GuidAttribute("39c13a53-011e-11d0-9675-0020afd8adb3")]
[InterfaceTypeAttribute(ComInterfaceType.InterfaceIsIUnknown)]
public interface IOPCAsyncIO
{
void Read(
[MarshalAs(UnmanagedType.I4)]
int dwConnection,
OPCDATASOURCE dwSource,
[MarshalAs(UnmanagedType.I4)]
int dwCount,
[MarshalAs(UnmanagedType.LPArray, ArraySubType=UnmanagedType.I4, SizeParamIndex=2)]
int[] phServer,
[Out][MarshalAs(UnmanagedType.I4)]
out int pTransactionID,
[Out]
out IntPtr ppErrors);
void Write(
[MarshalAs(UnmanagedType.I4)]
int dwConnection,
[MarshalAs(UnmanagedType.I4)]
int dwCount,
[MarshalAs(UnmanagedType.LPArray, ArraySubType=UnmanagedType.I4, SizeParamIndex=1)]
int[] phServer,
[MarshalAs(UnmanagedType.LPArray, ArraySubType=UnmanagedType.Struct, SizeParamIndex=1)]
object[] pItemValues,
[Out][MarshalAs(UnmanagedType.I4)]
out int pTransactionID,
[Out]
out IntPtr ppErrors);
void Refresh(
[MarshalAs(UnmanagedType.I4)]
int dwConnection,
OPCDATASOURCE dwSource,
[Out][MarshalAs(UnmanagedType.I4)]
out int pTransactionID);
void Cancel(
[MarshalAs(UnmanagedType.I4)]
int dwTransactionID);
}
[ComImport]
[GuidAttribute("39c13a54-011e-11d0-9675-0020afd8adb3")]
[InterfaceTypeAttribute(ComInterfaceType.InterfaceIsIUnknown)]
public interface IOPCItemMgt
{
void AddItems(
[MarshalAs(UnmanagedType.I4)]
int dwCount,
[MarshalAs(UnmanagedType.LPArray, ArraySubType=UnmanagedType.LPStruct, SizeParamIndex=0)]
OPCITEMDEF[] pItemArray,
[Out]
out IntPtr ppAddResults,
[Out]
out IntPtr ppErrors);
void ValidateItems(
[MarshalAs(UnmanagedType.I4)]
int dwCount,
[MarshalAs(UnmanagedType.LPArray, ArraySubType=UnmanagedType.LPStruct, SizeParamIndex=0)]
OPCITEMDEF[] pItemArray,
[MarshalAs(UnmanagedType.I4)]
int bBlobUpdate,
[Out]
out IntPtr ppValidationResults,
[Out]
out IntPtr ppErrors);
void RemoveItems(
[MarshalAs(UnmanagedType.I4)]
int dwCount,
[MarshalAs(UnmanagedType.LPArray, ArraySubType=UnmanagedType.I4, SizeParamIndex=0)]
int[] phServer,
[Out]
out IntPtr ppErrors);
void SetActiveState(
[MarshalAs(UnmanagedType.I4)]
int dwCount,
[MarshalAs(UnmanagedType.LPArray, ArraySubType=UnmanagedType.I4, SizeParamIndex=0)]
int[] phServer,
[MarshalAs(UnmanagedType.I4)]
int bActive,
[Out]
out IntPtr ppErrors);
void SetClientHandles(
[MarshalAs(UnmanagedType.I4)]
int dwCount,
[MarshalAs(UnmanagedType.LPArray, ArraySubType=UnmanagedType.I4, SizeParamIndex=0)]
int[] phServer,
[MarshalAs(UnmanagedType.LPArray, ArraySubType=UnmanagedType.I4, SizeParamIndex=0)]
int[] phClient,
[Out]
out IntPtr ppErrors);
void SetDatatypes(
[MarshalAs(UnmanagedType.I4)]
int dwCount,
[MarshalAs(UnmanagedType.LPArray, ArraySubType=UnmanagedType.I4, SizeParamIndex=0)]
int[] phServer,
[MarshalAs(UnmanagedType.LPArray, ArraySubType=UnmanagedType.I2, SizeParamIndex=0)]
short[] pRequestedDatatypes,
[Out]
out IntPtr ppErrors);
void CreateEnumerator(
ref Guid riid,
[Out][MarshalAs(UnmanagedType.IUnknown, IidParameterIndex=0)]
out object ppUnk);
}
[ComImport]
[GuidAttribute("39c13a55-011e-11d0-9675-0020afd8adb3")]
[InterfaceTypeAttribute(ComInterfaceType.InterfaceIsIUnknown)]
public interface IEnumOPCItemAttributes
{
void Next(
[MarshalAs(UnmanagedType.I4)]
int celt,
[Out]
out IntPtr ppItemArray,
[Out][MarshalAs(UnmanagedType.I4)]
out int pceltFetched);
void Skip(
[MarshalAs(UnmanagedType.I4)]
int celt);
void Reset();
void Clone(
[Out]
out IEnumOPCItemAttributes ppEnumItemAttributes);
}
[ComImport]
[GuidAttribute("39c13a70-011e-11d0-9675-0020afd8adb3")]
[InterfaceTypeAttribute(ComInterfaceType.InterfaceIsIUnknown)]
public interface IOPCDataCallback
{
void OnDataChange(
[MarshalAs(UnmanagedType.I4)]
int dwTransid,
[MarshalAs(UnmanagedType.I4)]
int hGroup,
[MarshalAs(UnmanagedType.I4)]
int hrMasterquality,
[MarshalAs(UnmanagedType.I4)]
int hrMastererror,
[MarshalAs(UnmanagedType.I4)]
int dwCount,
[MarshalAs(UnmanagedType.LPArray, ArraySubType=UnmanagedType.I4, SizeParamIndex=4)]
int[] phClientItems,
[MarshalAs(UnmanagedType.LPArray, ArraySubType=UnmanagedType.Struct, SizeParamIndex=4)]
object[] pvValues,
[MarshalAs(UnmanagedType.LPArray, ArraySubType=UnmanagedType.I2, SizeParamIndex=4)]
short[] pwQualities,
[MarshalAs(UnmanagedType.LPArray, ArraySubType=UnmanagedType.LPStruct, SizeParamIndex=4)]
System.Runtime.InteropServices.ComTypes.FILETIME[] pftTimeStamps,
[MarshalAs(UnmanagedType.LPArray, ArraySubType=UnmanagedType.I4, SizeParamIndex=4)]
int[] pErrors);
void OnReadComplete(
[MarshalAs(UnmanagedType.I4)]
int dwTransid,
[MarshalAs(UnmanagedType.I4)]
int hGroup,
[MarshalAs(UnmanagedType.I4)]
int hrMasterquality,
[MarshalAs(UnmanagedType.I4)]
int hrMastererror,
[MarshalAs(UnmanagedType.I4)]
int dwCount,
[MarshalAs(UnmanagedType.LPArray, ArraySubType=UnmanagedType.I4, SizeParamIndex=4)]
int[] phClientItems,
[MarshalAs(UnmanagedType.LPArray, ArraySubType=UnmanagedType.Struct, SizeParamIndex=4)]
object[] pvValues,
[MarshalAs(UnmanagedType.LPArray, ArraySubType=UnmanagedType.I2, SizeParamIndex=4)]
short[] pwQualities,
[MarshalAs(UnmanagedType.LPArray, ArraySubType=UnmanagedType.LPStruct, SizeParamIndex=4)]
System.Runtime.InteropServices.ComTypes.FILETIME[] pftTimeStamps,
[MarshalAs(UnmanagedType.LPArray, ArraySubType=UnmanagedType.I4, SizeParamIndex=4)]
int[] pErrors);
void OnWriteComplete(
[MarshalAs(UnmanagedType.I4)]
int dwTransid,
[MarshalAs(UnmanagedType.I4)]
int hGroup,
[MarshalAs(UnmanagedType.I4)]
int hrMastererr,
[MarshalAs(UnmanagedType.I4)]
int dwCount,
[MarshalAs(UnmanagedType.LPArray, ArraySubType=UnmanagedType.I4, SizeParamIndex=3)]
int[] pClienthandles,
[MarshalAs(UnmanagedType.LPArray, ArraySubType=UnmanagedType.I4, SizeParamIndex=3)]
int[] pErrors);
void OnCancelComplete(
[MarshalAs(UnmanagedType.I4)]
int dwTransid,
[MarshalAs(UnmanagedType.I4)]
int hGroup);
}
[ComImport]
[GuidAttribute("39c13a71-011e-11d0-9675-0020afd8adb3")]
[InterfaceTypeAttribute(ComInterfaceType.InterfaceIsIUnknown)]
public interface IOPCAsyncIO2
{
void Read(
[MarshalAs(UnmanagedType.I4)]
int dwCount,
[MarshalAs(UnmanagedType.LPArray, ArraySubType=UnmanagedType.I4, SizeParamIndex=0)]
int[] phServer,
[MarshalAs(UnmanagedType.I4)]
int dwTransactionID,
[Out][MarshalAs(UnmanagedType.I4)]
out int pdwCancelID,
[Out]
out IntPtr ppErrors);
void Write(
[MarshalAs(UnmanagedType.I4)]
int dwCount,
[MarshalAs(UnmanagedType.LPArray, ArraySubType=UnmanagedType.I4, SizeParamIndex=0)]
int[] phServer,
[MarshalAs(UnmanagedType.LPArray, ArraySubType=UnmanagedType.Struct, SizeParamIndex=0)]
object[] pItemValues,
[MarshalAs(UnmanagedType.I4)]
int dwTransactionID,
[Out][MarshalAs(UnmanagedType.I4)]
out int pdwCancelID,
[Out]
out IntPtr ppErrors);
void Refresh2(
OPCDATASOURCE dwSource,
[MarshalAs(UnmanagedType.I4)]
int dwTransactionID,
[Out][MarshalAs(UnmanagedType.I4)]
out int pdwCancelID);
void Cancel2(
[MarshalAs(UnmanagedType.I4)]
int dwCancelID);
void SetEnable(
[MarshalAs(UnmanagedType.I4)]
int bEnable);
void GetEnable(
[Out][MarshalAs(UnmanagedType.I4)]
out int pbEnable);
}
[ComImport]
[GuidAttribute("39c13a72-011e-11d0-9675-0020afd8adb3")]
[InterfaceTypeAttribute(ComInterfaceType.InterfaceIsIUnknown)]
public interface IOPCItemProperties
{
void QueryAvailableProperties(
[MarshalAs(UnmanagedType.LPWStr)]
string szItemID,
[Out][MarshalAs(UnmanagedType.I4)]
out int pdwCount,
[Out]
out IntPtr ppPropertyIDs,
[Out]
out IntPtr ppDescriptions,
[Out]
out IntPtr ppvtDataTypes);
void GetItemProperties(
[MarshalAs(UnmanagedType.LPWStr)]
string szItemID,
[MarshalAs(UnmanagedType.I4)]
int dwCount,
[MarshalAs(UnmanagedType.LPArray, ArraySubType=UnmanagedType.I4, SizeParamIndex=1)]
int[] pdwPropertyIDs,
[Out]
out IntPtr ppvData,
[Out]
out IntPtr ppErrors);
void LookupItemIDs(
[MarshalAs(UnmanagedType.LPWStr)]
string szItemID,
[MarshalAs(UnmanagedType.I4)]
int dwCount,
[MarshalAs(UnmanagedType.LPArray, ArraySubType=UnmanagedType.I4, SizeParamIndex=1)]
int[] pdwPropertyIDs,
[Out]
out IntPtr ppszNewItemIDs,
[Out]
out IntPtr ppErrors);
}
[ComImport]
[GuidAttribute("5946DA93-8B39-4ec8-AB3D-AA73DF5BC86F")]
[InterfaceTypeAttribute(ComInterfaceType.InterfaceIsIUnknown)]
public interface IOPCItemDeadbandMgt
{
void SetItemDeadband(
[MarshalAs(UnmanagedType.I4)]
int dwCount,
[MarshalAs(UnmanagedType.LPArray, ArraySubType=UnmanagedType.I4, SizeParamIndex=0)]
int[] phServer,
[MarshalAs(UnmanagedType.LPArray, ArraySubType=UnmanagedType.R4, SizeParamIndex=0)]
float[] pPercentDeadband,
[Out]
out IntPtr ppErrors);
void GetItemDeadband(
[MarshalAs(UnmanagedType.I4)]
int dwCount,
[MarshalAs(UnmanagedType.LPArray, ArraySubType=UnmanagedType.I4, SizeParamIndex=0)]
int[] phServer,
[Out]
out IntPtr ppPercentDeadband,
[Out]
out IntPtr ppErrors);
void ClearItemDeadband(
[MarshalAs(UnmanagedType.I4)]
int dwCount,
[MarshalAs(UnmanagedType.LPArray, ArraySubType=UnmanagedType.I4, SizeParamIndex=0)]
int[] phServer,
[Out]
out IntPtr ppErrors);
}
[ComImport]
[GuidAttribute("3E22D313-F08B-41a5-86C8-95E95CB49FFC")]
[InterfaceTypeAttribute(ComInterfaceType.InterfaceIsIUnknown)]
public interface IOPCItemSamplingMgt
{
void SetItemSamplingRate(
[MarshalAs(UnmanagedType.I4)]
int dwCount,
[MarshalAs(UnmanagedType.LPArray, ArraySubType=UnmanagedType.I4, SizeParamIndex=0)]
int[] phServer,
[MarshalAs(UnmanagedType.LPArray, ArraySubType=UnmanagedType.I4, SizeParamIndex=0)]
int[] pdwRequestedSamplingRate,
[Out]
out IntPtr ppdwRevisedSamplingRate,
[Out]
out IntPtr ppErrors);
void GetItemSamplingRate(
[MarshalAs(UnmanagedType.I4)]
int dwCount,
[MarshalAs(UnmanagedType.LPArray, ArraySubType=UnmanagedType.I4, SizeParamIndex=0)]
int[] phServer,
[Out]
out IntPtr ppdwSamplingRate,
[Out]
out IntPtr ppErrors);
void ClearItemSamplingRate(
[MarshalAs(UnmanagedType.I4)]
int dwCount,
[MarshalAs(UnmanagedType.LPArray, ArraySubType=UnmanagedType.I4, SizeParamIndex=0)]
int[] phServer,
[Out]
out IntPtr ppErrors);
void SetItemBufferEnable(
[MarshalAs(UnmanagedType.I4)]
int dwCount,
[MarshalAs(UnmanagedType.LPArray, ArraySubType=UnmanagedType.I4, SizeParamIndex=0)]
int[] phServer,
[MarshalAs(UnmanagedType.LPArray, ArraySubType=UnmanagedType.I4, SizeParamIndex=0)]
int[] pbEnable,
[Out]
out IntPtr ppErrors);
void GetItemBufferEnable(
[MarshalAs(UnmanagedType.I4)]
int dwCount,
[MarshalAs(UnmanagedType.LPArray, ArraySubType=UnmanagedType.I4, SizeParamIndex=0)]
int[] phServer,
[Out]
out IntPtr ppbEnable,
[Out]
out IntPtr ppErrors);
}
[ComImport]
[GuidAttribute("39227004-A18F-4b57-8B0A-5235670F4468")]
[InterfaceTypeAttribute(ComInterfaceType.InterfaceIsIUnknown)]
public interface IOPCBrowse
{
void GetProperties(
[MarshalAs(UnmanagedType.I4)]
int dwItemCount,
[MarshalAs(UnmanagedType.LPArray, ArraySubType=UnmanagedType.LPWStr, SizeParamIndex=0)]
string[] pszItemIDs,
[MarshalAs(UnmanagedType.I4)]
int bReturnPropertyValues,
[MarshalAs(UnmanagedType.I4)]
int dwPropertyCount,
[MarshalAs(UnmanagedType.LPArray, ArraySubType=UnmanagedType.I4, SizeParamIndex=3)]
int[] dwPropertyIDs,
[Out]
out IntPtr ppItemProperties);
void Browse(
[MarshalAs(UnmanagedType.LPWStr)]
string szItemID,
ref IntPtr pszContinuationPoint,
[MarshalAs(UnmanagedType.I4)]
int dwMaxElementsReturned,
OPCBROWSEFILTER dwBrowseFilter,
[MarshalAs(UnmanagedType.LPWStr)]
string szElementNameFilter,
[MarshalAs(UnmanagedType.LPWStr)]
string szVendorFilter,
[MarshalAs(UnmanagedType.I4)]
int bReturnAllProperties,
[MarshalAs(UnmanagedType.I4)]
int bReturnPropertyValues,
[MarshalAs(UnmanagedType.I4)]
int dwPropertyCount,
[MarshalAs(UnmanagedType.LPArray, ArraySubType=UnmanagedType.I4, SizeParamIndex=8)]
int[] pdwPropertyIDs,
[Out][MarshalAs(UnmanagedType.I4)]
out int pbMoreElements,
[Out][MarshalAs(UnmanagedType.I4)]
out int pdwCount,
[Out]
out IntPtr ppBrowseElements);
}
[ComImport]
[GuidAttribute("85C0B427-2893-4cbc-BD78-E5FC5146F08F")]
[InterfaceTypeAttribute(ComInterfaceType.InterfaceIsIUnknown)]
public interface IOPCItemIO
{
void Read(
[MarshalAs(UnmanagedType.I4)]
int dwCount,
[MarshalAs(UnmanagedType.LPArray, ArraySubType=UnmanagedType.LPWStr, SizeParamIndex=0)]
string[] pszItemIDs,
[MarshalAs(UnmanagedType.LPArray, ArraySubType=UnmanagedType.I4, SizeParamIndex=0)]
int[] pdwMaxAge,
[Out]
out IntPtr ppvValues,
[Out]
out IntPtr ppwQualities,
[Out]
out IntPtr ppftTimeStamps,
[Out]
out IntPtr ppErrors);
void WriteVQT(
[MarshalAs(UnmanagedType.I4)]
int dwCount,
[MarshalAs(UnmanagedType.LPArray, ArraySubType=UnmanagedType.LPWStr, SizeParamIndex=0)]
string[] pszItemIDs,
[MarshalAs(UnmanagedType.LPArray, ArraySubType=UnmanagedType.LPStruct, SizeParamIndex=0)]
OPCITEMVQT[] pItemVQT,
[Out]
out IntPtr ppErrors);
}
[ComImport]
[GuidAttribute("730F5F0F-55B1-4c81-9E18-FF8A0904E1FA")]
[InterfaceTypeAttribute(ComInterfaceType.InterfaceIsIUnknown)]
public interface IOPCSyncIO2 // : IOPCSyncIO
{
void Read(
OPCDATASOURCE dwSource,
[MarshalAs(UnmanagedType.I4)]
int dwCount,
[MarshalAs(UnmanagedType.LPArray, ArraySubType=UnmanagedType.I4, SizeParamIndex=1)]
int[] phServer,
[Out]
out IntPtr ppItemValues,
[Out]
out IntPtr ppErrors);
void Write(
[MarshalAs(UnmanagedType.I4)]
int dwCount,
[MarshalAs(UnmanagedType.LPArray, ArraySubType=UnmanagedType.I4, SizeParamIndex=0)]
int[] phServer,
[MarshalAs(UnmanagedType.LPArray, ArraySubType=UnmanagedType.Struct, SizeParamIndex=0)]
object[] pItemValues,
[Out]
out IntPtr ppErrors);
void ReadMaxAge(
[MarshalAs(UnmanagedType.I4)]
int dwCount,
[MarshalAs(UnmanagedType.LPArray, ArraySubType=UnmanagedType.I4, SizeParamIndex=0)]
int[] phServer,
[MarshalAs(UnmanagedType.LPArray, ArraySubType=UnmanagedType.I4, SizeParamIndex=0)]
int[] pdwMaxAge,
[Out]
out IntPtr ppvValues,
[Out]
out IntPtr ppwQualities,
[Out]
out IntPtr ppftTimeStamps,
[Out]
out IntPtr ppErrors);
void WriteVQT(
[MarshalAs(UnmanagedType.I4)]
int dwCount,
[MarshalAs(UnmanagedType.LPArray, ArraySubType=UnmanagedType.I4, SizeParamIndex=0)]
int[] phServer,
[MarshalAs(UnmanagedType.LPArray, ArraySubType=UnmanagedType.LPStruct, SizeParamIndex=0)]
OPCITEMVQT[] pItemVQT,
[Out]
out IntPtr ppErrors);
}
[ComImport]
[GuidAttribute("0967B97B-36EF-423e-B6F8-6BFF1E40D39D")]
[InterfaceTypeAttribute(ComInterfaceType.InterfaceIsIUnknown)]
public interface IOPCAsyncIO3 // : IOPCAsyncIO2
{
void Read(
[MarshalAs(UnmanagedType.I4)]
int dwCount,
[MarshalAs(UnmanagedType.LPArray, ArraySubType=UnmanagedType.I4, SizeParamIndex=0)]
int[] phServer,
[MarshalAs(UnmanagedType.I4)]
int dwTransactionID,
[Out][MarshalAs(UnmanagedType.I4)]
out int pdwCancelID,
[Out]
out IntPtr ppErrors);
void Write(
[MarshalAs(UnmanagedType.I4)]
int dwCount,
[MarshalAs(UnmanagedType.LPArray, ArraySubType=UnmanagedType.I4, SizeParamIndex=0)]
int[] phServer,
[MarshalAs(UnmanagedType.LPArray, ArraySubType=UnmanagedType.Struct, SizeParamIndex=0)]
object[] pItemValues,
[MarshalAs(UnmanagedType.I4)]
int dwTransactionID,
[Out][MarshalAs(UnmanagedType.I4)]
out int pdwCancelID,
[Out]
out IntPtr ppErrors);
void Refresh2(
OPCDATASOURCE dwSource,
[MarshalAs(UnmanagedType.I4)]
int dwTransactionID,
[Out][MarshalAs(UnmanagedType.I4)]
out int pdwCancelID);
void Cancel2(
[MarshalAs(UnmanagedType.I4)]
int dwCancelID);
void SetEnable(
[MarshalAs(UnmanagedType.I4)]
int bEnable);
void GetEnable(
[Out][MarshalAs(UnmanagedType.I4)]
out int pbEnable);
void ReadMaxAge(
[MarshalAs(UnmanagedType.I4)]
int dwCount,
[MarshalAs(UnmanagedType.LPArray, ArraySubType=UnmanagedType.I4, SizeParamIndex=0)]
int[] phServer,
[MarshalAs(UnmanagedType.LPArray, ArraySubType=UnmanagedType.I4, SizeParamIndex=0)]
int[] pdwMaxAge,
[MarshalAs(UnmanagedType.I4)]
int dwTransactionID,
[Out]
[MarshalAs(UnmanagedType.I4)]
out int pdwCancelID,
[Out]
out IntPtr ppErrors);
void WriteVQT(
[MarshalAs(UnmanagedType.I4)]
int dwCount,
[MarshalAs(UnmanagedType.LPArray, ArraySubType=UnmanagedType.I4, SizeParamIndex=0)]
int[] phServer,
[MarshalAs(UnmanagedType.LPArray, ArraySubType=UnmanagedType.LPStruct, SizeParamIndex=0)]
OPCITEMVQT[] pItemVQT,
[MarshalAs(UnmanagedType.I4)]
int dwTransactionID,
[Out]
[MarshalAs(UnmanagedType.I4)]
out int pdwCancelID,
[Out]
out IntPtr ppErrors);
void RefreshMaxAge(
[MarshalAs(UnmanagedType.I4)]
int dwMaxAge,
[MarshalAs(UnmanagedType.I4)]
int dwTransactionID,
[Out]
[MarshalAs(UnmanagedType.I4)]
out int pdwCancelID);
}
[ComImport]
[GuidAttribute("8E368666-D72E-4f78-87ED-647611C61C9F")]
[InterfaceTypeAttribute(ComInterfaceType.InterfaceIsIUnknown)]
public interface IOPCGroupStateMgt2 // : IOPCGroupStateMgt
{
void GetState(
[Out][MarshalAs(UnmanagedType.I4)]
out int pUpdateRate,
[Out][MarshalAs(UnmanagedType.I4)]
out int pActive,
[Out][MarshalAs(UnmanagedType.LPWStr)]
out string ppName,
[Out][MarshalAs(UnmanagedType.I4)]
out int pTimeBias,
[Out][MarshalAs(UnmanagedType.R4)]
out float pPercentDeadband,
[Out][MarshalAs(UnmanagedType.I4)]
out int pLCID,
[Out][MarshalAs(UnmanagedType.I4)]
out int phClientGroup,
[Out][MarshalAs(UnmanagedType.I4)]
out int phServerGroup);
void SetState(
IntPtr pRequestedUpdateRate,
[Out][MarshalAs(UnmanagedType.I4)]
out int pRevisedUpdateRate,
IntPtr pActive,
IntPtr pTimeBias,
IntPtr pPercentDeadband,
IntPtr pLCID,
IntPtr phClientGroup);
void SetName(
[MarshalAs(UnmanagedType.LPWStr)]
string szName);
void CloneGroup(
[MarshalAs(UnmanagedType.LPWStr)]
string szName,
ref Guid riid,
[Out][MarshalAs(UnmanagedType.IUnknown, IidParameterIndex=1)]
out object ppUnk);
void SetKeepAlive(
[MarshalAs(UnmanagedType.I4)]
int dwKeepAliveTime,
[Out][MarshalAs(UnmanagedType.I4)]
out int pdwRevisedKeepAliveTime);
void GetKeepAlive(
[Out][MarshalAs(UnmanagedType.I4)]
out int pdwKeepAliveTime);
}
public static class Constants
{
// category description strings.
public const string OPC_CATEGORY_DESCRIPTION_DA10 = "OPC Data Access Servers Version 1.0";
public const string OPC_CATEGORY_DESCRIPTION_DA20 = "OPC Data Access Servers Version 2.0";
public const string OPC_CATEGORY_DESCRIPTION_DA30 = "OPC Data Access Servers Version 3.0";
public const string OPC_CATEGORY_DESCRIPTION_XMLDA10 = "OPC XML Data Access Servers Version 1.0";
// values for access rights mask.
public const int OPC_READABLE = 0x01;
public const int OPC_WRITEABLE = 0x02;
// values for browse element flags.
public const int OPC_BROWSE_HASCHILDREN = 0x01;
public const int OPC_BROWSE_ISITEM = 0x02;
// well known complex type description systems.
public const string OPC_TYPE_SYSTEM_OPCBINARY = "OPCBinary";
public const string OPC_TYPE_SYSTEM_XMLSCHEMA = "XMLSchema";
// complex data consitency window values.
public const string OPC_CONSISTENCY_WINDOW_UNKNOWN = "Unknown";
public const string OPC_CONSISTENCY_WINDOW_NOT_CONSISTENT = "Not Consistent";
// complex data write behavoir values.
public const string OPC_WRITE_BEHAVIOR_BEST_EFFORT = "Best Effort";
public const string OPC_WRITE_BEHAVIOR_ALL_OR_NOTHING = "All or Nothing";
}
public static class Qualities
{
// Values for fields in the quality word
public const short OPC_QUALITY_MASK = 0xC0;
public const short OPC_STATUS_MASK = 0xFC;
public const short OPC_LIMIT_MASK = 0x03;
// Values for QUALITY_MASK bit field
public const short OPC_QUALITY_BAD = 0x00;
public const short OPC_QUALITY_UNCERTAIN = 0x40;
public const short OPC_QUALITY_GOOD = 0xC0;
// STATUS_MASK Values for Quality = BAD
public const short OPC_QUALITY_CONFIG_ERROR = 0x04;
public const short OPC_QUALITY_NOT_CONNECTED = 0x08;
public const short OPC_QUALITY_DEVICE_FAILURE = 0x0c;
public const short OPC_QUALITY_SENSOR_FAILURE = 0x10;
public const short OPC_QUALITY_LAST_KNOWN = 0x14;
public const short OPC_QUALITY_COMM_FAILURE = 0x18;
public const short OPC_QUALITY_OUT_OF_SERVICE = 0x1C;
public const short OPC_QUALITY_WAITING_FOR_INITIAL_DATA = 0x20;
// STATUS_MASK Values for Quality = UNCERTAIN
public const short OPC_QUALITY_LAST_USABLE = 0x44;
public const short OPC_QUALITY_SENSOR_CAL = 0x50;
public const short OPC_QUALITY_EGU_EXCEEDED = 0x54;
public const short OPC_QUALITY_SUB_NORMAL = 0x58;
// STATUS_MASK Values for Quality = GOOD
public const short OPC_QUALITY_LOCAL_OVERRIDE = 0xD8;
// Values for Limit Bitfield
public const short OPC_LIMIT_OK = 0x00;
public const short OPC_LIMIT_LOW = 0x01;
public const short OPC_LIMIT_HIGH = 0x02;
public const short OPC_LIMIT_CONST = 0x03;
}
//==========================================================================
// Properties
public static class Properties
{
// property ids.
public const int OPC_PROPERTY_DATATYPE = 1;
public const int OPC_PROPERTY_VALUE = 2;
public const int OPC_PROPERTY_QUALITY = 3;
public const int OPC_PROPERTY_TIMESTAMP = 4;
public const int OPC_PROPERTY_ACCESS_RIGHTS = 5;
public const int OPC_PROPERTY_SCAN_RATE = 6;
public const int OPC_PROPERTY_EU_TYPE = 7;
public const int OPC_PROPERTY_EU_INFO = 8;
public const int OPC_PROPERTY_EU_UNITS = 100;
public const int OPC_PROPERTY_DESCRIPTION = 101;
public const int OPC_PROPERTY_HIGH_EU = 102;
public const int OPC_PROPERTY_LOW_EU = 103;
public const int OPC_PROPERTY_HIGH_IR = 104;
public const int OPC_PROPERTY_LOW_IR = 105;
public const int OPC_PROPERTY_CLOSE_LABEL = 106;
public const int OPC_PROPERTY_OPEN_LABEL = 107;
public const int OPC_PROPERTY_TIMEZONE = 108;
public const int OPC_PROPERTY_CONDITION_STATUS = 300;
public const int OPC_PROPERTY_ALARM_QUICK_HELP = 301;
public const int OPC_PROPERTY_ALARM_AREA_LIST = 302;
public const int OPC_PROPERTY_PRIMARY_ALARM_AREA = 303;
public const int OPC_PROPERTY_CONDITION_LOGIC = 304;
public const int OPC_PROPERTY_LIMIT_EXCEEDED = 305;
public const int OPC_PROPERTY_DEADBAND = 306;
public const int OPC_PROPERTY_HIHI_LIMIT = 307;
public const int OPC_PROPERTY_HI_LIMIT = 308;
public const int OPC_PROPERTY_LO_LIMIT = 309;
public const int OPC_PROPERTY_LOLO_LIMIT = 310;
public const int OPC_PROPERTY_CHANGE_RATE_LIMIT = 311;
public const int OPC_PROPERTY_DEVIATION_LIMIT = 312;
public const int OPC_PROPERTY_SOUND_FILE = 313;
// complex data properties.
public const int OPC_PROPERTY_TYPE_SYSTEM_ID = 600;
public const int OPC_PROPERTY_DICTIONARY_ID = 601;
public const int OPC_PROPERTY_TYPE_ID = 602;
public const int OPC_PROPERTY_DICTIONARY = 603;
public const int OPC_PROPERTY_TYPE_DESCRIPTION = 604;
public const int OPC_PROPERTY_CONSISTENCY_WINDOW = 605;
public const int OPC_PROPERTY_WRITE_BEHAVIOR = 606;
public const int OPC_PROPERTY_UNCONVERTED_ITEM_ID = 607;
public const int OPC_PROPERTY_UNFILTERED_ITEM_ID = 608;
public const int OPC_PROPERTY_DATA_FILTER_VALUE = 609;
// property descriptions.
public const string OPC_PROPERTY_DESC_DATATYPE = "Item Canonical Data Type";
public const string OPC_PROPERTY_DESC_VALUE = "Item Value";
public const string OPC_PROPERTY_DESC_QUALITY = "Item Quality";
public const string OPC_PROPERTY_DESC_TIMESTAMP = "Item Timestamp";
public const string OPC_PROPERTY_DESC_ACCESS_RIGHTS = "Item Access Rights";
public const string OPC_PROPERTY_DESC_SCAN_RATE = "Server Scan Rate";
public const string OPC_PROPERTY_DESC_EU_TYPE = "Item EU Type";
public const string OPC_PROPERTY_DESC_EU_INFO = "Item EU Info";
public const string OPC_PROPERTY_DESC_EU_UNITS = "EU Units";
public const string OPC_PROPERTY_DESC_DESCRIPTION = "Item Description";
public const string OPC_PROPERTY_DESC_HIGH_EU = "High EU";
public const string OPC_PROPERTY_DESC_LOW_EU = "Low EU";
public const string OPC_PROPERTY_DESC_HIGH_IR = "High Instrument Range";
public const string OPC_PROPERTY_DESC_LOW_IR = "Low Instrument Range";
public const string OPC_PROPERTY_DESC_CLOSE_LABEL = "Contact Close Label";
public const string OPC_PROPERTY_DESC_OPEN_LABEL = "Contact Open Label";
public const string OPC_PROPERTY_DESC_TIMEZONE = "Item Timezone";
public const string OPC_PROPERTY_DESC_CONDITION_STATUS = "Condition Status";
public const string OPC_PROPERTY_DESC_ALARM_QUICK_HELP = "Alarm Quick Help";
public const string OPC_PROPERTY_DESC_ALARM_AREA_LIST = "Alarm Area List";
public const string OPC_PROPERTY_DESC_PRIMARY_ALARM_AREA = "Primary Alarm Area";
public const string OPC_PROPERTY_DESC_CONDITION_LOGIC = "Condition Logic";
public const string OPC_PROPERTY_DESC_LIMIT_EXCEEDED = "Limit Exceeded";
public const string OPC_PROPERTY_DESC_DEADBAND = "Deadband";
public const string OPC_PROPERTY_DESC_HIHI_LIMIT = "HiHi Limit";
public const string OPC_PROPERTY_DESC_HI_LIMIT = "Hi Limit";
public const string OPC_PROPERTY_DESC_LO_LIMIT = "Lo Limit";
public const string OPC_PROPERTY_DESC_LOLO_LIMIT = "LoLo Limit";
public const string OPC_PROPERTY_DESC_CHANGE_RATE_LIMIT = "Rate of Change Limit";
public const string OPC_PROPERTY_DESC_DEVIATION_LIMIT = "Deviation Limit";
public const string OPC_PROPERTY_DESC_SOUND_FILE = "Sound File";
// complex data properties.
public const string OPC_PROPERTY_DESC_TYPE_SYSTEM_ID = "Type System ID";
public const string OPC_PROPERTY_DESC_DICTIONARY_ID = "Dictionary ID";
public const string OPC_PROPERTY_DESC_TYPE_ID = "Type ID";
public const string OPC_PROPERTY_DESC_DICTIONARY = "Dictionary";
public const string OPC_PROPERTY_DESC_TYPE_DESCRIPTION = "Type Description";
public const string OPC_PROPERTY_DESC_CONSISTENCY_WINDOW = "Consistency Window";
public const string OPC_PROPERTY_DESC_WRITE_BEHAVIOR = "Write Behavior";
public const string OPC_PROPERTY_DESC_UNCONVERTED_ITEM_ID = "Unconverted Item ID";
public const string OPC_PROPERTY_DESC_UNFILTERED_ITEM_ID = "Unfiltered Item ID";
public const string OPC_PROPERTY_DESC_DATA_FILTER_VALUE = "Data Filter Value";
}
}
三、资料来源
「PascalMing」的博客
https://blog.csdn.net/yuming/article/details/129603210
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