S7-200-OPC-C++读写PC-Access服务器.docx

S7-200 OPC C+读写PC Access服务器 操作系统：Windows 7旗舰版开发工具：VS2010开发语言：MFC描述：对S7-200的VD100-VD220的31个双字寄存器进行写；头文件：OPCComm.h#pragma once#include StdAfx.hconst LPWSTR g_szItemID31 = L2, VD100, real, L2, VD104, real, L2, VD108, real, L2, VD112, real, L2, VD116, real,L2, VD120, real, L2, VD124, real, L2, VD128, real, L2, VD132, real, L2, VD136, real,L2, VD140, real, L2, VD144, real, L2, VD148, real, L2, VD152, real, L2, VD156, real,L2, VD160, real, L2, VD164, real, L2, VD168, real, L2, VD172, real, L2, VD176, real,/VD164L2, VD180, real, L2, VD184, real, L2, VD188, real, L2, VD192, real, L2, VD196, real,L2, VD200, real, L2, VD204, real, L2, VD208, real, L2, VD212, real, L2, VD216, real,L2, VD220, real;class COPCCommpublic:COPCComm(void);COPCComm(void);public:DWORDm_dwAdvise;OPCITEMDEFm_Items31;VARIANT m_ItemValues31; LPWSTR m_ItemID31;OPCITEMATTRIBUTES *m_pItAttr;IUnknown* m_pUnknown;IOPCServer* m_IOPCServer;IOPCItemMgt* m_IOPCItemMgt;IOPCSyncIO* m_pOPCSync;IOPCGroupStateMgt* m_IOPCGroupStateMgt;IOPCAsyncIO2* m_IOPCAsyncIO2;OPCITEMRESULT* m_ItemResult;HRESULT* m_pErrors;OPCHANDLE m_GrpSrvHandle;MULTI_QI m_arrMultiQI6;DWORD m_TransactionID;OPCITEMDEF* m_pItems;OPCITEMSTATE* bdg;public:bool ConnectSrv(void);bool Disconnect(void);bool AddGroup(void);bool AddItem(DWORD NumItems);bool Write(DWORD NumItems);bool RemoveGroup(void);bool RemovItem(DWORD NumItems);float Read(DWORD NumItems);源文件：OPCComm.cpp#include StdAfx.h#include OPCComm.hCOPCComm:COPCComm(void)int i;m_pItAttr = new OPCITEMATTRIBUTES31;for(i = 0; i RemoveGroup(m_GrpSrvHandle,true);m_IOPCItemMgt-Release();m_IOPCServer-Release();return false;bool COPCComm:AddGroup()/ TODO: Add your control notification handler code hereLONG TimBias;FLOAT PercDeadband;DWORD dwLCID;DWORD RevUpRate; /outHRESULT r1;TimBias = 0;PercDeadband = 0.0;dwLCID = 0x409;r1 = m_IOPCServer-AddGroup(Lgru1, TRUE, 500, 1, &TimBias, &PercDeadband, dwLCID, &m_GrpSrvHandle, &RevUpRate, IID_IOPCItemMgt, (LPUNKNOWN*)&m_IOPCItemMgt);if(!FAILED(r1) /AfxMessageBox(_T(Successfully added group to server!); return false;elseAfxMessageBox(_T(Cant add group to server!); m_IOPCItemMgt = NULL;return true;return false;bool COPCComm:AddItem(DWORD NumItems)/ TODO: Add your control notification handler code hereOPCITEMDEF* pItems;OPCITEMRESULT* pItResult;HRESULT* pErrors; HRESULT r1;DWORD i;/DWORD NumItems;/NumItems = 31;pItems = new OPCITEMDEFNumItems;for(i = 0; i AddItems(NumItems, pItems, &pItResult, &pErrors); if(FAILED(r1) &(r1 != S_FALSE) AfxMessageBox(_T(AddItems- failed!);if(m_IOPCServer != NULL)m_IOPCServer-Release();delete pItems;return true; /exit(1);for (i = 0; i QueryInterface(IID_IOPCAsyncIO2, (void*)&m_IOPCAsyncIO2); if (r1 Release(); m_IOPCItemMgt = NULL; m_GrpSrvHandle = NULL; m_IOPCServer-Release(); m_IOPCServer = NULL; CoUninitialize(); return; */delete pItems;return false;bool COPCComm:Write(DWORD NumItems)/ TODO: Add your control notification handler code here/*m_ItemID0 = g_szItemID0;m_ItemValues0.vt = VT_R4; m_ItemValues0.fltVal = 258.5;/要写入的一Item值 m_ItemID1 = g_szItemID1; m_ItemValues1.vt = VT_R4; m_ItemValues1.fltVal = 345.2;/要写入的另一Item值*/IOPCAsyncIO* pAsyncIO;OPCHANDLE* phServer;HRESULT r1, r2;HRESULT* pErrors;BOOL found = FALSE;DWORD i;/NumItems = 31;phServer = new OPCHANDLENumItems;for(i = 0; i QueryInterface(IID_IOPCAsyncIO, (void *)&pAsyncIO);if(FAILED(r1)AfxMessageBox(_T(IOPCAsyncIO - Not supported !);CoTaskMemFree(pErrors);delete phServer;return true;else/using IOPCAsyncIO:Write(.), look at OPC spezifikationr2 = pAsyncIO-Write(0, NumItems, phServer, m_ItemValues, &m_TransactionID, &pErrors);if(FAILED(r2) & (r2 = E_FAIL)AfxMessageBox(_T(Error - Write);delete phServer;return true; /exit(1);pAsyncIO-Release();/CoTaskMemFree(pItemValue);CoTaskMemFree(pErrors);delete phServer;return false;float COPCComm:Read(DWORD NumItems)/ TODO: Add your control notification handler code hereIOPCSyncIO* pSyncIO;OPCHANDLE* phServer;HRESULT r1, r2;HRESULT* pErrors;BOOL found = FALSE;DWORD i;CString temp;/NumItems = 31;phServer = new OPCHANDLENumItems;for(i = 0; i QueryInterface(IID_IOPCSyncIO, (void *)&pSyncIO);if(FAILED(r1)AfxMessageBox(_T(IOPCAsyncIO - Not supported !);delete phServer;return true;else/using IOPCAsyncIO:Read(.), look at OPC spezifikationr2 = pSyncIO-Read(OPC_DS_DEVICE, NumItems, phServer, &bdg, &pErrors);if(FAILED(r2) & (r2 = E_FAIL)AfxMessageBox(_T(Error - Read);VariantClear (&bdg0.vDataValue);CoTaskMemFree(pErrors);delete phServer;return -999.0;/赋不可能值 /exit(1);temp.Format(_T(%.2f), bdg0.vDataValue.fltVal);retData = bdg1.vDataValue.fltVal;VariantClear (&bdg0.vDataValue);pSyncIO-Release();CoTaskMemFree(pErrors);delete phServer;return (float)_ttof(temp);bool COPCComm:RemoveGroup()/ TODO: Add your control notification handler code hereHRESULT r1;r1 = m_IOPCServer-RemoveGroup(m_GrpSrvHandle, TRUE);if(SUCCEEDED(r1)/AfxMessageBox(_T(Successfully removed group !);m_GrpSrvHandle = NULL;m_IOPCItemMgt-Release();m_IOPCItemMgt = NULL;elseAfxMessageBox(_T(Cant remove group ! );return true;return false;bool COPCComm:RemovItem(DWORD NumItems)/ TODO: Add your control notification handler code hereHRESULT r1;HRESULT* pErrors;OPCHANDLE* phServer;DWORD i;phServer = new OPCHANDLENumItems;for(i = 0; i RemoveItems(NumItems, phServer, &pErrors);if(FAILED(r1) & (r1 != S_FALSE) AfxMessageBox(_T(RemoveItems - failed!);delete phServer;return true;/exit(1);delete phServer;return false;主程序调用：if(m_OPC.ConnectSrv()AfxMessageBox(_T(本地服务器没连上！);return;if(m_OPC.AddGroup()AfxMessageBox(_T(添加组失败！);return;if