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1銆丆ODESYS 3.5.13.0锛堟柊寤篊odesys_ShareMemory椤圭洰锛�

2銆丼haredMemoryCommunication.package锛圕odesysy鍏变韩鍐呭瓨搴擄級

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SharedMemoryCommunication.package (23.03 MB, 涓嬭浇娆℃暟: 60)

2020-6-17 12:45 涓婁紶

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路 SysShm,3.5.8.0 (System)

路 SysTypes2 Interfaces,3.5.4.0 (System)

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3銆佸垱寤篠hareMemory

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• 
  
  
  [C] 绾�鏂囨湰鏌ョ湅 澶嶅埗浠ｇ爜

  PROGRAM ShareMemory
  VAR
          
          bStart: BOOL:= FALSE;
          ReadHandle: RTS_IEC_HANDLE:= RTS_INVALID_HANDLE;
          WriteHandle: RTS_IEC_HANDLE:= RTS_INVALID_HANDLE;
          szNameRead: STRING:= 'CODESYS_MEMORY_READ';                //澹版槑鍏变韩鍐呭瓨鐨勮�诲彇鍐呭瓨鍚嶇О
          szNameWrite: STRING:= 'CODESYS_MEMORY_WRITE';        //澹版槑鍏变韩鍐呭瓨鐨勫啓鍏ュ唴瀛樺悕绉�
          ulPhysicalAddressRead: __UXINT:= 0;
          ulPhysicalAddressWrite: __UXINT:= 0;
          ulSizeRead: __UXINT:= 1024;
          ulSizeWrite: __UXINT:= 1024;
          ResultRead: ARRAY[0..2] OF RTS_IEC_RESULT;                //杩斿洖杩愯�岄敊璇�鐮�
          ResultWrite: ARRAY[0..2] OF RTS_IEC_RESULT;
          
          SMRead: __UXINT;
          SMWrite: __UXINT;
          ulOffsetRead: __UXINT:= 0;
          ulOffsetWrite: __UXINT:= 0;
          
  END_VAR

  
  
  
  

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  [C] 绾�鏂囨湰鏌ョ湅 澶嶅埗浠ｇ爜

  //Init Memory
  IF NOT bStart THEN
          ReadHandle:= SysSharedMemoryCreate(pszName:= szNameRead, ulPhysicalAddress:= ulPhysicalAddressRead, pulSize:= ADR(ulSizeRead), pResult:= ADR(ResultRead[0]));
          WriteHandle:= SysSharedMemoryCreate(pszName:= szNameWrite, ulPhysicalAddress:= ulPhysicalAddressWrite, pulSize:= ADR(ulSizeWrite), pResult:= ADR(ResultWrite[0]));
          IF RTS_INVALID_HANDLE <> ReadHandle AND RTS_INVALID_HANDLE <> WriteHandle THEN
                  bStart:= TRUE;
          END_IF
  END_IF
   
  //璇诲彇鏁版嵁
  IF RTS_INVALID_HANDLE <> ReadHandle THEN
          SMRead:= SysSharedMemoryRead(
          hShm:= ReadHandle,                                         //璇诲彇鍐呭瓨鐨勮�惧�囧彞鏌�
          ulOffset:= ulOffsetRead,                        //璇诲彇鏁版嵁鐨勫亸绉诲湴鍧� 
          pbyData:= ADR(GVL.GetPara),                 //鎸囧悜璇诲彇鏁版嵁鐨勭紦鍐插尯
          ulSize:= SIZEOF(Str_ParaFromHMI),         //璇诲彇鏁版嵁鐨勫瓧鑺傚ぇ灏�        
          pResult:= ADR(ResultRead[1]));                //杩斿洖鎵ц�岀殑閿欒��鐮�
  END_IF
   
  //鍐欏叆鏁版嵁
  IF RTS_INVALID_HANDLE <> WriteHandle THEN
          SMWrite:= SysSharedMemoryWrite(
          hShm:= WriteHandle,                                 //鍐欏叆鍐呭瓨鐨勮�惧�囧彞鏌�
          ulOffset:= ulOffsetWrite,                         //鍐欏叆鏁版嵁鐨勫亸绉诲湴鍧�
          pbyData:= ADR(GVL.SetPara),                 //鎸囧悜鍐欏叆鏁版嵁鐨勭紦鍐插尯
          ulSize:= SIZEOF(Str_ParaToHMI),         //鍐欏叆鏁版嵁鐨勫瓧鑺傚ぇ灏�
          pResult:= ADR(ResultWrite[2]));                //杩斿洖鎵ц�岀殑閿欒��鐮�
  END_IF

  
  
  
  

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• [C] 绾�鏂囨湰鏌ョ湅 澶嶅埗浠ｇ爜

  using System.IO.MemoryMappedFiles;      //寮曠敤鍏变韩鍐呭瓨鍛藉悕绌洪棿
  using System.Threading;                 
  using System.Runtime.InteropServices;

  
  
  
  

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• 
  
  [C] 绾�鏂囨湰鏌ョ湅 澶嶅埗浠ｇ爜

      struct StrFromCodesys
      {
          internal bool bOut;
          internal int iOut;
          internal double fOut;
      }
      struct StrToCodesys
      {
          internal bool bIn;
          internal int iIn;
          internal double fIn;
      }
  

  
  
  
  

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• [C] 绾�鏂囨湰鏌ョ湅 澶嶅埗浠ｇ爜

   private void InitMemory()
          {
              try
              {
                  MMF_Write = MemoryMappedFile.CreateOrOpen("CODESYS_MEMORY_READ", 1024);        //鎵撳紑Codesys_Read鍐呭瓨鍖哄煙锛屾剰鎬濆氨鏄�璇碈odesys鐨勮�诲彇鍖哄煙鏄疌#鐨勫啓鍏ュ尯鍩�
                  AccessorWrite = MMF_Write.CreateViewAccessor(0, Marshal.SizeOf(typeof(StrToCodesys)), MemoryMappedFileAccess.Write);
   
                  MMF_Read = MemoryMappedFile.CreateOrOpen("CODESYS_MEMORY_WRITE", 1024);        //鎵撳紑Codesys_Write鍐呭瓨鍖哄煙锛屾剰鎬濆氨鏄�璇碈odesys鐨勫啓鍏ュ尯鍩熸槸C#鐨勮�诲彇鍖哄煙
                  AccessorRead = MMF_Read.CreateViewAccessor(0, Marshal.SizeOf(typeof(StrFromCodesys)), MemoryMappedFileAccess.Read);
   
              }
              catch(Exception ex)
              {
                  MessageBox.Show(ex.Message);
              }
          }

  
  
  
  

3锛夎�诲彇鏁版嵁

• [C] 绾�鏂囨湰鏌ョ湅 澶嶅埗浠ｇ爜

          private void ReadData()
          {
              while(true)
              {
                  try
                  {
                      Thread.Sleep(5);
                      AccessorRead.Read(0, out ParaFromCodesys);      //璇诲彇Codesys鐨勬暟鎹�
                      Thread.Sleep(5);
                      if(ParaFromCodesys.bOut == true)
                          picbox_bRead.BackColor = Color.Red;
                      else
                          picbox_bRead.BackColor = Color.Gray;
   
                      textbox_iRead.Text = ParaFromCodesys.iOut.ToString("0");
                      textbox_fRead.Text = ParaFromCodesys.fOut.ToString("0.000");
   
                  }
                  catch(Exception ex)
                  {
                      MessageBox.Show(ex.Message);
                  }
              }
          }

  
  
  
  

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• 
  
  
  
  [C] 绾�鏂囨湰鏌ョ湅 澶嶅埗浠ｇ爜

          private void btnWriteB(object sender, EventArgs e)
          {
              ParaToCodesys.bIn = !ParaToCodesys.bIn;
              AccessorWrite.Write(0, ref ParaToCodesys);
              if(ParaToCodesys.bIn == true)
              {
                  picbox_bWrite.BackColor = Color.Red;
              }
              else
              {
                  picbox_bWrite.BackColor = Color.Gray;
              }
          }
  

  
  
  
  

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