Moka7 - Java -单位读写

Question

请问，你能发布一个在DB上设置/写入单个位的示例吗？

使用此命令，我将写入整个DB字节(我想)

ClientPlc.ReadArea(S7.S7AreaDB, 200, 0, 1, Buffer);

非常感谢

Answer 1

 byte[] data = new byte[2];
 res = client.ReadArea(S7.S7AreaDB, 59001, 0, 2, data); //I want to read DB7.DBD0 (it is a real)

 if (res == 0) {

    retEmerg01 = S7.GetBitAt(data, 0, 0);
    retEmerg02 = S7.GetBitAt(data, 0, 1);
    retEmerg03 = S7.GetBitAt(data, 0, 2);
    retEmerg04 = S7.GetBitAt(data, 0, 3);
    retEmerg05 = S7.GetBitAt(data, 0, 4);
    retEmerg06 = S7.GetBitAt(data, 0, 5);
    retEmerg07 = S7.GetBitAt(data, 0, 6);
    retEmerg08 = S7.GetBitAt(data, 0, 7);
    retEmerg09 = S7.GetBitAt(data, 1, 0);
    retEmerg10 = S7.GetBitAt(data, 1, 1);
    retEmerg11 = S7.GetBitAt(data, 1, 2);
    retEmerg12 = S7.GetBitAt(data, 1, 3);
    retEmerg13 = S7.GetBitAt(data, 1, 4);

    }

您可以这样做。

Answer 2

对我来说，它是这样工作的：

void WriteBit(int miDB, int miOffset, int miBit, boolean miVal){
    if (Connected){
      try{
          byte[] dataWrite = new byte[1];
          Client.ReadArea(S7.S7AreaDB, miDB, miOffset, 1, dataWrite); 
          //Keeping adjacent values
          S7.SetBitAt(dataWrite, 0, miBit, miVal);
          Client.WriteArea(S7.S7AreaDB, miDB, miOffset, 1,dataWrite);
      }catch(Exception e){println(e);}    
    }
  }

  boolean ReadBit(int miDB, int miOffset, int miBit){
    boolean miVal = false; 
    if (Connected){
        byte[] dataRead = new byte[1];  
        Client.ReadArea(S7.S7AreaDB, miDB, miOffset, 1, dataRead);
        miVal =S7.GetBitAt(dataRead, 0, miBit);            
        return miVal;
    }
    else return false;
  }