public static void ModBus_CreatStruct(ref MB ModBus, byte[] Buf)
{
int i = 0;
ModBus.ErrorFlag = 0;
ModBus.Start = Buf[i++];
ModBus.TargetAddr = Buf[i++];
ModBus.HostAddr = Buf[i++];
ModBus.MsgFlag = Buf[i++];
ModBus.MsgNum = Buf[i++];
ModBus.MsgLength = Buf[i++];
ModBus.MsgLength <<= 8;
ModBus.MsgLength |= Buf[i++];
if (ModBus.MsgLength > 0)
{
ModBus.DataFlag = Buf[i++];
ModBus.DataLength = Buf[i++];
ModBus.DataLength <<= 8;
ModBus.DataLength |= Buf[i++];
ModBus.Data = new byte[ModBus.DataLength];
try
{
for (int n = 0; n < ModBus.DataLength; n++)
{
ModBus.Data[n] = Buf[i++];
}
}
catch { }
}
ModBus.XorValue = Buf[i++];
ModBus.End = Buf[i++];
}
public static void ModBus_Create(ref MB ModBus, byte HostAddr, byte Target, byte StartFlag, byte EndFlag)
{
ModBus.HostAddr = HostAddr;
ModBus.TargetAddr = TargetAddr;
ModBus.Start = StartFlag;
ModBus.End = EndFlag;
}
public static int ModBus_CreatBuf(ref MB ModBus, ref byte[] Buf)
{
int i = 0;
if (ModBus.DataLength > 0)
{
ModBus.MsgLength = ModBus.DataLength + 3;
}
else
{
ModBus.MsgLength = 0;
}
Buf[i++] = ModBus.Start;
Buf[i++] = ModBus.TargetAddr;
Buf[i++] = ModBus.HostAddr;
Buf[i++] = ModBus.MsgFlag;
Buf[i++] = ModBus.MsgNum;
Buf[i++] = (byte)(ModBus.MsgLength >> 8);
Buf[i++] = (byte)(ModBus.MsgLength & 0xff);
if (ModBus.MsgLength > 0)
{
Buf[i++] = (byte)(ModBus.DataFlag);
Buf[i++] = (byte)(ModBus.DataLength >> 8);
Buf[i++] = (byte)(ModBus.DataLength & 0xff);
for (int n = 0; n < ModBus.DataLength; n++)
{
Buf[i++] = ModBus.Data[n];
}
}
ModBus.XorValue = Tools.Xor(Buf, i);
Buf[i++] = ModBus.XorValue;
Buf[i++] = EndFlag;
return(i);
}
public static bool CheakXor(MB ModBuf)
{
byte[] Buf = new byte[100];
ModBus_CreatBuf(ref ModBuf, ref Buf);
byte XorValue = Tools.Xor(Buf, ModBuf.MsgLength + 7);
if (XorValue == ModBuf.XorValue)
{
return(true);
}
else
{
return(false);
}
}