/// <summary>
///
/// </summary>
/// <param name="DBNumber">DB Number</param>
/// <param name="Buffer">Destination buffer</param>
/// <param name="SizeRead">How many bytes were read</param>
/// <returns></returns>
public int DBGet(int DBNumber, byte[] Buffer, IntByRef SizeRead)
{
S7BlockInfo Block = new S7BlockInfo();
// Query the DB Length
LastError = GetAgBlockInfo(S7.Block_DB, DBNumber, Block);
if (LastError == 0)
{
int SizeToRead = Block.MC7Size();
// Checks the room
if (SizeToRead <= Buffer.Length)
{
LastError = ReadArea(S7.S7AreaDB, DBNumber, 0, SizeToRead, Buffer);
if (LastError == 0)
{
SizeRead.Value = SizeToRead;
}
}
else
{
LastError = errS7BufferTooSmall;
}
}
return(LastError);
}
public int GetPlcStatus(IntByRef Status)
{
int Length;
LastError = 0;
SendPacket(S7_GET_STAT);
if (LastError == 0)
{
Length = RecvIsoPacket();
if (Length > 30) // the minimum expected
{
if (S7.GetWordAt(PDU, 27) == 0)
{
switch (PDU[44])
{
case S7.S7CpuStatusUnknown:
case S7.S7CpuStatusRun:
case S7.S7CpuStatusStop:
Status.Value = PDU[44];
break;
default:
// Since RUN status is always 0x08 for all CPUs and CPs, STOP status
// sometime can be coded as 0x03 (especially for old cpu...)
Status.Value = S7.S7CpuStatusStop;
break;
}
}
else
{
LastError = errS7FunctionError;
}
}
else
{
LastError = errS7InvalidPDU;
}
}
return(LastError);
}
