public Status CheckRequest(byte[] Request)
{
if (Request.Length < 13)
{
return(Status.Error);
}
Header = new MBAP(Request);
if (Header.ProtocolID != 0)
{
return(Status.Error);
}
switch (Request[1])
{
case 0x01: PDU = new ReadCoilsPDU(); break;
case 0x02: PDU = new ReadDiscreteInputsPDU(); break;
case 0x03: PDU = new ReadHoldingRegistersPDU(); break;
case 0x04: PDU = new ReadInputRegistersPDU(); break;
case 0x05: PDU = new WriteSingleCoilPDU(); break;
case 0x06: PDU = new WriteSingleRegisterPDU(); break;
case 0x0F: PDU = new WriteMultipleCoilsPDU(); break;
case 0x10: PDU = new WriteMultipleRegistersPDU(); break;
default: return(Status.Error);
}
var PDURequest = new byte[Request.Length - 3];
for (int i = 0; i < PDURequest.Length; i++)
{
PDURequest[i] = Request[i + 1];
}
return(PDU.CheckRequest(PDURequest));
}
public byte[] BuildRequest()
{
var Request = new byte[ReqSize];
Header = new MBAP(Device.Address, PDU.ReqSize);
Request[0] = (byte)((Header.TransactionID >> 8) & 0xFF);
Request[1] = (byte)( Header.TransactionID & 0xFF);
Request[2] = (byte)((Header.ProtocolID >> 8) & 0xFF);
Request[3] = (byte)( Header.ProtocolID & 0xFF);
Request[4] = (byte)((Header.Lenght >> 8) & 0xFF);
Request[5] = (byte)( Header.Lenght & 0xFF);
Request[6] = (byte)( Header.UnitID );
var PDUReq = PDU.BuildRequest();
PDUReq.CopyTo(Request, 7);
return Request;
}
public byte[] BuildRequest()
{
var Request = new byte[ReqSize];
Header = new MBAP(Device.Address, PDU.ReqSize);
Request[0] = (byte)((Header.TransactionID >> 8) & 0xFF);
Request[1] = (byte)(Header.TransactionID & 0xFF);
Request[2] = (byte)((Header.ProtocolID >> 8) & 0xFF);
Request[3] = (byte)(Header.ProtocolID & 0xFF);
Request[4] = (byte)((Header.Lenght >> 8) & 0xFF);
Request[5] = (byte)(Header.Lenght & 0xFF);
Request[6] = (byte)(Header.UnitID);
var PDUReq = PDU.BuildRequest();
PDUReq.CopyTo(Request, 7);
return(Request);
}
public Status CheckRequest(byte[] Request)
{
if (Request.Length < 13)
return Status.Error;
Header = new MBAP(Request);
if (Header.ProtocolID != 0)
return Status.Error;
switch (Request[1])
{
case 0x01: PDU = new ReadCoilsPDU(); break;
case 0x02: PDU = new ReadDiscreteInputsPDU(); break;
case 0x03: PDU = new ReadHoldingRegistersPDU(); break;
case 0x04: PDU = new ReadInputRegistersPDU(); break;
case 0x05: PDU = new WriteSingleCoilPDU(); break;
case 0x06: PDU = new WriteSingleRegisterPDU(); break;
case 0x0F: PDU = new WriteMultipleCoilsPDU(); break;
case 0x10: PDU = new WriteMultipleRegistersPDU(); break;
default: return Status.Error;
}
var PDURequest = new byte[Request.Length - 3];
for (int i=0; i<PDURequest.Length; i++)
PDURequest[i] = Request[i + 1];
return PDU.CheckRequest(PDURequest);
}
