Serial Port

[JoseFco]

Hola Egostar.
Este codigo copila bien, no me da error alguno pero no corre del todo bien, me manda los hex 02 00 pero el micro no manda los 8 hex.

Código Delphi [-]
unit Unit1;
interface
uses
  Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
  Dialogs, CPort, StdCtrls;
type
  TForm1 = class(TForm)
    Button1: TButton;
    ComPort1: TComPort;
    procedure Button1Click(Sender: TObject);
    procedure ComPortRxChar(Sender: TObject; Count: Integer);
  private
    { Private declarations }
  public
    { Public declarations }
  end;
var
  Form1: TForm1;
implementation
{$R *.dfm}
procedure AddHexString(S : String; Lines : TStrings );
var AddS, HexS, CopyS : String;
    i : Integer;
const SLen = 8;
begin
  while Length(S) > 0 do
    begin
      AddS := Copy(S,1,SLen);
      HexS := '';
      Delete(S,1,SLen);
      for i := 1 to SLen do
        begin
          CopyS := Copy(AddS,i,1);
          if CopyS <> '' then
            HexS := HexS + ' ' + Format('%2.2x',[Byte(CopyS[1])]) //
          else
            HexS := HexS + '   ';
        end;
       while Length(AddS) < SLen do
         AddS := AddS + ' ';
       for i := 1 to SLen do
         case AddS[i] of
           #0..#31 : AddS[i] := '.';
           #127    : AddS[i] := '.';
         end;
       Lines.Add(HexS+' : '+AddS);
    end;
end;
procedure TForm1.Button1Click(Sender: TObject);
begin
 Comport1.Connected:=true;
  Comport1.WriteStr(#2#0);
end;
 procedure TForm1.ComPortRxChar(Sender: TObject; Count: Integer);
var
  Str: String;
begin
 ComPort1.ReadStr(Str, Count);
   If Str= 'Hi-LOGIC' then
   ShowMessage('Ya estamos conectados')
else ShowMessage('Ya nos la pellizcamos');
end;
end.

Un Saludo.