Viewstring:string;
i:integer;
rbuf,sbuf:array[1..6] of byte;
打开串口
procedure TFCOMM.FormShow(Sender: TObject);
begin
comm1.StartComm;
end;
关闭串口
procedure TFCOMM.FormClose(Sender: TObject; var Action: TCloseAction);
begin
comm1.StopComm;
end;
发送数据
自定义的发送过程
procedure senddata;
var
i:integer;
commflg:boolean;
begin
viewstring:="";
commflg:=true;
for i:=1 to 6 do
begin
if not fcomm.comm1.writecommdata(@sbuf[i],1) then
begin
commflg:=false;
break;
end;
sleep(2); {发送时字节间的延时}
viewstring:=viewstring+inttohex(sbuf[i],2)+" ";
end;
viewstring:="发送"+viewstring;
fcomm.memo1.lines.add(viewstring);
fcomm.memo1.lines.add("");
if not commflg then messagedlg("发送失败!",mterror,[mbyes],0);
end;
procedure TFCOMM.Btn_sendClick(Sender: TObject);{发送按钮的点击事件}
begin
sbuf[1]:=byte($f0); {帧头}
sbuf[2]:=byte($01); {命令号}
sbuf[3]:=byte($ff);
sbuf[4]:=byte($ff);
sbuf[5]:=byte($01);