private void btnRead_Click(object sender, EventArgs e)
{
btnRead.Enabled = false;
utxtReadData.Value = "";
Application.DoEvents();
byte state = Convert.ToByte(ltxtReadAddress.Text);
byte len = Convert.ToByte(ltxtReadLength.Text);
PassiveCommand.Read6B(SystemPub.ADRcp, state, len);
//if (!SystemPub.ADRcp.SendBytePkt(PassiveRcp.Read6B(SystemPub.ADRcp.Address, state, len))) { }
btnRead.Enabled = true;
}